diff options
Diffstat (limited to 'src/road_cmd.cpp')
| -rw-r--r-- | src/road_cmd.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/road_cmd.cpp b/src/road_cmd.cpp index 22a4fac0f..3624a6931 100644 --- a/src/road_cmd.cpp +++ b/src/road_cmd.cpp @@ -43,6 +43,37 @@ #include "table/sprites.h" #include "table/strings.h" + +bool RoadVehiclesAreBuilt() +{ + const Vehicle* v; + + FOR_ALL_VEHICLES(v) { + if (v->type == VEH_ROAD) return true; + } + return false; +} + +/** + * Change the side of the road vehicles drive on (server only). + * @param tile unused + * @param flags operation to perform + * @param p1 the side of the road; 0 = left side and 1 = right side + * @param p2 unused + */ +CommandCost CmdSetRoadDriveSide(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) +{ + /* Check boundaries and you can only change this if NO vehicles have been built yet, + * except in the intro-menu where of course it's always possible to do so. */ + if (p1 > 1 || (_game_mode != GM_MENU && RoadVehiclesAreBuilt())) return CMD_ERROR; + + if (flags & DC_EXEC) { + _opt_ptr->road_side = p1; + InvalidateWindow(WC_GAME_OPTIONS, 0); + } + return CommandCost(); +} + #define M(x) (1 << (x)) /* Level crossings may only be built on these slopes */ static const uint32 VALID_LEVEL_CROSSING_SLOPES = (M(SLOPE_SEN) | M(SLOPE_ENW) | M(SLOPE_NWS) | M(SLOPE_NS) | M(SLOPE_WSE) | M(SLOPE_EW) | M(SLOPE_FLAT)); |