ref: 9a51b83c8dd3442fcc77148de3aa3d0fd70fe444
dir: dporg/fs.c
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <draw.h>
#include "dat.h"
#include "fns.h"
s32int sintab[256];
char **basestr;
int nfontmap;
uchar *fontmap;
int nglyph;
Pic *dfont;
int nwalls;
Wall *walls;
int nsprites;
Sprite *sprites;
static Biobuf *
eopen(char *s, int mode)
{
Biobuf *bf;
if((bf = Bopen(s, mode)) == nil)
sysfatal("Bopen: %r");
Blethal(bf, nil);
return bf;
}
static long
eread(Biobuf *bf, void *buf, long n)
{
if(Bread(bf, buf, n) != n)
sysfatal("ebread: short read: %r");
return n;
}
static vlong
bsize(Biobuf *bf)
{
vlong n;
Dir *d;
d = dirfstat(Bfildes(bf));
if(d == nil)
sysfatal("bstat: %r");
n = d->length;
free(d);
return n;
}
static u8int
get8(Biobuf *bf)
{
u8int v;
eread(bf, &v, 1);
return v;
}
static u16int
get16(Biobuf *bf)
{
u16int v;
v = get8(bf);
return v | get8(bf) << 8;
}
static u32int
get24(Biobuf *bf)
{
u32int v;
v = get16(bf);
return v | get8(bf) << 16;
}
static u32int
get32(Biobuf *bf)
{
u32int v;
v = get16(bf);
return v | get16(bf) << 16;
}
static void
loadpic(char *name, Pic *pic)
{
int fd, n, m, dx, dy;
uchar *b, *s;
u32int *p;
Image *i;
if((fd = open(name, OREAD)) < 0)
sysfatal("loadpic: %r");
if((i = readimage(display, fd, 0)) == nil)
sysfatal("readimage: %r");
close(fd);
if(i->chan != RGBA32)
sysfatal("loadpic %s: inappropriate image format", name);
dx = Dx(i->r);
dy = Dy(i->r);
n = dx * dy;
if(dx * dy > Vw * Vfullh)
sysfatal("loadpic %s: inappropriate image size", name);
p = emalloc(n * sizeof *p);
pic->p = p;
pic->w = dx;
pic->h = dy;
m = i->depth / 8;
b = emalloc(n * m);
unloadimage(i, i->r, b, n * m);
freeimage(i);
s = b;
while(n-- > 0){
*p++ = s[0] << 24 | s[3] << 16 | s[2] << 8 | s[1];
s += m;
}
free(b);
}
static void
loadfont(void)
{
int i, n, nx, ny;
u32int *d, *s;
Pic pic, *pp;
loadpic("a.bit", &pic);
nx = pic.w / Vfntpicw;
ny = pic.h / Vfnth;
if(pic.w % nx != 0 || pic.h % ny != 0)
sysfatal("loadfont: invalid font pic");
nglyph = nx * ny;
dfont = emalloc(nglyph * sizeof *dfont);
for(i=0, pp=dfont; pp<dfont+nglyph; pp++, i++){
pp->w = Vfntw;
pp->h = Vfnth;
pp->p = emalloc(pp->w * pp->h * sizeof *pp->p);
d = pp->p;
s = pic.p + i / nx * pic.w * pp->h + i % nx * Vfntpicw + Vfntspc;
for(n=0; n<pp->h; n++){
memcpy(d, s, pp->w * sizeof *d);
d += pp->w;
s += pic.w;
}
}
free(pic.p);
}
void
loadpics(void)
{
loadpic("b.bit", pics + PCarrow);
loadpic("c.bit", pics + PCspace);
loadpic("d.bit", pics + PCgrid);
loadpic("e.bit", pics + PCplanets);
loadpic("f.bit", pics + PCship);
loadpic("k.bit", pics + PChud);
loadpic("l.bit", pics + PCface);
loadpic("m.bit", pics + PCammo);
loadpic("n.bit", pics + PChit);
loadpic("o.bit", pics + PCdir);
loadpic("p.bit", pics + PCcur);
loadpic("q.bit", pics + PCscroll);
loadpic("r.bit", pics + PCgibs);
loadfont();
canvas.p = emalloc(Vw * Vfullh * sizeof *canvas.p);
canvas.w = Vw;
canvas.h = Vfullh;
}
static void
loadpal(void)
{
int n;
u8int r, g, b;
u32int *p;
Biobuf *bf;
bf = eopen("palettes.bin", OREAD);
