Added Box2D

external/Box2D-2.3.1/Contributions/Platforms/Box2D.Net/Vector.cpp

@@ -0,0 +1,81 @@
+#pragma once
+
+#include "Stdafx.h"
+
+namespace Box2D
+{
+	namespace Net
+	{
+		public ref class Vector
+		{
+		internal:
+			b2Vec2 getVec2()
+			{
+				return b2Vec2(X, Y);
+			}
+
+		public:
+
+			//TODO: this needs to be read only outside the class,
+			//because if you have a vector as a get property, and
+			//try to set the X,Y components, it won't take to the
+			//original vector:
+			//
+			//ie: Shape.Extents.X += 10;
+			//won't behave like you think it should (or will it?)
+			float32 X, Y;
+
+			Vector() : X(0), Y(0) { }
+			Vector(float32 x, float32 y) : X(x), Y(y) { }
+			Vector(Vector^ other) : X(other->X), Y(other->Y) { }
+			Vector(const b2Vec2 &other) : X(other.x), Y(other.y) { }
+
+			/*
+			Vector^ Set(float32 x, float32 y)
+			{
+				X = x;
+				Y = y;
+				return this;
+			}
+			*/
+			
+			///Defines basic vector addition
+			static Vector^ operator +(Vector^ a, Vector^ b)
+			{
+				return gcnew Vector(a->X + b->X, a->Y + b->Y);
+			}
+			
+			///<summary>Negates a vector (that is, returns (-X, -Y)</summary>
+			static Vector^ operator - (Vector^ a)
+			{
+				return gcnew Vector(-a->X, -a->Y);
+			}
+
+			///<summary>Defines basic vector subtraction</summary>
+			static Vector^ operator - (Vector^ a, Vector^ b)
+			{
+				return gcnew Vector(a->X - b->X, a->Y - b->Y);
+			}
+			
+			///<summary>Scalar multiplication for a vector</summary>
+			static Vector^ operator * (Vector^ a, float32 b)
+			{
+				return gcnew Vector(a->X * b, a->Y * b);
+			}
+
+			/*
+			static Vector^ operator = (Vector^ a, Vector^ b)
+			{
+				a.X = b.X;
+				a.Y = b.Y;
+			}
+			*/
+
+			///<summary>Returns a string representation of this vector</summary>
+			virtual System::String^ ToString() override
+			{
+				return gcnew System::String("<" + X + ", " + Y + ">");
+			}
+		};
+	}
+}