ref: 2c25717e993049085ce20d1793e5474f6594c4f3
dir: /Engine/src/tiles.c/
//
// tiles.c
// Duke3D
//
// Created by fabien sanglard on 12-12-22.
// Copyright (c) 2012 fabien sanglard. All rights reserved.
//
#include <stdlib.h>
#include <string.h>
#include "tiles.h"
#include "engine.h"
#include "draw.h"
#include "filesystem.h"
char artfilename[20];
tile_t tiles[MAXTILES];
int32_t numTiles;
int32_t artversion;
uint8_t *pic = NULL;
uint8_t gotpic[(MAXTILES+7)>>3];
void setviewtotile(short tilenume, int32_t tileWidth, int32_t tileHeight)
{
int32_t i, j;
/* DRAWROOMS TO TILE BACKUP&SET CODE */
tiles[tilenume].dim.width = tileWidth;
tiles[tilenume].dim.height = tileHeight;
bakxsiz[setviewcnt] = tileWidth;
bakysiz[setviewcnt] = tileHeight;
bakvidoption[setviewcnt] = vidoption;
vidoption = 2;
bakframeplace[setviewcnt] = frameplace;
frameplace = tiles[tilenume].data;
bakwindowx1[setviewcnt] = windowx1;
bakwindowy1[setviewcnt] = windowy1;
bakwindowx2[setviewcnt] = windowx2;
bakwindowy2[setviewcnt] = windowy2;
copybufbyte(&startumost[windowx1],&bakumost[windowx1],(windowx2-windowx1+1)*sizeof(bakumost[0]));
copybufbyte(&startdmost[windowx1],&bakdmost[windowx1],(windowx2-windowx1+1)*sizeof(bakdmost[0]));
setview(0,0,tileHeight-1,tileWidth-1);
setaspect(65536,65536);
j = 0;
for(i=0; i<=tileWidth; i++) {
ylookup[i] = j;
j += tileHeight;
}
setBytesPerLine(tileHeight);
setviewcnt++;
}
void squarerotatetile(short tilenume)
{
int32_t i, j, k;
uint8_t *ptr1, *ptr2;
dimensions_t tileDim;
tileDim.width = tiles[tilenume].dim.width;
tileDim.height = tiles[tilenume].dim.height;
/* supports square tiles only for rotation part */
if (tileDim.width == tileDim.height)
{
k = (tileDim.width<<1);
for(i=tileDim.width-1; i>=0; i--)
{
ptr1 = tiles[tilenume].data+i*(tileDim.width+1);
ptr2 = ptr1;
if ((i&1) != 0) {
ptr1--;
ptr2 -= tileDim.width;
swapchar(ptr1,ptr2);
}
for(j=(i>>1)-1; j>=0; j--)
{
ptr1 -= 2;
ptr2 -= k;
swapchar2(ptr1,ptr2,tileDim.width);
}
}
}
}
//1. Lock a picture in the cache system.
//2. Mark it as used in the bitvector tracker.
void setgotpic(int32_t tilenume)
{
if (tiles[tilenume].lock < 200)
tiles[tilenume].lock = 199;
gotpic[tilenume>>3] |= pow2char[tilenume&7];
}
void loadtile(short tilenume)
{
uint8_t *ptr;
int32_t i, tileFilesize;
if ((uint32_t)tilenume >= (uint32_t)MAXTILES)
return;
tileFilesize = tiles[tilenume].dim.width * tiles[tilenume].dim.height;
if (tileFilesize <= 0)
return;
i = tilefilenum[tilenume];
if (i != artfilnum){
if (artfil != -1)
kclose(artfil);
artfilnum = i;
artfilplc = 0L;
artfilename[7] = (i%10)+48;
artfilename[6] = ((i/10)%10)+48;
artfilename[5] = ((i/100)%10)+48;
artfil = TCkopen4load(artfilename,0);
if (artfil == -1){
printf("Error, unable to load artfile:'%s'.\n",artfilename);
getchar();
exit(0);
}
faketimerhandler();
}
if (tiles[tilenume].data == NULL){
tiles[tilenume].lock = 199;
allocache(&tiles[tilenume].data,tileFilesize,(uint8_t *) &tiles[tilenume].lock);
}
if (artfilplc != tilefileoffs[tilenume])
{
klseek(artfil,tilefileoffs[tilenume]-artfilplc,SEEK_CUR);
faketimerhandler();
}
ptr = tiles[tilenume].data;
kread(artfil,ptr,tileFilesize);
faketimerhandler();
artfilplc = tilefileoffs[tilenume]+tileFilesize;
}
uint8_t* allocatepermanenttile(short tilenume, int32_t width, int32_t height)
{
int32_t j;
uint32_t tileDataSize;
//Check dimensions are correct.
