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(svn r20796) -Fix: make sure all houses in the house spec array are valid. It was possible that part of a multitile house was not copied because the array was full

This commit is contained in:
yexo 2010-09-13 13:08:53 +00:00
parent 3e64d01a63
commit e5a81fbbde
1 changed files with 56 additions and 26 deletions
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82
src/newgrf.cpp
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@ -7277,6 +7277,50 @@ static void FinaliseCargoArray()
}
}
/**
* Check if a given housespec is valid and disable it if it's not.
* The housespecs that follow it are used to check the validity of
* multitile houses.
* @param hs The housespec to check.
* @param next1 The housespec that follows \c hs.
* @param next2 The housespec that follows \c next1.
* @param next3 The housespec that follows \c next2.
* @param filename The filename of the newgrf this house was defined in.
* @return Whether the given housespec is valid.
*/
static bool IsHouseSpecValid(HouseSpec *hs, const HouseSpec *next1, const HouseSpec *next2, const HouseSpec *next3, const char *filename)
{
if (((hs->building_flags & BUILDING_HAS_2_TILES) != 0 &&
(next1 == NULL || !next1->enabled || (next1->building_flags & BUILDING_HAS_1_TILE) != 0)) ||
((hs->building_flags & BUILDING_HAS_4_TILES) != 0 &&
(next2 == NULL || !next2->enabled || (next2->building_flags & BUILDING_HAS_1_TILE) != 0 ||
next3 == NULL || !next3->enabled || (next3->building_flags & BUILDING_HAS_1_TILE) != 0))) {
hs->enabled = false;
if (filename != NULL) DEBUG(grf, 1, "FinaliseHouseArray: %s defines house %d as multitile, but no suitable tiles follow. Disabling house.", filename, hs->grf_prop.local_id);
return false;
}
/* Some places sum population by only counting north tiles. Other places use all tiles causing desyncs.
* As the newgrf specs define population to be zero for non-north tiles, we just disable the offending house.
* If you want to allow non-zero populations somewhen, make sure to sum the population of all tiles in all places. */
if (((hs->building_flags & BUILDING_HAS_2_TILES) != 0 && next1->population != 0) ||
((hs->building_flags & BUILDING_HAS_4_TILES) != 0 && (next2->population != 0 || next3->population != 0))) {
hs->enabled = false;
if (filename != NULL) DEBUG(grf, 1, "FinaliseHouseArray: %s defines multitile house %d with non-zero population on additional tiles. Disabling house.", filename, hs->grf_prop.local_id);
return false;
}
/* Substitute type is also used for override, and having an override with a different size causes crashes.
* This check should only be done for NewGRF houses because grf_prop.subst_id is not set for original houses.*/
if (filename != NULL && (hs->building_flags & BUILDING_HAS_1_TILE) != (HouseSpec::Get(hs->grf_prop.subst_id)->building_flags & BUILDING_HAS_1_TILE)) {
hs->enabled = false;
DEBUG(grf, 1, "FinaliseHouseArray: %s defines house %d with different house size then it's substitute type. Disabling house.", filename, hs->grf_prop.local_id);
return false;
}
return true;
}
/**
* Add all new houses to the house array. House properties can be set at any
* time in the GRF file, so we can only add a house spec to the house array
@ -7310,38 +7354,24 @@ static void FinaliseHouseArray()
const HouseSpec *next2 = (i + 2 < HOUSE_MAX ? housespec[i + 2] : NULL);
const HouseSpec *next3 = (i + 3 < HOUSE_MAX ? housespec[i + 3] : NULL);
if (((hs->building_flags & BUILDING_HAS_2_TILES) != 0 &&
(next1 == NULL || !next1->enabled || (next1->building_flags & BUILDING_HAS_1_TILE) != 0)) ||
((hs->building_flags & BUILDING_HAS_4_TILES) != 0 &&
(next2 == NULL || !next2->enabled || (next2->building_flags & BUILDING_HAS_1_TILE) != 0 ||
next3 == NULL || !next3->enabled || (next3->building_flags & BUILDING_HAS_1_TILE) != 0))) {
hs->enabled = false;
DEBUG(grf, 1, "FinaliseHouseArray: %s defines house %d as multitile, but no suitable tiles follow. Disabling house.", (*file)->filename, hs->grf_prop.local_id);
continue;
}
/* Some places sum population by only counting north tiles. Other places use all tiles causing desyncs.
* As the newgrf specs define population to be zero for non-north tiles, we just disable the offending house.
* If you want to allow non-zero populations somewhen, make sure to sum the population of all tiles in all places. */
if (((hs->building_flags & BUILDING_HAS_2_TILES) != 0 && next1->population != 0) ||
((hs->building_flags & BUILDING_HAS_4_TILES) != 0 && (next2->population != 0 || next3->population != 0))) {
hs->enabled = false;
DEBUG(grf, 1, "FinaliseHouseArray: %s defines multitile house %d with non-zero population on additional tiles. Disabling house.", (*file)->filename, hs->grf_prop.local_id);
continue;
}
/* Substitute type is also used for override, and having an override with a different size causes crashes. */
if ((hs->building_flags & BUILDING_HAS_1_TILE) != (HouseSpec::Get(hs->grf_prop.subst_id)->building_flags & BUILDING_HAS_1_TILE)) {
hs->enabled = false;
DEBUG(grf, 1, "FinaliseHouseArray: %s defines house %d with different house size then it's substitute type. Disabling house.", (*file)->filename, hs->grf_prop.local_id);
continue;
}
if (!IsHouseSpecValid(hs, next1, next2, next3, (*file)->filename)) continue;
_house_mngr.SetEntitySpec(hs);
if (hs->min_year < min_year) min_year = hs->min_year;
}
}
for (int i = 0; i < HOUSE_MAX; i++) {
HouseSpec *hs = HouseSpec::Get(i);
const HouseSpec *next1 = (i + 1 < HOUSE_MAX ? HouseSpec::Get(i + 1) : NULL);
const HouseSpec *next2 = (i + 2 < HOUSE_MAX ? HouseSpec::Get(i + 2) : NULL);
const HouseSpec *next3 = (i + 3 < HOUSE_MAX ? HouseSpec::Get(i + 3) : NULL);
/* We need to check all houses again to we are sure that multitile houses
* did get consecutive IDs and none of the parts are missing. */
IsHouseSpecValid(hs, next1, next2, next3, NULL);
}
if (min_year != 0) {
for (int i = 0; i < HOUSE_MAX; i++) {
HouseSpec *hs = HouseSpec::Get(i);