server_common/recastnavigation_v1.6.0
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Added few more asserts. Moved hash function to common.

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This commit is contained in:
Mikko Mononen 2010-08-26 18:26:56 +00:00
parent 3f0995dc1c
commit c6ce6e2ba9
3 changed files with 19 additions and 12 deletions
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11
Detour/Include/DetourCommon.h
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@ -182,6 +182,17 @@ inline unsigned int dtIlog2(unsigned int v)
inline int dtAlign4(int x) { return (x+3) & ~3; }
inline unsigned int dtHashInt(unsigned int a)
{
a += ~(a<<15);
a ^= (a>>10);
a += (a<<3);
a ^= (a>>6);
a += ~(a<<11);
a ^= (a>>16);
return a;
}
inline int dtOppositeTile(int side) { return (side+4) & 0x7; }
inline float dtVdot2D(const float* u, const float* v)

10
Detour/Include/DetourNode.h
View File

@ -80,16 +80,6 @@ public:
inline unsigned short getNext(int i) const { return m_next[i]; }
private:
inline unsigned int hashint(unsigned int a) const
{
a += ~(a<<15);
a ^= (a>>10);
a += (a<<3);
a ^= (a>>6);
a += ~(a<<11);
a ^= (a>>16);
return a;
}
dtNode* m_nodes;
unsigned short* m_first;

10
Detour/Source/DetourNode.cpp
View File

@ -19,6 +19,7 @@
#include "DetourNode.h"
#include "DetourAlloc.h"
#include "DetourAssert.h"
#include "DetourCommon.h"
#include <string.h>
//////////////////////////////////////////////////////////////////////////////////////////
@ -30,6 +31,9 @@ dtNodePool::dtNodePool(int maxNodes, int hashSize) :
m_hashSize(hashSize),
m_nodeCount(0)
{
dtAssert(dtNextPow2(m_hashSize) == (unsigned int)m_hashSize);
dtAssert(m_maxNodes > 0);
m_nodes = (dtNode*)dtAlloc(sizeof(dtNode)*m_maxNodes, DT_ALLOC_PERM);
m_next = (unsigned short*)dtAlloc(sizeof(unsigned short)*m_maxNodes, DT_ALLOC_PERM);
m_first = (unsigned short*)dtAlloc(sizeof(unsigned short)*hashSize, DT_ALLOC_PERM);
@ -57,7 +61,7 @@ void dtNodePool::clear()
const dtNode* dtNodePool::findNode(unsigned int id) const
{
unsigned int bucket = hashint(id) & (m_hashSize-1);
unsigned int bucket = dtHashInt(id) & (m_hashSize-1);
unsigned short i = m_first[bucket];
while (i != DT_NULL_IDX)
{
@ -70,7 +74,7 @@ const dtNode* dtNodePool::findNode(unsigned int id) const
dtNode* dtNodePool::getNode(unsigned int id)
{
unsigned int bucket = hashint(id) & (m_hashSize-1);
unsigned int bucket = dtHashInt(id) & (m_hashSize-1);
unsigned short i = m_first[bucket];
dtNode* node = 0;
while (i != DT_NULL_IDX)
@ -107,6 +111,8 @@ dtNodeQueue::dtNodeQueue(int n) :
m_capacity(n),
m_size(0)
{
dtAssert(m_capacity > 0);
m_heap = (dtNode**)dtAlloc(sizeof(dtNode*)*(m_capacity+1), DT_ALLOC_PERM);
dtAssert(m_heap);
}