Update Joint APIs

--HG--
branch : box2d-update

src/modules/physics/box2d/PulleyJoint.cpp

@@ -31,12 +31,12 @@ namespace physics
 {
 namespace box2d
 {
-	PulleyJoint::PulleyJoint(Body * body1, Body * body2, b2Vec2 groundAnchor1, b2Vec2 groundAnchor2, b2Vec2 anchor1, b2Vec2 anchor2, float ratio, bool collideConnected)
-		: Joint(body1, body2), joint(NULL)
+	PulleyJoint::PulleyJoint(Body * bodyA, Body * bodyB, b2Vec2 groundAnchorA, b2Vec2 groundAnchorB, b2Vec2 anchorA, b2Vec2 anchorB, float ratio, bool collideConnected)
+		: Joint(bodyA, bodyB), joint(NULL)
 	{
 		b2PulleyJointDef def;
-		def.Initialize(body1->body, body2->body, Physics::scaleDown(groundAnchor1), Physics::scaleDown(groundAnchor2), \
-			 Physics::scaleDown(anchor1), Physics::scaleDown(anchor2), ratio);
+		def.Initialize(bodyA->body, bodyB->body, Physics::scaleDown(groundAnchorA), Physics::scaleDown(groundAnchorB), \
+			 Physics::scaleDown(anchorA), Physics::scaleDown(anchorB), ratio);
 		def.collideConnected = collideConnected;
 		
 		joint = (b2PulleyJoint*)createJoint(&def);
@@ -57,14 +57,14 @@ namespace box2d
 		return 4;
 	}
 	
-	float PulleyJoint::getLength1() const
+	float PulleyJoint::getLengthA() const
 	{
-		return Physics::scaleUp(joint->GetLength1());
+		return Physics::scaleUp(joint->GetLengthA());
 	}
 		
-	float PulleyJoint::getLength2() const
+	float PulleyJoint::getLengthB() const
 	{
-		return Physics::scaleUp(joint->GetLength2());
+		return Physics::scaleUp(joint->GetLengthB());
 	}
 	
 	float PulleyJoint::getRatio() const

src/modules/physics/box2d/PulleyJoint.h

@@ -44,9 +44,9 @@ namespace box2d
 	public:
 
 		/**
-		* Creates a PulleyJoint connecting body1 to body2. 
+		* Creates a PulleyJoint connecting bodyA to bodyB. 
 		**/
-		PulleyJoint(Body * body1, Body * body2, b2Vec2 groundAnchor1, b2Vec2 groundAnchor2, b2Vec2 anchor1, b2Vec2 anchor2, float ratio, bool collideConnected);
+		PulleyJoint(Body * bodyA, Body * bodyB, b2Vec2 groundAnchorA, b2Vec2 groundAnchorB, b2Vec2 anchorA, b2Vec2 anchorB, float ratio, bool collideConnected);
 		
 		virtual ~PulleyJoint();
 		
@@ -57,14 +57,14 @@ namespace box2d
 		int getGroundAnchors(lua_State * L);
 		
 		/**
-		* Gets the current length of the segment attached to body1.
+		* Gets the current length of the segment attached to bodyA.
 		**/
-		float getLength1() const;
+		float getLengthA() const;
 	
 		/**
-		* Gets the current length of the segment attached to body2.
+		* Gets the current length of the segment attached to bodyB.
 		**/
-		float getLength2() const;
+		float getLengthB() const;
 		
 		/**
 		* Gets the pulley ratio.

src/modules/physics/box2d/RevoluteJoint.cpp

@@ -83,9 +83,9 @@ namespace box2d
 		return joint->GetMotorSpeed();
 	}
 
-	float RevoluteJoint::getMotorTorque() const
+	float RevoluteJoint::getMotorTorque(float inv_dt) const
 	{
-		return joint->GetMotorTorque();
+		return joint->GetMotorTorque(inv_dt);
 	}
 
 	void RevoluteJoint::enableLimit(bool limit)

src/modules/physics/box2d/RevoluteJoint.h

@@ -87,8 +87,9 @@ namespace box2d
 
 		/**
 		* Get the current motor torque, usually in N-m.
+		* @param inv_dt The inverse timestep.
 		**/
-		float getMotorTorque() const;
+		float getMotorTorque(float inv_dt) const;
 