npal = get32(bf) / 2;
pal = emalloc(npal * sizeof *pal);
for(p=pal; p<pal+npal; p++){
n = get16(bf);
r = n & 0x1f;
r = r << 3 | r >> 2;
g = n >> 5 & 0x3f;
g = g << 2 | g >> 4;
b = n >> 11 & 0x1f;
b = b << 3 | b >> 2;
*p = 0xff << 24 | r << 16 | g << 8 | b;
}
Bterm(bf);
}
static char **
loadstr(char *name, int *nel)
{
int n;
char **s, **p, **e, *q;
Biobuf *bf;
bf = eopen(name, OREAD);
n = get16(bf);
s = emalloc(n * sizeof *p);
e = s + n;
*nel = n;
for(p=s; p<e; p++){
n = get16(bf);
*p = emalloc(n + 1);
eread(bf, *p, n);
/* FIXME: not always? */
q = *p;
while((q = strchr(q, '|')) != nil)
*q = '\n';
}
Bterm(bf);
return s;
}
static void
unpackspr(Sprite *s, Biobuf *btex, Biobuf *bshp)
{
int n, B, b, i, v;
u32int *p;
v = -1;
for(i=0; i<s->w; i++){
p = s->p + i;
n = s->h;
while(n > 0){
B = n > 8 ? 8 : n;
n -= B;
b = get8(bshp);
while(B > 0){
if(b & 1){
if(v >= 0){
*p = v & 15;
v = -1;
}else{
v = get8(btex);
*p = v & 15;
v >>= 4;
}
}else
*p = -1;
p += s->w;
b >>= 1;
B--;
}
}
}
}
static void
dumpbwwalls(Wall *wbuf, int nbuf)
{
int n, fd;
char name[32], c[9];
Wall *w;
for(w=wbuf; w<wbuf+nbuf; w++){
snprint(name, sizeof name, "wall%02zd.bit", w-walls);
if((fd = create(name, OWRITE, 0644)) < 0)
sysfatal("dumpbwwalls: %r");
fprint(fd, "%11s %11d %11d %11d %11d ",
chantostr(c, GREY8), 0, 0, Wallsz, Wallsz);
for(n=0; n<nelem(w->p); n++){
c[0] = w->p[n] & 0xff;
write(fd, c, 1);
}
close(fd);
}
}
static void
dumpbwspr(Sprite *sbuf, int nbuf)
{
int n, fd;
char name[32], c[9];
Sprite *s;
for(s=sbuf; s<sbuf+nbuf; s++){
snprint(name, sizeof name, "spr%02zd.bit", s-sbuf);
if((fd = create(name, OWRITE, 0644)) < 0)
sysfatal("dumpbwspr: %r");
fprint(fd, "%11s %11d %11d %11d %11d ",
chantostr(c, GREY8), 0, 0, s->w, s->h);
for(n=0; n<s->w*s->h; n++){
c[0] = 96 * (s->p[n] & 0xff) / 16;
write(fd, c, 1);
}
close(fd);
}
}
static void
dumpspr(Sprite *sbuf, int nbuf)
{
int fd;
char name[32], c[9];
Sprite *s;
for(s=sbuf; s<sbuf+nbuf; s++){
snprint(name, sizeof name, "spr%02zd.bit", s-sbuf);
if((fd = create(name, OWRITE, 0644)) < 0)
sysfatal("dumpspr: %r");
fprint(fd, "%11s %11d %11d %11d %11d ",
chantostr(c, ARGB32), 0, 0, s->w, s->h);
write(fd, s->p, s->w * s->h * sizeof *s->p);
close(fd);
}
}
static void
dumppal(void)
{
int fd;
char name[32], c[9];
snprint(name, sizeof name, "pal.bit");
if((fd = create(name, OWRITE, 0644)) < 0)
sysfatal("dumppal: %r");
fprint(fd, "%11s %11d %11d %11d %11d ", chantostr(c, ARGB32), 0, 0, 16, npal/16);
write(fd, pal, npal * sizeof *pal);
close(fd);
}
static int
loadblankspr(Sprite **sbuf, int *nsbuf, int **shpofs)
{
int nbuf, nspan, spansz, bshpsz, bsize, ofs, *ofsbuf, *o;
Biobuf *btex, *bshp;
Sprite *s, *buf;
btex = eopen("stexels.bin", OREAD);
get32(btex);
bshp = eopen("bitshapes.bin", OREAD);
bshpsz = get32(bshp);
nbuf = 0;
buf = nil;
s = nil;
ofsbuf = nil;
o = nil;
ofs = 0;
while(bshpsz > 0){
if(s >= buf + nbuf){
buf = erealloc(buf, (nbuf+32) * sizeof *buf,
nbuf * sizeof *buf);
ofsbuf = erealloc(ofsbuf, (nbuf+32) * sizeof *ofsbuf,
nbuf * sizeof *ofsbuf);
