Added shapes, found and fixed possible memory leak

PartInstance.h

@@ -32,6 +32,7 @@ public:
 	CoordinateFrame getCFrameRenderBased();
 	Vector3 getSize();
 	void setSize(Vector3);
+	void setShape(Enum::Shape::Value shape);
 	bool canCollide;
 	bool anchored;
 	Vector3 rotVelocity;
@@ -43,6 +44,8 @@ public:
 	void addNormals(Vector3 normal);
 	void addSingularNormal(Vector3 normal);
 	void addTriangle(Vector3 vertexPos,Vector3 vertexPos2, Vector3 vertexPos3);
+	void addPlus(Vector3 v1);
+	void addPlus2(Vector3 v1);
 	void debugPrintVertexIDs(RenderDevice* rd, GFontRef font, Matrix3 camRot);
 	void makeFace(int vertex1, int vertex2, int vertex3);
 	bool isUniqueVertex(Vector3 pos);