74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
|
/*
|
||
|
|
Copyright (c) 2003-2006 Gino van den Bergen / Erwin Coumans http://continuousphysics.com/Bullet/
|
||
|
|
|
||
|
|
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 GEN_LIST_H
|
||
|
|
#define GEN_LIST_H
|
||
|
|
|
||
|
|
class btGEN_Link {
|
||
|
|
public:
|
||
|
|
btGEN_Link() : m_next(0), m_prev(0) {}
|
||
|
|
btGEN_Link(btGEN_Link *next, btGEN_Link *prev) : m_next(next), m_prev(prev) {}
|
||
|
|
|
||
|
|
btGEN_Link *getNext() const { return m_next; }
|
||
|
|
btGEN_Link *getPrev() const { return m_prev; }
|
||
|
|
|
||
|
|
bool isHead() const { return m_prev == 0; }
|
||
|
|
bool isTail() const { return m_next == 0; }
|
||
|
|
|
||
|
|
void insertBefore(btGEN_Link *link) {
|
||
|
|
m_next = link;
|
||
|
|
m_prev = link->m_prev;
|
||
|
|
m_next->m_prev = this;
|
||
|
|
m_prev->m_next = this;
|
||
|
|
}
|
||
|
|
|
||
|
|
void insertAfter(btGEN_Link *link) {
|
||
|
|
m_next = link->m_next;
|
||
|
|
m_prev = link;
|
||
|
|
m_next->m_prev = this;
|
||
|
|
m_prev->m_next = this;
|
||
|
|
}
|
||
|
|
|
||
|
|
void remove() {
|
||
|
|
m_next->m_prev = m_prev;
|
||
|
|
m_prev->m_next = m_next;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
btGEN_Link *m_next;
|
||
|
|
btGEN_Link *m_prev;
|
||
|
|
};
|
||
|
|
|
||
|
|
class btGEN_List {
|
||
|
|
public:
|
||
|
|
btGEN_List() : m_head(&m_tail, 0), m_tail(0, &m_head) {}
|
||
|
|
|
||
|
|
btGEN_Link *getHead() const { return m_head.getNext(); }
|
||
|
|
btGEN_Link *getTail() const { return m_tail.getPrev(); }
|
||
|
|
|
||
|
|
void addHead(btGEN_Link *link) { link->insertAfter(&m_head); }
|
||
|
|
void addTail(btGEN_Link *link) { link->insertBefore(&m_tail); }
|
||
|
|
|
||
|
|
private:
|
||
|
|
btGEN_Link m_head;
|
||
|
|
btGEN_Link m_tail;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
|