Scripting: Basic copying of entities during runtime + Reference Components using UUID

ScriptCore/Components/Component.cs

@@ -2,7 +2,7 @@ using GlitchyEngine.Core;
 
 namespace GlitchyEngine;
 
-public abstract class Component
+public abstract class Component : EngineObject
 {
-    public Entity Entity { get; internal set; }
+    public Entity Entity => new(_uuid);
 }

ScriptCore/Components/RigidBody2D.cs

@@ -14,7 +14,7 @@ public class Rigidbody2D : Component
     /// <param name="wakeUp">Wake up the body</param>
     public void ApplyForce(float2 force, float2 point, bool wakeUp = true)
     {
-        ScriptGlue.Rigidbody2D_ApplyForce(Entity._uuid, force, point, wakeUp);
+        ScriptGlue.Rigidbody2D_ApplyForce(_uuid, force, point, wakeUp);
     }
 
     /// <summary>
@@ -25,7 +25,7 @@ public class Rigidbody2D : Component
     /// <param name="wakeUp">Wake up the body</param>
     public void ApplyForceToCenter(float2 force, bool wakeUp = true)
     {
-        ScriptGlue.Rigidbody2D_ApplyForceToCenter(Entity._uuid, force, wakeUp);
+        ScriptGlue.Rigidbody2D_ApplyForceToCenter(_uuid, force, wakeUp);
     }
     
     /// <summary>
@@ -35,11 +35,11 @@ public class Rigidbody2D : Component
     {
         get
         {
-            ScriptGlue.Rigidbody2D_GetPosition(Entity._uuid, out float2 position);
+            ScriptGlue.Rigidbody2D_GetPosition(_uuid, out float2 position);
 
             return position;
         }
-        set => ScriptGlue.Rigidbody2D_SetPosition(Entity._uuid, value);
+        set => ScriptGlue.Rigidbody2D_SetPosition(_uuid, value);
     }
     
     /// <summary>
@@ -49,11 +49,11 @@ public class Rigidbody2D : Component
     {
         get
         {
-            ScriptGlue.Rigidbody2D_GetRotation(Entity._uuid, out float rotation);
+            ScriptGlue.Rigidbody2D_GetRotation(_uuid, out float rotation);
 
             return rotation;
         }
-        set => ScriptGlue.Rigidbody2D_SetRotation(Entity._uuid, value);
+        set => ScriptGlue.Rigidbody2D_SetRotation(_uuid, value);
     }
     
     /// <summary>
@@ -63,11 +63,11 @@ public class Rigidbody2D : Component
     {
         get
         {
-            ScriptGlue.Rigidbody2D_GetLinearVelocity(Entity._uuid, out float2 velocity);
+            ScriptGlue.Rigidbody2D_GetLinearVelocity(_uuid, out float2 velocity);
 
             return velocity;
         }
-        set => ScriptGlue.Rigidbody2D_SetLinearVelocity(Entity._uuid, value);
+        set => ScriptGlue.Rigidbody2D_SetLinearVelocity(_uuid, value);
     }
     
     /// <summary>
@@ -77,10 +77,10 @@ public class Rigidbody2D : Component
     {
         get
         {
-            ScriptGlue.Rigidbody2D_GetAngularVelocity(Entity._uuid, out float velocity);
+            ScriptGlue.Rigidbody2D_GetAngularVelocity(_uuid, out float velocity);
 
             return velocity;
         }
-        set => ScriptGlue.Rigidbody2D_SetAngularVelocity(Entity._uuid, value);
+        set => ScriptGlue.Rigidbody2D_SetAngularVelocity(_uuid, value);
     }
 }

ScriptCore/Entity.cs

@@ -72,7 +72,7 @@ public class Entity : EngineObject
         {
             return new T
             {
-                Entity = this
+                _uuid = _uuid
             };
         }
 
@@ -111,7 +111,7 @@ public class Entity : EngineObject
 
         return new T
         {
-            Entity = this
+            _uuid = _uuid
         };
     }
 
@@ -132,7 +132,9 @@ public class Entity : EngineObject
 
         Component component = Activator.CreateInstance(componentType) as Component;
         if (component != null)
-            component.Entity = this;
+        {
+            component._uuid = _uuid;
+        }
 
         return component;
     }
@@ -160,7 +162,7 @@ public class Entity : EngineObject
         foreach ((Type componentType, int index) in componentTypes.WithIndex())
         {
             components[index] = Activator.CreateInstance(componentType) as Component;
-            components[index].Entity = this;
+            components[index]._uuid = _uuid;
         }
 
         return components;
@@ -176,7 +178,7 @@ public class Entity : EngineObject
     {
         ScriptGlue.Entity_AddComponents(_uuid, new []{typeof(T1), typeof(T2)});
 
-        return (new T1 { Entity = this }, new T2 { Entity = this });
+        return (new T1 { _uuid = _uuid }, new T2 { _uuid = _uuid });
     }
 
     /// <summary>
@@ -190,7 +192,7 @@ public class Entity : EngineObject
     {
         ScriptGlue.Entity_AddComponents(_uuid, new []{typeof(T1), typeof(T2), typeof(T3)});
 
-        return (new T1 { Entity = this }, new T2 { Entity = this }, new T3 { Entity = this });
+        return (new T1 { _uuid = _uuid }, new T2 { _uuid = _uuid }, new T3 { _uuid = _uuid });
     }
 
     #endregion Add Components

ScriptCore/Physics/Collision2D.cs

@@ -26,10 +26,10 @@ public struct Collision2D
     /// Gets the rigidbody whose Collider takes part in the collision.
     /// This Rigidbody is either a component of the entity whose script instance received the event or a parent of it.
     /// </summary>
-    public Rigidbody2D Rigidbody => new() { Entity = Entity };
+    public Rigidbody2D Rigidbody => new() { _uuid = _entity };
 
     /// <summary>
     /// Gets the other rigidbody whose Collider takes part in the collision.
     /// </summary>
-    public Rigidbody2D OtherRigidbody => new() { Entity = OtherEntity };
+    public Rigidbody2D OtherRigidbody => new() { _uuid = _otherEntity };
 }