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games/doom: implement filelength() (thanks quux)

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this function is used when playing demos from external lumps. the game just
exits without this patch.
to test this, download a demo lump from somewhere, and play it with -playdemo %s
where %s is the file's name, without the .lmp extension:

(note that this one is a doom 2 demo, so it requires doom2.wad)
% hget http://doomedsda.us/lmps/945/3/30nm2939.zip | unzip -sv
extracting 30nm2939.LMP
extracting 30nm2939.txt
% mv 30nm2939.LMP 30nm2939.lmp	# checking for a lump filename is case sensitive
% games/doom -playdemo 30nm2939

the game exits when the demo ends. also, note that this demo will desync on
map06 (the crusher), because of an unrelated bug (that's another patch :>)

note: filelength() returns vlong, but file lengths for doom lumps are ints.
however, this might be used elsewhere (networking), so i'd leave it this way.
This commit is contained in:
cinap_lenrek 2015-07-29 14:51:00 +02:00
parent c4ae1a7435
commit fdb1698791
1 changed files with 10 additions and 11 deletions
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21
sys/src/games/doom/w_wad.c
View file

@ -64,19 +64,18 @@ void strupr (char* s)
while (*s) { *s = toupper(*s); s++; }
}
int filelength (int handle)
vlong
filelength(int fd)
{
USED(handle);
I_Error ("PORTME w_wad.c filelength");
return -1;
/*
struct stat fileinfo;
if (fstat (handle,&fileinfo) == -1)
I_Error ("Error fstating");
vlong l;
Dir *d;
return fileinfo.st_size;
*/
d = dirfstat(fd);
if(d == nil)
sysfatal("dirfstat: %r");
l = d->length;
free(d);
return l; /* lump file lenghts in doom are ints */
}