* Prepare the data for the build a bridge window. * If we can't build a bridge under the given conditions * show an error message. * * @param start The start tile of the bridge * @param end The end tile of the bridge * @param transport_type The transport type * @param road_rail_type The road/rail type */
| 355 | * @param road_rail_type The road/rail type |
| 356 | */ |
| 357 | void ShowBuildBridgeWindow(TileIndex start, TileIndex end, TransportType transport_type, uint8_t road_rail_type) |
| 358 | { |
| 359 | CloseWindowByClass(WC_BUILD_BRIDGE); |
| 360 | |
| 361 | /* The bridge length without ramps. */ |
| 362 | const uint bridge_len = GetTunnelBridgeLength(start, end); |
| 363 | |
| 364 | /* If Ctrl is being pressed, check whether the last bridge built is available |
| 365 | * If so, return this bridge type. Otherwise continue normally. |
| 366 | * We store bridge types for each transport type, so we have to check for |
| 367 | * the transport type beforehand. |
| 368 | */ |
| 369 | BridgeType last_bridge_type = 0; |
| 370 | switch (transport_type) { |
| 371 | case TRANSPORT_ROAD: last_bridge_type = _last_roadbridge_type; break; |
| 372 | case TRANSPORT_RAIL: last_bridge_type = _last_railbridge_type; break; |
| 373 | default: break; // water ways and air routes don't have bridge types |
| 374 | } |
| 375 | if (_ctrl_pressed && CheckBridgeAvailability(last_bridge_type, bridge_len).Succeeded()) { |
| 376 | Command<CMD_BUILD_BRIDGE>::Post(STR_ERROR_CAN_T_BUILD_BRIDGE_HERE, CcBuildBridge, end, start, transport_type, last_bridge_type, road_rail_type); |
| 377 | return; |
| 378 | } |
| 379 | |
| 380 | /* only query bridge building possibility once, result is the same for all bridges! |
| 381 | * returns CMD_ERROR on failure, and price on success */ |
| 382 | CommandCost ret = Command<CMD_BUILD_BRIDGE>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_BRIDGE>()) | DoCommandFlag::QueryCost, end, start, transport_type, 0, road_rail_type); |
| 383 | |
| 384 | GUIBridgeList bl; |
| 385 | if (!ret.Failed()) { |
| 386 | /* check which bridges can be built */ |
| 387 | const uint tot_bridgedata_len = CalcBridgeLenCostFactor(bridge_len + 2); |
| 388 | |
| 389 | Money infra_cost = 0; |
| 390 | switch (transport_type) { |
| 391 | case TRANSPORT_ROAD: { |
| 392 | /* In case we add a new road type as well, we must be aware of those costs. */ |
| 393 | RoadType road_rt = INVALID_ROADTYPE; |
| 394 | RoadType tram_rt = INVALID_ROADTYPE; |
| 395 | if (IsBridgeTile(start)) { |
| 396 | road_rt = GetRoadTypeRoad(start); |
| 397 | tram_rt = GetRoadTypeTram(start); |
| 398 | } |
| 399 | if (RoadTypeIsRoad((RoadType)road_rail_type)) { |
| 400 | road_rt = (RoadType)road_rail_type; |
| 401 | } else { |
| 402 | tram_rt = (RoadType)road_rail_type; |
| 403 | } |
| 404 | |
| 405 | if (road_rt != INVALID_ROADTYPE) infra_cost += (bridge_len + 2) * 2 * RoadBuildCost(road_rt); |
| 406 | if (tram_rt != INVALID_ROADTYPE) infra_cost += (bridge_len + 2) * 2 * RoadBuildCost(tram_rt); |
| 407 | |
| 408 | break; |
| 409 | } |
| 410 | case TRANSPORT_RAIL: infra_cost = (bridge_len + 2) * RailBuildCost((RailType)road_rail_type); break; |
| 411 | default: break; |
| 412 | } |
| 413 | |
| 414 | bool any_available = false; |
no test coverage detected