/*
* Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com
*
* 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 "b2ConstantAccelController.h"

b2ConstantAccelController::b2ConstantAccelController(const b2ConstantAccelControllerDef* def) : b2Controller(def)
{
	A = def->A;

	m_type = e_constantAccelController;
}

void b2ConstantAccelController::Step(const b2TimeStep& step)
{
	for(b2ControllerEdge *i=m_bodyList;i;i=i->nextBody){
		b2Body* body = i->body;
		if(body->IsSleeping())
			continue; 
		body->SetLinearVelocity(body->GetLinearVelocity()+step.dt*A);
	}
}

void b2ConstantAccelController::Destroy(b2BlockAllocator* allocator)
{
	allocator->Free(this, sizeof(b2ConstantAccelController));
}


b2ConstantAccelController* b2ConstantAccelControllerDef::Create(b2BlockAllocator* allocator)
{
	void* mem = allocator->Allocate(sizeof(b2ConstantAccelController));
	return new (mem) b2ConstantAccelController(this);
}