/**
* Copyright (c) 2006-2011 LOVE Development Team
* 
* This software is provided 'as-is', without any express or implied
* warranty.  In no event will the authors be held liable for any damages
* arising from the use of this software.
* 
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 
* 1. The origin of this software must not be misrepresented; you must not
*    claim that you wrote the original software. If you use this software
*    in a product, an acknowledgment in the product documentation would be
*    appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
*    misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
**/

#include "RevoluteJoint.h"

#include <common/math.h>

// Module
#include "Body.h"
#include "World.h"
#include "Physics.h"

namespace love
{
namespace physics
{
namespace box2d
{
	RevoluteJoint::RevoluteJoint(Body * body1, Body * body2, float x, float y, bool collideConnected)
		: Joint(body1, body2), joint(NULL)
	{	
		b2RevoluteJointDef def;
		def.Initialize(body1->body, body2->body, Physics::scaleDown(b2Vec2(x,y)));
		def.collideConnected = collideConnected;
		joint = (b2RevoluteJoint*)createJoint(&def);
	}

	RevoluteJoint::~RevoluteJoint()
	{
		destroyJoint(joint);
		joint = 0;
	}

	float RevoluteJoint::getJointAngle() const
	{
		return joint->GetJointAngle();
	}

	float RevoluteJoint::getJointSpeed() const
	{
		return joint->GetJointSpeed();
	}

	void RevoluteJoint::enableMotor(bool motor)
	{
		return joint->EnableMotor(motor);
	}

	bool RevoluteJoint::isMotorEnabled() const
	{
		return joint->IsMotorEnabled();
	}

	void RevoluteJoint::setMaxMotorTorque(float torque)
	{
		joint->SetMaxMotorTorque(Physics::scaleDown(Physics::scaleDown(torque)));
	}
	
	void RevoluteJoint::setMotorSpeed(float speed)
	{
		joint->SetMotorSpeed(speed);
	}

	float RevoluteJoint::getMotorSpeed() const
	{
		return joint->GetMotorSpeed();
	}

	float RevoluteJoint::getMotorTorque(float inv_dt) const
	{
		return Physics::scaleUp(Physics::scaleUp(joint->GetMotorTorque(inv_dt)));
	}

	void RevoluteJoint::enableLimit(bool limit)
	{
		joint->EnableLimit(limit);
	}

	bool RevoluteJoint::isLimitEnabled() const
	{
		return joint->IsLimitEnabled();
	}

	void RevoluteJoint::setUpperLimit(float limit)
	{
		joint->SetLimits(joint->GetLowerLimit(), limit);
	}

	void RevoluteJoint::setLowerLimit(float limit)
	{
		joint->SetLimits(limit, joint->GetUpperLimit());
	}

	void RevoluteJoint::setLimits(float lower, float upper)
	{
		joint->SetLimits(lower, upper);
	}

	float RevoluteJoint::getLowerLimit() const
	{
		return joint->GetLowerLimit();
	}

	float RevoluteJoint::getUpperLimit() const
	{
		return joint->GetUpperLimit();
	}

	int RevoluteJoint::getLimits(lua_State * L)
	{
		lua_pushnumber(L, joint->GetLowerLimit());
		lua_pushnumber(L, joint->GetUpperLimit());
		return 2;
	}

} // box2d
} // physics
} // love