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|
// worldio.cpp: loading & saving of maps and savegames
#include "cube.h"
void
void backup(char *name, char *backupname)
remove(backupname);
rename(name, backupname);
string cgzname, bakname, pcfname, mcfname;
string cgzname, bakname, pcfname, mcfname;
void
void setnames(char *name)
string pakname, mapname;
char *slash = strpbrk(name, "/\\");
if(slash)
{
strn0cpy(pakname, name, slash-name+1);
strcpy_s(mapname, slash+1);
}
else
{
strcpy_s(pakname, "base");
strcpy_s(mapname, name);
};
sprintf_s(cgzname)("packages/%s/%s.cgz", pakname, mapname);
sprintf_s(bakname)("packages/%s/%s_%d.BAK", pakname, mapname, lastmillis);
sprintf_s(pcfname)("packages/%s/package.cfg", pakname);
sprintf_s(mcfname)("packages/%s/%s.cfg", pakname, mapname);
path(cgzname);
path(bakname);
// the optimize routines below are here to reduce the detrimental effects of messy mapping by
// setting certain properties (vdeltas and textures) to neighbouring values wherever there is no
// visible difference. This allows the mipmapper to generate more efficient mips.
// the reason it is done on save is to reduce the amount spend in the mipmapper (as that is done
// in realtime).
inline bool nhf(sqr *s) { return s->type!=FHF && s->type!=CHF; };
// the optimize routines below are here to reduce the detrimental effects of
// messy mapping by setting certain properties (vdeltas and textures) to
// neighbouring values wherever there is no visible difference. This allows the
// mipmapper to generate more efficient mips. the reason it is done on save is
// to reduce the amount spend in the mipmapper (as that is done in realtime).
inline bool
nhf(sqr *s)
{
return s->type != FHF && s->type != CHF;
};
void
void voptimize() // reset vdeltas on non-hf cubes
voptimize() // reset vdeltas on non-hf cubes
{
loop(x, ssize) loop(y, ssize)
{
sqr *s = S(x, y);
if(x && y) { if(nhf(s) && nhf(S(x-1, y)) && nhf(S(x-1, y-1)) && nhf(S(x, y-1))) s->vdelta = 0; }
else s->vdelta = 0;
};
void topt(sqr *s, bool &wf, bool &uf, int &wt, int &ut)
sqr *o[4];
o[0] = SWS(s,0,-1,ssize);
o[1] = SWS(s,0,1,ssize);
o[2] = SWS(s,1,0,ssize);
o[3] = SWS(s,-1,0,ssize);
wf = true;
uf = true;
if(SOLID(s))
{
loopi(4) if(!SOLID(o[i]))
{
wf = false;
wt = s->wtex;
ut = s->utex;
return;
};
}
else
{
loopi(4) if(!SOLID(o[i]))
{
if(o[i]->floor<s->floor) { wt = s->wtex; wf = false; };
if(o[i]->ceil>s->ceil) { ut = s->utex; uf = false; };
};
};
};
void toptimize() // FIXME: only does 2x2, make atleast for 4x4 also
bool wf[4], uf[4];
sqr *s[4];
for(int x = 2; x<ssize-4; x += 2) for(int y = 2; y<ssize-4; y += 2)
{
s[0] = S(x,y);
int wt = s[0]->wtex, ut = s[0]->utex;
topt(s[0], wf[0], uf[0], wt, ut);
topt(s[1] = SWS(s[0],0,1,ssize), wf[1], uf[1], wt, ut);
topt(s[2] = SWS(s[0],1,1,ssize), wf[2], uf[2], wt, ut);
topt(s[3] = SWS(s[0],1,0,ssize), wf[3], uf[3], wt, ut);
loopi(4)
{
if(wf[i]) s[i]->wtex = wt;
if(uf[i]) s[i]->utex = ut;
};
};
// these two are used by getmap/sendmap.. transfers compressed maps directly
// these two are used by getmap/sendmap.. transfers compressed maps directly
void
void writemap(char *mname, int msize, uchar *mdata)
setnames(mname);
backup(cgzname, bakname);
FILE *f = fopen(cgzname, "wb");
if(!f) { conoutf("could not write map to %s", cgzname); return; };
fwrite(mdata, 1, msize, f);
fclose(f);
conoutf("wrote map %s as file %s", mname, cgzname);
uchar *readmap(char *mname, int *msize)
setnames(mname);
uchar *mdata = (uchar *)loadfile(cgzname, msize);
if(!mdata) { conoutf("could not read map %s", cgzname); return NULL; };
return mdata;
// save map as .cgz file. uses 2 layers of compression: first does simple run-length
// encoding and leaves out data for certain kinds of cubes, then zlib removes the
// last bits of redundancy. Both passes contribute greatly to the miniscule map sizes.
