Implemented basic ECS

(bug fixed in DirectX-beef)

.gitignore

@@ -5,3 +5,4 @@ build/
 recovery/
 vendor/directx
 Sandbox/imgui.ini
+Sandbox/worlds

.gitmodules

@@ -7,3 +7,6 @@
 [submodule ".\\GlitchyEngine\\vendor\\DirectXTK"]
 	path = .\\GlitchyEngine\\vendor\\DirectXTK
 	url = https://github.com/aharabada/DirectXTK-beef.git
+[submodule "vendor/lodepng-beef"]
+	path = vendor/lodepng-beef
+	url = https://github.com/aharabada/lodepng-beef.git

BeefSpace.toml

@@ -1,5 +1,5 @@
 FileVersion = 1
-Projects = {Sandbox = {Path = "Sandbox"}, GlitchyEngine = {Path = "GlitchyEngine"}, GlitchLog = {Path = "GlitchLog"}, DirectX = {Path = "GlitchyEngine/vendor/directx/DirectX"}, ImGui = {Path = "GlitchyEngine/vendor/imgui-beef/ImGui"}, ImGuiImplWin32 = {Path = "GlitchyEngine/vendor/imgui-beef/ImGuiImplWin32"}, ImGuiImplDX11 = {Path = "GlitchyEngine/vendor/imgui-beef/ImGuiImplDX11"}, DirectXTK = {Path = "GlitchyEngine/vendor/DirectXTK/DirectXTK-beef"}}
+Projects = {Sandbox = {Path = "Sandbox"}, GlitchyEngine = {Path = "GlitchyEngine"}, GlitchLog = {Path = "GlitchLog"}, DirectX = {Path = "GlitchyEngine/vendor/directx/DirectX"}, ImGui = {Path = "GlitchyEngine/vendor/imgui-beef/ImGui"}, ImGuiImplWin32 = {Path = "GlitchyEngine/vendor/imgui-beef/ImGuiImplWin32"}, ImGuiImplDX11 = {Path = "GlitchyEngine/vendor/imgui-beef/ImGuiImplDX11"}, DirectXTK = {Path = "GlitchyEngine/vendor/DirectXTK/DirectXTK-beef"}, LodePng = {Path = "vendor/lodepng-beef/lodepng-beef"}}
 
 [Workspace]
 StartupProject = "Sandbox"

GlitchyEngine/BeefProj.toml

@@ -10,7 +10,7 @@ PreprocessorMacros = ["DEBUG", "GE_WINDOWS"]
 
 [Configs.Debug.Win64]
 CLibType = "DynamicDebug"
-PreprocessorMacros = ["DEBUG", "GE_WINDOWS"]
+PreprocessorMacros = ["DEBUG", "GE_WINDOWS", "GE_D3D11"]
 
 [Configs.Release.Win32]
 PreprocessorMacros = ["RELEASE", "GE_WINDOWS"]

GlitchyEngine/src/Input.bf

@@ -6,6 +6,8 @@ namespace GlitchyEngine
 {
 	public static class Input
 	{
+		public static extern bool RawInput {get; set;}
+
 		public static extern bool IsKeyPressed(Key keycode);
 		public static extern bool IsKeyReleased(Key keycode);
 		public static extern bool IsKeyToggled(Key keycode);
@@ -41,6 +43,12 @@ namespace GlitchyEngine
 		public static extern bool IsMouseButtonReleasiong(MouseButton button);
 		public static extern Point GetMouseMovement();
 
+		/**
+		 * Returns the raw mouse (that is the mouse movement taken direcly from the device instead of the movement processed by the OS).
+		 * Requires RawInput to be true. If RawInput is false (or could not be initialized) this method will return the same value as GetMouseMovement();
+		 */
+		public static extern Int32_2 GetRawMouseMovement();
+
 		public static extern void NewFrame();
 	}
 }

GlitchyEngine/src/Math/BitArray.bf

@@ -0,0 +1,149 @@
+using System;
+
+namespace GlitchyEngine.Math
+{
+	public class BitArray
+	{
+		const int BitsPerInt = sizeof(uint) * 8;
+
+		private uint* _bits ~ Free(_);
+		private int _intCount;
+		private int _capacity;
+
+		public int Capacity
+		{
+			get => _capacity;
+			set => EnsureCapacity(value);
+		}
+
+		public this(int initialCapacity = sizeof(uint))
+		{
+			EnsureCapacity(initialCapacity);
+		}
+
+		[Inline]
+		static int IntCount(int bits)
+		{
+			int count = bits / BitsPerInt;
+
+			if(bits % BitsPerInt > 0)
+				count++;
+
+			return count;
+		}
+		
+		[LinkName("free")]
+		static extern void Free(void* memoryBlock);
+
+		[LinkName("realloc")]
+		static extern void* Realloc(void* memoryBlock, int size);
+
+		private void EnsureCapacity(int requestedCapacity)
+		{
+			if(requestedCapacity <= _capacity)
+				return;
+
+			int newIntCount = IntCount(requestedCapacity);
+
+			if(_intCount >= newIntCount)
+				return;
+			
+			int oldIntCount = _intCount;
+			_intCount = newIntCount;
+			_capacity = _intCount * BitsPerInt;
+
+			_bits = (.)Realloc(_bits, _intCount * sizeof(uint));
+
+			// Set new bits to 0
+			for(int i = oldIntCount; i < _intCount; i++)
+			{
+				_bits[i] = 0;
+			}
+		}
+
+		public bool this[int index]
+		{
+			get
+			{
+				Log.EngineLogger.AssertDebug(index >= 0);
+
+				if(index > _capacity)
+					return false;
+
+				int arrayIndex = index / _capacity;
+				int bitIndex = index % _capacity;
+
+				return ((_bits[arrayIndex] >> bitIndex) & 1) == 1;
+			}
+
+			set
+			{
+				Log.EngineLogger.AssertDebug(index >= 0);
+
+				if(index > _capacity)
+					EnsureCapacity(index);
+
+				int arrayIndex = index / _capacity;
+				int bitIndex = index % _capacity;
+
+				if(value)
+				{
+					_bits[arrayIndex] |= (1 << bitIndex);
+				}
+				else
+				{
+					// create a mask that is all 1 except for the bit at the specified index
+					uint mask = uint.MaxValue;
+					mask ^= (1 << bitIndex);
+
+					_bits[arrayIndex] &= mask;
+				}
+			}
+		}
+
+		/**
+		 * Sets all bits to given value.
+		 */
+		public void Clear(bool value = false)
+		{
+			if(value)
+			{
+				for(int i < _intCount)
+				{
+					_bits[i] = (uint)-1;
+				}
+			}
+			else
+			{
+				for(int i < _intCount)
+				{
+					_bits[i] = 0;
+				}
+			}
+		}
+
+		/**
+		 * Returns whether or not this bitarray is 1 for every 1 in mask.
+		 * i.e. mask == (this & mask)
+		*/
+		public bool MaskMatch(BitArray mask)
+		{
+			// The number of ints we can compare binary
+			int intCompares = Math.Min(mask._intCount, _intCount);
+			for(int i < intCompares)
+			{
+				if(mask._bits[i] != (_bits[i] & mask._bits[i]))
+					return false;
+			}
+
+			// if mask has more integers than "this", these integers must be 0
+			for(int i = _intCount; i < mask._intCount; i++)
+			{
+				if(mask._bits[i] > 0)
+					return false;
+			}
+
+			return true;
+		}
+	}
+}

GlitchyEngine/src/Math/FloatExtension.bf

@@ -0,0 +1,24 @@
+using GlitchyEngine.Math;
+
+namespace System
+{
+	extension Float
+	{
+		public float X
+		{
+			[Inline]
+			get => (float)this;
+			[Inline]
+			set mut => this = value;
+		}
+
+		[Inline]
+		public Vector2 XX => Vector2((float)this);
+		
+		[Inline]
+		public Vector3 XXX => Vector3((float)this);
+		
+		[Inline]
+		public Vector4 XXXX => Vector4((float)this);
+	}
+}

GlitchyEngine/src/Math/IntExtension.bf

@@ -0,0 +1,24 @@
+using GlitchyEngine.Math;
+
+namespace System
+{
+	extension Int32
+	{
+		public int32 X
+		{
+			[Inline]
+			get => (int32)this;
+			[Inline]
+			set mut => this = value;
+		}
+
+		[Inline]
+		public Int32_2 XX => Int32_2((int32)this);
+
+		[Inline]
+		public Int32_3 XXX => Int32_3((int32)this);
+
+		[Inline]
+		public Int32_4 XXXX => Int32_4((int32)this);
+	}
+}

GlitchyEngine/src/Math/Ray.bf

@@ -0,0 +1,16 @@
+namespace GlitchyEngine.Math
+{
+	struct Ray
+	{
+		public Vector3 Start;
+		public Vector3 Direction;
+
+		public this() => this = default;
+
+		public this(Vector3 start, Vector3 direction)
+		{
+			Start = start;
+			Direction = direction;
+		}
+	}
+}

GlitchyEngine/src/Math/SwizzleVectorAttribute.bf

@@ -12,9 +12,12 @@ namespace GlitchyEngine.Math
 
 		public int VectorSize => _vectorSize;
 
-		this(int vectorSize)
+		private String _vectorTypeName;
+
+		this(int vectorSize, String vectorTypeName)
 		{
 			_vectorSize = vectorSize;
+			_vectorTypeName = vectorTypeName;
 		}
 
 		/**
@@ -30,8 +33,7 @@ namespace GlitchyEngine.Math
 		[Comptime]
 		public void ApplyToType(Type type)
 		{
-			// TODO: report bug... sized array not working
+			String[4] componentNames = .("X", "Y", "Z", "W");
-			String[] componentNames = scope String[]("X", "Y", "Z", "W");
 
 			for(int swizzleCount = 2; swizzleCount <= 4; swizzleCount++)
 			{
@@ -47,7 +49,7 @@ namespace GlitchyEngine.Math
 				{
 					String swizzleName = scope String(swizzleCount);
 					String swizzleConstructor = scope String(swizzleCount * 3);
-					String setter = scope String(128);
+					String setter = scope String();
 
 					bool setterInvalid = invalidSetter(cmp, swizzleCount);
 
@@ -61,7 +63,7 @@ namespace GlitchyEngine.Math
 						}
 						swizzleConstructor.Append(componentNames[cmp[c]]);
 
-						if(!setterInvalid && c < _vectorSize) //
+						if(!setterInvalid && c < _vectorSize)
 						{
 							setter.AppendF($"\n\t\t{componentNames[cmp[c]]} = value.{componentNames[c]};");
 						}
@@ -70,7 +72,7 @@ namespace GlitchyEngine.Math
 					//{(setterInvalid ? "[Error(\"Cannot assign multiple values to same component.\")]" : String.Empty)}		
 
 					String swizzleString = scope $"""
-						public Vector{swizzleCount} {swizzleName}
+						public {_vectorTypeName}{swizzleCount} {swizzleName}
 						{{
 							get => .({swizzleConstructor});
 							set mut

GlitchyEngine/src/Math/Vector2.bf

@@ -2,7 +2,7 @@ using System;
 
 namespace GlitchyEngine.Math
 {
-	[SwizzleVector(2)]
+	//[SwizzleVector(2, "Vector")]
 	public struct Vector2
 	{
 		public const Vector2 Zero  = .(0f, 0f);
@@ -223,5 +223,8 @@ namespace GlitchyEngine.Math
 
 		[Inline]
 		public static implicit operator Self(in DirectX.Math.Vector2 value) => *(Self*)&value;
+
+		[Inline]
+		public static explicit operator Self(float value) => Self(value);
 	}
 }

GlitchyEngine/src/Math/Vector3.bf

@@ -2,21 +2,21 @@ using System;
 
 namespace GlitchyEngine.Math
 {
-	[SwizzleVector(3)]
+	//[SwizzleVector(3, "Vector")]
 	public struct Vector3
 	{
-		public const Vector3 Zero 	= .(0f, 0f, 0f);
+		public const Vector3 Zero     = .(0f, 0f, 0f);
-		public const Vector3 UnitX 	= .(1f, 0f, 0f);
+		public const Vector3 UnitX    = .(1f, 0f, 0f);
-		public const Vector3 UnitY 	= .(0f, 1f, 0f);
+		public const Vector3 UnitY    = .(0f, 1f, 0f);
-		public const Vector3 UnitZ 	= .(0f, 0f, 1f);
+		public const Vector3 UnitZ    = .(0f, 0f, 1f);
-		public const Vector3 One 		= .(1f, 1f, 1f);
+		public const Vector3 One      = .(1f, 1f, 1f);
 		
-		public const Vector3 Forward 	= .(0f, 0f, 1f);	
+		public const Vector3 Forward  = .(0f, 0f, 1f);	
 		public const Vector3 Backward = .(0f, 0f, -1f);	
-		public const Vector3 Left 	= .(-1f, 0f, 0f); 	
+		public const Vector3 Left     = .(-1f, 0f, 0f); 	
-		public const Vector3 Right 	= .(1f, 0f, 0f);  	
+		public const Vector3 Right    = .(1f, 0f, 0f);  	
-		public const Vector3 Up 		= .(0f, 1f, 0f); 	
+		public const Vector3 Up       = .(0f, 1f, 0f); 	
-		public const Vector3 Down 	= .(0f, -1f, 0f);
+		public const Vector3 Down     = .(0f, -1f, 0f);
 
 		public float X, Y, Z;
 
@@ -77,6 +77,9 @@ namespace GlitchyEngine.Math
 			return X * X + Y * Y + Z * Z;
 		}
 		
+		/**
+		 * Normalizes this vector.
+		 */
 		[Checked]
 		public void Normalize() mut
 		{
@@ -86,11 +89,34 @@ namespace GlitchyEngine.Math
 			this /= Magnitude();
 		}
 
+		/**
+		 * Normalizes this vector.
+		 */
 		public void Normalize() mut
 		{
 			this /= Magnitude();
 		}
 		
+		/**
+		 * Returns a copy of this Vector with a magnitude of 1.
+		 */
+		[Checked]
+		public Vector3 Normalized()
+		{
+			if(this == .Zero)
+				return .Zero;
+
+			return this / Magnitude();
+		}
+
+		/**
+		 * Returns a copy of this Vector with a magnitude of 1.
+		 */
+		public Vector3 Normalized()
+		{
+			return this / Magnitude();
+		}
+
 		public static Vector3 Normalize(Vector3 v)
 		{
 			return v / v.Magnitude();
@@ -125,6 +151,11 @@ namespace GlitchyEngine.Math
 			return (a - b * (Dot(a, b) / Dot(b, b)));
 		}
 
+		public static Vector3 Floor(Vector3 value)
+		{
+			return .(Math.Floor(value.X), Math.Floor(value.Y), Math.Floor(value.Z));
+		}
+
 		//
 		// Assignment operators
 		//
@@ -239,6 +270,14 @@ namespace GlitchyEngine.Math
 
 		public static Vector3 operator /(float scalar, Vector3 value) => Vector3(scalar / value.X, scalar / value.Y, scalar / value.Z);
 		
+		// Modulo
+
+		public static Vector3 operator %(Vector3 left, Vector3 right) => Vector3(left.X % right.X, left.Y % right.Y, left.Z % right.Z);
+
+		public static Vector3 operator %(Vector3 value, float scalar) => Vector3(value.X % scalar, value.Y % scalar, value.Z % scalar);
+
+		public static Vector3 operator %(float scalar, Vector3 value) => Vector3(scalar % value.X, scalar % value.Y, scalar % value.Z);
+
 		// Equality
 
 		public static bool operator ==(Vector3 left, Vector3 right) => left.X == right.X && left.Y == right.Y && left.Z == right.Z;
@@ -254,5 +293,8 @@ namespace GlitchyEngine.Math
 
 		[Inline]
 		public static implicit operator Self(in DirectX.Math.Vector3 value) => *(Self*)&value;
+
+		[Inline]
+		public static explicit operator Self(float value) => Self(value);
 	}
 }

GlitchyEngine/src/Math/Vector4.bf

@@ -2,7 +2,7 @@ using System;
 
 namespace GlitchyEngine.Math
 {
-	[SwizzleVector(4)]
+	//[SwizzleVector(4, "Vector")]
 	public struct Vector4
 	{
 		public const Vector4 Zero 	= .(0f, 0f, 0f, 0f);
@@ -274,5 +274,8 @@ namespace GlitchyEngine.Math
 
 		[Inline]
 		public static implicit operator Self(in DirectX.Math.Vector4 value) => *(Self*)&value;
+		
+		[Inline]
+		public static explicit operator Self(float value) => Self(value);
 	}
 }

GlitchyEngine/src/Math/Vectors/Int32_2.bf

@@ -0,0 +1,162 @@
+#pragma warning disable 4204
+
+using System;
+using System.Diagnostics;
+
+namespace GlitchyEngine.Math
+{
+	/**
+	 * A Vector with two components of type int32.
+	 */
+	[SwizzleVector(2, "Int32_")]
+	public struct Int32_2 : IHashable
+	{
+		public const Int32_2 Zero  = .(0, 0);
+		public const Int32_2 UnitX = .(1, 0);
+		public const Int32_2 UnitY = .(0, 1);
+		public const Int32_2 One   = .(1, 1);
+
+		public int32 X, Y;
+
+		public this() => this = default;
+
+		public this(int32 value)
+		{
+			X = value;
+			Y = value;
+		}
+
+		public this(int value)
+		{
+			X = (.)value;
+			Y = (.)value;
+		}
+
+		public this(int32 x, int32 y)
+		{
+			X = x;
+			Y = y;
+		}
+
+		public this(int x, int y)
+		{
+			X = (.)x;
+			Y = (.)y;
+		}
+
+		public ref int32 this[int index]
+		{
+			[Inline]
+			get
+			{
+#if DEBUG
+				if(index < 0 || index >= 2)
+					Internal.ThrowIndexOutOfRange(1);
+#endif
+
+				return ref (&X)[index];
+			}
+		}
+
+		public int32 MagnitudeSquared() => X * X + Y * Y;
+
+		public float Magnitude() => Math.Sqrt(X * X + Y * Y);
+		
+		public Int32_2 Abs() => .(Math.Abs(X), Math.Abs(Y));
+
+		//
+		// Assignment operators
+		//
+
+		public void operator +=(Int32_2 value) mut
+		{
+			X += value.X;
+			Y += value.Y;
+		}
+
+		public void operator +=(int32 value) mut
+		{
+			X += value;
+			Y += value;
+		}
+		
+		public void operator -=(Int32_2 value) mut
+		{
+			X -= value.X;
+			Y -= value.Y;
+		}
+
+		public void operator -=(int32 value) mut
+		{
+			X -= value;
+			Y -= value;
+		}
+		
+		public void operator *=(Int32_2 value) mut
+		{
+			X *= value.X;
+			Y *= value.Y;
+		}
+
+		public void operator *=(int32 value) mut
+		{
+			X *= value;
+			Y *= value;
+		}
+		
+		public void operator /=(Int32_2 value) mut
+		{
+			X /= value.X;
+			Y /= value.Y;
+		}
+
+		public void operator /=(int32 value) mut
+		{
+			X /= value;
+			Y /= value;
+		}
+
+		// Operators
+
+		public static Int32_2 operator +(Int32_2 value) => value;
+		public static Int32_2 operator +(Int32_2 left, Int32_2 right) => .(left.X + right.X, left.Y + right.Y);
+		public static Int32_2 operator +(Int32_2 left, int32 right) => .(left.X + right, left.Y + right);
+		public static Int32_2 operator +(int32 left, Int32_2 right) => .(left + right.X, left + right.Y);
+
+		public static Int32_2 operator -(Int32_2 value) => .(-value.X, -value.Y);
+		public static Int32_2 operator -(Int32_2 left, Int32_2 right) => .(left.X - right.X, left.Y - right.Y);
+		public static Int32_2 operator -(Int32_2 left, int32 right) => .(left.X - right, left.Y - right);
+		public static Int32_2 operator -(int32 left, Int32_2 right) => .(left - right.X, left - right.Y);
+		
+		public static Int32_2 operator *(Int32_2 left, Int32_2 right) => .(left.X * right.X, left.Y * right.Y);
+		public static Int32_2 operator *(Int32_2 left, int32 right) => .(left.X * right, left.Y * right);
+		public static Int32_2 operator *(int32 left, Int32_2 right) => .(left * right.X, left * right.Y);
+		
+		public static Int32_2 operator /(Int32_2 left, Int32_2 right) => .(left.X / right.X, left.Y / right.Y);
+		public static Int32_2 operator /(Int32_2 left, int32 right) => .(left.X / right, left.Y / right);
+		public static Int32_2 operator /(int32 left, Int32_2 right) => .(left / right.X, left / right.Y);
+		
+		public static Int32_2 operator %(Int32_2 left, Int32_2 right) => .(left.X % right.X, left.Y % right.Y);
+		public static Int32_2 operator %(Int32_2 left, int32 right) => .(left.X % right, left.Y % right);
+		public static Int32_2 operator %(int32 left, Int32_2 right) => .(left % right.X, left % right.Y);
+
+		public static bool operator ==(Int32_2 left, Int32_2 right) => left.X == right.X && left.Y == right.Y;
+		public static bool operator ==(Int32_2 left, int32 right) => left.X == right && left.Y == right;
+		public static bool operator ==(int32 left, Int32_2 right) => left == right.X && left == right.Y;
+
+		public static bool operator !=(Int32_2 left, Int32_2 right) => left.X != right.X || left.Y != right.Y;
+		public static bool operator !=(Int32_2 left, int32 right) => left.X != right || left.Y != right;
+		public static bool operator !=(int32 left, Int32_2 right) => left != right.X || left != right.Y;
+
+		public override void ToString(String strBuffer) => strBuffer.AppendF($"X:{X} Y:{Y}");
+
+		public static explicit operator Vector2(Int32_2 point) => .(point.X, point.Y);
+
+		public static explicit operator Int32_2(Vector2 point) => .((int32)point.X, (int32)point.Y);
+
+		public int GetHashCode()
+		{
+			return (X * 39) ^ Y;
+		}
+	}
+}

