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(svn r5690) Factor common code to reduce code duplication

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tron 2006-08-01 06:08:11 +00:00
parent 31e0bae89a
commit 2ee4ebfa39
1 changed files with 21 additions and 26 deletions
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47
newgrf_station.c
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@ -678,42 +678,37 @@ bool DrawStationTile(int x, int y, RailType railtype, Axis axis, StationClassID
return true;
}
static const StationSpec* GetStationSpec(TileIndex t)
{
const Station* st;
uint specindex;
if (!IsCustomStationSpecIndex(t)) return NULL;
st = GetStationByTile(t);
specindex = GetCustomStationSpecIndex(t);
return specindex < st->num_specs ? st->speclist[specindex].spec : NULL;
}
/* Check if a rail station tile is traversable.
* XXX This could be cached (during build) in the map array to save on all the dereferencing */
bool IsStationTileBlocked(TileIndex tile)
{
const Station *st;
const StationSpec *statspec;
uint specindex;
const StationSpec* statspec = GetStationSpec(tile);
if (!IsCustomStationSpecIndex(tile)) return false;
st = GetStationByTile(tile);
specindex = GetCustomStationSpecIndex(tile);
if (specindex >= st->num_specs) return false;
statspec = st->speclist[specindex].spec;
if (statspec == NULL) return false;
return HASBIT(statspec->blocked, GetStationGfx(tile));
return statspec != NULL && HASBIT(statspec->blocked, GetStationGfx(tile));
}
/* Check if a rail station tile is electrifiable.
* XXX This could be cached (during build) in the map array to save on all the dereferencing */
bool IsStationTileElectrifiable(TileIndex tile)
{
const Station *st;
const StationSpec *statspec;
uint specindex;
const StationSpec* statspec = GetStationSpec(tile);
if (!IsCustomStationSpecIndex(tile)) return true;
st = GetStationByTile(tile);
specindex = GetCustomStationSpecIndex(tile);
if (specindex >= st->num_specs) return true;
statspec = st->speclist[specindex].spec;
if (statspec == NULL) return true;
return HASBIT(statspec->pylons, GetStationGfx(tile)) || !HASBIT(statspec->wires, GetStationGfx(tile));
return
statspec == NULL ||
HASBIT(statspec->pylons, GetStationGfx(tile)) ||
!HASBIT(statspec->wires, GetStationGfx(tile));
}