mirror of
https://github.com/love2d/love.git
synced 2026-08-15 15:51:12 +02:00
Bart van Strien
137 lines
3.0 KiB
C++
137 lines
3.0 KiB
C++
/**
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* Copyright (c) 2006-2011 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#include "Joint.h"
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// STD
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#include <bitset>
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// Module
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#include "Body.h"
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#include "World.h"
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#include "Physics.h"
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namespace love
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{
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namespace physics
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{
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namespace box2d
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{
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Joint::Joint(Body * body1)
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: body1(body1), body2(0), world(body1->world)
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{
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body1->retain();
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}
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Joint::Joint(Body * body1, Body * body2)
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: body1(body1), body2(body2), world(body1->world)
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{
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body1->retain();
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body2->retain();
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}
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Joint::~Joint()
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{
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if (body1 != 0)
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body1->release();
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if (body2 != 0)
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body2->release();
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joint = 0;
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}
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Joint::Type Joint::getType() const
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{
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switch(joint->GetType())
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{
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case e_revoluteJoint:
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return JOINT_REVOLUTE;
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case e_prismaticJoint:
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return JOINT_PRISMATIC;
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case e_distanceJoint:
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return JOINT_DISTANCE;
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case e_pulleyJoint:
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return JOINT_PULLEY;
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case e_mouseJoint:
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return JOINT_MOUSE;
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case e_gearJoint:
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return JOINT_GEAR;
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case e_frictionJoint:
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return JOINT_FRICTION;
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case e_weldJoint:
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return JOINT_WELD;
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case e_wheelJoint:
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return JOINT_WHEEL;
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case e_ropeJoint:
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return JOINT_ROPE;
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default:
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return JOINT_INVALID;
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}
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}
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int Joint::getAnchors(lua_State * L)
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{
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lua_pushnumber(L, Physics::scaleUp(joint->GetAnchorA().x));
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lua_pushnumber(L, Physics::scaleUp(joint->GetAnchorA().y));
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lua_pushnumber(L, Physics::scaleUp(joint->GetAnchorB().x));
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lua_pushnumber(L, Physics::scaleUp(joint->GetAnchorB().y));
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return 4;
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}
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int Joint::getReactionForce(lua_State * L)
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{
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float dt = (float)luaL_checknumber(L, 1);
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b2Vec2 v = Physics::scaleUp(joint->GetReactionForce(dt));
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lua_pushnumber(L, v.x);
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lua_pushnumber(L, v.y);
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return 2;
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}
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float Joint::getReactionTorque(float dt)
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{
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return Physics::scaleUp(Physics::scaleUp(joint->GetReactionTorque(dt)));
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}
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b2Joint * Joint::createJoint(b2JointDef * def)
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{
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joint = world->world->CreateJoint(def);
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return joint;
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}
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void Joint::destroyJoint(b2Joint * joint)
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{
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if (joint != NULL)
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world->world->DestroyJoint(joint);
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}
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bool Joint::isActive() const
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{
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return joint->IsActive();
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}
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bool Joint::getCollideConnected() const
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{
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return joint->GetCollideConnected();
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}
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} // box2d
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} // physics
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} // love
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