anki-3d-engine/AnKi/Physics2/PhysicsCollisionShape.h

// Copyright (C) 2009-present, Panagiotis Christopoulos Charitos and contributors.
// All rights reserved.
// Code licensed under the BSD License.
// http://www.anki3d.org/LICENSE

#pragma once

#include <AnKi/Physics2/Common.h>
#include <AnKi/Util/WeakArray.h>
#include <AnKi/Util/ClassWrapper.h>

namespace anki {
namespace v2 {

/// Wrapper on top of JPH collision shapes.
class PhysicsCollisionShape : public PhysicsObjectBase
{
	ANKI_PHYSICS_COMMON_FRIENDS
	friend class PhysicsCollisionShapePtrDeleter;
	friend class PhysicsPlayerController;
	friend class PhysicsBody;

public:
	PhysicsCollisionShape(const PhysicsCollisionShape&) = delete;

	PhysicsCollisionShape& operator=(const PhysicsCollisionShape&) = delete;

private:
	union
	{
		ClassWrapper<JPH::Shape> m_shapeBase;
		ClassWrapper<JPH::BoxShape> m_box;
		ClassWrapper<JPH::SphereShape> m_sphere;
		ClassWrapper<JPH::CapsuleShape> m_capsule;
		ClassWrapper<JPH::ScaledShape> m_scaled; ///< We don't hold a reference to the target shape to avoid locking mutexes twice.
	};

	PhysicsCollisionShape()
		: PhysicsObjectBase(PhysicsObjectType::kCollisionShape)
	{
		ANKI_ASSERT(&m_shapeBase == static_cast<JPH::Shape*>(&m_box));
		ANKI_ASSERT(&m_shapeBase == static_cast<JPH::Shape*>(&m_sphere));
		ANKI_ASSERT(&m_shapeBase == static_cast<JPH::Shape*>(&m_capsule));
		ANKI_ASSERT(&m_shapeBase == static_cast<JPH::Shape*>(&m_scaled));
	}

	~PhysicsCollisionShape()
	{
		m_shapeBase.destroy();
	}
};

} // namespace v2
} // end namespace anki