GlitchyEngine/src/Math/Vectors/Int32_3.bf

@@ -0,0 +1,206 @@
+#pragma warning disable 4204
+
+using System;
+using System.Diagnostics;
+
+namespace GlitchyEngine.Math
+{
+	/**
+	 * A Vector with three components of type int32.
+	 */
+	[SwizzleVector(3, "Int32_")]
+	public struct Int32_3 : IHashable
+	{
+		public const Int32_3 Zero  = .(0, 0, 0);
+		public const Int32_3 UnitX = .(1, 0, 0);
+		public const Int32_3 UnitY = .(0, 1, 0);
+		public const Int32_3 UnitZ = .(0, 0, 1);
+		public const Int32_3 One   = .(1, 1, 1);
+
+		public int32 X, Y, Z;
+
+		public this() => this = default;
+
+		public this(int32 value)
+		{
+			X = value;
+			Y = value;
+			Z = value;
+		}
+		
+		public this(int value)
+		{
+			X = (.)value;
+			Y = (.)value;
+			Z = (.)value;
+		}
+
+		public this(int32 x, int32 y, int32 z)
+		{
+			X = x;
+			Y = y;
+			Z = z;
+		}
+		
+		public this(Int32_2 xy, int32 z)
+		{
+			X = xy.X;
+			Y = xy.Y;
+			Z = z;
+		}
+		
+		public this(int32 x, Int32_2 yz)
+		{
+			X = x;
+			Y = yz.X;
+			Z = yz.Y;
+		}
+
+		public this(int x, int y, int z)
+		{
+			X = (.)x;
+			Y = (.)y;
+			Z = (.)z;
+		}
+		
+		public this(Int32_2 xy, int z)
+		{
+			X = xy.X;
+			Y = xy.Y;
+			Z = (.)z;
+		}
+		
+		public this(int x, Int32_2 yz)
+		{
+			X = (.)x;
+			Y = yz.X;
+			Z = yz.Y;
+		}
+
+		public ref int32 this[int index]
+		{
+			[Inline]
+			get
+			{
+#if DEBUG
+				if(index < 0 || index >= 3)
+					Internal.ThrowIndexOutOfRange(1);
+#endif
+
+				return ref (&X)[index];
+			}
+		}
+
+		public int32 MagnitudeSquared() => X * X + Y * Y + Z * Z;
+
+		public float Magnitude() => Math.Sqrt(X * X + Y * Y + Z * Z);
+
+		public Int32_3 Abs() => .(Math.Abs(X), Math.Abs(Y), Math.Abs(Z));
+
+		//
+		// Assignment operators
+		//
+
+		public void operator +=(Int32_3 value) mut
+		{
+			X += value.X;
+			Y += value.Y;
+			Z += value.Z;
+		}
+
+		public void operator +=(int32 value) mut
+		{
+			X += value;
+			Y += value;
+			Z += value;
+		}
+		
+		public void operator -=(Int32_3 value) mut
+		{
+			X -= value.X;
+			Y -= value.Y;
+			Z -= value.Z;
+		}
+
+		public void operator -=(int32 value) mut
+		{
+			X -= value;
+			Y -= value;
+			Z -= value;
+		}
+		
+		public void operator *=(Int32_3 value) mut
+		{
+			X *= value.X;
+			Y *= value.Y;
+			Z *= value.Z;
+		}
+
+		public void operator *=(int32 value) mut
+		{
+			X *= value;
+			Y *= value;
+			Z *= value;
+		}
+		
+		public void operator /=(Int32_3 value) mut
+		{
+			X /= value.X;
+			Y /= value.Y;
+			Z /= value.Z;
+		}
+
+		public void operator /=(int32 value) mut
+		{
+			X /= value;
+			Y /= value;
+			Z /= value;
+		}
+
+		// Operators
+
+		public static Int32_3 operator +(Int32_3 value) => value;
+		public static Int32_3 operator +(Int32_3 left, Int32_3 right) => .(left.X + right.X, left.Y + right.Y, left.Z + right.Z);
+		public static Int32_3 operator +(Int32_3 left, int32 right) => .(left.X + right, left.Y + right, left.Z + right);
+		public static Int32_3 operator +(int32 left, Int32_3 right) => .(left + right.X, left + right.Y, left + right.Z);
+
+		public static Int32_3 operator -(Int32_3 value) => .(-value.X, -value.Y, -value.Z);
+		public static Int32_3 operator -(Int32_3 left, Int32_3 right) => .(left.X - right.X, left.Y - right.Y, left.Z - right.Z);
+		public static Int32_3 operator -(Int32_3 left, int32 right) => .(left.X - right, left.Y - right, left.Z- right);
+		public static Int32_3 operator -(int32 left, Int32_3 right) => .(left - right.X, left - right.Y, left - right.Z);
+		
+		public static Int32_3 operator *(Int32_3 left, Int32_3 right) => .(left.X * right.X, left.Y * right.Y, left.Z * right.Z);
+		public static Int32_3 operator *(Int32_3 left, int32 right) => .(left.X * right, left.Y * right, left.Z * right);
+		public static Int32_3 operator *(int32 left, Int32_3 right) => .(left * right.X, left * right.Y, left * right.Z);
+		
+		public static Int32_3 operator /(Int32_3 left, Int32_3 right) => .(left.X / right.X, left.Y / right.Y, left.Z / right.Z);
+		public static Int32_3 operator /(Int32_3 left, int32 right) => .(left.X / right, left.Y / right, left.Z / right);
+		public static Int32_3 operator /(int32 left, Int32_3 right) => .(left / right.X, left / right.Y, left / right.Z);
+		
+		public static Int32_3 operator %(Int32_3 left, Int32_3 right) => .(left.X % right.X, left.Y % right.Y, left.Z % right.Z);
+		public static Int32_3 operator %(Int32_3 left, int32 right) => .(left.X % right, left.Y % right, left.Z % right);
+		public static Int32_3 operator %(int32 left, Int32_3 right) => .(left % right.X, left % right.Y, left % right.Z);
+
+		public static bool operator ==(Int32_3 left, Int32_3 right) => left.X == right.X && left.Y == right.Y && left.Z == right.Z;
+		public static bool operator ==(Int32_3 left, int32 right) => left.X == right && left.Y == right && left.Z == right;
+		public static bool operator ==(int32 left, Int32_3 right) => left == right.X && left == right.Y && left == right.Z;
+
+		public static bool operator !=(Int32_3 left, Int32_3 right) => left.X != right.X || left.Y != right.Y || left.Z != right.Z;
+		public static bool operator !=(Int32_3 left, int32 right) => left.X != right || left.Y != right || left.Z != right;
+		public static bool operator !=(int32 left, Int32_3 right) => left != right.X || left != right.Y || left != right.Z;
+
+		public override void ToString(String strBuffer) => strBuffer.AppendF($"X:{X} Y:{Y} Z:{Z}");
+
+		public static explicit operator Vector3(Int32_3 point) => .(point.X, point.Y, point.Z);
+
+		public static explicit operator Int32_3(Vector3 point) => .((int32)point.X, (int32)point.Y, (int32)point.Z);
+
+		[Inline]
+		public static explicit operator Int32_2(in Int32_3 point) => *(Int32_2*)&point;
+
+		public int GetHashCode()
+		{
+			return (((X * 39) ^ Y) * 39) ^ Z;
+		}
+	}
+}

GlitchyEngine/src/Math/Vectors/Int32_4.bf

@@ -0,0 +1,234 @@
+#pragma warning disable 4204
+
+using System;
+using System.Diagnostics;
+
+namespace GlitchyEngine.Math
+{
+	/**
+	 * A Vector with four components of type int32.
+	 */
+	[SwizzleVector(4, "Int32_")]
+	public struct Int32_4 : IHashable
+	{
+		public const Int32_4 Zero  = .(0, 0, 0, 0);
+		public const Int32_4 UnitX = .(1, 0, 0, 0);
+		public const Int32_4 UnitY = .(0, 1, 0, 0);
+		public const Int32_4 UnitZ = .(0, 0, 1, 0);
+		public const Int32_4 UnitW = .(0, 0, 0, 1);
+		public const Int32_4 One   = .(1, 1, 1, 1);
+
+		public int32 X, Y, Z, W;
+
+		public this() => this = default;
+
+		public this(int32 value)
+		{
+			X = value;
+			Y = value;
+			Z = value;
+			W = value;
+		}
+		
+		public this(int value)
+		{
+			X = (.)value;
+			Y = (.)value;
+			Z = (.)value;
+			W = (.)value;
+		}
+
+		public this(int32 x, int32 y, int32 z, int32 w)
+		{
+			X = x;
+			Y = y;
+			Z = z;
+			W = w;
+		}
+		
+		public this(Int32_2 xy, int32 z, int32 w)
+		{
+			X = xy.X;
+			Y = xy.Y;
+			Z = z;
+			W = w;
+		}
+		
+		public this(int32 x, Int32_2 yz, int32 w)
+		{
+			X = x;
+			Y = yz.X;
+			Z = yz.Y;
+			W = w;
+		}
+		
+		public this(int32 x, int32 y, Int32_2 zw)
+		{
+			X = x;
+			Y = y;
+			Z = zw.X;
+			W = zw.Y;
+		}
+
+		public this(Int32_2 xy, Int32_2 zw)
+		{
+			X = xy.X;
+			Y = xy.Y;
+			Z = zw.X;
+			W = zw.Y;
+		}
+		
+		public this(Int32_3 xyz, int32 w)
+		{
+			X = xyz.X;
+			Y = xyz.Y;
+			Z = xyz.Z;
+			W = w;
+		}
+
+		public this(int32 x, Int32_3 yzw)
+		{
+			X = x;
+			Y = yzw.X;
+			Z = yzw.Y;
+			W = yzw.Z;
+		}
+
+		public ref int32 this[int index]
+		{
+			[Inline]
+			get
+			{
+#if DEBUG
+				if(index < 0 || index >= 3)
+					Internal.ThrowIndexOutOfRange(1);
+#endif
+
+				return ref (&X)[index];
+			}
+		}
+
+		public int32 MagnitudeSquared() => X * X + Y * Y + Z * Z + W * W;
+
+		public float Magnitude() => Math.Sqrt(X * X + Y * Y + Z * Z + W * W);
+
+		public Int32_4 Abs() => .(Math.Abs(X), Math.Abs(Y), Math.Abs(Z), Math.Abs(W));
+
+		//
+		// Assignment operators
+		//
+
+		public void operator +=(Int32_4 value) mut
+		{
+			X += value.X;
+			Y += value.Y;
+			Z += value.Z;
+			W += value.W;
+		}
+
+		public void operator +=(int32 value) mut
+		{
+			X += value;
+			Y += value;
+			Z += value;
+			W += value;
+		}
+		
+		public void operator -=(Int32_4 value) mut
+		{
+			X -= value.X;
+			Y -= value.Y;
+			Z -= value.Z;
+			W -= value.W;
+		}
+
+		public void operator -=(int32 value) mut
+		{
+			X -= value;
+			Y -= value;
+			Z -= value;
+			W -= value;
+		}
+		
+		public void operator *=(Int32_4 value) mut
+		{
+			X *= value.X;
+			Y *= value.Y;
+			Z *= value.Z;
+			W *= value.W;
+		}
+
+		public void operator *=(int32 value) mut
+		{
+			X *= value;
+			Y *= value;
+			Z *= value;
+			W *= value;
+		}
+		
+		public void operator /=(Int32_4 value) mut
+		{
+			X /= value.X;
+			Y /= value.Y;
+			Z /= value.Z;
+			W /= value.W;
+		}
+
+		public void operator /=(int32 value) mut
+		{
+			X /= value;
+			Y /= value;
+			Z /= value;
+			W /= value;
+		}
+
+		// Operators
+
+		public static Int32_4 operator +(Int32_4 value) => value;
+		public static Int32_4 operator +(Int32_4 left, Int32_4 right) => .(left.X + right.X, left.Y + right.Y, left.Z + right.Z, left.W + right.W);
+		public static Int32_4 operator +(Int32_4 left, int32 right) => .(left.X + right, left.Y + right, left.Z + right, left.W + right);
+		public static Int32_4 operator +(int32 left, Int32_4 right) => .(left + right.X, left + right.Y, left + right.Z, left + right.W);
+
+		public static Int32_4 operator -(Int32_4 value) => .(-value.X, -value.Y, -value.Z, -value.W);
+		public static Int32_4 operator -(Int32_4 left, Int32_4 right) => .(left.X - right.X, left.Y - right.Y, left.Z - right.Z, left.W - right.W);
+		public static Int32_4 operator -(Int32_4 left, int32 right) => .(left.X - right, left.Y - right, left.Z - right, left.W - right);
+		public static Int32_4 operator -(int32 left, Int32_4 right) => .(left - right.X, left - right.Y, left - right.Z, left - right.W);
+		
+		public static Int32_4 operator *(Int32_4 left, Int32_4 right) => .(left.X * right.X, left.Y * right.Y, left.Z * right.Z, left.W * right.W);
+		public static Int32_4 operator *(Int32_4 left, int32 right) => .(left.X * right, left.Y * right, left.Z * right, left.W * right);
+		public static Int32_4 operator *(int32 left, Int32_4 right) => .(left * right.X, left * right.Y, left * right.Z, left * right.W);
+		
+		public static Int32_4 operator /(Int32_4 left, Int32_4 right) => .(left.X / right.X, left.Y / right.Y, left.Z / right.Z, left.W / right.W);
+		public static Int32_4 operator /(Int32_4 left, int32 right) => .(left.X / right, left.Y / right, left.Z / right, left.W / right);
+		public static Int32_4 operator /(int32 left, Int32_4 right) => .(left / right.X, left / right.Y, left / right.Z, left / right.W);
+		
+		public static Int32_4 operator %(Int32_4 left, Int32_4 right) => .(left.X % right.X, left.Y % right.Y, left.Z % right.Z, left.W % right.W);
+		public static Int32_4 operator %(Int32_4 left, int32 right) => .(left.X % right, left.Y % right, left.Z % right, left.W % right);
+		public static Int32_4 operator %(int32 left, Int32_4 right) => .(left % right.X, left % right.Y, left % right.Z, left % right.W);
+
+		public static bool operator ==(Int32_4 left, Int32_4 right) => left.X == right.X && left.Y == right.Y && left.Z == right.Z && left.W == right.W;
+		public static bool operator ==(Int32_4 left, int32 right) => left.X == right && left.Y == right && left.Z == right && left.W == right;
+		public static bool operator ==(int32 left, Int32_4 right) => left == right.X && left == right.Y && left == right.Z && left == right.W;
+
+		public static bool operator !=(Int32_4 left, Int32_4 right) => left.X != right.X || left.Y != right.Y || left.Z != right.Z || left.W != right.W;
+		public static bool operator !=(Int32_4 left, int32 right) => left.X != right || left.Y != right || left.Z != right || left.W != right;
+		public static bool operator !=(int32 left, Int32_4 right) => left != right.X || left != right.Y || left != right.Z || left != right.W;
+
+		public override void ToString(String strBuffer) => strBuffer.AppendF($"X:{X} Y:{Y} Z:{Z} W:{W}");
+
+		public static explicit operator Vector4(Int32_4 point) => .(point.X, point.Y, point.Z, point.W);
+
+		public static explicit operator Int32_4(Vector4 point) => .((int32)point.X, (int32)point.Y, (int32)point.Z, (int32)point.W);
+
+		[Inline]
+		public static explicit operator Int32_2(in Int32_4 point) => *(Int32_2*)&point;
+
+		[Inline]
+		public static explicit operator Int32_3(in Int32_4 point) => *(Int32_3*)&point;
+
+		public int GetHashCode()
+		{
+			return (((((X * 39) ^ Y) * 39) ^ Z) * 39) ^ W;
+		}
+	}
+}

GlitchyEngine/src/Platform/DX11/Renderer/Dx11DepthStencilTarget.bf

@@ -0,0 +1,38 @@
+using DirectX.D3D11;
+using internal GlitchyEngine.Renderer;
+
+namespace GlitchyEngine.Renderer
+{
+	extension DepthStencilTarget
+	{
+		internal ID3D11DepthStencilView* nativeView ~ _?.Release();
+
+		protected override void PlatformCreate()
+		{
+			Texture2DDescription desc = .();
+			desc.Format = .D32_Float;
+			desc.ArraySize = 1;
+			desc.BindFlags = .DepthStencil;
+			desc.Width = _width;
+			desc.Height = _height;
+			desc.SampleDesc = .(1, 0);
+
+			ID3D11Texture2D* tex = ?;
+			_context.nativeDevice.CreateTexture2D(ref desc, null, &tex);
+
+			_context.nativeDevice.CreateDepthStencilView(tex, null, &nativeView);
+
+			tex.Release();
+		}
+
+		public override void Bind()
+		{
+			_context.SetDepthStencilTarget(this);
+		}
+
+		public override void Clear(float depthValue, uint8 stencilValue, DepthStencilClearFlag clearFlags)
+		{
+			_context.nativeContext.ClearDepthStencilView(nativeView, (.)clearFlags, depthValue, stencilValue);
+		}
+	}
+}

GlitchyEngine/src/Platform/DX11/Renderer/Dx11GraphicsContext.bf

@@ -93,8 +93,14 @@ namespace GlitchyEngine.Renderer
 
 		
 		
+		private ID3D11DepthStencilView* _depthStencilTarget;
 		private ID3D11RenderTargetView*[MaxRTVCount] _renderTargets;
 		
+		internal void SetDepthStencilTarget(DepthStencilTarget target)
+		{
+			_depthStencilTarget = target?.nativeView;
+		}
+
 		public override void SetRenderTarget(RenderTarget renderTarget, int slot = 0)
 		{
 			if(renderTarget == null)
@@ -109,7 +115,7 @@ namespace GlitchyEngine.Renderer
 
 		public override void BindRenderTargets()
 		{
-			nativeContext.OutputMerger.SetRenderTargets(MaxRTVCount, &_renderTargets, null);
+			nativeContext.OutputMerger.SetRenderTargets(MaxRTVCount, &_renderTargets, _depthStencilTarget);
 		}
 
 		public override void ClearRenderTarget(RenderTarget renderTarget, ColorRGBA color)

GlitchyEngine/src/Platform/DX11/Renderer/Dx11RendererAPI.bf

@@ -1,5 +1,7 @@
 using GlitchyEngine.Math;
 
+using internal GlitchyEngine.Renderer;
+
 namespace GlitchyEngine.Renderer
 {
 	extension RendererAPI
@@ -24,6 +26,11 @@ namespace GlitchyEngine.Renderer
 			_context.ClearRenderTarget(renderTarget, clearColor);
 		}
 
