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-rw-r--r--src/ai/api/ai_changelog.hpp4
-rw-r--r--src/lang/english.txt1
-rw-r--r--src/station_cmd.cpp110
3 files changed, 82 insertions, 33 deletions
diff --git a/src/ai/api/ai_changelog.hpp b/src/ai/api/ai_changelog.hpp
index d554b4418..16b9505b7 100644
--- a/src/ai/api/ai_changelog.hpp
+++ b/src/ai/api/ai_changelog.hpp
@@ -18,6 +18,10 @@
*
* 1.1.0 is not yet released. The following changes are not set in stone yet.
*
+ * Other changes:
+ * \li AIRoad::BuildRoadStation now allows overbuilding
+ * \li AIRoad::BuildDriveThroughRoadStation now allows overbuilding
+ *
* \b 1.0.0
*
* 1.0.0 is not yet released. The following changes are not set in stone yet.
diff --git a/src/lang/english.txt b/src/lang/english.txt
index 2da50d2e4..643b518c0 100644
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -3425,6 +3425,7 @@ STR_ERROR_CAN_T_REMOVE_BUS_STATION :{WHITE}Can't re
STR_ERROR_CAN_T_REMOVE_TRUCK_STATION :{WHITE}Can't remove lorry station...
STR_ERROR_CAN_T_REMOVE_PASSENGER_TRAM_STATION :{WHITE}Can't remove passenger tram station...
STR_ERROR_CAN_T_REMOVE_CARGO_TRAM_STATION :{WHITE}Can't remove freight tram station...
+STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST :{WHITE}Must remove road stop first
STR_ERROR_MUST_DEMOLISH_RAILROAD :{WHITE}Must demolish railway station first
STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST :{WHITE}Must demolish bus station first
diff --git a/src/station_cmd.cpp b/src/station_cmd.cpp
index 6a2216d7a..c30f4108b 100644
--- a/src/station_cmd.cpp
+++ b/src/station_cmd.cpp
@@ -804,11 +804,13 @@ static CommandCost CheckFlatLandRailStation(TileArea tile_area, DoCommandFlag fl
* @param flags Operation to perform.
* @param invalid_dirs Prohibited directions (set of DiagDirections).
* @param is_drive_through True if trying to build a drive-through station.
+ * @param is_truck_stop True when building a truck stop, false otherwise.
* @param axis Axis of a drive-through road stop.
+ * @param station StationID to be queried and returned if available.
* @param rts Road types to build. Bits already built at the tile will be removed.
* @return The cost in case of success, or an error code if it failed.
*/
-static CommandCost CheckFlatLandRoadStop(TileArea tile_area, DoCommandFlag flags, uint invalid_dirs, bool is_drive_through, Axis axis, RoadTypes &rts)
+static CommandCost CheckFlatLandRoadStop(TileArea tile_area, DoCommandFlag flags, uint invalid_dirs, bool is_drive_through, bool is_truck_stop, Axis axis, StationID *station, RoadTypes &rts)
{
CommandCost cost(EXPENSES_CONSTRUCTION);
int allowed_z = -1;
@@ -818,43 +820,64 @@ static CommandCost CheckFlatLandRoadStop(TileArea tile_area, DoCommandFlag flags
if (ret.Failed()) return ret;
cost.AddCost(ret);
- bool build_over_road = is_drive_through && IsNormalRoadTile(cur_tile);
- /* Road bits in the wrong direction. */
- if (build_over_road && (GetAllRoadBits(cur_tile) & (axis == AXIS_X ? ROAD_Y : ROAD_X)) != 0) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
-
- RoadTypes cur_rts = IsNormalRoadTile(cur_tile) ? GetRoadTypes(cur_tile) : ROADTYPES_NONE;
- uint num_roadbits = 0;
- if (build_over_road) {
- /* There is a road, check if we can build road+tram stop over it. */
- if (HasBit(cur_rts, ROADTYPE_ROAD)) {
- Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
- if (road_owner == OWNER_TOWN) {
- if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
- } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE && !CheckOwnership(road_owner)) {
- return CMD_ERROR;
+ /* If station is set, then we have special handling to allow building on top of already existing stations.
+ * Station points to INVALID_STATION if we can build on any station.
