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(svn r551) -newgrf: Preliminary support for TTDPatch flags checking (we just pretend that a bunch of things are on and the rest is off and that's it). Patch by octo, small cleanup by pasky.

This commit is contained in:
darkvater 2004-11-12 19:03:37 +00:00
parent c53cf38ffd
commit 2aae43a848
1 changed files with 34 additions and 0 deletions
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34
grfspecial.c
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@ -26,6 +26,10 @@ static int _cur_spriteid;
static int32 _paramlist[0x7f];
static int _param_max;
/* 32 * 8 = 256 flags. Apparently TTDPatch uses this many.. */
static uint32 _ttdpatch_flags[8];
typedef void (*SpecialSpriteHandler)(byte *buf, int len);
static const int _vehshifts[4] = {
@ -898,6 +902,10 @@ static void SkipIf(byte *buf, int len)
/* XXX: This should be always true (at least until we get multiple loading stages?). */
param_val = 1;
break;
case 0x85:
param_val = _ttdpatch_flags[cond_val / 0x20];
cond_val %= 0x20;
break;
case 0x86:
param_val = _opt.road_side << 4;
break;
@ -1176,6 +1184,26 @@ static void GRFInhibit(byte *buf, int len)
/* TODO */
}
static void InitializeGRFSpecial(void)
{
/* FIXME: We should rather reflect reality in _ttdpatch_flags[]. */
_ttdpatch_flags[1] = (1 << 0x08) /* mammothtrains */
| (1 << 0x0B) /* subsidiaries */
| (1 << 0x14) /* bridgespeedlimits */
| (1 << 0x16) /* eternalgame */
| (1 << 0x17) /* newtrains */
| (1 << 0x18) /* newrvs */
| (1 << 0x19) /* newships */
| (1 << 0x1A); /* newplanes */
_ttdpatch_flags[2] = (1 << 0x0D) /* signalsontrafficside */
| (1 << 0x16) /* canals */
| (1 << 0x17); /* newstartyear */
}
/* Here we perform initial decoding of some special sprites (as are they
* described at http://www.ttdpatch.net/src/newgrf.txt, but this is only a very
* partial implementation yet; also, we ignore the stages stuff). */
@ -1203,12 +1231,18 @@ void DecodeSpecialSprite(const char *filename, int num, int spriteid)
/* 0xd */ ParamSet,
/* 0xe */ GRFInhibit,
};
static int initialized;
byte action;
byte *buf = malloc(num);
int i;
if (buf == NULL) error("DecodeSpecialSprite: Could not allocate memory");
if (!initialized) {
InitializeGRFSpecial();
initialized = 1;
}
_cur_grffile = filename;
_cur_spriteid = spriteid;