+		public override void Clear(DepthStencilTarget target, float depthValue, uint8 stencilValue, DepthStencilClearFlag clearFlags)
+		{
+			_context.nativeContext.ClearDepthStencilView(target.nativeView, (.)clearFlags, depthValue, stencilValue);
+		}
+
 		public override void DrawIndexed(GeometryBinding geometry)
 		{
 			_context.DrawIndexed(geometry.IndexCount, geometry.IndexByteOffset, 0);

GlitchyEngine/src/Platform/DX11/Renderer/Dx11Texture.bf

@@ -5,13 +5,50 @@ using DirectXTK;
 
 using internal GlitchyEngine.Renderer;
 
+typealias NativeTex2DDesc = DirectX.D3D11.Texture2DDescription;
+
 namespace GlitchyEngine.Renderer
 {
+	extension Texture
+	{
+		protected internal ID3D11ShaderResourceView* nativeView ~ _?.Release();
+
+		protected override void ImplBind(uint32 slot)
+		{
+			_context.nativeContext.VertexShader.SetShaderResources(slot, 1, &nativeView);
+			_context.nativeContext.PixelShader.SetShaderResources(slot, 1, &nativeView);
+		}
+	}
+
+	extension Texture2DDesc
+	{
+		public NativeTex2DDesc ToNative()
+		{
+			NativeTex2DDesc desc;
+
+			desc.Width = Width;
+			desc.Height = Height;
+			desc.MipLevels = MipLevels;
+			desc.ArraySize = ArraySize;
+			desc.Format = Format;
+
+			// TODO: missing options
+			desc.SampleDesc = .(1, 0);
+			desc.Usage = .Immutable;
+			desc.BindFlags = .ShaderResource;
+			desc.CpuAccessFlags = .None;
+			desc.MiscFlags = .None;
+
+			return desc;
+		}
+
+		public static implicit operator NativeTex2DDesc(Self desc) => desc.ToNative();
+	}
+
 	extension Texture2D
 	{
-		internal ID3D11Texture2D* nativeTexture ~ _?.Release();
+		protected internal ID3D11Texture2D* nativeTexture ~ _?.Release();
-		internal ID3D11ShaderResourceView* nativeView ~ _?.Release();
+		protected internal NativeTex2DDesc nativeDesc;
-		internal Texture2DDescription nativeDesc;
 
 		public override uint32 Width => nativeDesc.Width;
 		public override uint32 Height => nativeDesc.Height;
@@ -36,13 +73,65 @@ namespace GlitchyEngine.Renderer
 				// TODO: load fallback texture
 			}
 			
+			let resType = nativeTexture.GetResourceType();
+			Log.EngineLogger.Assert(resType == .Texture2D, scope $"The texture \"{_path}\" is not a 2D texture (it is {resType}).");
+
 			nativeTexture.GetDescription(out nativeDesc);
 		}
 
-		protected override void ImplBind(uint32 slot)
+		protected override void CreateTexturePlatform(Texture2DDesc desc, void* data, uint32 linePitch)
 		{
-			_context.nativeContext.VertexShader.SetShaderResources(slot, 1, &nativeView);
+			nativeTexture?.Release();
-			_context.nativeContext.PixelShader.SetShaderResources(slot, 1, &nativeView);
+			nativeView?.Release();
+
+			nativeDesc = desc;
+			SubresourceData resData = .(data, linePitch, 0);
+			
+			var result = _context.[Friend]nativeDevice.CreateTexture2D(ref nativeDesc, &resData, &nativeTexture);
+
+			Log.EngineLogger.Assert(result.Succeeded, scope $"Failed to create texture 2D. Error ({result.Underlying}): {result}");
+
+			result = _context.[Friend]nativeDevice.CreateShaderResourceView(nativeTexture, null, &nativeView);
+			
+			Log.EngineLogger.Assert(result.Succeeded, scope $"Failed to create texture view. Error ({result.Underlying}): {result}");
+		}
+	}
+
+	extension TextureCube
+	{
+		protected internal ID3D11Texture2D* nativeTexture ~ _?.Release();
+		protected internal NativeTex2DDesc nativeDesc;
+		
+		public override uint32 Width => nativeDesc.Width;
+		public override uint32 Height => nativeDesc.Height;
+		public override uint32 ArraySize => nativeDesc.ArraySize / 6;
+		public override uint32 MipLevels => nativeDesc.MipLevels;
+
+		protected override void LoadTexturePlatform()
+		{
+			nativeTexture?.Release();
+			nativeView?.Release();
+
+			HResult loadResult = DDSTextureLoader.CreateDDSTextureFromFile(_context.nativeDevice, _path.ToScopedNativeWChar!(),
+				(.)&nativeTexture, &nativeView);
+
+			if(loadResult.Failed)
+			{
+				Log.EngineLogger.Error($"Failed to load texture \"{_path}\". Error({(int)loadResult}): {loadResult}");
+				
+				nativeTexture?.Release();
+				nativeView?.Release();
+
+				// TODO: load fallback texture
+			}
+
+			let resType = nativeTexture.GetResourceType();
+			Log.EngineLogger.Assert(resType == .Texture2D, scope $"The texture \"{_path}\" is not a texture cube (it is {resType}).");
+
+			nativeTexture.GetDescription(out nativeDesc);
+
+			Log.EngineLogger.Assert(nativeDesc.MiscFlags.HasFlag(.TextureCube), scope $"The texture \"{_path}\" is not a texture cube.");
+			// TODO: load fallback texture
 		}
 	}
 }

GlitchyEngine/src/Platform/Windows/Threading/WindowsMutex.bf

@@ -0,0 +1,49 @@
+#if BF_PLATFORM_WINDOWS
+
+using static System.Windows;
+
+namespace GlitchyEngine.Threading
+{
+	extension Mutex
+	{
+		internal Handle nativeHandle;
+
+		public this(bool initialyOwned = false)
+		{
+			nativeHandle = CreateMutexW(null, initialyOwned, null);
+			
+			Log.EngineLogger.AssertDebug(nativeHandle != 0, scope $"Failed to create mutex. Error code: {GetLastError()}");
+		}
+
+		public ~this()
+		{
+			CloseHandle(nativeHandle);
+		}
+
+		public override LockResult Lock(uint32 timeout = InfiniteTimeout)
+		{
+			int i = WaitForSingleObject(nativeHandle, timeout);
+
+			switch(i)
+			{
+			case 0x00000000L:
+				return .Released;
+			case 0x00000080L:
+				return .Abandoned;
+			case 0x00000102L:
+				return .Timeout;
+			case 0xFFFFFFFF:
+				return .Failed;
+			default:
+				return .Unknown;
+			}
+		}
+
+		public bool Unlock()
+		{
+			return ReleaseMutex(nativeHandle);
+		}
+	}
+}
+
+#endif

GlitchyEngine/src/Platform/Windows/Threading/WindowsSemaphore.bf

@@ -0,0 +1,55 @@
+#if BF_PLATFORM_WINDOWS
+
+using static System.Windows;
+
+namespace GlitchyEngine.Threading
+{
+	extension Semaphore
+	{
+		internal Handle nativeHandle;
+
+		public override this(int32 initialCount = 1, int32 maximumCount = 1)
+		{
+			nativeHandle = (.)CreateSemaphoreW(null, initialCount, maximumCount, null);
+			
+			Log.EngineLogger.AssertDebug(nativeHandle != 0, scope $"Failed to create semaphore. Error code: {GetLastError()}");
+		}
+
+		public ~this()
+		{
+			CloseHandle(nativeHandle);
+		}
+
+		public override LockResult Lock(uint32 timeout = InfiniteTimeout)
+		{
+			int i = WaitForSingleObject(nativeHandle, timeout);
+
+			switch(i)
+			{
+			case 0x00000000L:
+				return .Released;
+			case 0x00000080L:
+				return .Abandoned;
+			case 0x00000102L:
+				return .Timeout;
+			case 0xFFFFFFFF:
+				return .Failed;
+			default:
+				return .Unknown;
+			}
+		}
+
+		public bool Unlock(int32 releaseCount = 1)
+		{
+			return ReleaseSemaphore(nativeHandle, releaseCount, null);
+		}
+
+		public bool Unlock(out int32 previousCount, int32 releaseCount = 1)
+		{
+			previousCount = ?;
+			return ReleaseSemaphore(nativeHandle, releaseCount, &previousCount);
+		}
+	}
+}
+
+#endif

GlitchyEngine/src/Platform/Windows/WindowsExtension.bf

@@ -0,0 +1,38 @@
+namespace System
+{
+	extension Windows
+	{
+		public struct SecurityAttributes
+		{
+			public uint32 Length;
+			public SECURITY_DESCRIPTOR* SecurityDescriptor;
+			public IntBool InheritHandle;
+		}
+
+		[LinkName(.C)]
+		public static extern Windows.Handle CreateSemaphoreW(SecurityAttributes* semaphoreAttributes, int32 initialCount, int32 maximumCount, char16* name);
+
+		[LinkName(.C)]
+		public static extern uint32 WaitForSingleObject(Handle handle, uint32 timeout);
+
+		[LinkName(.C)]
+		public static extern uint32 WaitForMultipleObjects(uint32 count, Handle *handles, IntBool bWaitAll, uint32 timeout);
+
+		public const uint32 InfiniteTimeout = 0xFFFFFFFF;
+
+		[Inline]
+		public static uint32 WaitForMultipleObjects(Handle[] handles, bool waitForAll, uint32 timeout = InfiniteTimeout)
+		{
+			return WaitForMultipleObjects((.)handles.Count, handles.CArray(), waitForAll, timeout);
+		}
+
+		[LinkName(.C)]
+		public static extern IntBool ReleaseSemaphore(Handle semaphore, int32 releaseCount, int32* previousCount);
+
+		[LinkName(.C)]
+		public static extern Handle CreateMutexW(SecurityAttributes* mutexAttributes, IntBool initialOwner, char16* name);
+
+		[LinkName(.C)]
+		public static extern IntBool ReleaseMutex(Handle mutex);
+	}
+}

GlitchyEngine/src/Platform/Windows/WindowsInput.bf

@@ -12,12 +12,30 @@ namespace GlitchyEngine
 	/// Windows (WinApi) specific implementation of the Input-class
 	extension Input
 	{
+		internal static bool sUseRawInput = true;
+
+		public override static bool RawInput
+		{
+			get => sUseRawInput;
+			set
+			{
+				if(sUseRawInput == value)
+					return;
+
+				sUseRawInput = value;
+
+				//if(sUseRawInput)
+					// TODO: init raw input
+			}
+		}
+
 		/// Represents the state of the input devices on the windows platform (WinApi that is).
 		struct WindowsInputState
 		{
 			public int8[256] KeyStates;
 			public Point CursorPosition;
 			public Point CursorPositionDifference;
+			public Int32_2 RawMovement;
 		}
 
 		static WindowsInputState* CurrentState = new WindowsInputState() ~ delete _;
@@ -152,6 +170,19 @@ namespace GlitchyEngine
 		
 		public override static Point GetMouseMovement() => CurrentState.CursorPositionDifference;
 
+		public override static Int32_2 GetRawMouseMovement()
+		{
+			if(sUseRawInput)
+			{
+				return CurrentState.RawMovement;
+			}
+			else
+			{
+				var v = GetMouseMovement();
+
+				return *(Int32_2*)&v;
+			}
+		}
 
 		//[CLink, CallingConvention(.Stdcall)]
 		//static extern int16 GetKeyState(int32 keycode);
@@ -160,6 +191,8 @@ namespace GlitchyEngine
 		[CLink, CallingConvention(.Stdcall)]
 		static extern IntBool ScreenToClient(HWnd hWnd, ref Point p);
 
+		internal static Int32_2 rawMovement;
+
 		public override static void NewFrame()
 		{
 			// Switch last and current states
@@ -192,6 +225,8 @@ namespace GlitchyEngine
 
 			// Calculate cursor movement
 			CurrentState.CursorPositionDifference = CurrentState.CursorPosition - LastState.CursorPosition;
+			CurrentState.RawMovement = rawMovement;
+			rawMovement = .Zero;
 		}
 	}
 #endif

GlitchyEngine/src/Platform/Windows/WindowsWindow.bf

@@ -9,6 +9,7 @@ using GlitchyEngine.Events;
 using System.Diagnostics;
 using GlitchyEngine.Math;
 using GlitchyEngine.Renderer;
+using DirectX.Windows.Winuser.RawInput;
 using static System.Windows;
 
 namespace GlitchyEngine
@@ -215,6 +216,41 @@ namespace GlitchyEngine
 			LoadWindowRectangle();
 
 			Log.EngineLogger.Trace($"Created window \"{Title}\" ({Width}, {Height})");
+
+			if(Input.RawInput)
+			{
+				InitRawInput();
+			}
+		}
+
+		[CLink, CallingConvention(.Stdcall)]
+		static extern IntBool RegisterRawInputDevices(RAWINPUTDEVICE* rawInputDevices, uint32 numDevices, uint32 size);
+
+		private void InitRawInput()
+		{
+			RAWINPUTDEVICE[1] Rid;
+			        
+			Rid[0].UsagePage = 0x01;          // HID_USAGE_PAGE_GENERIC
+			Rid[0].Usage = 0x02;              // HID_USAGE_GENERIC_MOUSE
+			Rid[0].Flags = 0;//RIDEV_NOLEGACY;    // adds mouse and also ignores legacy mouse messages
+			Rid[0].Target = 0;
+			/*
+			Rid[1].UsagePage = 0x01;          // HID_USAGE_PAGE_GENERIC
+			Rid[1].Usage = 0x06;              // HID_USAGE_GENERIC_KEYBOARD
+			Rid[1].Flags = RIDEV_NOLEGACY;    // adds keyboard and also ignores legacy keyboard messages
+			Rid[1].Target = 0;
+			*/
+			if (!RegisterRawInputDevices(&Rid, Rid.Count, sizeof(RAWINPUTDEVICE)))
+			{
+				DirectX.Common.HResult errorCode = (.)GetLastError();
+				Log.EngineLogger.Error($"Failed to register raw input devices. Message({(int32)errorCode}):{errorCode}");
+				// Disable raw input
+				Input.RawInput = false;
+			}
+			else
+			{
+				Log.EngineLogger.Trace($"Registered raw input devices.");
+			}
 		}
 
 		private bool _isResizingOrMoving;
@@ -438,11 +474,128 @@ namespace GlitchyEngine
 
 					return 0;
 				}
+				// Raw Input
+			case 0x00FF: //WM_INPUT
+				{
+					uint32 dataSize = ?;
+					GetRawInputData((.)lParam, RID_INPUT, null, &dataSize, sizeof(RAWINPUTHEADER));
+
+					if (dataSize > 0)
+					{
+						uint8[] rawData = scope .[dataSize];
+						if (GetRawInputData((.)lParam, RID_INPUT, rawData.CArray(), &dataSize, sizeof(RAWINPUTHEADER)) == dataSize)
+						{
+							RAWINPUT* raw = (.)rawData.CArray();
+							if (raw.Header.Type == RIM_TYPEMOUSE)
+							{
+								int32 movementX = raw.Data.Mouse.lLastX;
+								int32 movementY = raw.Data.Mouse.lLastY;
+					
+								// TODO: raw.Data.Mouse.usFlags defines whether movement is abosulte, relative, etc...
+								Input.[Friend]rawMovement += .(movementX, movementY);
+								/*
+								var event = scope MouseMovedEvent(movementX, movementY);
+								window._eventCallback(event);
+								
+								// Convert button transition flags to a more manageable type
+								var buttonTransitions = (RawMouseButtonTransition)raw.Data.Mouse.DUMMYUNIONNAME.DUMMYSTRUCTNAME.usButtonFlags;
+
+								if(buttonTransitions.HasFlag(.LeftDown))
+								{
+									var buttonEvent = scope MouseButtonPressedEvent(.LeftButton);
+									window._eventCallback(buttonEvent);
+								}
+								else if(buttonTransitions.HasFlag(.LeftUp))
+								{
+									var buttonEvent = scope MouseButtonReleasedEvent(.LeftButton);
+									window._eventCallback(buttonEvent);
+								}
+
+								if(buttonTransitions.HasFlag(.RightDown))
+								{
+									var buttonEvent = scope MouseButtonPressedEvent(.RightButton);
+									window._eventCallback(buttonEvent);
+								}
+								else if(buttonTransitions.HasFlag(.RightUp))
+								{
+									var buttonEvent = scope MouseButtonReleasedEvent(.RightButton);
+									window._eventCallback(buttonEvent);
+								}
+
+								if(buttonTransitions.HasFlag(.MiddleDown))
+								{
+									var buttonEvent = scope MouseButtonPressedEvent(.MiddleButton);
+									window._eventCallback(buttonEvent);
+								}
+								else if(buttonTransitions.HasFlag(.MiddleUp))
+								{
+									var buttonEvent = scope MouseButtonReleasedEvent(.MiddleButton);
+									window._eventCallback(buttonEvent);
+								}
+
+								if(buttonTransitions.HasFlag(.XButton1Down))
+								{
+									var buttonEvent = scope MouseButtonPressedEvent(.XButton1);
+									window._eventCallback(buttonEvent);
+								}
+								else if(buttonTransitions.HasFlag(.XButton1Up))
+								{
+									var buttonEvent = scope MouseButtonReleasedEvent(.XButton1);
+									window._eventCallback(buttonEvent);
+								}
+
+								if(buttonTransitions.HasFlag(.XButton2Down))
+								{
+									var buttonEvent = scope MouseButtonPressedEvent(.XButton2);
+									window._eventCallback(buttonEvent);
+								}
+								else if(buttonTransitions.HasFlag(.XButton2Up))
+								{
+									var buttonEvent = scope MouseButtonReleasedEvent(.XButton2);
+									window._eventCallback(buttonEvent);
+								}
+
+								if(buttonTransitions.HasFlag(.MouseWheel))
+								{
+									int32 rotation = raw.Data.Mouse.DUMMYUNIONNAME.DUMMYSTRUCTNAME.usButtonData / WHEEL_DELTA;
+				
+									var scrollEvent = scope MouseScrolledEvent(0, rotation);
+									window._eventCallback(scrollEvent);
+								}
+
+								if(buttonTransitions.HasFlag(.MouseHWheel))
+								{
+									int32 rotation = raw.Data.Mouse.DUMMYUNIONNAME.DUMMYSTRUCTNAME.usButtonData / WHEEL_DELTA;
+				
+									var scrollEvent = scope MouseScrolledEvent(rotation, 0);
+									window._eventCallback(scrollEvent);
+								}
+								*/
+							}
+						}
+					}
+				}
 			}
 
 			return DefWindowProcW(hwnd, uMsg, wParam, lParam);
 		}
 
+		enum RawMouseButtonTransition
+		{
+			LeftDown = 0x0001,
+			LeftUp = 0x0002,
+			MiddleDown = 0x0010,
+			MiddleUp = 0x0020,
+			RightDown = 0x0004,
+			RightUp = 0x0008,
+			XButton1Down = 0x0040,
+			XButton1Up = 0x0080,
+			XButton2Down = 0x0100,
+			XButton2Up = 0x0200,
+			MouseWheel = 0x0400,
+			MouseHWheel = 0x0800
+		}
+
 		public override void Update()
 		{
 			Message message = .();

GlitchyEngine/src/Renderer/DepthStencilTarget.bf

@@ -0,0 +1,29 @@
+using System;
+namespace GlitchyEngine.Renderer
+{
+	// TODO: add all features.
+	public class DepthStencilTarget : RefCounted
+	{
+		protected internal GraphicsContext _context ~ _?.ReleaseRef();
+
+		protected uint32 _width, _height;
+
+		public uint32 Width => _width;
+		public uint32 Height => _height;
+
+		public this(GraphicsContext context, uint32 width, uint32 height)
+		{
+			_context = context..AddRef();
+			_width = width;
+			_height = height;
+
+			PlatformCreate();
+		}
+
+		protected extern void PlatformCreate();
+
+		public extern void Bind();
+
+		public extern void Clear(float depthValue, uint8 stencilValue, DepthStencilClearFlag clearFlags);
+	}
+}

