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(svn r15713) -Feature(ette): Allow static newgrfs to set 'GRF ID engine overrides', if the source GRF is static.

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This commit is contained in:
frosch 2009-03-14 19:38:19 +00:00
parent f33d0f17a3
commit 3e3177d777
1 changed files with 17 additions and 1 deletions
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18
src/newgrf.cpp
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@ -2520,7 +2520,7 @@ static void SafeChangeInfo(byte *buf, size_t len)
buf++;
uint8 feature = grf_load_byte(&buf);
uint8 numprops = grf_load_byte(&buf);
grf_load_byte(&buf); // num-info
uint numinfo = grf_load_byte(&buf);
grf_load_extended(&buf); // id
if (feature == GSF_BRIDGE && numprops == 1) {
@ -2528,6 +2528,22 @@ static void SafeChangeInfo(byte *buf, size_t len)
/* Bridge property 0x0D is redefinition of sprite layout tables, which
* is considered safe. */
if (prop == 0x0D) return;
} else if (feature == GSF_GLOBALVAR && numprops == 1) {
uint8 prop = grf_load_byte(&buf);
/* Engine ID Mappings are safe, if the source is static */
if (prop == 0x11) {
bool is_safe = true;
for (uint i = 0; i < numinfo; i++) {
uint32 s = grf_load_dword(&buf);
grf_load_dword(&buf); // dest
const GRFConfig *grfconfig = GetGRFConfig(s);
if (grfconfig != NULL && !HasBit(grfconfig->flags, GCF_STATIC)) {
is_safe = false;
break;
}
}
if (is_safe) return;
}
}
SetBit(_cur_grfconfig->flags, GCF_UNSAFE);