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/*
* Copyright (c) 2006-2007 Erin Catto http://www.box2d.org
*
* 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 "Box2D/Dynamics/Joints/b2Joint.h"
#include "Box2D/Dynamics/Joints/b2DistanceJoint.h"
#include "Box2D/Dynamics/Joints/b2WheelJoint.h"
#include "Box2D/Dynamics/Joints/b2MouseJoint.h"
#include "Box2D/Dynamics/Joints/b2RevoluteJoint.h"
#include "Box2D/Dynamics/Joints/b2PrismaticJoint.h"
#include "Box2D/Dynamics/Joints/b2PulleyJoint.h"
#include "Box2D/Dynamics/Joints/b2GearJoint.h"
#include "Box2D/Dynamics/Joints/b2WeldJoint.h"
#include "Box2D/Dynamics/Joints/b2FrictionJoint.h"
#include "Box2D/Dynamics/Joints/b2RopeJoint.h"
#include "Box2D/Dynamics/Joints/b2MotorJoint.h"
#include "Box2D/Dynamics/b2Body.h"
#include "Box2D/Dynamics/b2World.h"
#include "Box2D/Common/b2BlockAllocator.h"
#include <new>
b2Joint* b2Joint::Create(const b2JointDef* def, b2BlockAllocator* allocator)
{
b2Joint* joint = nullptr;
switch (def->type)
{
case e_distanceJoint:
{
void* mem = allocator->Allocate(sizeof(b2DistanceJoint));
joint = new (mem) b2DistanceJoint(static_cast<const b2DistanceJointDef*>(def));
}
break;
case e_mouseJoint:
{
void* mem = allocator->Allocate(sizeof(b2MouseJoint));
joint = new (mem) b2MouseJoint(static_cast<const b2MouseJointDef*>(def));
}
break;
case e_prismaticJoint:
{
void* mem = allocator->Allocate(sizeof(b2PrismaticJoint));
joint = new (mem) b2PrismaticJoint(static_cast<const b2PrismaticJointDef*>(def));
}
break;
case e_revoluteJoint:
{
void* mem = allocator->Allocate(sizeof(b2RevoluteJoint));
joint = new (mem) b2RevoluteJoint(static_cast<const b2RevoluteJointDef*>(def));
}
break;
case e_pulleyJoint:
{
void* mem = allocator->Allocate(sizeof(b2PulleyJoint));
joint = new (mem) b2PulleyJoint(static_cast<const b2PulleyJointDef*>(def));
}
break;
case e_gearJoint:
{
void* mem = allocator->Allocate(sizeof(b2GearJoint));
joint = new (mem) b2GearJoint(static_cast<const b2GearJointDef*>(def));
}
break;
case e_wheelJoint:
{
void* mem = allocator->Allocate(sizeof(b2WheelJoint));
joint = new (mem) b2WheelJoint(static_cast<const b2WheelJointDef*>(def));
}
break;
case e_weldJoint:
{
void* mem = allocator->Allocate(sizeof(b2WeldJoint));
joint = new (mem) b2WeldJoint(static_cast<const b2WeldJointDef*>(def));
}
break;
case e_frictionJoint:
{
void* mem = allocator->Allocate(sizeof(b2FrictionJoint));
joint = new (mem) b2FrictionJoint(static_cast<const b2FrictionJointDef*>(def));
}
break;
case e_ropeJoint:
{
void* mem = allocator->Allocate(sizeof(b2RopeJoint));
joint = new (mem) b2RopeJoint(static_cast<const b2RopeJointDef*>(def));
}
break;
case e_motorJoint:
{
void* mem = allocator->Allocate(sizeof(b2MotorJoint));
joint = new (mem) b2MotorJoint(static_cast<const b2MotorJointDef*>(def));
}
break;
default:
b2Assert(false);
break;
}
return joint;
}
void b2Joint::Destroy(b2Joint* joint, b2BlockAllocator* allocator)
{
joint->~b2Joint();
switch (joint->m_type)
{
case e_distanceJoint:
allocator->Free(joint, sizeof(b2DistanceJoint));
break;
case e_mouseJoint:
allocator->Free(joint, sizeof(b2MouseJoint));
break;
case e_prismaticJoint:
allocator->Free(joint, sizeof(b2PrismaticJoint));
break;
case e_revoluteJoint:
allocator->Free(joint, sizeof(b2RevoluteJoint));
break;
case e_pulleyJoint:
allocator->Free(joint, sizeof(b2PulleyJoint));
break;
case e_gearJoint:
allocator->Free(joint, sizeof(b2GearJoint));
break;
case e_wheelJoint:
allocator->Free(joint, sizeof(b2WheelJoint));
break;
case e_weldJoint:
allocator->Free(joint, sizeof(b2WeldJoint));
break;
case e_frictionJoint:
allocator->Free(joint, sizeof(b2FrictionJoint));
break;
case e_ropeJoint:
allocator->Free(joint, sizeof(b2RopeJoint));
break;
case e_motorJoint:
allocator->Free(joint, sizeof(b2MotorJoint));
break;
default:
b2Assert(false);
break;
}
}
b2Joint::b2Joint(const b2JointDef* def)
{
b2Assert(def->bodyA != def->bodyB);
m_type = def->type;
m_prev = nullptr;
m_next = nullptr;
m_bodyA = def->bodyA;
m_bodyB = def->bodyB;
m_index = 0;
m_collideConnected = def->collideConnected;
m_islandFlag = false;
m_userData = def->userData;
m_edgeA.joint = nullptr;
m_edgeA.other = nullptr;
m_edgeA.prev = nullptr;
m_edgeA.next = nullptr;
m_edgeB.joint = nullptr;
m_edgeB.other = nullptr;
m_edgeB.prev = nullptr;
m_edgeB.next = nullptr;
}
bool b2Joint::IsActive() const
{
return m_bodyA->IsActive() && m_bodyB->IsActive();
}
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