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This commit is contained in:
Paul 2001-03-08 21:58:14 +00:00
parent 74b08969ef
commit bf5f222fd8
2 changed files with 108 additions and 49 deletions
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144
source/level/layercollision.cpp
View file

@ -25,18 +25,18 @@ u8 CLayerCollision::s_collisionTable[]=
1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8,
8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,15,15,14,14,13,13,12,12,11,11,10,10, 9, 9,
9, 9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,
9, 9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,
16,16,15,15,14,14,13,13,12,12,11,11,10,10, 9, 9,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8,
8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1,
1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16,
16,15,14,13,12,11,10, 9, 8, 7, 6, 5, 4, 3, 2, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,15,14,13,12,11,10, 9, 8, 7, 6, 5, 4, 3, 2, 1,
1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16,
};
@ -83,7 +83,6 @@ int CLayerCollision::getHeightFromGround(int _x,int _y,int _maxHeight)
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<=maxHeightToCheck)
@ -102,7 +101,6 @@ int CLayerCollision::getHeightFromGround(int _x,int _y,int _maxHeight)
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>=maxHeightToCheck)
@ -119,6 +117,49 @@ int CLayerCollision::getHeightFromGround(int _x,int _y,int _maxHeight)
}
/*****************************************************************************/
int CLayerCollision::getHeightFromCeiling(int _x,int _y,int _maxHeight)
{
int mapX,mapY,xFraction,yFraction;
int distanceFromCeiling;
int colHeight;
int maxHeightToCheck;
mapX=_x>>4;
mapY=(_y>>4)*MapWidth;
xFraction=_x&0x0f;
yFraction=16-(_y&0x0f);
distanceFromCeiling=0;
colHeight=s_collisionTable[((Map[mapX+mapY]&COLLISION_MASK)*16)+xFraction];
if(yFraction<colHeight)
{
// Inside a collision block and under the floor
distanceFromCeiling=colHeight-yFraction;
}
else
{
// Above the floor or not inside a collision block.. find the nearest ground above this point
distanceFromCeiling=_y&0x0f;
maxHeightToCheck=_maxHeight+16;
colHeight=0;
while(colHeight==0)
{
mapY-=MapWidth;
distanceFromCeiling+=16;
if(distanceFromCeiling>=maxHeightToCheck)
{
return _maxHeight;
}
colHeight=s_collisionTable[((Map[mapX+mapY]&COLLISION_MASK)*16)+xFraction];
}
distanceFromCeiling+=colHeight-16;
}
return distanceFromCeiling;
}
/*****************************************************************************/
int CLayerCollision::getCollisionType(int _x,int _y)
{
@ -152,26 +193,42 @@ int CLayerCollision::getCollisionType(int _x,int _y)
#ifdef __SHOW_COLLISION__
#include "gfx\prim.h"
#include "pad\pads.h"
#if defined (__USER_paul__) || (__USER_art__)
int showCollision=true;
typedef struct{int r,g,b;} colrgb;
const colrgb s_typeColours[]={
{90,90,90},
{90,0,0}, //damage
{0,90,0}, //slippery
{90,0,90}, //electric
{0,90,90}, //sticky
{0,0,90}, //water
};
typedef enum {SHOW_NONE,SHOW_OPAQUE,SHOW_SEMITRANS}ColShowType;
#if defined (__USER_paul__)
ColShowType showCollision=SHOW_OPAQUE;
#elif defined (__USER_art__)
ColShowType showCollision=SHOW_SEMITRANS;
#else
int showCollision=false;
ColShowType showCollision=SHOW_NONE;
#endif
void CLayerCollision::render(DVECTOR &MapPos)
{
if(PadGetDown(0)&PAD_TRIANGLE)
{
showCollision=!showCollision;
showCollision=(ColShowType)(showCollision+1);
if(showCollision>SHOW_SEMITRANS)showCollision=SHOW_NONE;
}
