重构项目src框架，添加c#脚本功能

Editor/SandboxProject/Source/Camera.cs

@@ -0,0 +1,51 @@
+using System;
+using Hazel;
+
+namespace Sandbox {
+
+    public class Camera : Entity
+    {
+//         private TransformComponent m_Transform;
+//         private RigidBody2DComponent m_Rigidbody;
+
+
+/*
+        void OnCreate()
+        {
+            Console.WriteLine($"Player.OnCreate - {ID}");
+
+            m_Transform = GetComponent<TransformComponent>();
+            m_Rigidbody = GetComponent<RigidBody2DComponent>();
+        }
+
+ */
+        void OnUpdate(float ts)
+        {
+//             Console.WriteLine($"Player.OnUpdate: {ts}");
+
+            float speed = 1.0f;
+            Vector3 velocity = Vector3.Zero;
+
+            if(Input.IsKeyDown(KeyCode.UP))
+                velocity.Y = 1.0f;
+            else if(Input.IsKeyDown(KeyCode.DOWN))
+                velocity.Y = -1.0f;
+
+            if(Input.IsKeyDown(KeyCode.LEFT))
+                velocity.X = -1.0f;
+            else if(Input.IsKeyDown(KeyCode.RIGHT))
+                velocity.X = 1.0f;
+
+//             m_Rigidbody.ApplyLinearImpulse(velocity.XY * speed, Vector2.Zero, true);
+
+            velocity *= speed;
+
+            Vector3 translation = Translation;
+            translation += velocity * ts;
+            Translation = translation;
+        }
+    }
+
+
+}
+