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(svn r13758) -Fix (r13226): always use st->airport_tile, st->xy is different in many cases

This commit is contained in:
smatz 2008-07-20 15:50:41 +00:00
parent 6dfc596da1
commit 690859bf57
2 changed files with 21 additions and 22 deletions
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4
src/airport.h
View File

@ -197,8 +197,4 @@ const AirportFTAClass *GetAirport(const byte airport_type);
*/
uint32 GetValidAirports();
/* Calculate the noise this type airport will generate */
uint8 GetAirportNoiseLevelForTown(const AirportFTAClass *afc, TileIndex town_tile, TileIndex tile);
#endif /* AIRPORT_H */

39
src/station_cmd.cpp
View File

@ -1613,42 +1613,28 @@ static const byte * const _airport_sections[] = {
_airport_sections_helistation // Helistation
};
/** Recalculate the noise generated by the airports of each town */
void UpdateAirportsNoise()
{
Town *t;
const Station *st;
FOR_ALL_TOWNS(t) t->noise_reached = 0;
FOR_ALL_STATIONS(st) {
if (IsAirport(st->xy)) {
st->town->noise_reached += GetAirportNoiseLevelForTown(GetAirport(st->airport_type), st->town->xy, st->xy);
}
}
}
/** Get a possible noise reduction factor based on distance from town center.
* The further you get, the less noise you generate.
* So all those folks at city council can now happily slee... work in their offices
* @param afc AirportFTAClass pointer of the class being proposed
* @param town_tile TileIndex of town's center, the one who will receive the airport's candidature
* @param tile TileIndex where the new airport might be built
* @param tile TileIndex of northern tile of an airport (present or to-be-built), NOT the station tile
* @return the noise that will be generated, according to distance
*/
uint8 GetAirportNoiseLevelForTown(const AirportFTAClass *afc, TileIndex town_tile, TileIndex tile)
static uint8 GetAirportNoiseLevelForTown(const AirportFTAClass *afc, TileIndex town_tile, TileIndex tile)
{
struct TileIndexDistance {
TileIndex index;
uint distance;
};
uint distance;
/* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
* So no need to go any further*/
if (afc->noise_level < 2) return afc->noise_level;
uint distance;
/* Find the airport-to-be's closest corner to the town */
if (afc->size_x == 1 && afc->size_y == 1) {
distance = DistanceManhattan(town_tile, tile); // ont tile, one corner, it's THE corner
@ -1692,6 +1678,23 @@ uint8 GetAirportNoiseLevelForTown(const AirportFTAClass *afc, TileIndex town_til
return noise_reduction >= afc->noise_level ? 1 : afc->noise_level - noise_reduction;
}
/** Recalculate the noise generated by the airports of each town */
void UpdateAirportsNoise()
{
Town *t;
const Station *st;
FOR_ALL_TOWNS(t) t->noise_reached = 0;
FOR_ALL_STATIONS(st) {
if (st->airport_tile != 0) {
st->town->noise_reached += GetAirportNoiseLevelForTown(GetAirport(st->airport_type), st->town->xy, st->airport_tile);
}
}
}
/** Place an Airport.
* @param tile tile where airport will be built
* @param flags operation to perform