// save map as .cgz file. uses 2 layers of compression: first does simple
// run-length encoding and leaves out data for certain kinds of cubes, then zlib
// removes the last bits of redundancy. Both passes contribute greatly to the
// miniscule map sizes.
void
void save_world(char *mname)
resettagareas(); // wouldn't be able to reproduce tagged areas otherwise
voptimize();
toptimize();
if(!*mname) mname = getclientmap();
setnames(mname);
backup(cgzname, bakname);
gzFile f = gzopen(cgzname, "wb9");
if(!f) { conoutf("could not write map to %s", cgzname); return; };
hdr.version = MAPVERSION;
hdr.numents = 0;
loopv(ents) if(ents[i].type!=NOTUSED) hdr.numents++;
header tmp = hdr;
endianswap(&tmp.version, sizeof(int), 4);
endianswap(&tmp.waterlevel, sizeof(int), 16);
gzwrite(f, &tmp, sizeof(header));
loopv(ents)
{
if(ents[i].type!=NOTUSED)
{
entity tmp = ents[i];
endianswap(&tmp, sizeof(short), 4);
gzwrite(f, &tmp, sizeof(persistent_entity));
};
};
sqr *t = NULL;
int sc = 0;
#define spurge while(sc) { gzputc(f, 255); if(sc>255) { gzputc(f, 255); sc -= 255; } else { gzputc(f, sc); sc = 0; } };
loopk(cubicsize)
{
sqr *s = &world[k];
#define c(f) (s->f==t->f)
// 4 types of blocks, to compress a bit:
// 255 (2): same as previous block + count
// 254 (3): same as previous, except light // deprecated
// SOLID (5)
// anything else (9)
if(SOLID(s))
{
if(t && c(type) && c(wtex) && c(vdelta))
{
sc++;
}
else
{
spurge;
gzputc(f, s->type);
gzputc(f, s->wtex);
gzputc(f, s->vdelta);
};
}
else
{
if(t && c(type) && c(floor) && c(ceil) && c(ctex) && c(ftex) && c(utex) && c(wtex) && c(vdelta) && c(tag))
{
sc++;
}
else
{
spurge;
gzputc(f, s->type);
gzputc(f, s->floor);
gzputc(f, s->ceil);
gzputc(f, s->wtex);
gzputc(f, s->ftex);
gzputc(f, s->ctex);
gzputc(f, s->vdelta);
gzputc(f, s->utex);
gzputc(f, s->tag);
};
};
t = s;
};
spurge;
gzclose(f);
conoutf("wrote map file %s", cgzname);
settagareas();
void load_world(char *mname) // still supports all map formats that have existed since the earliest cube betas!
stopifrecording();
cleardlights();
pruneundos();
setnames(mname);
gzFile f = gzopen(cgzname, "rb9");
if(!f) { conoutf("could not read map %s", cgzname); return; };
gzread(f, &hdr, sizeof(header)-sizeof(int)*16);
endianswap(&hdr.version, sizeof(int), 4);
if(strncmp(hdr.head, "CUBE", 4)!=0) fatal("while reading map: header malformatted");
if(hdr.version>MAPVERSION) fatal("this map requires a newer version of cube");
if(sfactor<SMALLEST_FACTOR || sfactor>LARGEST_FACTOR) fatal("illegal map size");
if(hdr.version>=4)
{
gzread(f, &hdr.waterlevel, sizeof(int)*16);
endianswap(&hdr.waterlevel, sizeof(int), 16);
}
else
{
hdr.waterlevel = -100000;
};
ents.setsize(0);
loopi(hdr.numents)
{
entity &e = ents.add();
gzread(f, &e, sizeof(persistent_entity));
endianswap(&e, sizeof(short), 4);
e.spawned = false;
if(e.type==LIGHT)
{
if(!e.attr2) e.attr2 = 255; // needed for MAPVERSION<=2
if(e.attr1>32) e.attr1 = 32; // 12_03 and below
};
};
free(world);
setupworld(hdr.sfactor);
sqr *t = NULL;
loopk(cubicsize)
{
sqr *s = &world[k];
int type = gzgetc(f);
switch(type)
{
case 255:
{
int n = gzgetc(f);
for(int i = 0; i<n; i++, k++) memcpy(&world[k], t, sizeof(sqr));
k--;
break;
};
case 254: // only in MAPVERSION<=2
{
memcpy(s, t, sizeof(sqr));
s->r = s->g = s->b = gzgetc(f);
gzgetc(f);
break;
};
case SOLID:
{
s->type = SOLID;
s->wtex = gzgetc(f);
s->vdelta = gzgetc(f);
if(hdr.version<=2) { gzgetc(f); gzgetc(f); };
s->ftex = DEFAULT_FLOOR;
s->ctex = DEFAULT_CEIL;
s->utex = s->wtex;
s->tag = 0;
s->floor = 0;
s->ceil = 16;
break;
};
default:
{
if(type<0 || type>=MAXTYPE)
{
sprintf_sd(t)("%d @ %d", type, k);
fatal("while reading map: type out of range: ", t);
};
s->type = type;
s->floor = gzgetc(f);
s->ceil = gzgetc(f);
if(s->floor>=s->ceil) s->floor = s->ceil-1; // for pre 12_13
s->wtex = gzgetc(f);
s->ftex = gzgetc(f);
s->ctex = gzgetc(f);
if(hdr.version<=2) { gzgetc(f); gzgetc(f); };
s->vdelta = gzgetc(f);
s->utex = (hdr.version>=2) ? gzgetc(f) : s->wtex;
s->tag = (hdr.version>=5) ? gzgetc(f) : 0;
s->type = type;
};
};
s->defer = 0;
t = s;
texuse[s->wtex] = 1;
if(!SOLID(s)) texuse[s->utex] = texuse[s->ftex] = texuse[s->ctex] = 1;
};
gzclose(f);
calclight();
settagareas();
int xs, ys;
loopi(256) if(texuse) lookuptexture(i, xs, ys);
conoutf("read map %s (%d milliseconds)", cgzname, SDL_GetTicks()-lastmillis);
conoutf("%s", hdr.maptitle);
startmap(mname);
loopl(256)
{
sprintf_sd(aliasname)("level_trigger_%d", l); // can this be done smarter?
if(identexists(aliasname)) alias(aliasname, "");
};
execfile("data/default_map_settings.cfg");
execfile(pcfname);
execfile(mcfname);
|