GlitchyEngine/src/Renderer/Effect.bf

@@ -4,11 +4,97 @@ using System.Collections;
 
 namespace GlitchyEngine.Renderer
 {
+	public class EffectLibrary
+	{
+		private GraphicsContext _context ~ _?.ReleaseRef();
+		private Dictionary<String, Effect> _effects = new .() ~ delete _;
+
+		private List<String> _ownedStrings = new .() ~ DeleteContainerAndItems!(_);
+
+		public this(GraphicsContext context)
+		{
+			_context = context..AddRef();
+		}
+
+		public ~this()
+		{
+			for(let pair in _effects)
+			{
+				pair.value.ReleaseRef();
+			}
+		}
+
+		public void Add(Effect effect, String effectName = null)
+		{
+			String name;
+
+			if(effectName == null)
+			{
+				name = effect.Name;
+			}
+			else
+			{
+				name = new String(effectName);
+				_ownedStrings.Add(name);
+			}
+
+			Log.EngineLogger.AssertDebug(!Exists(name), "Can't add two effects with the same name to library.");
+
+			_effects.Add(name, effect..AddRef());
+		}
+
+		/**
+		 * Loads the effect with the given file name.
+		 * @param filepath The path to the effect file.
+		 * @param effectName The optional custom effect name which will be used to identify the effect.
+		 * @returns The loaded Effect. Note: This function will increment the reference counter of the effect, so the programmer must decrement it once it's not used anymore.
+		 *			If the return-value is not needed, use LoadNoRefInc instead.
+		 */
+		public Effect Load(String filepath, String effectName = null)
+		{
+			String name = effectName;
+
+			if(name == null)
+			{
+				name = scope:: String();
+				Path.GetFileNameWithoutExtension(filepath, name);
+			}
+			
+			Log.EngineLogger.AssertDebug(!Exists(name), "Can't add two effects with the same name to library.");
+
+			Effect effect = new Effect(_context, filepath, name);
+			Add(effect);
+
+			return effect;
+		}
+
+		/**
+		 * Loads the effect with the given file name.
+		 * @param filepath The path to the effect file.
+		 * @param effectName The optional custom effect name which will be used to identify the effect.
+		 */
+		public void LoadNoRefInc(String filepath, String effectName = null)
+		{
+			var v = Load(filepath, effectName);
+			v.ReleaseRef();
+		}
+
+		public Effect Get(String effectName)
+		{
+			Log.EngineLogger.AssertDebug(Exists(effectName), "Effect not found!");
+
+			return _effects.GetValue(effectName).Get()..AddRef();
+		}
+
+		public bool Exists(String effectName) => _effects.ContainsKey(effectName);
+	}
+
 	public class Effect : RefCounted
 	{
 		protected GraphicsContext _context ~ _?.ReleaseRef();
 		internal VertexShader _vs ~ _?.ReleaseRef();
 		internal PixelShader _ps ~ _?.ReleaseRef();
+		protected String _name ~ delete _;
 
 		BufferCollection _bufferCollection ~ delete _;
 
@@ -41,6 +127,8 @@ namespace GlitchyEngine.Renderer
 		public BufferCollection Buffers => _bufferCollection;
 		public BufferVariableCollection Variables => _variables;
 
+		public String Name => _name;
+
 		public void ApplyChanges()
 		{
 			for(let buffer in _bufferCollection)
@@ -65,13 +153,23 @@ namespace GlitchyEngine.Renderer
 		{
 		}
 		
-		public this(GraphicsContext context, String filename, String vsEntry, String psEntry)
+		public this(GraphicsContext context, String filename, String vsEntry, String psEntry, String shaderName = null)
 		{
 			_context = context..AddRef();
 			CompileFromFile(filename, vsEntry, psEntry);
+
+			if(shaderName == null)
+			{
+				_name = new String(shaderName);
+			}
+			else
+			{
+				_name = new String();
+				Path.GetFileNameWithoutExtension(filename, _name);
+			}
 		}
 
-		public this(GraphicsContext context, String filename)
+		public this(GraphicsContext context, String filename, String shaderName = null)
 		{
 			_context = context..AddRef();
 			
@@ -83,11 +181,23 @@ namespace GlitchyEngine.Renderer
 			Compile(fileContent, vsName, psName);
 
 			MergeResources();
+			
+			if(shaderName == null)
+			{
+				_name = new String();
+				Path.GetFileNameWithoutExtension(filename, _name);
+			}
+			else
+			{
+				_name = new String(shaderName);
+			}
 		}
 
-		public this(String vsPath, String vsEntry, String psPath, String psEntry)
+		public this(String shaderName, String vsPath, String vsEntry, String psPath, String psEntry)
 		{
 			Compile(vsPath, vsEntry, psPath, psEntry);
+			
+			_name = new String(shaderName);
 		}
 		
 		private void CompileFromFile(String filename, String vsEntry, String psEntry)

GlitchyEngine/src/Renderer/PerspectiveCamera.bf

@@ -87,9 +87,9 @@ namespace GlitchyEngine.Renderer
 			case .LimitedReversed:
 				_projection = Matrix.ReversedPerspectiveProjection(_fovY, _aspect, _nearPlane, _farPlane);
 			case .Infinite:
-				_projection = Matrix.InfinitePerspectiveProjection(_fovY, _aspect, _nearPlane); // todo: epsilon
+				_projection = Matrix.InfinitePerspectiveProjection(_fovY, _aspect, _nearPlane);
 			case .InfiniteReversed:
-				_projection = Matrix.ReversedInfinitePerspectiveProjection(_fovY, _aspect, _nearPlane); // todo: epsilon
+				_projection = Matrix.ReversedInfinitePerspectiveProjection(_fovY, _aspect, _nearPlane);
 			default:
 				Log.EngineLogger.Assert(false, "Unknown projection type.");
 			}

GlitchyEngine/src/Renderer/RasterizerState.bf

@@ -1,3 +1,4 @@
+using System;
 namespace GlitchyEngine.Renderer
 {
 	public enum FillMode
@@ -49,7 +50,7 @@ namespace GlitchyEngine.Renderer
 		public static readonly RasterizerStateDescription Default = .(.Solid, .Back, false, 0, 0f, 0f, true, false, false, false);
 	}
 
-	public class RasterizerState
+	public class RasterizerState : RefCounted
 	{
 		internal GraphicsContext _context ~ _?.ReleaseRef();
 		private RasterizerStateDescription _description;

GlitchyEngine/src/Renderer/RenderCommand.bf

@@ -3,6 +3,13 @@ using GlitchyEngine.Math;
 
 namespace GlitchyEngine.Renderer
 {
+	public enum DepthStencilClearFlag
+	{
+		None = 0,
+		Depth = 1,
+		Stencil = 2
+	}
+
 	public static class RenderCommand
 	{
 		private static RendererAPI _rendererAPI;
@@ -25,6 +32,13 @@ namespace GlitchyEngine.Renderer
 			_rendererAPI.Clear(renderTarget, color);
 		}
 		
+
+		[Inline]
+		public static void Clear(DepthStencilTarget target, float depthValue, uint8 stencilValue, DepthStencilClearFlag clearFlags)
+		{
+			_rendererAPI.Clear(target, depthValue, stencilValue, clearFlags);
+		}
+
 		[Inline]
 		public static void DrawIndexed(GeometryBinding geometry)
 		{

GlitchyEngine/src/Renderer/RendererAPI.bf

@@ -19,6 +19,8 @@ namespace GlitchyEngine.Renderer
 
 		public extern void Clear(RenderTarget renderTarget, ColorRGBA clearColor);
 
+		public extern void Clear(DepthStencilTarget target, float depthValue, uint8 stencilValue, DepthStencilClearFlag clearFlags);
+
 		public extern void DrawIndexed(GeometryBinding geometry);
 	}
 }

GlitchyEngine/src/Renderer/Texture.bf

@@ -38,7 +38,7 @@ namespace GlitchyEngine.Renderer
 				_samplerState.Bind(slot);
 		}
 
-		protected abstract void ImplBind(uint32 slot);
+		protected extern void ImplBind(uint32 slot);
 
 		protected this(GraphicsContext context)
 		{
@@ -46,6 +46,15 @@ namespace GlitchyEngine.Renderer
 		}
 	}
 
+	public struct Texture2DDesc
+	{
+		public uint32 Width;
+		public uint32 Height;
+		public uint32 ArraySize;
+		public uint32 MipLevels;
+		public Format Format;
+	}
+
 	public class Texture2D : Texture
 	{
 		protected String _path ~ delete _;
@@ -56,7 +65,30 @@ namespace GlitchyEngine.Renderer
 		public override extern uint32 ArraySize {get;}
 		public override extern uint32 MipLevels {get;}
 		
-		protected override extern void ImplBind(uint32 slot);
+		protected this(GraphicsContext context) : base(context) {}
+
+		public this(GraphicsContext context, String path) : base(context)
+		{
+			this._path = new String(path);
+			LoadTexturePlatform();
+		}
+
+		protected extern void LoadTexturePlatform();
+		
+		protected extern void CreateTexturePlatform(Texture2DDesc desc, void* data, uint32 linePitch);
+	}
+
+	public class TextureCube : Texture
+	{
+		protected String _path ~ delete _;
+		
+		public override extern uint32 Width {get;}
+		public override extern uint32 Height {get;}
+		public override uint32 Depth => 1;
+		public override extern uint32 ArraySize {get;}
+		public override extern uint32 MipLevels {get;}
+
+		protected this(GraphicsContext context) : base(context) {}
 		
 		public this(GraphicsContext context, String path) : base(context)
 		{

GlitchyEngine/src/Threading/LockResult.bf

@@ -0,0 +1,24 @@
+namespace GlitchyEngine.Threading
+{
+	public enum LockResult
+	{
+		/**
+		 * The lock was released by the owning thread.
+		 */
+		Released,
+		/**
+		 * The owning thread terminated without releasing the lock.
+		 */
+		Abandoned,
+		/**
+		 * The lock function timed out.
+		 */
+		Timeout,
+		/**
+		 * The function has failed.
+		 */
+		Failed,
+		
+		Unknown
+	}
+}

GlitchyEngine/src/Threading/Mutex.bf

@@ -0,0 +1,13 @@
+namespace GlitchyEngine.Threading
+{
+	public class Mutex
+	{
+		public extern this(bool initialyOwned = false);
+		
+		public const uint32 InfiniteTimeout = 0xFFFFFFFF;
+
+		public extern LockResult Lock(uint32 timeout = InfiniteTimeout);
+
+		public extern bool Unlock();
+	}
+}

GlitchyEngine/src/Threading/Semaphore.bf

@@ -0,0 +1,15 @@
+namespace GlitchyEngine.Threading
+{
+	public class Semaphore
+	{
+		public extern this(int32 initialCount = 1, int32 maximumCount = 1);
+
+		public const uint32 InfiniteTimeout = 0xFFFFFFFF;
+
+		public extern LockResult Lock(uint32 timeout = InfiniteTimeout);
+
+		public extern bool Unlock(int32 releaseCount = 1);
+
+		public extern bool Unlock(out int32 previousCount, int32 releaseCount = 1);
+	}
+}

GlitchyEngine/src/World/ComponentPool.bf

@@ -0,0 +1,30 @@
+using System;
+
+namespace GlitchyEngine.World
+{
+	public class ComponentPool
+	{
+		int _objectSize;
+		int _capacity;
+
+		int PoolSize => _objectSize * _capacity;
+
+		uint8* _rawData ~ delete _;
+
+		public this(int objectSize, int capacity)
+		{
+			_objectSize = objectSize;
+			_capacity = capacity;
+
+			_rawData = new uint8[_capacity * _objectSize]*;
+		}
+
+		[Inline]
+		public void* Get(int index)
+		{
+			Log.EngineLogger.AssertDebug(index >= 0 && index < _capacity);
+
+			return _rawData + index * _objectSize;
+		}
+	}
+}

GlitchyEngine/src/World/EcsWorld.bf

@@ -0,0 +1,250 @@
+using System;
+using System.Collections;
+using GlitchyEngine.Math;
+
+using internal GlitchyEngine.World;
+
+namespace GlitchyEngine.World
+{
+	public class EcsWorld
+	{
+		const int MaxEntities = 1024;
+		
+		typealias BitmaskEntry = (Entity ID, BitArray ComponentMask);
+		List<BitmaskEntry> _entities = new .();
+
+		List<uint32> _freeIndices = new List<uint32>() ~ delete _;
+
+		typealias ComponentPoolEntry = (uint32 Id, ComponentPool Pool);
+		Dictionary<Type, ComponentPoolEntry> _componentPools = new .();
+		
+		public ~this()
+		{
+			for(var entry in _componentPools)
+			{
+				delete entry.value.Pool;
+			}
+
+			delete _componentPools;
+
+			for(var entry in _entities)
+			{
+				delete entry.ComponentMask;
+			}
+
+			delete _entities;
+		}
+		
+		
+		/**
+		 * Registers a new Component.
+		 */
+		public void Register<T>() where T: struct
+		{
+			_componentPools.Add(typeof(T), ((uint32)_componentPools.Count, new ComponentPool(sizeof(T), MaxEntities)));
+		}
+
+		/**
+		 * Creates a new Entity and returns its ID.
+		 */
+		public Entity NewEntity()
+		{
+			Entity entity;
+
+			// Reuse freed entity slot
+			if(_freeIndices.Count > 0)
+			{
+				uint32 index = _freeIndices.PopBack();
+
+				entity = Entity.CreateEntityID(index, _entities[index].ID.Version);
+
+				_entities[index].ID = entity;
+			}
+			// Create new entity slot
+			else
+			{
+				entity = Entity.CreateEntityID((.)_entities.Count, 0);
+				_entities.Add((entity, new BitArray(_componentPools.Count)));
+			}
+
+			return entity;
+		}
+
+		/**
+		 * Removes the specified Entity from the World.
+		 */
+		public void RemoveEntity(Entity entity)
+		{
+			var listEntity = ref _entities[entity.Index];
+			if(entity != listEntity.ID)
+				return;
+
+			listEntity.ID = Entity.CreateEntityID(Entity.InvalidEntity.Index, entity.Version + 1);
+			
+			_entities[entity.Index].ComponentMask.Clear();
+			_freeIndices.Add(entity.Index);
+
+			// TODO: add "destructor" for components
+		}
+
+		/**
+		 * Assigns a component of type T to the specified entity and returns it.
+		 */
+		public T* AssignComponent<T>(Entity entity) where T : struct
+		{
+			if(entity.Index > _entities.Count)
+				return null;
+
+			var listEntity = ref _entities[entity.Index];
+
+			if(entity != listEntity.ID)
+				return null;
+
+			ComponentPoolEntry entry;
+			if(!_componentPools.TryGetValue(typeof(T), out entry))
+			{
+				entry = ((uint32)_componentPools.Count, new ComponentPool(sizeof(T), MaxEntities));
+
+				_componentPools.Add(typeof(T), entry);
+			}
+			
+			// TODO: maybe assert?
+			if(listEntity.ComponentMask[entry.Id])
+				return null;
+			
+			listEntity.ComponentMask[entry.Id] = true;
+			
+			return (.)entry.Pool.Get(entity.Index);
+		}
+
+		/**
+		 * Removes a component of type T from the specified entity.
+		 */
+		public void RemoveComponent<T>(Entity entity) where T : struct
+		{
+			if(entity.Index > _entities.Count)
+				return;
+
+			var listEntity = ref _entities[entity.Index];
+			if(entity != listEntity.ID)
+				return;
+			
+			ComponentPoolEntry entry;
+			if(!_componentPools.TryGetValue(typeof(T), out entry))
+				return;
+			
+			// TODO: maybe assert?
+			if(!listEntity.ComponentMask[entry.Id])
+				return;
+			
+			listEntity.ComponentMask[entry.Id] = false;
+		}
+
+		public T* GetComponent<T>(Entity entity) where T : struct
+		{
+			var listEntity = ref _entities[entity.Index];
+			if(entity != listEntity.ID)
+				return null;
+			
+			ComponentPoolEntry entry;
+			if(!_componentPools.TryGetValue(typeof(T), out entry))
+				return null;
+
+			// TODO: maybe assert?
+			if(!listEntity.ComponentMask[entry.Id])
+				return null;
+
+			return (.)entry.Pool.Get(entity.Index);
+		}
+		
+		public WorldEnumerator Enumerate(params Type[] componentTypes)
+		{
+			return WorldEnumerator(this, componentTypes);
+		}
+
+		public struct WorldEnumerator : IEnumerator<Entity>, IDisposable
+		{
+			private EcsWorld _world;
+			private BitArray _bitMask;
+			private BitmaskEntry* _currentEntry;
+			private BitmaskEntry* _endEntry;
+
+			public this(EcsWorld world, Type[] componentTypes)
+			{
+				_world = world;
+				_currentEntry = _world._entities.Ptr;
+				_endEntry = _world._entities.Ptr + _world._entities.Count;
+
+				_bitMask = new BitArray(_world._componentPools.Count);
+				for(var type in componentTypes)
+				{
+					Log.EngineLogger.AssertDebug(type.IsStruct, "Components can only be structs.");
+
+					var result = _world._componentPools.GetValue(type);
+
+					if(result case .Ok(let entry))
+					{
+						_bitMask[entry.Id] = true;
+					}
+					else
+					{
+						Log.EngineLogger.AssertDebug(false, "Queried component is not registered for this world. This is invalid because the query would never return any results.");
+					}
+				}
+			}
+
+			public Result<Entity> GetNext() mut
+			{
+				while(_currentEntry < _endEntry)
+				{
+					BitmaskEntry* entry = _currentEntry++;
+					// Check whether or not mask matches
+					if(entry.ComponentMask.MaskMatch(_bitMask))
+						return entry.ID;
+				}
+
+				return .Err;
+			}
+
+			public void Dispose()
+			{
+				delete _bitMask;
+			}
+		}
+
+		public static void Test()
+		{
+			EcsWorld world = new .();
+
+			world.Register<TransformComponent>();
+
+			Entity entity = world.NewEntity();
+
+			TransformComponent* myComp = world.AssignComponent<TransformComponent>(entity);
+			myComp.Transform = Matrix.Identity;
+
+			TransformComponent gotComp = *world.GetComponent<TransformComponent>(entity);
+
+			world.RemoveComponent<TransformComponent>(entity);
+
+			Entity entity2 = world.NewEntity();
+			world.AssignComponent<TransformComponent>(entity2);
+
+			world.RemoveEntity(entity);
+
+			entity = world.NewEntity();
+
+			world.RemoveEntity(entity);
+			world.RemoveComponent<TransformComponent>(entity);
+
+			entity = world.NewEntity();
+
+			for(let forenty in world.Enumerate(typeof(TransformComponent)))
+			{
+
+			}
+
+			delete world;
+		}
+	}
+}

GlitchyEngine/src/World/Entity.bf

@@ -0,0 +1,30 @@
+using System;
+
+using internal GlitchyEngine.World;
+
+namespace GlitchyEngine.World
+{
+	public struct Entity : uint64
+	{	
+		// Binary Format:
+		// Bits: [0 - 31] [32 - 64]
+		// Data: Version    Index
+
+		[Inline]
+		internal uint32 Version => (uint32)this;
+
+		[Inline]
+		internal uint32 Index => (uint32)(this >> 32);
+		
+		[Inline]
+		static internal Entity CreateEntityID(uint32 index, uint32 version)
+		{
+			return ((uint64)index << 32) | version;
+		}
+		
+		[Inline]
+		internal bool IsValid => Index != InvalidEntity.Index;
+
+		public const Entity InvalidEntity = ((uint64)uint32.MaxValue << 32) | 0;//TODO: Report bug: CreateEntityID(uint32.MaxValue, 0);
+	}
+}

GlitchyEngine/src/World/TransformComponent.bf

@@ -0,0 +1,19 @@
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.World
+{
+	public struct TransformComponent
+	{
+		static int _id;
+
+		public static int ID {get => _id; set => _id = value; }
+
+		internal Matrix _transform;
+
+		public Matrix Transform
+		{
+			get => _transform;
+			set mut => _transform = value;
+		}
+	}
+}

Sandbox/BeefProj.toml

@@ -1,5 +1,5 @@
 FileVersion = 1
-Dependencies = {GlitchyEngine = "*", corlib = "*"}
+Dependencies = {GlitchyEngine = "*", corlib = "*", LodePng = "*"}
 
 [Project]
 Name = "Sandbox"

Sandbox/src/SandboxApp.bf

@@ -8,6 +8,8 @@ using ImGui;
 using GlitchyEngine.Renderer;
 using GlitchyEngine.Math;
 
+using Sandbox.VoxelFun;
+
 namespace Sandbox
 {
 	class ExampleLayer : Layer
@@ -59,9 +61,6 @@ namespace Sandbox
 
 		RasterizerState _rasterizerState ~ delete _;
 
