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rude
116 lines
2.8 KiB
C++
116 lines
2.8 KiB
C++
/**
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* Copyright (c) 2006-2010 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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#ifndef LOVE_PHYSICS_BOX2D_CONTACT_H
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#define LOVE_PHYSICS_BOX2D_CONTACT_H
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// LOVE
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#include <common/Object.h>
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#include <common/runtime.h>
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#include "World.h"
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// Box2D
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#include "Include/Box2D.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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class World;
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/**
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* A Contact represents a collision point between
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* two shapes.
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**/
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class Contact : public Object
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{
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// Friends.
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friend class World;
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friend class World::ContactCallback;
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private:
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// The Box2D contact point.
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b2ContactPoint point;
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// The parent world. Needed for scaling.
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World * world;
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public:
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/**
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* Creates a new Contact by copying a Box2D contact
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* point. It does not store the pointer, but copy the
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* data pointed to.
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* @param point Pointer to the Box2D contact.
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**/
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Contact(World * world, const b2ContactPoint * point);
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virtual ~Contact();
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/**
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* Gets the position of the Contact.
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* @return The position along the x-axis.
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* @return The position along the y-axis.
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**/
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int getPosition(lua_State * L);
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/**
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* Gets the linear impact velocity.
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* @return The velocity along the x-axis.
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* @return The velocity along the y-axis.
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**/
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int getVelocity(lua_State * L);
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/**
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* Gets the collision normal.
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* @return The x-component of the normal.
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* @return The y-component of the normal.
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**/
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int getNormal(lua_State * L);
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/**
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* How far apart the shapes are. If they are intersecting
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* this value is negative.
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**/
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float getSeparation() const;
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/**
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* The mixed friction between the two shapes at
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* the point of impact.
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**/
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float getFriction() const;
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/**
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* The mixed restitution of the two shapes
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* at the point of impact.
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**/
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float getRestitution() const;
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};
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} // box2d
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} // physics
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} // love
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#endif // LOVE_PHYSICS_BOX2D_CONTACT_H
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