if ((width <= 0) || (height <= 0) || ((uint32_t)tilenume >= (uint32_t)MAXTILES))
return(0);
tileDataSize = width * height;
tiles[tilenume].lock = 255;
allocache(&tiles[tilenume].data,tileDataSize,(uint8_t *) &tiles[tilenume].lock);
tiles[tilenume].dim.width = width;
tiles[tilenume].dim.height = height;
tiles[tilenume].animFlags = 0;
j = 15;
while ((j > 1) && (pow2long[j] > width))
j--;
picsiz[tilenume] = ((uint8_t )j);
j = 15;
while ((j > 1) && (pow2long[j] > height))
j--;
picsiz[tilenume] += ((uint8_t )(j<<4));
return(tiles[tilenume].data);
}
int loadpics(char *filename, char * gamedir)
{
int32_t offscount, localtilestart, localtileend, dasiz;
short fil, i, j, k;
strcpy(artfilename,filename);
for(i=0; i<MAXTILES; i++)
{
tiles[i].dim.width = 0;
tiles[i].dim.height = 0;
tiles[i].animFlags = 0L;
}
artsize = 0L;
numtilefiles = 0;
do
{
k = numtilefiles;
artfilename[7] = (k%10)+48;
artfilename[6] = ((k/10)%10)+48;
artfilename[5] = ((k/100)%10)+48;
if ((fil = TCkopen4load(artfilename,0)) != -1)
{
kread32(fil,&artversion);
if (artversion != 1) return(-1);
kread32(fil,&numTiles);
kread32(fil,&localtilestart);
kread32(fil,&localtileend);
/*kread(fil,&tilesizx[localtilestart],(localtileend-localtilestart+1)<<1);*/
for (i = localtilestart; i <= localtileend; i++)
kread16(fil,&tiles[i].dim.width);
/*kread(fil,&tilesizy[localtilestart],(localtileend-localtilestart+1)<<1);*/
for (i = localtilestart; i <= localtileend; i++)
kread16(fil,&tiles[i].dim.height);
/*kread(fil,&picanm[localtilestart],(localtileend-localtilestart+1)<<2);*/
for (i = localtilestart; i <= localtileend; i++)
kread32(fil,&tiles[i].animFlags);
offscount = 4+4+4+4+((localtileend-localtilestart+1)<<3);
for(i=localtilestart; i<=localtileend; i++)
{
tilefilenum[i] = k;
tilefileoffs[i] = offscount;
dasiz = tiles[i].dim.width*tiles[i].dim.height;
offscount += dasiz;
artsize += ((dasiz+15)&0xfffffff0);
}
kclose(fil);
numtilefiles++;
}
}
while (k != numtilefiles);
printf("Art files loaded\n");
clearbuf(gotpic,(MAXTILES+31)>>5,0L);
/* try dpmi_DETERMINEMAXREALALLOC! */
cachesize = max(artsize,1048576);
while ((pic = (uint8_t *)malloc(cachesize)) == NULL)
{
cachesize -= 65536L;
if (cachesize < 65536) return(-1);
}
initcache(pic,cachesize);
for(i=0; i<MAXTILES; i++)
{
j = 15;
while ((j > 1) && (pow2long[j] > tiles[i].dim.width))
j--;
picsiz[i] = ((uint8_t )j);
j = 15;
while ((j > 1) && (pow2long[j] > tiles[i].dim.height))
j--;
picsiz[i] += ((uint8_t )(j<<4));
}
artfil = -1;
artfilnum = -1;
artfilplc = 0L;
return(0);
}
void TILE_MakeAvailable(short picID){
if (tiles[picID].data == NULL)
loadtile(picID);
}
void copytilepiece(int32_t tilenume1, int32_t sx1, int32_t sy1, int32_t xsiz, int32_t ysiz,
int32_t tilenume2, int32_t sx2, int32_t sy2)
{
uint8_t *ptr1, *ptr2, dat;
int32_t xsiz1, ysiz1, xsiz2, ysiz2, i, j, x1, y1, x2, y2;
xsiz1 = tiles[tilenume1].dim.width;
ysiz1 = tiles[tilenume1].dim.height;
xsiz2 = tiles[tilenume2].dim.width;
ysiz2 = tiles[tilenume2].dim.height;
if ((xsiz1 > 0) && (ysiz1 > 0) && (xsiz2 > 0) && (ysiz2 > 0))
{
TILE_MakeAvailable(tilenume1);
TILE_MakeAvailable(tilenume2);
x1 = sx1;
for(i=0; i<xsiz; i++)
{
y1 = sy1;
for(j=0; j<ysiz; j++)
{
x2 = sx2+i;
y2 = sy2+j;
if ((x2 >= 0) && (y2 >= 0) && (x2 < xsiz2) && (y2 < ysiz2))
{
ptr1 = tiles[tilenume1].data + x1*ysiz1 + y1;
ptr2 = tiles[tilenume2].data + x2*ysiz2 + y2;
dat = *ptr1;
if (dat != 255)
*ptr2 = *ptr1;
}
y1++;
if (y1 >= ysiz1) y1 = 0;
}
x1++;
if (x1 >= xsiz1) x1 = 0;
}
}
}
/*
FCS: If a texture is animated, this will return the offset to add to tilenum
in order to retrieve the texture to display.
*/
int animateoffs(int16_t tilenum)
{
int32_t i, k, offs;
offs = 0;
i = (totalclocklock>>((tiles[tilenum].animFlags>>24)&15));
if ((tiles[tilenum].animFlags&63) > 0){
switch(tiles[tilenum].animFlags&192)
{
case 64:
k = (i%((tiles[tilenum].animFlags&63)<<1));
if (k < (tiles[tilenum].animFlags&63))
offs = k;
else
offs = (((tiles[tilenum].animFlags&63)<<1)-k);
break;
case 128:
offs = (i%((tiles[tilenum].animFlags&63)+1));
break;
case 192:
offs = -(i%((tiles[tilenum].animFlags&63)+1));
}
}
return(offs);
}