mirror of
https://github.com/love2d/love.git
synced 2026-08-15 15:51:12 +02:00
Bill Meltsner
116 lines
2.8 KiB
C++
116 lines
2.8 KiB
C++
/**
|
|
* Copyright (c) 2006-2011 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_CONTACT_H
|
|
#define LOVE_PHYSICS_BOX2D_CONTACT_H
|
|
|
|
// LOVE
|
|
#include <common/Object.h>
|
|
#include <common/runtime.h>
|
|
#include "World.h"
|
|
|
|
// Box2D
|
|
#include <Box2D/Box2D.h>
|
|
|
|
namespace love
|
|
{
|
|
namespace physics
|
|
{
|
|
namespace box2d
|
|
{
|
|
class World;
|
|
|
|
/**
|
|
* A Contact represents a collision point between
|
|
* two shapes.
|
|
**/
|
|
class Contact : public Object
|
|
{
|
|
// Friends.
|
|
friend class World;
|
|
friend class World::ContactCallback;
|
|
|
|
private:
|
|
|
|
// The Box2D contact point.
|
|
b2ContactPoint point;
|
|
|
|
// The parent world. Needed for scaling.
|
|
World * world;
|
|
|
|
public:
|
|
|
|
/**
|
|
* Creates a new Contact by copying a Box2D contact
|
|
* point. It does not store the pointer, but copy the
|
|
* data pointed to.
|
|
* @param point Pointer to the Box2D contact.
|
|
**/
|
|
Contact(World * world, const b2ContactPoint * point);
|
|
|
|
virtual ~Contact();
|
|
|
|
/**
|
|
* Gets the position of the Contact.
|
|
* @return The position along the x-axis.
|
|
* @return The position along the y-axis.
|
|
**/
|
|
int getPosition(lua_State * L);
|
|
|
|
/**
|
|
* Gets the linear impact velocity.
|
|
* @return The velocity along the x-axis.
|
|
* @return The velocity along the y-axis.
|
|
**/
|
|
int getVelocity(lua_State * L);
|
|
|
|
/**
|
|
* Gets the collision normal.
|
|
* @return The x-component of the normal.
|
|
* @return The y-component of the normal.
|
|
**/
|
|
int getNormal(lua_State * L);
|
|
|
|
/**
|
|
* How far apart the shapes are. If they are intersecting
|
|
* this value is negative.
|
|
**/
|
|
float getSeparation() const;
|
|
|
|
/**
|
|
* The mixed friction between the two shapes at
|
|
* the point of impact.
|
|
**/
|
|
float getFriction() const;
|
|
|
|
/**
|
|
* The mixed restitution of the two shapes
|
|
* at the point of impact.
|
|
**/
|
|
float getRestitution() const;
|
|
|
|
};
|
|
|
|
} // box2d
|
|
} // physics
|
|
} // love
|
|
|
|
#endif // LOVE_PHYSICS_BOX2D_CONTACT_H
|