s = buf + nbuf;
o = ofsbuf + nbuf;
nbuf += 32;
}
get16(bshp);
get16(bshp);
bsize = get16(bshp) + 8;
get16(bshp);
s->r.min.x = get8(bshp);
s->r.max.x = get8(bshp);
s->r.min.y = get8(bshp);
s->r.max.y = get8(bshp);
nspan = Dx(s->r) + 1;
spansz = Dy(s->r) + 1;
s->w = nspan;
s->h = spansz;
s->p = emalloc(s->w * s->h * sizeof *s->p);
unpackspr(s, btex, bshp);
s++;
*o++ = ofs;
ofs += bsize;
bshpsz -= bsize;
}
if(bshpsz != 0){
werrstr("sprite data and shape mismatch by %d bytes", bshpsz);
return -1;
}
*sbuf = buf;
*nsbuf = s - buf;
*shpofs = ofsbuf;
Bterm(btex);
Bterm(bshp);
return 0;
}
static int
gencolorspr(Sprite *sbuf, int nbuf, int *shpofs)
{
int *shp;
u32int n, ofs, palofs, *pp, *bp, *p;
Biobuf *bf;
Sprite *s, *bw;
bf = eopen("mappings.bin", OREAD);
ofs = get32(bf) * 2 * sizeof(u32int);
n = get32(bf);
get32(bf);
get32(bf);
Bseek(bf, ofs, 1);
sprites = emalloc(n * sizeof *sprites);
nsprites = n;
for(s=sprites; s<sprites+nsprites; s++){
ofs = get32(bf);
palofs = get32(bf);
if(palofs >= npal){
werrstr("gencolorspr: invalid palette index %ud", palofs);
return -1;
}
for(shp=shpofs; shp<shpofs+nbuf; shp++)
if(*shp == ofs)
break;
if(shp >= shpofs+nbuf){
werrstr("gencolorspr: invalid bitshapes offset %ud", ofs);
return -1;
}
bw = sbuf + (shp - shpofs);
pp = pal + palofs;
memcpy(s, bw, sizeof *s);
s->p = emalloc(s->w * s->h * sizeof *s->p);
for(p=s->p, bp=bw->p; p<s->p+s->w*s->h; p++, bp++){
n = *bp;
if(n == -1UL)
*p = 0;
else if(n > Npalcol){
werrstr("gencolor: invalid palette color index %ud", n);
return -1;
}else
*p = pp[n];
}
}
Bterm(bf);
return 0;
}
static void
loadsprites(void)
{
int nbuf, *shpofs;
Sprite *sbuf, *s;
sbuf = nil;
nbuf = 0;
shpofs = nil;
if(loadblankspr(&sbuf, &nbuf, &shpofs) < 0
|| gencolorspr(sbuf, nbuf, shpofs) < 0)
sysfatal("loadsprites: %r");
for(s=sbuf; s<sbuf+nbuf; s++)
free(s->p);
free(sbuf);
free(shpofs);
}
static void
loadwalls(void)
{
int i, j, n, v;
Biobuf *bf;
Wall *w, *we;
u32int *p;
bf = eopen("wtexels.bin", OREAD);
n = get32(bf) / (Wallsz * Wtexelsz);
walls = emalloc(n * sizeof *walls);
nwalls = n;
for(w=walls, we=w+n; w<we; w++){
for(i=0; i<Wallsz; i++){
p = w->p + i;
for(j=0; j<Wtexelsz; j++){
v = get8(bf);
*p = v & 15;
p += Wallsz;
*p = v >> 4 & 15;
p += Wallsz;
}
}
}
Bterm(bf);
}
static void
loadfontmap(void)
{
int n;
Biobuf *bf;
bf = eopen("a.map", OREAD);
n = bsize(bf);
fontmap = emalloc(n * sizeof *fontmap);
eread(bf, fontmap, n);
nfontmap = n;
Bterm(bf);
}
static void
loadbasestr(void)
{
int nel;
basestr = loadstr("base.str", &nel);
if(nel != BSend)
sysfatal("loadbasestr: inconsistent base.str file: entries %d not %d", nel, BSend);
}
static void
loadsintab(void)
{
Biobuf *bf;
s32int *s;
bf = eopen("sintable.bin", OREAD);
for(s=sintab; s<sintab+nelem(sintab); s++)
*s = get32(bf);
Bterm(bf);
}
void
initfs(void)
{
rfork(RFNAMEG);
if(bind(".", prefix, MBEFORE|MCREATE) == -1 || chdir(prefix) < 0)
fprint(2, "initfs: %r\n");
loadsintab();
loadpal();
loadbasestr();
loadfontmap();
loadwalls();
loadsprites();
}