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(svn r16974) -Codechange: do simple station build checks and 'decode' p1/p2 first

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rubidium 2009-07-28 18:52:16 +00:00
parent 6d1a431e8e
commit 2543b1b20a
1 changed files with 27 additions and 20 deletions
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47
src/station_cmd.cpp
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@ -820,11 +820,12 @@ static void GetStationLayout(byte *layout, int numtracks, int plat_len, const St
}
}
/** Build railroad station
* @param tile_org starting position of station dragging/placement
/**
* Build railroad station
* @param tile_org northern most position of station dragging/placement
* @param flags operation to perform
* @param p1 various bitstuffed elements
* - p1 = (bit 0- 3) - railtype (p1 & 0xF)
* - p1 = (bit 0- 3) - railtype
* - p1 = (bit 4) - orientation (Axis)
* - p1 = (bit 8-15) - number of tracks
* - p1 = (bit 16-23) - platform length
@ -832,18 +833,28 @@ static void GetStationLayout(byte *layout, int numtracks, int plat_len, const St
* @param p2 various bitstuffed elements
* - p2 = (bit 0- 7) - custom station class
* - p2 = (bit 8-15) - custom station id
* - p2 = (bit 16-31) - station ID to join (INVALID_STATION if build new one)
* - p2 = (bit 16-31) - station ID to join (NEW_STATION if build new one)
*/
CommandCost CmdBuildRailroadStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
/* Unpack parameters */
RailType rt = (RailType)GB(p1, 0, 4);
Axis axis = Extract<Axis, 4>(p1);
byte numtracks = GB(p1, 8, 8);
byte plat_len = GB(p1, 16, 8);
bool adjacent = HasBit(p1, 24);
StationClassID spec_class = (StationClassID)GB(p2, 0, 8);
byte spec_index = GB(p2, 8, 8);
StationID station_to_join = GB(p2, 16, 16);
/* Does the authority allow this? */
if (!CheckIfAuthorityAllowsNewStation(tile_org, flags)) return CMD_ERROR;
if (!ValParamRailtype((RailType)(p1 & 0xF))) return CMD_ERROR;
if (!ValParamRailtype(rt)) return CMD_ERROR;
/* unpack parameters */
Axis axis = Extract<Axis, 4>(p1);
uint numtracks = GB(p1, 8, 8);
uint plat_len = GB(p1, 16, 8);
/* Check if the given station class is valid */
if ((uint)spec_class >= GetNumStationClasses()) return CMD_ERROR;
if (spec_index >= GetNumCustomStations(spec_class)) return CMD_ERROR;
int w_org, h_org;
if (axis == AXIS_X) {
@ -854,7 +865,6 @@ CommandCost CmdBuildRailroadStation(TileIndex tile_org, DoCommandFlag flags, uin
w_org = numtracks;
}
StationID station_to_join = GB(p2, 16, 16);
bool reuse = (station_to_join != NEW_STATION);
if (!reuse) station_to_join = INVALID_STATION;
bool distant_join = (station_to_join != INVALID_STATION);
@ -880,7 +890,7 @@ CommandCost CmdBuildRailroadStation(TileIndex tile_org, DoCommandFlag flags, uin
if (_settings_game.station.adjacent_stations) {
if (est != INVALID_STATION) {
if (HasBit(p1, 24) && est != station_to_join) {
if (adjacent && est != station_to_join) {
/* You can't build an adjacent station over the top of one that
* already exists. */
return_cmd_error(STR_MUST_REMOVE_RAILWAY_STATION_FIRST);
@ -893,7 +903,7 @@ CommandCost CmdBuildRailroadStation(TileIndex tile_org, DoCommandFlag flags, uin
} else {
/* There's no station here. Don't check the tiles surrounding this
* one if the company wanted to build an adjacent station. */
if (HasBit(p1, 24)) check_surrounding = false;
if (adjacent) check_surrounding = false;
}
}
@ -940,11 +950,8 @@ CommandCost CmdBuildRailroadStation(TileIndex tile_org, DoCommandFlag flags, uin
}
}
/* Check if the given station class is valid */
if (GB(p2, 0, 8) >= GetNumStationClasses()) return CMD_ERROR;
/* Check if we can allocate a custom stationspec to this station */
const StationSpec *statspec = GetCustomStationSpec((StationClassID)GB(p2, 0, 8), GB(p2, 8, 8));
const StationSpec *statspec = GetCustomStationSpec(spec_class, spec_index);
int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
@ -1014,7 +1021,7 @@ CommandCost CmdBuildRailroadStation(TileIndex tile_org, DoCommandFlag flags, uin
/* Remove animation if overbuilding */
DeleteAnimatedTile(tile);
byte old_specindex = IsTileType(tile, MP_STATION) ? GetCustomStationSpecIndex(tile) : 0;
MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, (RailType)GB(p1, 0, 4));
MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
/* Free the spec if we overbuild something */
DeallocateSpecFromStation(st, old_specindex);
@ -1342,7 +1349,7 @@ static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
* bit 1: 0 for normal, 1 for drive-through
* bit 2..3: the roadtypes
* bit 5: allow stations directly adjacent to other stations.
* bit 16..31: station ID to join (INVALID_STATION if build new one)
* bit 16..31: station ID to join (NEW_STATION if build new one)
*/
CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
@ -1706,7 +1713,7 @@ void UpdateAirportsNoise()
* @param p1 airport type, @see airport.h
* @param p2 various bitstuffed elements
* - p2 = (bit 0) - allow airports directly adjacent to other airports.
* - p2 = (bit 16-31) - station ID to join (INVALID_STATION if build new one)
* - p2 = (bit 16-31) - station ID to join (NEW_STATION if build new one)
*/
CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
@ -1960,7 +1967,7 @@ static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
* @param tile tile where dock will be built
* @param flags operation to perform
* @param p1 (bit 0) - allow docks directly adjacent to other docks.
* @param p2 bit 16-31: station ID to join (INVALID_STATION if build new one)
* @param p2 bit 16-31: station ID to join (NEW_STATION if build new one)
*/
CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{