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(svn r23441) -Fix [FS#4764]: some airport functions didn't take the layout into account resulting in wrong noise levels or nearests towns (patch by Zuu)

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rubidium 2011-12-06 21:02:57 +00:00
parent c0a6ce3025
commit de46e9647b
2 changed files with 30 additions and 30 deletions
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12
src/script/api/script_airport.cpp
View File

@ -127,16 +127,16 @@
/* static */ int ScriptAirport::GetNoiseLevelIncrease(TileIndex tile, AirportType type)
{
extern Town *AirportGetNearestTown(const AirportSpec *as, TileIndex airport_tile);
extern uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIndex town_tile, TileIndex tile);
extern Town *AirportGetNearestTown(const AirportSpec *as, byte layout, TileIndex airport_tile);
extern uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, byte layout, TileIndex town_tile, TileIndex tile);
if (!::IsValidTile(tile)) return -1;
if (!IsAirportInformationAvailable(type)) return -1;
if (_settings_game.economy.station_noise_level) {
const AirportSpec *as = ::AirportSpec::Get(type);
const Town *t = AirportGetNearestTown(as, tile);
return GetAirportNoiseLevelForTown(as, t->xy, tile);
const Town *t = AirportGetNearestTown(as, 0, tile);
return GetAirportNoiseLevelForTown(as, 0, t->xy, tile);
}
return 1;
@ -144,12 +144,12 @@
/* static */ TownID ScriptAirport::GetNearestTown(TileIndex tile, AirportType type)
{
extern Town *AirportGetNearestTown(const AirportSpec *as, TileIndex airport_tile);
extern Town *AirportGetNearestTown(const AirportSpec *as, byte layout, TileIndex airport_tile);
if (!::IsValidTile(tile)) return INVALID_TOWN;
if (!IsAirportInformationAvailable(type)) return INVALID_TOWN;
return AirportGetNearestTown(AirportSpec::Get(type), tile)->index;
return AirportGetNearestTown(AirportSpec::Get(type), 0, tile)->index;
}
/* static */ uint16 ScriptAirport::GetMaintenanceCostFactor(AirportType type)

48
src/station_cmd.cpp
View File

@ -2024,24 +2024,21 @@ CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, ui
* @param airport_tile st->airport.tile
* @return minimal manhattan distance from town_tile to any airport's tile
*/
static uint GetMinimalAirportDistanceToTile(const AirportSpec *as, TileIndex town_tile, TileIndex airport_tile)
static uint GetMinimalAirportDistanceToTile(const AirportSpec *as, byte layout, TileIndex town_tile, TileIndex airport_tile)
{
uint ttx = TileX(town_tile); // X, Y of town
uint tty = TileY(town_tile);
uint mindist = UINT_MAX;
uint atx = TileX(airport_tile); // X, Y of northern airport corner
uint aty = TileY(airport_tile);
const AirportTileTable *it = as->table[layout];
do {
TileIndex cur_tile = airport_tile + ToTileIndexDiff(it->ti);
uint btx = TileX(airport_tile) + as->size_x - 1; // X, Y of southern corner
uint bty = TileY(airport_tile) + as->size_y - 1;
uint dist = DistanceManhattan(town_tile, cur_tile);
if (dist < mindist) {
mindist = dist;
}
} while ((++it)->ti.x != -0x80);
/* if ttx < atx, dx = atx - ttx
* if atx <= ttx <= btx, dx = 0
* else, dx = ttx - btx (similiar for dy) */
uint dx = ttx < atx ? atx - ttx : (ttx <= btx ? 0 : ttx - btx);
uint dy = tty < aty ? aty - tty : (tty <= bty ? 0 : tty - bty);
return dx + dy;
return mindist;
}
/**
@ -2053,13 +2050,14 @@ static uint GetMinimalAirportDistanceToTile(const AirportSpec *as, TileIndex tow
* @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 AirportSpec *as, TileIndex town_tile, TileIndex tile)
uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, byte layout, TileIndex town_tile, TileIndex tile)
{
/* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
* So no need to go any further*/
if (as->noise_level < 2) return as->noise_level;
uint distance = GetMinimalAirportDistanceToTile(as, town_tile, tile);
assert(layout < as->num_table);
uint distance = GetMinimalAirportDistanceToTile(as, layout, town_tile, tile);
/* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
* adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
@ -2083,14 +2081,16 @@ uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIndex town_tile, Ti
* @param airport_tile st->airport.tile
* @return nearest town to airport
*/
Town *AirportGetNearestTown(const AirportSpec *as, TileIndex airport_tile)
Town *AirportGetNearestTown(const AirportSpec *as, byte layout, TileIndex airport_tile)
{
assert(layout < as->num_table);
Town *t, *nearest = NULL;
uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
uint mindist = UINT_MAX - add; // prevent overflow
FOR_ALL_TOWNS(t) {
if (DistanceManhattan(t->xy, airport_tile) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
uint dist = GetMinimalAirportDistanceToTile(as, t->xy, airport_tile);
uint dist = GetMinimalAirportDistanceToTile(as, layout, t->xy, airport_tile);
if (dist < mindist) {
nearest = t;
mindist = dist;
@ -2113,8 +2113,8 @@ void UpdateAirportsNoise()
FOR_ALL_STATIONS(st) {
if (st->airport.tile != INVALID_TILE) {
const AirportSpec *as = st->airport.GetSpec();
Town *nearest = AirportGetNearestTown(as, st->airport.tile);
nearest->noise_reached += GetAirportNoiseLevelForTown(as, nearest->xy, st->airport.tile);
Town *nearest = AirportGetNearestTown(as, st->airport.layout, st->airport.tile);
nearest->noise_reached += GetAirportNoiseLevelForTown(as, st->airport.layout, nearest->xy, st->airport.tile);
}
}
}
@ -2166,8 +2166,8 @@ CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
if (cost.Failed()) return cost;
/* The noise level is the noise from the airport and reduce it to account for the distance to the town center. */
Town *nearest = AirportGetNearestTown(as, tile);
uint newnoise_level = GetAirportNoiseLevelForTown(as, nearest->xy, tile);
Town *nearest = AirportGetNearestTown(as, layout, tile);
uint newnoise_level = GetAirportNoiseLevelForTown(as, layout, nearest->xy, tile);
/* Check if local auth would allow a new airport */
StringID authority_refuse_message = STR_NULL;
@ -2339,8 +2339,8 @@ static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
/* The noise level is the noise from the airport and reduce it to account for the distance to the town center.
* And as for construction, always remove it, even if the setting is not set, in order to avoid the
* need of recalculation */
Town *nearest = AirportGetNearestTown(as, tile);
nearest->noise_reached -= GetAirportNoiseLevelForTown(as, nearest->xy, tile);
Town *nearest = AirportGetNearestTown(as, st->airport.layout, tile);
nearest->noise_reached -= GetAirportNoiseLevelForTown(as, st->airport.layout, nearest->xy, tile);
st->rect.AfterRemoveRect(st, st->airport);