-		Effect _effect ~ _?.ReleaseRef();
-		Effect _textureEffect ~ _?.ReleaseRef();
-
 		GraphicsContext _context ~ _?.ReleaseRef();
 
 		Texture2D _texture ~ _?.ReleaseRef();
@@ -70,6 +69,8 @@ namespace Sandbox
 		BlendState _alphaBlendState ~ _?.ReleaseRef();
 		BlendState _opaqueBlendState ~ _?.ReleaseRef();
 
+		EffectLibrary _effectLibrary ~ delete _;
+
 		private Vector3 CircleCoord(float angle)
 		{
 			return .(Math.Cos(angle), Math.Sin(angle), 0);
@@ -80,13 +81,17 @@ namespace Sandbox
 		{
 			_context = Application.Get().Window.Context..AddRef();
 
-			_effect = new Effect(_context, "content\\Shaders\\basicShader.hlsl");
+			_effectLibrary = new EffectLibrary(_context);
 
-			_textureEffect = new Effect(_context, "content\\Shaders\\textureShader.hlsl");
+			_effectLibrary.LoadNoRefInc("content\\Shaders\\basicShader.hlsl");
+			
+			var textureEffect = _effectLibrary.Load("content\\Shaders\\textureShader.hlsl");
 
 			// Create Input Layout
 
-			_vertexLayout = new VertexLayout(_context, VertexColorTexture.VertexElements, _textureEffect.VertexShader);
+			_vertexLayout = new VertexLayout(_context, VertexColorTexture.VertexElements, textureEffect.VertexShader);
+
+			textureEffect.ReleaseRef();
 
 			// Create hexagon
 			{
@@ -239,29 +244,35 @@ namespace Sandbox
 			
 			_opaqueBlendState.Bind();
 
+			var basicEffect = _effectLibrary.Get("basicShader");
+			var textureEffect = _effectLibrary.Get("textureShader");
+
 			for(int x < 20)
 			for(int y < 20)
 			{
 				if((x + y) % 2 == 0)
-					_effect.Variables["BaseColor"].SetData(_squareColor0);
+					basicEffect.Variables["BaseColor"].SetData(_squareColor0);
 				else
-					_effect.Variables["BaseColor"].SetData(_squareColor1);
+					basicEffect.Variables["BaseColor"].SetData(_squareColor1);
 
 				Matrix transform = Matrix.Translation(x * 0.2f, y * 0.2f, 0) * Matrix.Scaling(0.1f);
-				Renderer.Submit(_quadGeometryBinding, _effect, transform);
+				Renderer.Submit(_quadGeometryBinding, basicEffect, transform);
 			}
 			
-			_effect.Variables["BaseColor"].SetData(_squareColor1);
+			basicEffect.Variables["BaseColor"].SetData(_squareColor1);
 
 			_texture.Bind();
-			Renderer.Submit(_quadGeometryBinding, _textureEffect, .Scaling(1.5f));
+			Renderer.Submit(_quadGeometryBinding, textureEffect, .Scaling(1.5f));
 			
 			_alphaBlendState.Bind();
 
 			_ge_logo.Bind();
-			Renderer.Submit(_quadGeometryBinding, _textureEffect, .Scaling(1.5f));
+			Renderer.Submit(_quadGeometryBinding, textureEffect, .Scaling(1.5f));
 
 			Renderer.EndScene();
+
+			basicEffect.ReleaseRef();
+			textureEffect.ReleaseRef();
 		}
 
 		ColorRGBA _squareColor0 = ColorRGBA.CornflowerBlue;
@@ -292,7 +303,8 @@ namespace Sandbox
 	{
 		public this()
 		{
-			PushLayer(new ExampleLayer());
+			PushLayer(new VoxelTestLayer());
+			//PushLayer(new ExampleLayer());
 		}
 
 		[Export, LinkName("CreateApplication")]

Sandbox/src/VoxelFun/Block.bf

@@ -0,0 +1,41 @@
+using GlitchyEngine;
+using GlitchyEngine.Math;
+
+namespace Sandbox.VoxelFun
+{
+	class Block
+	{
+		private Model _model;
+
+		private uint16 _blockID;
+
+		public uint16 ID => _blockID;
+
+		public Model Model => _model;
+
+		public BlockFace VisibleNeighbors {get;}
+
+		public this(BlockFace visibleNeighbors = .None)
+		{
+			VisibleNeighbors = visibleNeighbors;
+		}
+
+		/**
+		 * This method will be called when the block is being destroyed by the player.
+		 * @param blockCoordinate The coordinate the block is at.
+		 */
+		public virtual void OnBreaking(Int32_3 blockCoordinate)
+		{
+			Log.ClientLogger.Info($"I broke. {{{blockCoordinate}}}");
+		}
+
+		/**
+		 * This method will be called when the block is being placed by the player.
+		 * @param blockCoordinate The coordinate the block is at.
+		 */
+		public virtual void OnPlacing(Int32_3 blockCoordinate)
+		{
+			Log.ClientLogger.Info($"I live! {{{blockCoordinate}}}");
+		}
+	}
+}

Sandbox/src/VoxelFun/BlockModel.bf

@@ -0,0 +1,145 @@
+using System.Collections;
+using GlitchyEngine.Math;
+using static Sandbox.VoxelFun.VoxelTestLayer;
+namespace Sandbox.VoxelFun
+{
+	abstract class Model
+	{
+		public abstract void GenerateGeometry(Block block, Vector3 blockPosition, BlockFace visibleFaces, List<VertexColorTexture> vertices, List<uint32> indices, ref uint32 lastIndex);
+
+		protected static void AddQuadIndices(ref uint32 lastIndex, List<uint32> indices)
+		{
+			uint32[6] inds;
+			inds[0] = lastIndex;
+			inds[1] = lastIndex + 1;
+			inds[2] = lastIndex + 2;
+
+			inds[3] = lastIndex + 2;
+			inds[4] = lastIndex + 3;
+			inds[5] = lastIndex;
+
+			indices.AddRange(inds);
+			lastIndex += 4;
+		}
+	}
+
+	class BlockModel : Model
+	{
+		Color _color;
+
+		BlockTexture _textureTop;
+		BlockTexture _textureSide;
+		BlockTexture _textureBottom;
+		
+
+		public this(Color color)
+		{
+			_color = color;
+
+			bottomCoords = sideCoords = topCoords = (.Zero, .UnitX, .UnitY, .One);
+		}
+
+		public this(Color color, BlockTexture texture) : this(color, texture, texture, texture)
+		{
+		}
+		
+		public this(Color color, BlockTexture topTexture, BlockTexture sideTexture, BlockTexture bottomTexture)
+		{
+			_color = color;
+			_textureTop = topTexture;
+			_textureSide = sideTexture;
+			_textureBottom = bottomTexture;
+
+			CalculateTexCoords();
+		}
+
+		typealias TexCoords = (Vector2 Zero, Vector2 UnitX, Vector2 UnitY, Vector2 One);
+
+		TexCoords topCoords;
+		TexCoords sideCoords;
+		TexCoords bottomCoords;
+
+		private void CalculateTexCoords()
+		{
+			topCoords = GetQuadCoords(_textureTop);
+			sideCoords = GetQuadCoords(_textureSide);
+			bottomCoords = GetQuadCoords(_textureBottom);
+		}
+
+		private TexCoords GetQuadCoords(BlockTexture texture)
+		{
+			TexCoords coords;
+
+			coords.UnitX = texture.TransformTexCoords(.UnitX);
+			coords.UnitY = texture.TransformTexCoords(.UnitY);
+			coords.Zero = texture.TransformTexCoords(.Zero);
+			coords.One = texture.TransformTexCoords(.One);
+
+			return coords;
+		}
+
+		public override void GenerateGeometry(Block block, Vector3 blockPosition, BlockFace visibleFaces, List<VertexColorTexture> vertices, List<uint32> indices, ref uint32 lastIndex)
+		{
+
+			if(visibleFaces.HasFlag(.Back))
+			{
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 0, 0), _color, sideCoords.UnitY));
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 0, 0), _color, sideCoords.One));
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 1, 0), _color, sideCoords.UnitX));
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 1, 0), _color, sideCoords.Zero));
+	
+				AddQuadIndices(ref lastIndex, indices);
+			}
+	
+			if(visibleFaces.HasFlag(.Top))
+			{
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 1, 0), _color, topCoords.UnitY));
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 1, 0), _color, topCoords.One));
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 1, 1), _color, topCoords.UnitX));
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 1, 1), _color, topCoords.Zero));
+	
+				AddQuadIndices(ref lastIndex, indices);
+			}
+	
+			if(visibleFaces.HasFlag(.Bottom))
+			{
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 0, 1), _color, bottomCoords.UnitY));
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 0, 1), _color, bottomCoords.One));
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 0, 0), _color, bottomCoords.UnitX));
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 0, 0), _color, bottomCoords.Zero));
+	
+				AddQuadIndices(ref lastIndex, indices);
+			}
+	
+			if(visibleFaces.HasFlag(.Front))
+			{
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 0, 1), _color, sideCoords.UnitY));
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 0, 1), _color, sideCoords.One));
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 1, 1), _color, sideCoords.UnitX));
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 1, 1), _color, sideCoords.Zero));
+	
+				AddQuadIndices(ref lastIndex, indices);
+			}
+	
+			if(visibleFaces.HasFlag(.Right))
+			{
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 0, 0), _color, sideCoords.UnitY));
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 0, 1), _color, sideCoords.One));
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 1, 1), _color, sideCoords.UnitX));
+				vertices.Add(VertexColorTexture(blockPosition + .(1, 1, 0), _color, sideCoords.Zero));
+	
+				AddQuadIndices(ref lastIndex, indices);
+			}
+	
+			if(visibleFaces.HasFlag(.Left))
+			{
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 0, 1), _color, sideCoords.UnitY));
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 0, 0), _color, sideCoords.One));
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 1, 0), _color, sideCoords.UnitX));
+				vertices.Add(VertexColorTexture(blockPosition + .(0, 1, 1), _color, sideCoords.Zero));
+	
+				AddQuadIndices(ref lastIndex, indices);
+			}
+		}
+	}
+}

Sandbox/src/VoxelFun/BlockTexture.bf

@@ -0,0 +1,28 @@
+using System;
+using GlitchyEngine.Math;
+
+namespace Sandbox.VoxelFun
+{
+	class BlockTexture
+	{
+		private String _fileName;
+
+		public String FileName => _fileName;
+
+		private Vector2 _atlasStart;
+		private Vector2 _atlasSize;
+
+		[AllowAppend]
+		public this(String fileName)
+		{
+			String str = append String(fileName);
+
+			_fileName = str;
+		}
+
+		public Vector2 TransformTexCoords(Vector2 texCoords)
+		{
+			return _atlasStart + texCoords * _atlasSize;
+		}
+	}
+}

Sandbox/src/VoxelFun/BlockTextures.bf

@@ -0,0 +1,49 @@
+using System.Collections;
+using GlitchyEngine.Renderer;
+
+namespace Sandbox.VoxelFun
+{
+	class BlockTextures
+	{
+		static List<BlockTexture> _textures = new List<BlockTexture>() ~ DeleteContainerAndItems!(_);
+
+		static TextureAtlas _atlas ~ _?.ReleaseRef();
+			
+		public static BlockTexture Stone;
+		public static BlockTexture Dirt;
+		public static BlockTexture GrassTop;
+		public static BlockTexture GrassSide;
+
+		public static TextureAtlas Atlas => _atlas;
+
+		public static void Init(GraphicsContext context)
+		{
+			Stone = RegisterTexture(.. new BlockTexture("Content\\Textures\\Stone.png"));
+			Dirt = RegisterTexture(.. new BlockTexture("Content\\Textures\\Dirt.png"));
+			GrassTop = RegisterTexture(.. new BlockTexture("Content\\Textures\\GrassTop.png"));
+			GrassSide = RegisterTexture(.. new BlockTexture("Content\\Textures\\GrassSide.png"));
+
+			GenerateAtlas(context);
+		}
+
+		private static void RegisterTexture(BlockTexture texture)
+		{
+			_textures.Add(texture);
+		}
+
+		static void GenerateAtlas(GraphicsContext context)
+		{
+			_atlas = new TextureAtlas(context, _textures);
+
+			GlitchyEngine.Renderer.SamplerStateDescription desc = .();
+			desc.MagFilter = .Point;
+			desc.MinFilter = .Point;
+			desc.MipFilter = .Point;
+			desc.MipMaxLOD = 0;
+			desc.MipMinLOD = 0;
+			desc.MaxAnisotropy = 0;
+
+			_atlas.SamplerState = new SamplerState(context, desc)..ReleaseRefNoDelete();
+		}
+	}
+}

Sandbox/src/VoxelFun/Blocks.bf

@@ -0,0 +1,37 @@
+using System;
+using System.Collections;
+namespace Sandbox.VoxelFun
+{
+	static class Blocks
+	{
+		static uint16 _sLastId;
+		static List<Block> _blocks = new List<Block>() ~ DeleteContainerAndItems!(_);
+
+		/// Air is a special Block. It defines the absence of a block.
+		public static Block Air;
+
+		public static Block Stone;
+		public static Block Grass;
+		public static Block Dirt;
+
+		public static void Init()
+		{
+			Air = RegisterBlock(.. new Block(.All));
+			Stone = RegisterBlock(.. new Block());
+			Grass = RegisterBlock(.. new Block());
+			Dirt = RegisterBlock(.. new Block());
+		}
+
+		private static void RegisterBlock(Block block)
+		{
+			block.[Friend]_blockID = _sLastId;
+			_sLastId++;
+			_blocks.Add(block);
+		}
+
+		public static Block GetFromId(int id)
+		{
+			return _blocks[id];
+		}
+	}
+}

