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Paul 2001-02-16 22:53:16 +00:00
parent deeafdb0d1
commit 301deb6d6c
7 changed files with 52 additions and 74 deletions
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16
source/level/layercollision.cpp
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@ -44,6 +44,7 @@ int CLayerCollision::getHeightFromGround(int _x,int _y,int _maxHeight)
int mapX,mapY,xFraction,yFraction;
int distanceFromGround;
int colHeight;
int maxHeightToCheck;
mapX=_x>>4;
mapY=(_y>>4)*MapWidth;
@ -51,38 +52,43 @@ int CLayerCollision::getHeightFromGround(int _x,int _y,int _maxHeight)
yFraction=16-(_y&0x0f);
distanceFromGround=0;
colHeight=m_collisionTable[(Map[mapX+mapY]*16)+xFraction];if(Map[mapX+mapY])colHeight++;
colHeight=m_collisionTable[(Map[mapX+mapY]*16)+xFraction];
if(colHeight)
{
// Inside a collision block.. find the nearest ground above this point
maxHeightToCheck=-_maxHeight-16; // Need to check one block more incase we cross onto a new block
while(colHeight==16)
{
_y-=16;
mapY-=MapWidth;
distanceFromGround-=16;
if(distanceFromGround<=-_maxHeight)
if(distanceFromGround<=maxHeightToCheck)
{
return -_maxHeight;
}
colHeight=m_collisionTable[(Map[mapX+mapY]*16)+xFraction];if(Map[mapX+mapY])colHeight++;
colHeight=m_collisionTable[(Map[mapX+mapY]*16)+xFraction];
}
distanceFromGround+=yFraction-colHeight;
if(distanceFromGround<-_maxHeight)distanceFromGround=-_maxHeight;
}
else
{
// Not inside a collision block.. find the nearest ground below this point
maxHeightToCheck=_maxHeight+16; // Need to check one block more incase we cross onto a new block
while(colHeight==0)
{
_y+=16;
mapY+=MapWidth;
distanceFromGround+=16;
if(distanceFromGround>=_maxHeight)
if(distanceFromGround>=maxHeightToCheck)
{
return _maxHeight;
}
colHeight=m_collisionTable[(Map[mapX+mapY]*16)+xFraction];if(Map[mapX+mapY])colHeight++;
colHeight=m_collisionTable[(Map[mapX+mapY]*16)+xFraction];
}
distanceFromGround+=yFraction-colHeight;
if(distanceFromGround>_maxHeight)distanceFromGround=_maxHeight;
}
return distanceFromGround;