+ * Or it points to a station if we're only allowed to build on exactly that station. */
+ if (station != NULL && IsTileType(cur_tile, MP_STATION)) {
+ if (!IsRoadStop(cur_tile)) {
+ return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
+ } else {
+ if (is_truck_stop != IsTruckStop(cur_tile) ||
+ is_drive_through != IsDriveThroughStopTile(cur_tile) ||
+ HasBit(rts, ROADTYPE_TRAM) != HasBit(GetRoadTypes(cur_tile), ROADTYPE_TRAM)) {
+ return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
+ }
+ StationID st = GetStationIndex(cur_tile);
+ if (*station == INVALID_STATION) {
+ *station = st;
+ } else if (*station != st) {
+ return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
}
- num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_ROAD));
}
+ } else {
+ bool build_over_road = is_drive_through && IsNormalRoadTile(cur_tile);
+ /* Road bits in the wrong direction. */
+ if (build_over_road && (GetAllRoadBits(cur_tile) & (axis == AXIS_X ? ROAD_Y : ROAD_X)) != 0) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
+
+ RoadTypes cur_rts = IsNormalRoadTile(cur_tile) ? GetRoadTypes(cur_tile) : ROADTYPES_NONE;
+ uint num_roadbits = 0;
+ if (build_over_road) {
+ /* There is a road, check if we can build road+tram stop over it. */
+ if (HasBit(cur_rts, ROADTYPE_ROAD)) {
+ Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
+ if (road_owner == OWNER_TOWN) {
+ if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
+ } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE && !CheckOwnership(road_owner)) {
+ return CMD_ERROR;
+ }
+ num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_ROAD));
+ }
- /* There is a tram, check if we can build road+tram stop over it. */
- if (HasBit(cur_rts, ROADTYPE_TRAM)) {
- Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
- if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE && !CheckOwnership(tram_owner)) {
- return CMD_ERROR;
+ /* There is a tram, check if we can build road+tram stop over it. */
+ if (HasBit(cur_rts, ROADTYPE_TRAM)) {
+ Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
+ if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE && !CheckOwnership(tram_owner)) {
+ return CMD_ERROR;
+ }
+ num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_TRAM));
}
- num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_TRAM));
+
+ /* Do not remove roadtypes! */
+ rts |= cur_rts;
+ } else {
+ ret = DoCommand(cur_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
+ if (ret.Failed()) return ret;
+ cost.AddCost(ret);
}
- /* Do not remove roadtypes! */
- rts |= cur_rts;
- } else {
- ret = DoCommand(cur_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
- if (ret.Failed()) return ret;
- cost.AddCost(ret);
+ uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
+ cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
}
-
- uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
- cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
}
return cost;
@@ -1595,6 +1618,22 @@ static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
}
}
+static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags);
+
+/**
+ * Find a nearby station that joins this road stop.
+ * @param existing_stop an existing road stop we build over
+ * @param station_to_join the station to join to
+ * @param adjacent whether adjacent stations are allowed
+ * @param ta the area of the newly build station
+ * @param st 'return' pointer for the found station
+ * @return command cost with the error or 'okay'
+ */
+static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
+{
+ return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST>(existing_stop, station_to_join, adjacent, ta, st);
+}
+
/** Build a bus or truck stop.
* @param tile Northernmost tile of the stop.
* @param flags Operation to perform.
@@ -1651,12 +1690,13 @@ CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uin
/* Total road stop cost. */
CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
- CommandCost ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << ddir : 1 << ddir, is_drive_through, DiagDirToAxis(ddir), rts);
+ StationID est = INVALID_STATION;
+ CommandCost ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << ddir : 1 << ddir, is_drive_through, type, DiagDirToAxis(ddir), &est, rts);
if (ret.Failed()) return ret;
cost.AddCost(ret);
Station *st = NULL;
- ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 5), roadstop_area, &st);
+ ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 5), roadstop_area, &st);
if (ret.Failed()) return ret;
/* Find a deleted station close to us */
@@ -1690,6 +1730,10 @@ CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uin
if (flags & DC_EXEC) {
/* Check every tile in the area. */
TILE_AREA_LOOP(cur_tile, roadstop_area) {
+ if (IsTileType(cur_tile, MP_STATION) && IsRoadStop(cur_tile)) {
+ RemoveRoadStop(cur_tile, flags);
+ }
+
RoadStop *road_stop = new RoadStop(cur_tile);
/* Insert into linked list of RoadStops. */
RoadStop **currstop = FindRoadStopSpot(type, st);
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-19 05:30:18 +0000