Added window (de-)activate events

GlitchyEngine/src/Application.bf

@@ -53,6 +53,9 @@ namespace GlitchyEngine
 
 		public void OnEvent(Event e)
 		{
+			if(!_running)
+				return;
+
 			EventDispatcher dispatcher = scope .(e);
 			dispatcher.Dispatch<WindowCloseEvent>(scope => OnWindowClose);
 

GlitchyEngine/src/Events/ApplicationEvent.bf

@@ -89,4 +89,44 @@ namespace GlitchyEngine.Events
 			strBuffer.AppendF("WindowMovedEvent: {}, {} (is moving: {})", _x, _y, _isMoving);
 		}
 	}
+
+	public class WindowActivateEvent : Event, IEvent
+	{
+		public override EventType EventType => .WindowMoved;
+
+		public override StringView Name => "WindowActivated";
+
+		public override EventCategory Category => .Application;
+
+		public static EventType StaticType => .WindowActivated;
+
+		public this()
+		{
+		}
+
+		public override void ToString(String strBuffer)
+		{
+			strBuffer.AppendF("WindowActivatedEvent");
+		}
+	}
+
+	public class WindowDeactivateEvent : Event, IEvent
+	{
+		public override EventType EventType => .WindowMoved;
+
+		public override StringView Name => "WindowDeactivated";
+
+		public override EventCategory Category => .Application;
+
+		public static EventType StaticType => .WindowDeactivated;
+
+		public this()
+		{
+		}
+
+		public override void ToString(String strBuffer)
+		{
+			strBuffer.AppendF("WindowDeactivatedEvent");
+		}
+	}
 }

GlitchyEngine/src/Events/Event.bf

@@ -4,7 +4,7 @@ namespace GlitchyEngine.Events
 	public enum EventType
 	{
 		None = 0,
-		WindowClose, WindowResize, WindowFocus, WindowLostFocus, WindowMoved,
+		WindowClose, WindowResize, WindowFocus, WindowLostFocus, WindowMoved, WindowActivated, WindowDeactivated,
 		AppTick, AppUpdate, AppRender,
 		KeyPressed, KeyReleased, KeyTyped,
 		MouseButtonPressed, MouseButtonReleased, MouseMoved, MouseScrolled

GlitchyEngine/src/Platform/Windows/WindowsInput.bf

@@ -20,8 +20,10 @@ namespace GlitchyEngine
 			public Point CursorPositionDifference;
 		}
 
-		static WindowsInputState* CurrentState = new WindowsInputState() ~ delete _;
-		static WindowsInputState* LastState = new WindowsInputState() ~ delete _;
+		static WindowsInputState[2] IputStates;
+
+		static WindowsInputState* CurrentState = &IputStates[0];
+		static WindowsInputState* LastState = &IputStates[1];
 
 		//
 		// Current Keyboard state
@@ -162,10 +164,7 @@ namespace GlitchyEngine
 
 		public override static void NewFrame()
 		{
-			// Switch last and current states
-			var buffer = LastState;
-			LastState = CurrentState;
-			CurrentState = buffer;
+			Swap!(CurrentState, LastState);
 			
 			// Get current keyboard state
 			if(DirectX.Windows.Winuser.GetKeyboardState((uint8*)&CurrentState.KeyStates) == 0)

GlitchyEngine/src/Platform/Windows/WindowsWindow.bf

@@ -31,6 +31,8 @@ namespace GlitchyEngine
 
 		private bool _isVSync = true;
 
+		private bool _isActive;
+
 		private GraphicsContext _graphicsContext ~ _?.ReleaseRef();
 
 		public override GraphicsContext Context => _graphicsContext;
@@ -149,6 +151,8 @@ namespace GlitchyEngine
 			set => _isVSync = value;
 		}
 
+		public override bool IsActive => _isActive;
+
 		public override void* NativeWindow => (void*)(int)_windowHandle;
 
 		public override this(WindowDescription desc)
@@ -176,6 +180,9 @@ namespace GlitchyEngine
 			UnregisterClass(WindowClassName.ToScopedNativeWChar!(), _instanceHandle);
 		}
 
+		[LinkName(.C)]
+		static extern HWnd GetActiveWindow();
+
 		private void Init(WindowDescription desc)
 		{
 			Log.EngineLogger.Trace($"Creating window \"{desc.Title}\" ({desc.Width}, {desc.Height})...");
@@ -215,6 +222,9 @@ namespace GlitchyEngine
 			LoadWindowRectangle();
 
 			Log.EngineLogger.Trace($"Created window \"{Title}\" ({Width}, {Height})");
+
+			// Determine whether or not the window is currently active
+			_isActive = GetActiveWindow() == _windowHandle;
 		}
 
 		private bool _isResizingOrMoving;
@@ -305,6 +315,25 @@ namespace GlitchyEngine
 					window._eventCallback(moveEvent);
 				}
 				 
+			case 0x0006: //WM_ACTIVATE
+				{
+					SplitHighAndLowOrder!((int64)wParam, let lowWParam, let highWParam);
+
+					bool isActivate = lowWParam > 0;
+
+					//HWnd windowHandle = (.)lParam;
+
+					if(window._isActive != isActivate)
+					{
+						window._isActive = isActivate;
+
+						if(window._isActive)
+							window._eventCallback(scope WindowActivateEvent());
+						else
+							window._eventCallback(scope WindowDeactivateEvent());
+
+					}
+				}
 				////
 				//// Keyboard input
 				////

GlitchyEngine/src/Window.bf

@@ -98,6 +98,11 @@ namespace GlitchyEngine
 		 */
 		public extern void* NativeWindow {get;}
 
+		/**
+		 * Gets whether or not the window is active.
+		 */
+		public extern bool IsActive {get;}
+
 		public EventCallback EventCallback
 		{
 			get => _eventCallback;

Sandbox/src/SandboxApp.bf

@@ -192,6 +192,8 @@ namespace Sandbox
 		}
 
 		public override void Update(GameTime gameTime)
+		{
+			if(Application.Get().Window.IsActive)
 			{
 				Vector2 movement = .();
 
@@ -219,6 +221,7 @@ namespace Sandbox
 				movement *= (float)(gameTime.FrameTime.TotalSeconds);
 
 				_camera.Position += .(movement, 0);
+			}
 
 			_camera.Width = _context.SwapChain.BackbufferViewport.Width / 256;
 			_camera.Height = _context.SwapChain.BackbufferViewport.Height / 256;