Sandbox/src/VoxelFun/ChunkManager.bf

@@ -0,0 +1,642 @@
+using GlitchyEngine.Math;
+using GlitchyEngine.Renderer;
+using System.Diagnostics;
+using System;
+using System.Collections;
+using System.Threading;
+using System.Collections;
+using GlitchyEngine.ImGui;
+using ImGui;
+using System.IO;
+using GlitchyEngine;
+using GlitchyEngine.Threading;
+
+namespace Sandbox.VoxelFun
+{
+	public class Chunk
+	{
+		public ChunkManager ChunkManager;
+		public GeometryBinding Geometry ~ _?.ReleaseRef();
+
+		public VoxelChunk Data;
+		public Matrix Transform;
+		public Int32_3 Position;
+		public Int32_3 Coordinate;
+
+		private bool _isDirty;
+		private bool _isGeometryDirty;
+
+		/// Neighbors that will trigger a regeneration of this chunks geometry
+		public BlockFace _reqiredNeighbors;
+
+		public bool IsDirty => _isDirty;
+
+		public bool IsGeometryDirty
+		{
+			get => _isGeometryDirty;
+			set => _isGeometryDirty = value;
+		}
+
+		public void SetBlock(Int32_3 coordinate, Block blockId)
+		{
+			Log.EngineLogger.AssertDebug(coordinate.X >= 0 && coordinate.Y >= 0 && coordinate.Z >= 0 && coordinate.X < VoxelChunk.Size.X && coordinate.Y < VoxelChunk.Size.Y && coordinate.Z < VoxelChunk.Size.Z, "Specified coordinate is out of range.");
+
+			Data.Data[coordinate.X][coordinate.Y][coordinate.Z] = blockId;
+
+			_isDirty = true;
+			_isGeometryDirty = true;
+			ChunkManager.[Friend]chunkPosLock.Exit();
+		}
+
+		public Block GetBlock(Int32_3 coordinate)
+		{
+			Log.EngineLogger.AssertDebug(coordinate.X >= 0 && coordinate.Y >= 0 && coordinate.Z >= 0 && coordinate.X < VoxelChunk.Size.X && coordinate.Y < VoxelChunk.Size.Y && coordinate.Z < VoxelChunk.Size.Z, "Specified coordinate is out of range.");
+
+			return Data.Data[coordinate.X][coordinate.Y][coordinate.Z];
+		}
+
+		public void Serialize(Stream stream)
+		{
+			uint16[VoxelChunk.SizeX][VoxelChunk.SizeY][VoxelChunk.SizeZ] rawData = ?;
+
+			for(int x = 0; x < VoxelChunk.SizeX; x++)
+			for(int y = 0; y < VoxelChunk.SizeY; y++)
+			for(int z = 0; z < VoxelChunk.SizeZ; z++)
+			{
+				rawData[x][y][z] = Data.Data[x][y][z].ID;
+			}
+			stream.Write(rawData);
+			_isDirty = false;
+		}
+	}
+
+	public class ChunkManager
+	{
+		GraphicsContext _context ~ _?.ReleaseRef();
+
+		int _viewDistance = 8;
+		private World _world;
+
+		private String _chunkBasePath ~ delete _;
+
+		Dictionary<Int32_3, Chunk> _chunks = new .() ~ delete _;
+
+		private HashSet<Int32_3> _generatingChunks = new .() ~ delete _;
+		private Monitor _generatingChunksLock = new .() ~ delete _;
+
+		public Effect TextureEffect ~ _?.ReleaseRef();
+		
+		VoxelGeometryGenerator voxelGeoGen = new VoxelGeometryGenerator() ~ delete _;
+
+		Thread chunkLoader;
+		bool stopChunkLoader;
+		Monitor chunkListLock = new Monitor() ~ delete _;
+
+		Int32_3 chunkPosition;
+		Int32_3 oldChunkPosition = .(Int.MaxValue, Int.MaxValue, Int.MaxValue);
+
+		Monitor chunkPosLock = new Monitor() ~ delete _;
+
+		Monitor chunkPosChanged = new Monitor()..Enter() ~ delete _;
+
+		public World World => _world;
+		
+		public delegate void ChunkLoadedHandler(Int32_3 chunkCoordinate);
+
+		Event<ChunkLoadedHandler> _chunkLoaded ~ _.Dispose();
+		Monitor _chunkLoadedLock = new Monitor() ~ delete _;
+		
+		public this(GraphicsContext context, VertexLayout vertexLayout, World world)
+		{
+			_context = context..AddRef();
+			_world = world;
+
+			_chunkBasePath = Path.InternalCombine(.. new String(), _world.Directory, "chunks", "");
+
+			if(!Directory.Exists(_chunkBasePath))
+			{
+				Directory.CreateDirectory(_chunkBasePath);
+			}
+
+			voxelGeoGen.Context = _context;
+			voxelGeoGen.Layout = vertexLayout;
+
+			chunkLoader = new Thread(new => ChunkLoaderThread_Entry);
+			chunkLoader.Start();
+
+		}
+
+		public ~this()
+		{
+			stopChunkLoader = true;
+
+			chunkLoader.Join();
+
+			// Unload (and save) all chunks
+			for(var pair in _chunks)
+			{
+				UnloadChunk(pair.value);
+			}
+		}
+
+		/**
+		 * Returns whether or not the chunk with the given coordinate is currently loaded.
+		 */
+		[Inline]
+		public bool IsChunkLoaded(Int32_3 chunkCoordinate)
+		{
+			using(chunkListLock.Enter())
+			{
+				return _chunks.ContainsKey(chunkCoordinate);
+			}
+		}
+
+		/**
+		 * Returns the chunk with the given chunk coordinate or null if the chunk isn't loaded.
+		 */
+		[Inline]
+		public Chunk GetChunk(Int32_3 chunkCoordinate)
+		{
+			using(chunkListLock.Enter())
+			{
+				return _chunks.TryGetValue(chunkCoordinate, let chunk) ? chunk : null;
+			}
+		}
+		
+		/**
+		 * Loads and returns the chunk with the given coordinate. If the chunk doesn't exist it will be generated.
+		 * @param chunkCoordinate The coordinate of the chunk to load.
+		 * @param noBlocking If set to true this method will not wait if the chunk cannot be loaded right now (because it is currently being loaded by another thread);
+		 *					 otherwise the method will block until the chunk has been loaded.
+		 * @returns The loaded chunk. If noBlocking is set to true and the chunk cannot be obtained right now the return value will be null.
+		 */
+		public Chunk LoadChunk(Int32_3 chunkCoordinate, bool noBlocking = false)
+		{
+			Chunk chunk = GetChunk(chunkCoordinate);
+
+			if(chunk == null)
+			{
+				// Add chunk coordinate to generating list
+				// If it could be added, we have to generate it ourselves, otherwise we have to wait for the other thread to finish.
+				bool alreadyInList = false;
+				using(_generatingChunksLock.Enter())
+				{
+					alreadyInList = !_generatingChunks.Add(chunkCoordinate);
+				}
+
+				if(!alreadyInList)
+				{
+					chunk = new Chunk();
+					chunk.ChunkManager = this;
+					chunk.Coordinate = chunkCoordinate;
+					chunk.Position = chunkCoordinate * .(VoxelChunk.SizeX, VoxelChunk.SizeY, VoxelChunk.SizeZ);
+					chunk.Transform = .Translation(chunk.Position.X, chunk.Position.Y, chunk.Position.Z);
+
+					if(LoadChunkFromFile(chunkCoordinate, chunk) case .Err)
+					{
+						GenTestChunk(chunk);
+						SaveChunkToFile(chunk);
+					}
+
+					chunk.IsGeometryDirty = true;
+
+					using(chunkListLock.Enter())
+					{
+						if(!_chunks.TryAdd(chunkCoordinate, chunk))
+						{
+							chunk = LoadChunk(chunkCoordinate);
+						}
+					}
+
+					using(_generatingChunksLock.Enter())
+					{
+						_generatingChunks.Remove(chunkCoordinate);
+					}
+
+					// Raise chunk loaded event (this will wake up all calls of LoadChunk waiting for our chunk)
+					OnChunkLoaded(chunkCoordinate);
+				}
+				else if(!noBlocking)
+				{
+					Semaphore semaphore = new Semaphore(0);
+					defer delete semaphore;
+
+					// event handler will increase semaphore as soon as our requested chunk is loaded.
+					ChunkLoadedHandler eventHandler = scope (coordinate) =>
+						{
+							if(coordinate == chunkCoordinate)
+							{
+								semaphore.Unlock();
+							}
+						};
+
+					// register event listener
+					using(_chunkLoadedLock.Enter())
+					{
+						_chunkLoaded.Add(eventHandler);
+					}
+					
+					Log.ClientLogger.Trace($"Sleeping until chunk ({chunkCoordinate}) has been generated...");
+
+					// wait for semaphore to be released (in the event handler)
+					semaphore.Lock();
+
+					// unregister event handler
+					using(_chunkLoadedLock.Enter())
+					{
+						_chunkLoaded.Remove(eventHandler);
+					}
+
+					// retry loading the chunk
+					chunk = LoadChunk(chunkCoordinate);
+				}
+			}
+
+			return chunk;
+		}
+
+		void OnChunkLoaded(Int32_3 chunkCoordinate)
+		{
+			// Raise chunk loaded event (this will wake up all calls of LoadChunk waiting for our chunk)
+			using(_chunkLoadedLock.Enter())
+			{
+				_chunkLoaded.Invoke(chunkCoordinate);
+			}
+
+			// Left
+			{
+				var chunkCoordinate;
+		
+				chunkCoordinate.X--;
+				Chunk neighbor = GetChunk(chunkCoordinate);
+		
+				if(neighbor != null && neighbor._reqiredNeighbors.HasFlag(.Right))
+					neighbor.IsGeometryDirty = true;
+			}
+
+			// Right
+			{
+				var chunkCoordinate;
+		
+				chunkCoordinate.X++;
+				Chunk neighbor = GetChunk(chunkCoordinate);
+		
+				if(neighbor != null && neighbor._reqiredNeighbors.HasFlag(.Left))
+					neighbor.IsGeometryDirty = true;
+			}
+			
+			// Back
+			{
+				var chunkCoordinate;
+
+				chunkCoordinate.Z--;
+				Chunk neighbor = GetChunk(chunkCoordinate);
+
+				if(neighbor != null && neighbor._reqiredNeighbors.HasFlag(.Front))
+					neighbor.IsGeometryDirty = true;
+			}
+
+			// Front
+			{
+				var chunkCoordinate;
+
+				chunkCoordinate.Z++;
+				Chunk neighbor = GetChunk(chunkCoordinate);
+
+				if(neighbor != null && neighbor._reqiredNeighbors.HasFlag(.Back))
+					neighbor.IsGeometryDirty = true;
+			}
+		}
+
+		void SetChunkPos(Int32_3 chunkPos)
+		{
+			chunkPosLock.Enter();
+
+			chunkPosition = chunkPos;
+
+			if(oldChunkPosition != chunkPosition)
+				chunkPosChanged.Exit();
+
+			chunkPosLock.Exit();
+		}
+
+		public void Update(Vector3 cameraPosition)
+		{
+			Vector3 chunkPosition = cameraPosition / .(VoxelChunk.SizeX, VoxelChunk.SizeY, VoxelChunk.SizeZ);
+
+			Int32_3 p = (Int32_3)chunkPosition;
+			p.Y = 0;
+
+			SetChunkPos(p);
+		}
+
+		/**
+		 * Entrypoint for the chunk loader thread.
+		 */
+		void ChunkLoaderThread_Entry()
+		{
+			Int32_3 curChunkPosition = .(0, 0, 0);
+			Int32_3 oldChunkPosition = .(Int.MaxValue, Int.MaxValue, Int.MaxValue);
+
+			while(!stopChunkLoader)
+			{
+				// Wait for chunkPos to change
+				chunkPosChanged.Enter();
+				
+				using(chunkPosLock.Enter())
+				{
+					curChunkPosition = chunkPosition;
+				}
+
+				// Position didn't change -> skip
+				//if(curChunkPosition == oldChunkPosition)
+				//	continue;
+
+				ChunkLoaderThread_GenerateChunks(curChunkPosition);
+
+				oldChunkPosition = curChunkPosition;
+			}
+		}
+
+		private void UnloadChunk(Chunk chunk)
+		{
+			if(chunk.IsDirty)
+			{
+				SaveChunkToFile(chunk);
+			}
+
+			using(chunkListLock.Enter())
+			{
+				_chunks.Remove(chunk.Coordinate);
+				delete chunk;
+			}
+		}
+
+		public void ChunkLoaderThread_GenerateChunks(Int32_3 chunkPos)
+		{
+			for(var chunk in _chunks)
+			{
+				Int32_3 dist = (chunk.key - chunkPos).Abs();
+
+				if(dist.X > _viewDistance || dist.Z > _viewDistance)
+				{
+					UnloadChunk(chunk.value);
+				}
+				else if(chunk.value.IsGeometryDirty)
+				{
+					GenChunkGeo(chunk.value);
+				}
+			}
+			
+			Int32_3 chunkCoordinate = (Int32_3)chunkPos;
+			int x = 0, z = 0;
+			for(int r = 1; r < _viewDistance; r++)
+			{
+				for(; x < r; x++, chunkCoordinate.X++)
+				{
+					LoadChunk(chunkCoordinate, true);
+				}
+
+				for(; z < r; z++, chunkCoordinate.Z++)
+				{
+					LoadChunk(chunkCoordinate, true);
+				}
+
+				for(; x > -r; x--, chunkCoordinate.X--)
+				{
+					LoadChunk(chunkCoordinate, true);
+				}
+				
+				for(; z > -r; z--, chunkCoordinate.Z--)
+				{
+					LoadChunk(chunkCoordinate, true);
+				}
+			}
+		}
+
+		Result<void> LoadChunkFromFile(Int32_3 chunkCoordinate, Chunk outChunk)
+		{
+			String chunkFileName = scope String(_chunkBasePath);
+			chunkFileName.AppendF($"{chunkCoordinate.X}_{chunkCoordinate.Y}_{chunkCoordinate.Z}.cdata");
+
+			if(!File.Exists(chunkFileName))
+				return .Err;
+			
+			uint16[VoxelChunk.SizeX][VoxelChunk.SizeY][VoxelChunk.SizeZ] rawData;
+
+			FileStream fs = scope FileStream();
+
+			fs.Open(chunkFileName, .Read, .Read);
+
+			rawData = fs.Read<decltype(rawData)>();
+
+			fs.Close();
+
+			for(int x = 0; x < VoxelChunk.SizeX; x++)
+			for(int y = 0; y < VoxelChunk.SizeY; y++)
+			for(int z = 0; z < VoxelChunk.SizeZ; z++)
+			{
+				outChunk.Data.Data[x][y][z] = Blocks.GetFromId(rawData[x][y][z]);
+			}
+
+			return .Ok;
+		}
+
+		Result<void> SaveChunkToFile(Chunk chunk)
+		{
+			String chunkFileName = scope String(_chunkBasePath);
+			chunkFileName.AppendF($"{chunk.Coordinate.X}_{chunk.Coordinate.Y}_{chunk.Coordinate.Z}.cdata");
+			
+			FileStream fs = scope FileStream();
+
+			fs.Open(chunkFileName, FileMode.Create, .Write);
+
+			chunk.Serialize(fs);
+
+			fs.Close();
+
+			return .Ok;
+		}
+
+		struct GeneratorSettings
+		{
+			public int32 ElevationOctaves = 5;
+			public float ElevationFrequency = 0.0075f;
+			public float ElevationLacunarity = 2f;
+			public float ElevationGain = 0.5f;
+
+			public Vector2 DetailAmplitude = .(32, 32);
+
+			public int32 TerrainFloorHeight = 128;
+			// The amplitude of the hills (eg. how high hills are and how deep valleys are)
+			public int32 TerrainAmplitude = 48;
+		}
+
+		void GenerateTerrain(Chunk chunk)
+		{
+			Stopwatch sw = .StartNew();
+
+			GeneratorSettings settings = .();
+			//settings.ElevationFrequency
+			
+			let groundNoise = scope FastNoiseLite.FastNoiseLite();
+			groundNoise.SetFractalType(.FBm);
+			groundNoise.SetFractalOctaves(settings.ElevationOctaves);
+			groundNoise.SetFractalLacunarity(settings.ElevationLacunarity);
+			groundNoise.SetFractalGain(settings.ElevationGain);
+			groundNoise.SetFrequency(settings.ElevationFrequency);
+			
+			for(int x < VoxelChunk.SizeX)
+			for(int y < VoxelChunk.SizeY)
+			for(int z < VoxelChunk.SizeZ)
+			{
+				float cx = x + chunk.Position.X;
+				float cy = y + chunk.Position.Y;
+				float cz = z + chunk.Position.Z;
+
+				cx += groundNoise.GetNoise(cz * 0.5f, cy) * settings.DetailAmplitude.X;
+				cz += groundNoise.GetNoise(cy, cx * 0.5f) * settings.DetailAmplitude.Y;
+
+				cy += groundNoise.GetNoise(cx, cz) * settings.TerrainAmplitude;
+
+				float gradientValue = cy / (float)(settings.TerrainFloorHeight * 2 - 1);
+
+				// determine whether or not gradient value is air
+				Block stepValue = gradientValue < 0.5f ? Blocks.Stone : Blocks.Air;
+
+				// Note these objects will be invalid
+				chunk.Data.Data[x][y][z] = stepValue;
+			}
+
+			sw.Stop();
+
+			Debug.WriteLine($"Terrain Generation: {sw.ElapsedMilliseconds}ms");
+
+			delete sw;
+		}
+
+		struct GroundLayer
+		{
+			public int Depth;
+			public Block BlockType;
+		}
+
+		void GroundLayers(Chunk chunk)
+		{
+			GroundLayer[3] layers;
+			layers[0] = .()
+			{
+				Depth = 1,
+				BlockType = Blocks.Grass
+			};
+			layers[1] = .()
+			{
+				Depth = 4,
+				BlockType = Blocks.Dirt
+			};
+			layers[2] = .()
+			{
+				Depth = 0,
+				BlockType = Blocks.Stone
+			};
+
+			for(int x < VoxelChunk.SizeX)
+			for(int z < VoxelChunk.SizeZ)
+			{
+				int currentLayer = 0;
+				int currentDepth = 0;
+
+				for(int y = VoxelChunk.SizeY - 1; y > 0; y--)
+				{
+					if(chunk.Data.Data[x][y][z] == Blocks.Air)
+					{
+						currentDepth--;
+						
+						if(currentDepth < 0)
+						{
+							currentDepth = 0;
+
+							currentLayer--;
+
+							if(currentLayer < 0)
+								currentLayer = 0;
+						}
+					}
+					else
+					{
+						chunk.Data.Data[x][y][z] = layers[currentLayer].BlockType;
+
+						currentDepth++;
+
+						if(currentDepth >= layers[currentLayer].Depth)
+						{
+							if(currentLayer >= layers.Count - 1)
+							{
+								currentLayer = layers.Count - 1;
+							}
+							else
+							{
+								currentDepth = 0;
+								currentLayer++;
+							}
+						}
+					}
+				}
+			}
+		}
+
+		void GenTestChunk(Chunk chunk)
+		{
+			GenerateTerrain(chunk);
+			GroundLayers(chunk);
+		}
+
+		void GenChunkGeo(Chunk chunk)
+		{
+			var oldGeometry = chunk.Geometry;
+
+			var newGeometry = voxelGeoGen.GenerateGeometry(chunk);
+
+			Interlocked.Store(ref chunk.Geometry, newGeometry);
+			chunk.IsGeometryDirty = false;
+
+			oldGeometry?.ReleaseRef();
+		}
+
+		public void Draw()
+		{
+			chunkListLock.Enter();
+			for(let pair in _chunks)
+			{
+				Chunk chunk = pair.value;
+
+				GeometryBinding chunkGeo = Interlocked.Load(ref chunk.Geometry);
+				
+				if(chunkGeo == null)
+					continue;
+
+				chunkGeo.AddRef();
+
+				BlockTextures.Atlas.Bind();
+
+				Renderer.Submit(chunk.Geometry, TextureEffect, chunk.Transform);
+				chunkGeo.ReleaseRef();
+			}
+			chunkListLock.Exit();
+		}
+		
+		public void OnImGuiRender()
+		{
+			ImGui.Begin("Voxel Manager");
+
+			int32 oldVd = (.)_viewDistance;
+
+			ImGui.DragInt("View distance", (.)&_viewDistance, 1.0f, 1, 1000);
+
+			if(oldVd != _viewDistance)
+				chunkPosChanged.Exit();
+
+			ImGui.End();
+		}
+	}
+}

Sandbox/src/VoxelFun/Models.bf

@@ -0,0 +1,27 @@
+using System;
+using System.Collections;
+
+namespace Sandbox.VoxelFun
+{
+	static class Models
+	{
+		static List<Model> _models = new List<Model>() ~ DeleteContainerAndItems!(_);
+
+		public static Model Stone;
+		public static Model Grass;
+		public static Model Dirt;
+
+		public static void Init()
+		{
+			Stone = RegisterModel(Blocks.Stone, .. new BlockModel(.White, BlockTextures.Stone));
+			Grass = RegisterModel(Blocks.Grass, .. new BlockModel(.White, BlockTextures.GrassTop, BlockTextures.GrassSide, BlockTextures.Dirt));
+			Dirt = RegisterModel(Blocks.Dirt, .. new BlockModel(.White, BlockTextures.Dirt));
+		}
+
+		public static void RegisterModel(Block block, Model model)
+		{
+			_models.Add(model);
+			block.[Friend]_model = model;
+		}
+	}
+}

Sandbox/src/VoxelFun/TextureAtlas.bf

@@ -0,0 +1,116 @@
+using System;
+using System.Collections;
+using GlitchyEngine;
+using GlitchyEngine.Math;
+using GlitchyEngine.Renderer;
+
+namespace Sandbox.VoxelFun
+{
+	class TextureAtlas : Texture2D
+	{
+		typealias TexEntry = (Color* data, uint32 width, uint32 height, BlockTexture blockTex);
+
+		public this(GraphicsContext context, List<BlockTexture> textures) : base(context)
+		{
+			// Todo: rewrite this garbage algorithm
+
+			List<TexEntry> textureDatas = new .(textures.Count);
+			defer
+			{
+				for(let item in textureDatas)
+				{
+					LodePng.LodePng.Free(item.data);
+				}
+
+				delete textureDatas;
+			}
+
+			uint32 maxWidth = 0;
+			uint32 maxHeight = 0;
+
+			Color[4] nullColors = .(.HotPink, .Black, .Black, .HotPink);
+			BlockTexture nullBT = scope .("NULL");
+			TexEntry nullTexture = (&nullColors, 2, 2, nullBT);
+			bool nullTexWriten = false;
+
+			for(let texture in textures)
+			{
+				(Color* data, uint32 width, uint32 height, BlockTexture blockTex) tex;
+				tex.blockTex = texture;
+
+				let error = LodePng.LodePng.Decode32File(out tex.data, out tex.width, out tex.height, texture.FileName);
+
+				if(error != 0)
+					Log.ClientLogger.Error($"Failed to load texture \"{texture.FileName}\". ({error}) \"{StringView(LodePng.LodePng.ErrorText(error))}\"");
+
+				if(tex.width > maxWidth)
+					maxWidth = tex.width;
+
+				if(tex.height > maxHeight)
+					maxHeight = tex.height;
+
+				textureDatas.Add(tex);
+			}
+
+			uint32 texturesX = (.)System.Math.Ceiling(System.Math.Sqrt(textureDatas.Count));
+			uint32 texturesY = (.)System.Math.Ceiling((float)textureDatas.Count / (float)texturesX);
+
+			uint32 textureWidth = texturesX * maxWidth;
+			uint32 textureHeight = texturesY * maxHeight;
+
+			Color[] atlasColors = new DirectX.Color[textureWidth * textureHeight];
+			defer delete atlasColors;
+
+			uint32 currentX = 0;
+			uint32 currentY = 0;
+
+			/// Copies the data of the given texture into the atlas
+			void CopyTextureIntoAtlas(TexEntry texture)
+			{
+				texture.blockTex.[Friend]_atlasStart = .((float)currentX / (float)textureWidth, (float)currentY / (float)textureHeight);
+				texture.blockTex.[Friend]_atlasSize = .((float)texture.width / (float)textureWidth, (float)texture.height / (float)textureHeight);
+
+				for(uint32 penY = currentY, uint32 y = 0; y < texture.height; penY++, y++)
+				for(uint32 penX = currentX, uint32 x = 0; x < texture.width; penX++, x++)
+				{
+					atlasColors[penX + penY * textureWidth] = texture.data[x + y * texture.width];
+				}
+
+				currentX += maxWidth;
+				if(currentX >= textureWidth)
+				{
+					currentX = 0;
+					currentY += maxHeight;
+				}
+			}
+
+			for(let texture in textureDatas)
+			{
+				if(texture.data != null)
+				{
+					CopyTextureIntoAtlas(texture);
+				}
+				else
+				{
+					if(!nullTexWriten)
+					{
+						CopyTextureIntoAtlas(nullTexture);
+						nullTexWriten = true;
+					}
+					
+					texture.blockTex.[Friend]_atlasStart = nullTexture.blockTex.[Friend]_atlasStart;
+					texture.blockTex.[Friend]_atlasSize = nullTexture.blockTex.[Friend]_atlasSize;
+				}
+			}
+
+			Texture2DDesc desc;
+			desc.Width = textureWidth;
+			desc.Height = textureHeight;
+			desc.ArraySize = 1;
+			desc.MipLevels = 1;
+			desc.Format = .R8G8B8A8_UNorm;
+
+			CreateTexturePlatform(desc, atlasColors.CArray(), textureWidth * sizeof(Color));
+		}
+	}
+}

Sandbox/src/VoxelFun/VoxelChunk.bf

@@ -0,0 +1,16 @@
+using GlitchyEngine.Math;
+
+namespace Sandbox.VoxelFun
+{
+	public struct VoxelChunk
+	{
+		public const int SizeX = 16;
+		public const int SizeY = 256;
+		public const int SizeZ = 16;
+
+		public const Int32_3 Size = .(SizeX, SizeY, SizeZ);
+		public const Vector3 VectorSize = .(SizeX, SizeY, SizeZ);
+
+		public Block[SizeX][SizeY][SizeZ] Data;
+	}
+}

