94 lines
		
	
	
		
			2.4 KiB
		
	
	
	
		
			C
		
	
	
	
		
		
			
		
	
	
			94 lines
		
	
	
		
			2.4 KiB
		
	
	
	
		
			C
		
	
	
	
|  | /*
 | ||
|  | * Copyright (c) 2006-2009 Erin Catto http://www.box2d.org
 | ||
|  | * | ||
|  | * 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 B2_ISLAND_H
 | ||
|  | #define B2_ISLAND_H
 | ||
|  | 
 | ||
|  | #include "Box2D/Common/b2Math.h"
 | ||
|  | #include "Box2D/Dynamics/b2Body.h"
 | ||
|  | #include "Box2D/Dynamics/b2TimeStep.h"
 | ||
|  | 
 | ||
|  | class b2Contact; | ||
|  | class b2Joint; | ||
|  | class b2StackAllocator; | ||
|  | class b2ContactListener; | ||
|  | struct b2ContactVelocityConstraint; | ||
|  | struct b2Profile; | ||
|  | 
 | ||
|  | /// This is an internal class.
 | ||
|  | class b2Island | ||
|  | { | ||
|  | public: | ||
|  | 	b2Island(int32 bodyCapacity, int32 contactCapacity, int32 jointCapacity, | ||
|  | 			b2StackAllocator* allocator, b2ContactListener* listener); | ||
|  | 	~b2Island(); | ||
|  | 
 | ||
|  | 	void Clear() | ||
|  | 	{ | ||
|  | 		m_bodyCount = 0; | ||
|  | 		m_contactCount = 0; | ||
|  | 		m_jointCount = 0; | ||
|  | 	} | ||
|  | 
 | ||
|  | 	void Solve(b2Profile* profile, const b2TimeStep& step, const b2Vec2& gravity, bool allowSleep); | ||
|  | 
 | ||
|  | 	void SolveTOI(const b2TimeStep& subStep, int32 toiIndexA, int32 toiIndexB); | ||
|  | 
 | ||
|  | 	void Add(b2Body* body) | ||
|  | 	{ | ||
|  | 		b2Assert(m_bodyCount < m_bodyCapacity); | ||
|  | 		body->m_islandIndex = m_bodyCount; | ||
|  | 		m_bodies[m_bodyCount] = body; | ||
|  | 		++m_bodyCount; | ||
|  | 	} | ||
|  | 
 | ||
|  | 	void Add(b2Contact* contact) | ||
|  | 	{ | ||
|  | 		b2Assert(m_contactCount < m_contactCapacity); | ||
|  | 		m_contacts[m_contactCount++] = contact; | ||
|  | 	} | ||
|  | 
 | ||
|  | 	void Add(b2Joint* joint) | ||
|  | 	{ | ||
|  | 		b2Assert(m_jointCount < m_jointCapacity); | ||
|  | 		m_joints[m_jointCount++] = joint; | ||
|  | 	} | ||
|  | 
 | ||
|  | 	void Report(const b2ContactVelocityConstraint* constraints); | ||
|  | 
 | ||
|  | 	b2StackAllocator* m_allocator; | ||
|  | 	b2ContactListener* m_listener; | ||
|  | 
 | ||
|  | 	b2Body** m_bodies; | ||
|  | 	b2Contact** m_contacts; | ||
|  | 	b2Joint** m_joints; | ||
|  | 
 | ||
|  | 	b2Position* m_positions; | ||
|  | 	b2Velocity* m_velocities; | ||
|  | 
 | ||
|  | 	int32 m_bodyCount; | ||
|  | 	int32 m_jointCount; | ||
|  | 	int32 m_contactCount; | ||
|  | 
 | ||
|  | 	int32 m_bodyCapacity; | ||
|  | 	int32 m_contactCapacity; | ||
|  | 	int32 m_jointCapacity; | ||
|  | }; | ||
|  | 
 | ||
|  | #endif
 |