 		/**
 		* Enable/disable the joint limit.

src/modules/physics/box2d/wrap_Joint.cpp

@@ -59,7 +59,8 @@ namespace box2d
 	int w_Joint_getReactionTorque(lua_State * L)
 	{
 		Joint * t = luax_checkjoint(L, 1);
-		lua_pushnumber(L, t->getReactionTorque());
+		float inv_dt = (float)luaL_checknumber(L, 2);
+		lua_pushnumber(L, t->getReactionTorque(inv_dt));
 		return 1;
 	}
 

src/modules/physics/box2d/wrap_PrismaticJoint.cpp

@@ -86,7 +86,8 @@ namespace box2d
 	int w_PrismaticJoint_getMotorForce(lua_State * L)
 	{
 		PrismaticJoint * t = luax_checkprismaticjoint(L, 1);
-		lua_pushnumber(L, t->getMotorForce());
+		float inv_dt = (float)luaL_checknumber(L, 2);
+		lua_pushnumber(L, t->getMotorForce(inv_dt));
 		return 1;
 	}
 

src/modules/physics/box2d/wrap_PulleyJoint.cpp

@@ -38,17 +38,17 @@ namespace box2d
 		return t->getGroundAnchors(L);
 	}
 
-	int w_PulleyJoint_getLength1(lua_State * L)
+	int w_PulleyJoint_getLengthA(lua_State * L)
 	{
 		PulleyJoint * t = luax_checkpulleyjoint(L, 1);
-		lua_pushnumber(L, t->getLength1());
+		lua_pushnumber(L, t->getLengthA());
 		return 1;
 	}
 	
-	int w_PulleyJoint_getLength2(lua_State * L)
+	int w_PulleyJoint_getLengthB(lua_State * L)
 	{
 		PulleyJoint * t = luax_checkpulleyjoint(L, 1);
-		lua_pushnumber(L, t->getLength2());
+		lua_pushnumber(L, t->getLengthB());
 		return 1;
 	}
 	
@@ -61,8 +61,8 @@ namespace box2d
 
 	static const luaL_Reg functions[] = {
 		{ "getGroundAnchors", w_PulleyJoint_getGroundAnchors },
-		{ "getLength1", w_PulleyJoint_getLength1 },
-		{ "getLength2", w_PulleyJoint_getLength2 },
+		{ "getLengthA", w_PulleyJoint_getLengthA },
+		{ "getLengthB", w_PulleyJoint_getLengthB },
 		{ "getRatio", w_PulleyJoint_getRatio },
 		// From Joint.
 		{ "getType", w_Joint_getType },

src/modules/physics/box2d/wrap_PulleyJoint.h

@@ -34,8 +34,8 @@ namespace box2d
 {
 	PulleyJoint * luax_checkpulleyjoint(lua_State * L, int idx);
 	int w_PulleyJoint_getGroundAnchors(lua_State * L);
-	int w_PulleyJoint_getLength1(lua_State * L);
-	int w_PulleyJoint_getLength2(lua_State * L);
+	int w_PulleyJoint_getLengthA(lua_State * L);
+	int w_PulleyJoint_getLengthB(lua_State * L);
 	int w_PulleyJoint_getRatio(lua_State * L);
 	int luaopen_pulleyjoint(lua_State * L);
 

src/modules/physics/box2d/wrap_RevoluteJoint.cpp

@@ -86,7 +86,8 @@ namespace box2d
 	int w_RevoluteJoint_getMotorTorque(lua_State * L)
 	{
 		RevoluteJoint * t = luax_checkrevolutejoint(L, 1);
-		lua_pushnumber(L, t->getMotorTorque());
+		float inv_dt = (float)luaL_checknumber(L, 2);
+		lua_pushnumber(L, t->getMotorTorque(inv_dt));
 		return 1;
 	}