Sandbox/src/VoxelFun/VoxelGeometryGenerator.bf

@@ -0,0 +1,231 @@
+using System.Collections;
+using GlitchyEngine.Renderer;
+using GlitchyEngine.Math;
+using System;
+using System.Diagnostics;
+using static Sandbox.VoxelFun.VoxelTestLayer;
+namespace Sandbox.VoxelFun
+{
+	enum BlockFace
+	{
+		case None = 0;
+		case Front = 1;
+		case Back = 2;
+		case Left = 4;
+		case Right = 8;
+		case Top = 16;
+		case Bottom = 32;
+		case All = Bottom | Top | Right | Left | Back | Front;
+
+		public BlockFace Opposite
+		{
+			get
+			{
+				switch(this)
+				{
+				case Front:
+					return Back;
+				case Back:
+					return Front;
+				case Left:
+					return Right;
+				case Right:
+					return Left;
+				case Top:
+					return Bottom;
+				case Bottom:
+					return Top;
+				default:
+					return None;
+				}
+			}
+		}
+	}
+
+	class VoxelGeometryGenerator
+	{
+		public GraphicsContext Context;
+		public VertexLayout Layout;
+
+		BlockFace GetVisibleFaces(VoxelChunk chunk, int x, int y, int z, Chunk[3][3] chunks)
+		{
+			BlockFace visibleFaces = .None;
+
+			// Back
+			int idx = z;
+			Chunk readChunk = chunks[1][1];
+
+			if(idx == 0)
+			{
+				readChunk = chunks[1][0];
+				idx = VoxelChunk.Size.Z;
+			}
+
+			if(readChunk == null || readChunk.Data.Data[x][y][idx - 1].VisibleNeighbors.HasFlag(.Front))
+				visibleFaces |= .Back;
+			
+			// Front
+			idx = z + 1;
+			readChunk = chunks[1][1];
+
+			if(idx == VoxelChunk.Size.Z)
+			{
+				readChunk = chunks[1][2];
+				idx = 0;
+			}
+
+			if(readChunk == null || readChunk.Data.Data[x][y][idx].VisibleNeighbors.HasFlag(.Back))
+				visibleFaces |= .Front;
+			
+			// Left
+			idx = x;
+			readChunk = chunks[1][1];
+
+			if(idx == 0)
+			{
+				readChunk = chunks[0][1];
+				idx = VoxelChunk.Size.X;
+			}
+
+			if(readChunk == null || readChunk.Data.Data[idx - 1][y][z].VisibleNeighbors.HasFlag(.Right))
+				visibleFaces |= .Left;
+			
+			// Right
+			idx = x + 1;
+			readChunk = chunks[1][1];
+
+			if(idx == VoxelChunk.Size.X)
+			{
+				readChunk = chunks[2][1];
+				idx = 0;
+			}
+
+			if(readChunk == null || readChunk.Data.Data[idx][y][z].VisibleNeighbors.HasFlag(.Left))
+				visibleFaces |= .Right;
+			
+			// TODO: implement for top and bottom as we have 3D chunks
+			if(y == 0 || chunk.Data[x][y - 1][z].VisibleNeighbors.HasFlag(.Top))
+				visibleFaces |= .Bottom;
+			if(y == VoxelChunk.SizeY - 1 || chunk.Data[x][y + 1][z].VisibleNeighbors.HasFlag(.Bottom))
+				visibleFaces |= .Top;
+
+			/*
+			if(x == 0 || chunk.Data[x - 1][y][z].VisibleNeighbors.HasFlag(.Right))
+				visibleFaces |= .Left;
+			if(x == VoxelChunk.SizeX - 1 || chunk.Data[x + 1][y][z].VisibleNeighbors.HasFlag(.Left))
+				visibleFaces |= .Right;
+
+			if(y == 0 || chunk.Data[x][y - 1][z].VisibleNeighbors.HasFlag(.Top))
+				visibleFaces |= .Bottom;
+			if(y == VoxelChunk.SizeY - 1 || chunk.Data[x][y + 1][z].VisibleNeighbors.HasFlag(.Bottom))
+				visibleFaces |= .Top;
+			*/
+			return visibleFaces;
+		}
+
+		public GeometryBinding GenerateGeometry(Chunk chunk)
+		{
+			List<VertexColorTexture> vertices = scope List<VertexColorTexture>();
+			List<uint32> indices = scope List<uint32>();
+			uint32 lastIndex = 0;
+
+			Stopwatch sw = .StartNew();
+
+			var chunkData = chunk.Data.Data;
+
+			Chunk[3][3] chunks;
+
+			var coord = chunk.Coordinate;
+
+			// left
+			coord.X -= 1;
+			chunks[0][1] = chunk.ChunkManager.GetChunk(coord);
+			if(chunks[0][1] == null)
+			{
+				// TODO: register reload when neighbor generated
+				chunk._reqiredNeighbors |= .Left;
+			}
+
+			// back
+			coord.X += 1;
+			coord.Z -= 1;
+			chunks[1][0] = chunk.ChunkManager.GetChunk(coord);
+			if(chunks[1][0] == null)
+			{
+				// TODO: register reload when neighbor generated
+				chunk._reqiredNeighbors |= .Back;
+			}
+
+			// center
+			chunks[1][1] = chunk;
+			
+			// front
+			coord.Z += 2;
+			chunks[1][2] = chunk.ChunkManager.GetChunk(coord);
+			if(chunks[1][2] == null)
+			{
+				// TODO: register reload when neighbor generated
+				chunk._reqiredNeighbors |= .Front;
+			}
+
+			// right
+			coord.X += 1;
+			coord.Z -= 1;
+			chunks[2][1] = chunk.ChunkManager.GetChunk(coord);
+			if(chunks[2][1] == null)
+			{
+				// TODO: register reload when neighbor generated
+				chunk._reqiredNeighbors |= .Right;
+			}
+
+			for(int x < VoxelChunk.SizeX)
+		   	for(int y < VoxelChunk.SizeY)
+		   	for(int z < VoxelChunk.SizeZ)
+			{
+				Block block = chunkData[x][y][z];
+
+				Vector3 blockPos = .(x, y, z);
+
+				if(block != Blocks.Air)
+				{
+					BlockFace visibleFaces = GetVisibleFaces(chunk.Data, x, y, z, chunks);
+
+					if(visibleFaces != .None)
+						block.Model.GenerateGeometry(block, blockPos, visibleFaces, vertices, indices, ref lastIndex);
+				}
+			}
+
+			GeometryBinding gb;
+
+			if(indices.Count > 0)
+			{
+				VertexBuffer vb = new VertexBuffer(Context, typeof(VertexColorTexture), (.)vertices.Count, .Default, .None);
+				vb.SetData<VertexColorTexture>(vertices);
+
+				IndexBuffer ib = new IndexBuffer(Context, (.)indices.Count, .Default, .None, .Index32Bit);
+				ib.SetData<uint32>(indices);
+
+				gb = new GeometryBinding(Context);
+				gb.SetVertexBufferSlot(vb, 0);
+				gb.SetIndexBuffer(ib);
+				gb.SetPrimitiveTopology(.TriangleList);
+				gb.SetVertexLayout(Layout);
+
+				vb.ReleaseRef();
+				ib.ReleaseRef();
+			}
+			else
+			{
+				gb = null;
+			}
+
+			sw.Stop();
+
+			Debug.WriteLine($"Geometry Generation: {sw.ElapsedMilliseconds}");
+
+			delete sw;
+
+			return gb;
+		}
+	}
+}

Sandbox/src/VoxelFun/VoxelTestLayer.bf

@@ -0,0 +1,499 @@
+using System;
+using GlitchyEngine;
+using GlitchyEngine.Math;
+using GlitchyEngine.Renderer;
+using ImGui;
+using GlitchyEngine.ImGui;
+using GlitchyEngine.Events;
+using System.Diagnostics;
+using System.Collections;
+
+namespace Sandbox.VoxelFun
+{
+	public class VoxelTestLayer : Layer
+	{
+		private PerspectiveCamera _camera ~ delete _;
+
+		[Ordered]
+		public struct VertexColorTexture : IVertexData
+		{
+			public Vector3 Position;
+			public Color Color;
+			public Vector2 TexCoord;
+
+			public this() => this = default;
+
+			public this(Vector3 pos, Color color)
+			{
+				Position = pos;
+				Color = color;
+				TexCoord = .();
+			}
+			
+			public this(Vector3 pos, Color color, Vector2 texCoord)
+			{
+				Position = pos;
+				Color = color;
+				TexCoord = texCoord;
+			}
+
+			public static readonly VertexElement[] VertexElements ~ delete _;
+
+			public static VertexElement[] IVertexData.VertexElements => VertexElements;
+
+			static this()
+			{
+				VertexElements = new VertexElement[](
+					VertexElement(.R32G32B32_Float, "POSITION"),
+					VertexElement(.R8G8B8A8_UNorm,  "COLOR"),
+					VertexElement(.R32G32_Float,  "TEXCOORD"),
+					);
+			}
+		}
+
+		VertexLayout _vertexLayout ~ delete _;
+
+		GeometryBinding _cubeGeo ~ _?.ReleaseRef();
+
+		GeometryBinding _geometryBinding ~ _?.ReleaseRef();
+
+		GeometryBinding _quadGeometryBinding ~ _?.ReleaseRef();
+
+		GeometryBinding _lineGeometryBinding ~ _?.ReleaseRef();
+
+		RasterizerState _rasterizerState ~ _?.ReleaseRef();
+		EffectLibrary _effectLibrary ~ delete _;
+
+		Effect _effect ~ _?.ReleaseRef();
+		Effect _textureEffect ~ _?.ReleaseRef();
+
+		GraphicsContext _context ~ _?.ReleaseRef();
+
+		Texture2D _texture ~ _?.ReleaseRef();
+		Texture2D _ge_logo ~ _?.ReleaseRef();
+
+		BlendState _alphaBlendState ~ _?.ReleaseRef();
+		BlendState _opaqueBlendState ~ _?.ReleaseRef();
+
+		DepthStencilTarget _depthStencilTarget ~ _?.ReleaseRef();
+
+		World _world ~ delete _;
+
+		private Vector3 CircleCoord(float angle)
+		{
+			return .(Math.Cos(angle), Math.Sin(angle), 0);
+		}
+
+		[AllowAppend]
+		public this() : base("VoxelTest")
+		{
+			Blocks.Init();
+
+			_context = Application.Get().Window.Context..AddRef();
+			
+			BlockTextures.Init(_context);
+			Models.Init();
+
+			_effectLibrary = new EffectLibrary(_context);
+
+			_depthStencilTarget = new DepthStencilTarget(_context, _context.SwapChain.Width, _context.SwapChain.Height);
+
+			_effect = _effectLibrary.Load("content\\Shaders\\basicShader.hlsl");
+			
+			_textureEffect = _effectLibrary.Load("content\\Shaders\\textureShader.hlsl");
+
+			// Create Input Layout
+
+			_vertexLayout = new VertexLayout(_context, VertexColorTexture.VertexElements, _textureEffect.VertexShader);
+			// Create hexagon
+			{
+				_geometryBinding = new GeometryBinding(_context);
+				_geometryBinding.SetPrimitiveTopology(.TriangleList);
+				_geometryBinding.SetVertexLayout(_vertexLayout);
+
+				float pO3 = Math.PI_f / 3.0f;
+				VertexColorTexture[?] vertices = .(
+					VertexColorTexture(.Zero, Color(255,255,255)),
+					VertexColorTexture(CircleCoord(0), Color(255,  0,  0)),
+					VertexColorTexture(CircleCoord(pO3), Color(255,255,  0)),
+					VertexColorTexture(CircleCoord(pO3*2), Color(  0,255,  0)),
+					VertexColorTexture(CircleCoord(Math.PI_f), Color(  0,255,255)),
+					VertexColorTexture(CircleCoord(-pO3*2), Color(  0,  0,255)),
+					VertexColorTexture(CircleCoord(-pO3), Color(255,  0,255)),
+				);
+
+				let vb = new VertexBuffer(_context, typeof(VertexColorTexture), (.)vertices.Count, .Immutable);
+				vb.SetData(vertices);
+				_geometryBinding.SetVertexBufferSlot(vb, 0);
+				vb.ReleaseRef();
+
+				uint16[?] indices = .(
+					0, 1, 2,
+					0, 2, 3,
+					0, 3, 4,
+					0, 4, 5,
+					0, 5, 6,
+					0, 6, 1);
+
+				let ib = new IndexBuffer(_context, (.)indices.Count, .Immutable);
+				ib.SetData(indices);
+				_geometryBinding.SetIndexBuffer(ib);
+				ib.ReleaseRef();
+			}
+
+			// Create Quad
+			{
+				_quadGeometryBinding = new GeometryBinding(_context);
+				_quadGeometryBinding.SetPrimitiveTopology(.TriangleList);
+				_quadGeometryBinding.SetVertexLayout(_vertexLayout);
+
+				VertexColorTexture[?] vertices = .(
+					VertexColorTexture(Vector3(-0.75f, 0.75f, 0), Color.White, .(0, 0)),
+					VertexColorTexture(Vector3(-0.75f, -0.75f, 0), Color.White, .(0, 1)),
+					VertexColorTexture(Vector3(0.75f, -0.75f, 0), Color.White, .(1, 1)),
+					VertexColorTexture(Vector3(0.75f, 0.75f, 0), Color.White, .(1, 0)),
+				);
+
+				let qvb = new VertexBuffer(_context, typeof(VertexColorTexture), (.)vertices.Count, .Immutable);
+				qvb.SetData(vertices);
+				_quadGeometryBinding.SetVertexBufferSlot(qvb, 0);
+				qvb.ReleaseRef();
+
+				uint16[?] indices = .(
+					0, 1, 2,
+					2, 3, 0);
+
+				let qib = new IndexBuffer(_context, (.)indices.Count, .Immutable);
+				qib.SetData(indices);
+				_quadGeometryBinding.SetIndexBuffer(qib);
+				qib.ReleaseRef();
+			}
+
+			// Create Cube
+			{
+				_cubeGeo = new GeometryBinding(_context);
+				_cubeGeo.SetPrimitiveTopology(.TriangleList);
+				_cubeGeo.SetVertexLayout(_vertexLayout);
+
+				List<VertexColorTexture> vertices = new List<VertexColorTexture>();
+				defer delete vertices;
+				List<uint32> indices = new List<uint32>();
+				defer delete indices;
+
+				uint32 i = 0;
+
+				(scope BlockModel(.HotPink)).GenerateGeometry(Blocks.Air, .Zero, .All, vertices, indices, ref i);
+
+				let qvb = new VertexBuffer(_context, typeof(VertexColorTexture), (.)vertices.Count, .Immutable);
+				qvb.SetData<VertexColorTexture>(vertices);
+				_cubeGeo.SetVertexBufferSlot(qvb, 0);
+				qvb.ReleaseRef();
+
+				let qib = new IndexBuffer(_context, (.)indices.Count, .Immutable, .None, .Index32Bit);
+				qib.SetData<uint32>(indices);
+				_cubeGeo.SetIndexBuffer(qib);
+				qib.ReleaseRef();
+			}
+			
+			// Create Line
+			{
+				_lineGeometryBinding = new GeometryBinding(_context);
+				_lineGeometryBinding.SetPrimitiveTopology(.LineList);
+				_lineGeometryBinding.SetVertexLayout(_vertexLayout);
+
+				VertexColorTexture[?] vertices = .(
+					VertexColorTexture(Vector3(0, 0, 0), Color.White, .(0, 0)),
+					VertexColorTexture(Vector3(0, 0, 10), Color.White, .(0, 1)),
+				);
+
+				let qvb = new VertexBuffer(_context, typeof(VertexColorTexture), (.)vertices.Count, .Immutable);
+				qvb.SetData(vertices);
+				_lineGeometryBinding.SetVertexBufferSlot(qvb, 0);
+				qvb.ReleaseRef();
+
+				uint16[?] indices = .(0, 1);
+
+				let qib = new IndexBuffer(_context, (.)indices.Count, .Immutable);
+				qib.SetData(indices);
+				_lineGeometryBinding.SetIndexBuffer(qib);
+				qib.ReleaseRef();
+			}
+
+			// Create rasterizer state
+			GlitchyEngine.Renderer.RasterizerStateDescription rsDesc = .(.Solid, .Back, true);
+			rsDesc.DepthClipEnabled = true;
+			_rasterizerState = new RasterizerState(_context, rsDesc);
+
+			// Camera
+			_camera = new PerspectiveCamera();
+			_camera.NearPlane = 0.1f;
+			_camera.FarPlane = 1000.0f;
+			_camera.FovY = Math.PI_f / 4;
+			_camera.Position = .(0, 128, 0);//-320
+
+			_texture = new Texture2D(_context, "content/Textures/Checkerboard.dds");
+			_ge_logo = new Texture2D(_context, "content/Textures/GE_Logo.dds");
+
+			let sampler = SamplerStateManager.GetSampler(
+				SamplerStateDescription()
+				{
+					MagFilter = .Point
+				});
+			
+			_texture.SamplerState = sampler;
+			_ge_logo.SamplerState = sampler;
+
+			sampler.ReleaseRef();
+
+			BlendStateDescription blendDesc = .();
+			blendDesc.RenderTarget[0] = .(true, .SourceAlpha, .InvertedSourceAlpha, .Add, .SourceAlpha, .InvertedSourceAlpha, .Add, .All);
+			_alphaBlendState = new BlendState(_context, blendDesc);
+			_opaqueBlendState = new BlendState(_context, .Default);
+
+			_world = new World();
+			if(World.CreateWorld("test", 1337, _world) case .Err(.WorldAlreadyExists))
+			{
+				World.LoadWorld("test", _world);
+			}
+
+			_world.ChunkManager = new ChunkManager(_context, _vertexLayout, _world);
+			_world.ChunkManager.TextureEffect = _textureEffect..AddRef();
+		}
+
+		void UpdateCamera(GameTime gameTime)
+		{
+			UpdateCameraRotation(gameTime);
+			UpdateCameraMovement(gameTime);
+
+			//_camera.Width = _context.SwapChain.BackbufferViewport.Width / 256;
+			//_camera.Height = _context.SwapChain.BackbufferViewport.Height / 256;
+
+			_camera.AspectRatio = Application.Get().Window.Context.SwapChain.BackbufferViewport.Width /
+									Application.Get().Window.Context.SwapChain.BackbufferViewport.Height;
+
+			_camera.Update();
+		}
+
+		double cameraRotationSpeedX = 0.0001f;
+		double cameraRotationSpeedY = 0.0001f;
+
+		bool b = true;
+
+		void UpdateCameraRotation(GameTime gameTime)
+		{
+			if(b)
+			{
+				b = false;
+				return;
+			}
+
+			let mouseMovement = Input.GetRawMouseMovement();
+
+			if(mouseMovement.X == 0 && mouseMovement.Y == 0)
+				return;
+
+			Vector3 rotation = _camera.Rotation;
+
+			rotation.Y = (float)(rotation.Y + mouseMovement.X * cameraRotationSpeedX * gameTime.FrameTime.TotalMilliseconds);
+			rotation.X = (float)(rotation.X + mouseMovement.Y * cameraRotationSpeedY * gameTime.FrameTime.TotalMilliseconds);
+
+			rotation.X = Math.Clamp(rotation.X, -Math.PI_f / 2, Math.PI_f / 2);
+
+			_camera.Rotation = rotation;
+		}
+
+		float movementSpeed = 2;
+		float movementSpeedFast = 20;
+
+		void UpdateCameraMovement(GameTime gameTime)
+		{
+			Vector3 movement = .();
+
+			if(Input.IsKeyPressed(Key.W))
+			{
+				movement.Z += 1;
+			}
+			if(Input.IsKeyPressed(Key.S))
+			{
+				movement.Z -= 1;
+			}
+
+			if(Input.IsKeyPressed(Key.A))
+			{
+				movement.X -= 1;
+			}
+			if(Input.IsKeyPressed(Key.D))
+			{
+				movement.X += 1;
+			}
+			
+			if(Input.IsKeyPressed(Key.Space))
+			{
+				movement.Y += 1;
+			}
+			if(Input.IsKeyPressed(Key.Control))
+			{
+				movement.Y -= 1;
+			}
+
+			if(movement != .Zero)
+				movement.Normalize();
+
+			movement *= (float)(gameTime.FrameTime.TotalSeconds);
+
+			Matrix rot = .RotationY(_camera.Rotation.Y) * .RotationX(_camera.Rotation.X);
+
+			let bla = ((Vector4)(rot * Vector4(movement, 1.0f))); //TODO .XYZ
+			movement = .(bla.X, bla.Y, bla.Z);
+			
+			float speed = Input.IsKeyPressed(Key.Shift) ? movementSpeedFast : movementSpeed;
+
+			_camera.Position += movement * speed;
+		}
+
+		Ray ray = .(.(0, 128, 0), .UnitZ);
+
+		public override void Update(GameTime gameTime)
+		{
+			UpdateCamera(gameTime);
+
+			_world.ChunkManager.Update(_camera.Position);
+
+			//RenderCommand.Clear(null, .(0.2f, 0.2f, 0.2f));
+			RenderCommand.Clear(null, .CornflowerBlue);
+			RenderCommand.Clear(_depthStencilTarget, 1.0f, 0, .Depth);
+
+			// Draw test geometry
+			_depthStencilTarget.Bind();
+			_context.SetRenderTarget(null);
+			_context.BindRenderTargets();
+
+			_context.SetRasterizerState(_rasterizerState);
+
+			_context.SetViewport(_context.SwapChain.BackbufferViewport);
+
+			Renderer.BeginScene(_camera);
+			
+			_opaqueBlendState.Bind();
+
+			for(int x < 20)
+			for(int y < 20)
+			{
+				if((x + y) % 2 == 0)
+					_effect.Variables["BaseColor"].SetData(_squareColor0);
+				else
+					_effect.Variables["BaseColor"].SetData(_squareColor1);
+
+				Matrix transform = Matrix.Translation(x * 0.2f, y * 0.2f, 0) * Matrix.Scaling(0.1f);
+				Renderer.Submit(_quadGeometryBinding, _effect, transform);
+			}
+			
+			//_effect.Variables["BaseColor"].SetData(_squareColor1);
+			
+			_texture.Bind();
+			Renderer.Submit(_quadGeometryBinding, _textureEffect, .Scaling(1.5f));
+			
+			_alphaBlendState.Bind();
+
+			_ge_logo.Bind();
+			Renderer.Submit(_quadGeometryBinding, _textureEffect, .Scaling(1.5f));
+
+			_texture.Bind();
+
+			intersectInfo.Coordinate = _world.RaycastBlock(.(_camera.Position, _camera.Transform.Forward), 10, _cubeGeo, _textureEffect, out intersectInfo.Location, out intersectInfo.Face);
+
+			Renderer.Submit(_cubeGeo, _textureEffect, .Translation((Vector3)intersectInfo.Coordinate));
+			
+			Renderer.Submit(_cubeGeo, _textureEffect, .Translation(intersectInfo.Location) * .Scaling(0.1f) * .Translation(-0.5f.XXX));
+
+			if(intersectInfo.Face != .None)
+			{
+				if(rightHandBlock == null)
+					rightHandBlock = Blocks.Stone;
+
+				if(Input.IsMouseButtonPressing(.LeftButton))
+				{
+					_world.BreakBlock(intersectInfo.Coordinate);
+				}
+				else if(Input.IsMouseButtonPressing(.RightButton))
+				{
+					_world.PlaceBlock(intersectInfo.Coordinate, rightHandBlock, intersectInfo.Face);
+				}
+				else if(Input.IsMouseButtonPressing(.MiddleButton))
+				{
+					rightHandBlock = _world.GetBlock(intersectInfo.Coordinate);
+				}
+			}
+
+			_world.ChunkManager.Draw();
+
+			Renderer.EndScene();
+		}
+
+		Block rightHandBlock;
+
+		struct IntersectionInfo
+		{
+			public Int32_3 Coordinate;
+			public Vector3 Location;
+			public BlockFace Face;
+		}
+
+		IntersectionInfo intersectInfo;
+
+		ColorRGBA _squareColor0 = ColorRGBA.CornflowerBlue;
+		ColorRGBA _squareColor1;
+
+		public override void OnEvent(Event event)
+		{
+			EventDispatcher dispatcher = scope EventDispatcher(event);
+
+			dispatcher.Dispatch<ImGuiRenderEvent>(scope (e) => OnImGuiRender(e));
+			dispatcher.Dispatch<WindowResizeEvent>(scope (e) => OnWindowResize(e));
+		}
+
+		private bool OnWindowResize(WindowResizeEvent e)
+		{
+			_depthStencilTarget?.ReleaseRef();
+			
+			_depthStencilTarget = new DepthStencilTarget(_context, _context.SwapChain.Width, _context.SwapChain.Height);
+
+			return false;
+		}
+
+		private bool OnImGuiRender(ImGuiRenderEvent e)
+		{
+			_world.ChunkManager.OnImGuiRender();
+
+			ImGui.Begin("Test");
+
+			ImGui.LabelText("Looked at block", $"Coord: {intersectInfo.Coordinate}, Block Face: {intersectInfo.Face}, Location: {intersectInfo.Location}");
+
+			ImGui.DragFloat("Slow Speed", &movementSpeed, 1.0f, 0.01f, 100.0f);
+			ImGui.DragFloat("Fast Speed", &movementSpeedFast, 1.0f, 1f, 10000.0f);
+
+			Vector3 fwd = _camera.Transform.Forward;
+
+			ImGui.DragFloat3("Forward", *(float[3]*)(void*)&fwd, 1.0f, float.NegativeInfinity, float.PositiveInfinity);
+
+			Vector3 camPos = _camera.Position;
+
+			ImGui.DragFloat3("Position", *(float[3]*)(void*)&camPos, 1.0f, float.NegativeInfinity, float.PositiveInfinity);
+
+			_camera.Position = camPos;
+
+			ImGui.ColorEdit3("Square Color", ref _squareColor0);
+
+			_squareColor1 = ColorRGBA.White - _squareColor0;
+
+			_camera.Position = camPos;
+
+
+
+
+			ImGui.End();
+
+			return false;
+		}
+	}
+}

