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(svn r547) -newgrf: Enhanced support for action 0x7 and 0x9 (skips). Killer mixture mixed from octo's patch and pasky's old patch (pasky & octo).

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darkvater 2004-11-12 17:27:30 +00:00
parent e7441c39e3
commit fd80b53f39
1 changed files with 46 additions and 11 deletions
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57
grfspecial.c
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@ -723,7 +723,6 @@ static void SpriteNewSuperset(byte *buf, int len)
/* Action 0x03 */
static void VehicleMapSpriteSuperset(byte *buf, int len)
{
byte *bufend = buf + len;
/* <03> <feature> <n-id> <ids>... <num-cid> [<cargo-type> <cid>]... <def-cid>
* id-list := [<id>] [id-list]
* cargo-list := <cargo-type> <cid> [cargo-list]
@ -927,33 +926,69 @@ static void SkipIf(byte *buf, int len)
uint8 paramsize;
uint8 condtype;
uint8 numsprites;
int val, result;
int param_val = 0, cond_val = 0, result;
check_length(len, 6, "SkipIf");
param = buf[1];
paramsize = buf[2];
condtype = buf[3];
numsprites = buf[4 + paramsize];
if (param == 0x83) {
val = _opt.landscape;
} else {
grfmsg(GMS_WARN, "Unsupported param %x. Ignoring test.", param);
return;
if (condtype < 2) {
/* Always 1 for bit tests, the given value should
* be ignored. */
paramsize = 1;
}
buf += 4;
if (paramsize == 4)
cond_val = grf_load_dword(&buf);
else if (paramsize == 2)
cond_val = grf_load_word(&buf);
else if (paramsize == 1)
cond_val = grf_load_byte(&buf);
switch (param) {
case 0x83:
param_val = _opt.landscape;
break;
case 0x84:
/* XXX: This should be always true (at least until we get multiple loading stages?). */
param_val = 1;
break;
case 0x86:
param_val = _opt.road_side << 4;
break;
default:
grfmsg(GMS_WARN, "Unsupported param %x. Ignoring test.", param);
return;
}
switch (condtype) {
case 2: result = (buf[4] == val);
case 0: result = (param_val & (1 << cond_val));
break;
case 3: result = (buf[4] != val);
case 1: result = !(param_val & (1 << cond_val));
break;
/* TODO: For the following, make it to work with paramsize>1. */
case 2: result = (param_val == cond_val);
break;
case 3: result = (param_val != cond_val);
break;
case 4: result = (param_val < cond_val);
break;
case 5: result = (param_val > cond_val);
break;
default:
grfmsg(GMS_WARN, "Unsupported test %d. Ignoring.", condtype);
return;
}
if (!result)
if (result == 0) {
grfmsg(GMS_NOTICE, "Not skipping sprites, test was false.");
return;
}
numsprites = grf_load_byte(&buf);
grfmsg(GMS_NOTICE, "Skipping %d sprites, test was true.", numsprites);
_skip_sprites = numsprites;
if (_skip_sprites == 0) {