cleaned up patching of virtual functions; started CAutomobile

src/core/Placeable.h

@@ -19,8 +19,5 @@ public:
 	void SetHeading(float angle);
 	bool IsWithinArea(float x1, float y1, float x2, float y2);
 	bool IsWithinArea(float x1, float y1, float z1, float x2, float y2, float z2);
-
-	CPlaceable *ctor(void) { return ::new (this) CPlaceable(); }
-	void dtor(void) { this->CPlaceable::~CPlaceable(); }
 };
 static_assert(sizeof(CPlaceable) == 0x4C, "CPlaceable: error");