mirror of
https://github.com/love2d/love.git
synced 2026-08-16 08:11:02 +02:00
Bill Meltsner
81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
/**
|
|
* Copyright (c) 2006-2012 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.
|
|
**/
|
|
|
|
#ifndef LOVE_PHYSICS_BOX2D_PULLEY_JOINT_H
|
|
#define LOVE_PHYSICS_BOX2D_PULLEY_JOINT_H
|
|
|
|
// Module
|
|
#include "Joint.h"
|
|
|
|
namespace love
|
|
{
|
|
namespace physics
|
|
{
|
|
namespace box2d
|
|
{
|
|
/**
|
|
* The PulleyJoint The pulley connects two bodies to ground and
|
|
* to each other. As one body goes up, the other goes down. The
|
|
* total length of the pulley rope is conserved according to the
|
|
* initial configuration: length1 + ratio * length2 <= constant.
|
|
**/
|
|
class PulleyJoint : public Joint
|
|
{
|
|
private:
|
|
// The Box2D DistanceJoint object.
|
|
b2PulleyJoint * joint;
|
|
public:
|
|
|
|
/**
|
|
* Creates a PulleyJoint connecting bodyA to bodyB.
|
|
**/
|
|
PulleyJoint(Body * bodyA, Body * bodyB, b2Vec2 groundAnchorA, b2Vec2 groundAnchorB, b2Vec2 anchorA, b2Vec2 anchorB, float ratio, bool collideConnected);
|
|
|
|
virtual ~PulleyJoint();
|
|
|
|
/**
|
|
* Gets the ground anchors position in world
|
|
* coordinates.
|
|
**/
|
|
int getGroundAnchors(lua_State * L);
|
|
|
|
/**
|
|
* Gets the current length of the segment attached to bodyA.
|
|
**/
|
|
float getLengthA() const;
|
|
|
|
/**
|
|
* Gets the current length of the segment attached to bodyB.
|
|
**/
|
|
float getLengthB() const;
|
|
|
|
/**
|
|
* Gets the pulley ratio.
|
|
**/
|
|
float getRatio() const;
|
|
|
|
};
|
|
|
|
} // box2d
|
|
} // physics
|
|
} // love
|
|
|
|
#endif // LOVE_PHYSICS_BOX2D_PULLEY_JOINT_H
|