Sandbox/src/VoxelFun/World.bf

@@ -0,0 +1,471 @@
+using System;
+using System.IO;
+using System.Collections;
+using GlitchyEngine.Math;
+using GlitchyEngine;
+using GlitchyEngine.Renderer;
+
+namespace Sandbox.VoxelFun
+{
+	public class World
+	{
+		public enum CreateError
+		{
+			case WorldAlreadyExists;
+			case CreateDirectoryError(Platform.BfpFileResult error);
+		}
+
+		public enum LoadError
+		{
+			case WorldDoesNotExist;
+			case DirectoryError(Platform.BfpFileResult error);
+		}
+
+		private int64 _seed;
+		private String _name ~ delete _;
+		private String _directory ~ delete _;
+
+		private ChunkManager _chunkManager ~ delete _;
+
+		public int64 Seed => _seed;
+		public String Name => _name;
+		public String Directory => _directory;
+
+		public ChunkManager ChunkManager
+		{
+			get => _chunkManager;
+			set => _chunkManager = value;
+		}
+
+		const String WorldsDirectory = "worlds";
+		const String WorldFileName = "world.info";
+
+		public static Result<void, CreateError> CreateWorld(String name, int64 seed, World outWorld)
+		{
+			String worldPath = new String();
+			Path.InternalCombine(worldPath, WorldsDirectory, name);
+
+			if(Directory.Exists(worldPath))
+			{
+				delete worldPath;
+				return .Err(.WorldAlreadyExists);
+			}
+
+			if(Directory.CreateDirectory(worldPath) case .Err(let error))
+			{
+				delete worldPath;
+				return .Err(.CreateDirectoryError(error));
+			}
+
+			String worldFilePath = Path.InternalCombine(.. scope .(), worldPath, WorldFileName);
+
+			MemoryStream str = scope MemoryStream();
+			str.Write(seed);
+
+			Span<uint8> data = .(str.[Friend]mMemory.Ptr, str.Length);
+
+			File.WriteAll(worldFilePath, data);
+
+			outWorld._name = new String(name);
+			outWorld._directory = worldPath;
+			outWorld._seed = seed;
+
+			return .Ok;
+		}
+
+		public static Result<void, LoadError> LoadWorld(String name, World outWorld)
+		{
+			String worldPath = new String();
+			Path.InternalCombine(worldPath, WorldsDirectory, name);
+
+			if(!Directory.Exists(worldPath))
+				return .Err(.WorldDoesNotExist);
+
+			String worldFilePath = Path.InternalCombine(.. scope .(), worldPath, WorldFileName);
+
+			List<uint8> data = scope .();
+
+			File.ReadAll(worldFilePath, data);
+
+			int64 seed = *(int64*)data.Ptr;
+
+			outWorld._name = new String(name);
+			outWorld._directory = worldPath;
+			outWorld._seed = seed;
+
+			return .Ok;
+		}
+
+		/*
+		public Int32_3 GetChunkCoordinate(Vector3 blockPosition)
+		{
+			Vector3 v = blockPosition / (Vector3)VoxelChunk.Size;
+
+			Int32_3 p = .();
+			p.X = (int)Math.Round(v.X);
+			p.Y = (int)Math.Round(v.Y);
+			p.Z = (int)Math.Round(v.Z);
+
+			p.Y = 0;
+
+			return p;
+		}
+		*/
+
+		/**
+		 * Returs the coordinate of the chunk that contains the given coordinate.
+		 */
+		public static Vector3 GetChunkCoordinate(Vector3 blockCoordinate)
+		{
+			Vector3 chunkPosition = blockCoordinate / VoxelChunk.VectorSize;
+
+			return Vector3.Floor(chunkPosition);
+		}
+
+		/**
+		 * Calculates the coordinate of the chunk that contains the given block coordinate.
+		 */
+		public static Int32_3 ChunkCoordFromBlockCoord(Int32_3 blockCoordinate)
+		{
+			Int32_3 coordinate = blockCoordinate;
+
+			if(coordinate.X < 0)
+				coordinate.X -= VoxelChunk.Size.X - 1;
+
+			if(coordinate.Y < 0)
+				coordinate.Y -= VoxelChunk.Size.Y - 1;
+			
+			if(coordinate.Z < 0)
+				coordinate.Z -= VoxelChunk.Size.Z - 1;
+
+			return coordinate / VoxelChunk.Size;
+		}
+		
+		/**
+		 * Calculates the block coordinate relative to its chunk.
+		 * For Example: Consider the block at the global location of (25, 17, -12)
+		 * The coordinate of this block inside its chunk would be (9, 17, 4) because the chunk starts at (16, 0, -16)
+		 */
+		public static Int32_3 BlockCoordInChunk(Int32_3 blockCoordinate)
+		{
+			Int32_3 chunkPosition = blockCoordinate % VoxelChunk.Size;
+
+			if(chunkPosition.X < 0)
+				chunkPosition.X += VoxelChunk.Size.X;
+
+			if(chunkPosition.Y < 0)
+				chunkPosition.Y += VoxelChunk.Size.Y;
+			
+			if(chunkPosition.Z < 0)
+				chunkPosition.Z += VoxelChunk.Size.Z;
+
+			return chunkPosition;
+		}
+
+		/**
+		 * Returs the coordinate of the block relative to the chunk.
+		 */
+		public static Vector3 GetPositionInChunk(Vector3 position)
+		{
+			Vector3 chunkPosition = position % VoxelChunk.VectorSize;
+
+			if(chunkPosition.X < 0)
+				chunkPosition.X += VoxelChunk.VectorSize.X;
+
+			if(chunkPosition.Y < 0)
+				chunkPosition.Y += VoxelChunk.VectorSize.Y;
+			
+			if(chunkPosition.Z < 0)
+				chunkPosition.Z += VoxelChunk.VectorSize.Z;
+
+			return Vector3.Floor(chunkPosition);
+		}
+
+		/*
+		public struct BlockIntersection
+		{
+			Int32_3 BlockCoordinate;
+		}
+		*/
+		public Int32_3 RaycastBlock(Ray ray, float maxDistance, GeometryBinding geo, Effect effect, out Vector3 intersectionPosition, out BlockFace intersectionFace)
+		{
+			Vector3 start = ray.Start;
+			Vector3 dir = ray.Direction.Normalized();
+
+			Vector3 unitStepSize = .((dir / dir.X).Magnitude(), (dir / dir.Y).Magnitude(), (dir / dir.Z).Magnitude());
+
+			Int32_3 walker = (Int32_3)Vector3.Floor(start);
+
+			Vector3 rayLengths = .();
+
+			Int32_3 step;
+
+			BlockFace xFace;
+			BlockFace yFace;
+			BlockFace zFace;
+
+			if(dir.X < 0)
+			{
+				xFace = .Right;
+				step.X = -1;
+				rayLengths.X = (start.X - (float)(walker.X)) * unitStepSize.X;
+			}
+			else
+			{
+				xFace = .Left;
+				step.X = 1;
+				rayLengths.X = ((float)(walker.X + 1) - start.X) * unitStepSize.X;
+			}
+
+			if(dir.Y < 0)
+			{
+				yFace = .Top;
+				step.Y = -1;
+				rayLengths.Y = (start.Y - (float)(walker.Y)) * unitStepSize.Y;
+			}
+			else
+			{
+				yFace = .Bottom;
+				step.Y = 1;
+				rayLengths.Y = ((float)(walker.Y + 1) - start.Y) * unitStepSize.Y;
+			}
+			
+			if(dir.Z < 0)
+			{
+				zFace = .Back;
+				step.Z = -1;
+				rayLengths.Z = (start.Z - (float)(walker.Z)) * unitStepSize.Z;
+			}
+			else
+			{
+				zFace = .Front;
+				step.Z = 1;
+				rayLengths.Z = ((float)(walker.Z + 1) - start.Z) * unitStepSize.Z;
+			}
+
+			float distance = 0.0f;
+			while(distance < maxDistance)
+			{
+				// Walk
+				if(rayLengths.X < rayLengths.Y)
+				{
+					if(rayLengths.X < rayLengths.Z)
+					{
+						walker.X += step.X;
+						distance = rayLengths.X;
+						rayLengths.X += unitStepSize.X;
+
+						intersectionFace = xFace;
+					}
+					else
+					{
+						walker.Z += step.Z;
+						distance = rayLengths.Z;
+						rayLengths.Z += unitStepSize.Z;
+
+						intersectionFace = zFace;
+					}
+				}
+				else
+				{
+					if(rayLengths.Y < rayLengths.Z)
+					{
+						walker.Y += step.Y;
+						distance = rayLengths.Y;
+						rayLengths.Y += unitStepSize.Y;
+
+						intersectionFace = yFace;
+					}
+					else
+					{
+						walker.Z += step.Z;
+						distance = rayLengths.Z;
+						rayLengths.Z += unitStepSize.Z;
+
+						intersectionFace = zFace;
+					}
+				}
+
+				Block blockData = [Inline]GetBlock(walker);
+
+				if(blockData != Blocks.Air)
+				{
+					intersectionPosition = start + distance * dir;
+
+					return walker;
+				}
+			}
+
+			intersectionFace = .None;
+			intersectionPosition = .(float.NaN);
+			return .(int32.MaxValue, int32.MaxValue, int32.MaxValue);
+		}
+
+		/**
+		 * Breaks the block at the given coordinates.
+		 */
+		public void BreakBlock(Int32_3 blockCoordinate)
+		{
+			Int32_3 chunkCoordinate = ChunkCoordFromBlockCoord(blockCoordinate);
+
+			Chunk chunk = _chunkManager.LoadChunk(chunkCoordinate);
+
+			Int32_3 coordInChunk = BlockCoordInChunk(blockCoordinate);
+
+			Block block = chunk.GetBlock(coordInChunk);
+
+			block.OnBreaking(blockCoordinate);
+
+			chunk.SetBlock(coordInChunk, Blocks.Air);
+
+			MarkNeighborGeometryDirty(chunkCoordinate, coordInChunk);
+		}
+
+		/**
+		 * Places a block at the given coordinates.
+		 */
+		public void PlaceBlock(Int32_3 blockCoordinate, Block block)
+		{
+			Int32_3 chunkCoordinate = ChunkCoordFromBlockCoord(blockCoordinate);
+
+			Chunk chunk = _chunkManager.LoadChunk(chunkCoordinate);
+
+			Int32_3 coordInChunk = BlockCoordInChunk(blockCoordinate);
+
+			// Todo: we will also be able to place block in fluids and some other blocks.
+			Log.ClientLogger.AssertDebug(chunk.GetBlock(coordInChunk) == Blocks.Air, "A block can only be placed in air (atm)");
+
+			block.OnPlacing(blockCoordinate);
+
+			chunk.SetBlock(coordInChunk, block);
+
+			MarkNeighborGeometryDirty(chunkCoordinate, coordInChunk);
+		}
+
+		/**
+		 * Places a block on the given face of the block at the specified coordinates.
+		 */
+		public void PlaceBlock(Int32_3 blockCoordinate, Block block, BlockFace face)
+		{
+			var blockCoordinate;
+
+			switch(face)
+			{
+			case .Front:
+				blockCoordinate.Z--;
+			case .Back:
+				blockCoordinate.Z++;
+			case .Left:
+				blockCoordinate.X--;
+			case .Right:
+				blockCoordinate.X++;
+			case .Bottom:
+				blockCoordinate.Y--;
+			case .Top:
+				blockCoordinate.Y++;
+			default:
+				Log.ClientLogger.AssertDebug(false, "Unexpected block face.");
+			}
+
+			PlaceBlock(blockCoordinate, block);
+		}
+
+		/**
+		 * Gets the block at the specified coordinate.
+		 * @remarks If the blocks chunk is not loaded it will be loaded from the disk.
+		 */
+		public void SetBlock(Int32_3 blockCoordinate, Block block)
+		{
+			Int32_3 chunkCoordinate = ChunkCoordFromBlockCoord(blockCoordinate);
+
+			Chunk chunk = _chunkManager.LoadChunk(chunkCoordinate);
+			
+			Int32_3 coordInChunk = BlockCoordInChunk(blockCoordinate);
+
+			chunk.SetBlock(coordInChunk, block);
+
+			MarkNeighborGeometryDirty(chunkCoordinate, coordInChunk);
+		}
+
+		void MarkNeighborGeometryDirty(Int32_3 chunkCoordinate, Int32_3 coordInChunk)
+		{
+			var chunkCoordinate;
+
+			Chunk chunk;
+
+			// if we are on a chunk border mark the neighbor as dirty
+
+			if(coordInChunk.X == 0)
+			{
+				chunkCoordinate.X--;
+				chunk = _chunkManager.GetChunk(chunkCoordinate);
+				chunk?.IsGeometryDirty = true;
+			}
+			else if(coordInChunk.X == VoxelChunk.Size.X - 1)
+			{
+				chunkCoordinate.X++;
+				chunk = _chunkManager.GetChunk(chunkCoordinate);
+				chunk?.IsGeometryDirty = true;
+			}
+			// TODO: implement Y
+			else if(coordInChunk.Z == 0)
+			{
+				chunkCoordinate.Z--;
+				chunk = _chunkManager.GetChunk(chunkCoordinate);
+				chunk?.IsGeometryDirty = true;
+			}
+			else if(coordInChunk.Z == VoxelChunk.Size.Z - 1)
+			{
+				chunkCoordinate.Z++;
+				chunk = _chunkManager.GetChunk(chunkCoordinate);
+				chunk?.IsGeometryDirty = true;
+			}
+		}
+
+		/**
+		 * Gets the block at the specified coordinate.
+		 * @remarks If the blocks chunk is not loaded it will be loaded from the disk.
+		 */
+		public Block GetBlock(Int32_3 blockCoordinate)
+		{
+			Int32_3 chunkCoordinate = ChunkCoordFromBlockCoord(blockCoordinate);
+
+			Chunk chunk = _chunkManager.LoadChunk(chunkCoordinate);
+			
+			Int32_3 coordInChunk = BlockCoordInChunk(blockCoordinate);
+
+			return chunk.GetBlock(coordInChunk);
+		}
+
+		[Test]
+		static void TestWorld()
+		{
+			// ChunkCoordFromBlockCoord
+			{
+				Int32_3 block = .(0, 0, 0);
+				Int32_3 expectedChunk = .(0, 0, 0);
+				Test.Assert(expectedChunk == ChunkCoordFromBlockCoord(block));
+
+				block = .(5, 0, 0);
+				expectedChunk = .(0, 0, 0);
+				Test.Assert(expectedChunk == ChunkCoordFromBlockCoord(block));
+
+				block = .(45, 80, 12);
+				expectedChunk = .(2, 0, 0);
+				Test.Assert(expectedChunk == ChunkCoordFromBlockCoord(block));
+
+				block = .(0, 0, -1);
+				expectedChunk = .(0, 0, -1);
+				Test.Assert(expectedChunk == ChunkCoordFromBlockCoord(block));
+				
+				block = .(0, 0, -16);
+				expectedChunk = .(0, 0, -1);
+				Test.Assert(expectedChunk == ChunkCoordFromBlockCoord(block));
+
+				block = .(0, 0, -17);
+				expectedChunk = .(0, 0, -2);
+				Test.Assert(expectedChunk == ChunkCoordFromBlockCoord(block));
+			}
+		}
+	}
+}