Initial Mercurial commit.

src/modules/physics/box2d/Joint.cpp

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+/**
+* Copyright (c) 2006-2009 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 "Joint.h"
+
+// STD
+#include <bitset>
+
+// Module
+#include "Body.h"
+#include "World.h"
+
+namespace love
+{
+namespace physics
+{
+namespace box2d
+{
+	Joint::Joint(Body * body1)
+		: body1(body1), body2(0), world(body1->world)
+	{
+		body1->retain();
+	}
+
+	Joint::Joint(Body * body1, Body * body2)
+		: body1(body1), body2(body2), world(body1->world)
+	{
+		body1->retain();
+		body2->retain();
+	}
+
+	Joint::~Joint()
+	{
+		if(body1 != 0)
+			body1->release();
+		if(body2 != 0)
+			body2->release();
+
+		joint = 0;
+	}
+
+	int Joint::getType() const
+	{
+		switch(joint->GetType())
+		{
+		case e_revoluteJoint: 
+			return love::JOINT_REVOLUTE;
+		case e_prismaticJoint: 
+			return love::JOINT_PRISMATIC;
+		case e_distanceJoint: 
+			return love::JOINT_DISTANCE;
+		case e_pulleyJoint: 
+			return love::JOINT_PULLEY;
+		case e_mouseJoint: 
+			return love::JOINT_MOUSE;
+		case e_gearJoint: 
+			return love::JOINT_GEAR;
+		default:
+			return -1;
+		}
+	}
+
+	int Joint::getAnchors(lua_State * L)
+	{
+		lua_pushnumber(L, world->scaleUp(joint->GetAnchor1().x));
+		lua_pushnumber(L, world->scaleUp(joint->GetAnchor1().y));
+		lua_pushnumber(L, world->scaleUp(joint->GetAnchor2().x));
+		lua_pushnumber(L, world->scaleUp(joint->GetAnchor2().y));
+		return 4;
+	}
+
+	int Joint::getReactionForce(lua_State * L)
+	{
+		b2Vec2 v = joint->GetReactionForce();
+		lua_pushnumber(L, v.x);
+		lua_pushnumber(L, v.y);
+		return 2;
+	}
+
+	float Joint::getReactionTorque()
+	{
+		return joint->GetReactionTorque();
+	}
+
+	void Joint::setCollideConnected(bool collide)
+	{
+		joint->m_collideConnected = collide;
+	}
+
+	bool Joint::getCollideConnected() const
+	{
+		return joint->m_collideConnected;
+	}
+
+	b2Joint * Joint::createJoint(b2JointDef * def)
+	{
+		joint = world->world->CreateJoint(def);
+		return joint;
+	}
+
+	void Joint::destroyJoint(b2Joint * joint)
+	{
+		world->world->DestroyJoint(joint);
+	}
+
+} // box2d
+} // physics
+} // love