if(showCollision)
if(showCollision!=SHOW_NONE)
{
int semiTrans;
int x,y;
int mapx,mapy;
int xoff,yoff;
u8 *coll;
POLY_F4 *f4;
POLY_F3 *f3;
const colrgb *colour;
semiTrans=showCollision==SHOW_SEMITRANS;
xoff=MapPos.vx&15;
yoff=MapPos.vy&15;
mapx=MapPos.vx/16;
@ -181,6 +238,7 @@ void CLayerCollision::render(DVECTOR &MapPos)
coll=&Map[mapx+(mapy*MapWidth)];
for(x=-xoff;x<(33*16)-xoff;x+=16)
{
colour=&s_typeColours[((*coll)&COLLISION_TYPE_MASK)>>COLLISION_TYPE_FLAG_SHIFT];
switch((*coll)&COLLISION_MASK)
{
case 0:
@ -192,9 +250,9 @@ void CLayerCollision::render(DVECTOR &MapPos)
case 4:
f4=GetPrimF4();
setXYWH(f4,x,y,16,16);
setRGB0(f4,0,0,90);
setSemiTrans(f4,true);
AddPrimToList(f4,0);
setRGB0(f4,colour->r,colour->g,colour->b);
setSemiTrans(f4,semiTrans);
AddPrimToList(f4,11);
break;
case 5:
@ -202,9 +260,9 @@ void CLayerCollision::render(DVECTOR &MapPos)
setXY3(f3,x+16,y+16,
x,y+16,
x+16,y+8);
setRGB0(f3,0,0,90);
setSemiTrans(f3,true);
AddPrimToList(f3,0);
setRGB0(f3,colour->r,colour->g,colour->b);
setSemiTrans(f3,semiTrans);
AddPrimToList(f3,11);
break;
case 6:
@ -212,9 +270,9 @@ void CLayerCollision::render(DVECTOR &MapPos)
setXY3(f3,x,y+16,
x+16,y+16,
x,y+8);
setRGB0(f3,0,0,90);
setSemiTrans(f3,true);
AddPrimToList(f3,0);
setRGB0(f3,colour->r,colour->g,colour->b);
setSemiTrans(f3,semiTrans);
AddPrimToList(f3,11);
break;
case 9:
@ -223,9 +281,9 @@ void CLayerCollision::render(DVECTOR &MapPos)
x,y+8,
x+16,y+16,
x,y+16);
setRGB0(f4,0,0,90);
setSemiTrans(f4,true);
AddPrimToList(f4,0);
setRGB0(f4,colour->r,colour->g,colour->b);
setSemiTrans(f4,semiTrans);
AddPrimToList(f4,11);
break;
case 10:
@ -234,9 +292,9 @@ void CLayerCollision::render(DVECTOR &MapPos)
x+16,y+8,
x,y+16,
x+16,y+16);
setRGB0(f4,0,0,90);
setSemiTrans(f4,true);
AddPrimToList(f4,0);
setRGB0(f4,colour->r,colour->g,colour->b);
setSemiTrans(f4,semiTrans);
AddPrimToList(f4,11);
break;
case 13:
@ -244,9 +302,9 @@ void CLayerCollision::render(DVECTOR &MapPos)
setXY3(f3,x+16,y+16,
x,y+16,
x+16,y);
setRGB0(f3,0,0,90);
setSemiTrans(f3,true);
AddPrimToList(f3,0);
setRGB0(f3,colour->r,colour->g,colour->b);
setSemiTrans(f3,semiTrans);
AddPrimToList(f3,11);
break;
case 14:
@ -254,9 +312,9 @@ void CLayerCollision::render(DVECTOR &MapPos)
setXY3(f3,x,y+16,
x+16,y+16,
x,y);
setRGB0(f3,0,0,90);
setSemiTrans(f3,true);
AddPrimToList(f3,0);
setRGB0(f3,colour->r,colour->g,colour->b);
setSemiTrans(f3,semiTrans);
AddPrimToList(f3,11);
break;
case 15:
@ -264,9 +322,9 @@ void CLayerCollision::render(DVECTOR &MapPos)
setXY3(f3,x+16,y,
x,y,
x+16,y+16);
setRGB0(f3,0,0,90);
setSemiTrans(f3,true);
AddPrimToList(f3,0);
setRGB0(f3,colour->r,colour->g,colour->b);
setSemiTrans(f3,semiTrans);
AddPrimToList(f3,11);
break;
case 16:
@ -274,17 +332,17 @@ void CLayerCollision::render(DVECTOR &MapPos)
setXY3(f3,x,y,
x+16,y,
x,y+16);
setRGB0(f3,0,0,90);
setSemiTrans(f3,true);
AddPrimToList(f3,0);
setRGB0(f3,colour->r,colour->g,colour->b);
setSemiTrans(f3,semiTrans);
AddPrimToList(f3,11);
break;
default:
f4=GetPrimF4();
setXYWH(f4,x,y,16,16);
setRGB0(f4,200,0,0);
setSemiTrans(f4,true);
AddPrimToList(f4,0);
setRGB0(f4,255,0,0);
setSemiTrans(f4,semiTrans);
AddPrimToList(f4,11);
break;
}
coll++;

1
source/level/layercollision.h
View file

@ -24,6 +24,7 @@ virtual void shutdown();
u8 Get(int X,int Y) {return(Map[X+(Y*MapWidth)]&COLLISION_MASK);}
int getHeightFromGround(int _x,int _y,int _maxHeight=32);
int getHeightFromCeiling(int _x,int _y,int _maxHeight=32);
int getCollisionType(int _x,int _y);
#ifdef __SHOW_COLLISION__