BulletCollisionResult.h
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BulletCollisionResult.h
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	#ifndef ECHOBULLETMANIFOLDRESULT_H
	#define ECHOBULLETMANIFOLDRESULT_H

	#include <echo/Physics/CollisionResult.h>
	#include <BulletCollision/CollisionDispatch/btManifoldResult.h>

	namespace Echo
	{
	class BulletCollisionResult : public CollisionResult, public btManifoldResult
	{
	public:
	BulletCollisionResult(const btCollisionObjectWrapper* body0, const btCollisionObjectWrapper* body1) :
	btManifoldResult(body0, body1),
	mNumberOfContactPoints(0),
	mLastContactPoint(Vector3::ZERO)
	{}

	~BulletCollisionResult(){}

	virtual Size GetNumberOfContactPoints() const override {return mNumberOfContactPoints;}
	virtual Vector3 GetLastContactPoint() const override { return mLastContactPoint;}
	private:
	/**
	* Called by bullet to add a contact point.
	*/
	virtual void addContactPoint(const btVector3& normalOnBInWorld, const btVector3& pointInWorld, btScalar depth) override
	{
	mNumberOfContactPoints++;
	mLastContactPoint.x = pointInWorld.getX();
	mLastContactPoint.y = pointInWorld.getY();
	mLastContactPoint.z = pointInWorld.getZ();
	btManifoldResult::addContactPoint(normalOnBInWorld, pointInWorld, depth);
	}

	Size mNumberOfContactPoints;
	Vector3 mLastContactPoint;
	};
	}
	#endif /* BULLETMANIFOLDRESULT_H */