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(svn r11127) -Fix: truncate the result of 8 bits callbacks.

This commit is contained in:
rubidium 2007-09-18 20:41:59 +00:00
parent 7f721d31c2
commit 262836a24f
2 changed files with 22 additions and 1 deletions
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3
src/newgrf_callbacks.h
View File

@ -13,6 +13,9 @@
* bit is set in the callback flags/trigger for a vehicle, house,
* industry, etc.
* Names are formatted as CBID_<CLASS>_<CALLBACK>
*
* @note Do not forget to add 15 bits callbacks to the switch in
* newgrf_spritegroup.cpp (search for "15 bits callback").
*/
enum CallbackID {
/** Set when using the callback resolve system, but not to resolve a callback. */

20
src/newgrf_spritegroup.cpp
View File

@ -192,7 +192,25 @@ static inline const SpriteGroup *ResolveVariable(const SpriteGroup *group, Resol
if (group->g.determ.num_ranges == 0) {
/* nvar == 0 is a special case -- we turn our value into a callback result */
nvarzero.type = SGT_CALLBACK;
nvarzero.g.callback.result = GB(value, 0, 15);
switch (object->callback) {
/* All these functions are 15 bit callbacks */
case CBID_VEHICLE_REFIT_CAPACITY:
case CBID_BUILDING_COLOUR:
case CBID_HOUSE_CARGO_ACCEPTANCE:
case CBID_INDUSTRY_LOCATION:
case CBID_INDTILE_CARGO_ACCEPTANCE:
case CBID_VEHICLE_COLOUR_MAPPING:
case CBID_HOUSE_PRODUCE_CARGO:
case CBID_VEHICLE_SOUND_EFFECT:
case CBID_SOUNDS_AMBIENT_EFFECT:
nvarzero.g.callback.result = GB(value, 0, 15);
break;
/* The rest is a 8 bit callback, which should be truncated properly */
default:
nvarzero.g.callback.result = GB(value, 0, 8);
break;
}
return &nvarzero;
}