# water_cmd.cpp

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    00001 /* $Id$ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include "stdafx.h"
    00013 #include "cmd_helper.h"
    00014 #include "landscape.h"
    00015 #include "viewport_func.h"
    00016 #include "command_func.h"
    00017 #include "town.h"
    00018 #include "news_func.h"
    00019 #include "depot_base.h"
    00020 #include "depot_func.h"
    00021 #include "water.h"
    00022 #include "industry_map.h"
    00023 #include "newgrf_canal.h"
    00024 #include "strings_func.h"
    00025 #include "vehicle_func.h"
    00026 #include "sound_func.h"
    00027 #include "company_func.h"
    00028 #include "clear_map.h"
    00029 #include "tree_map.h"
    00030 #include "aircraft.h"
    00031 #include "effectvehicle_func.h"
    00032 #include "tunnelbridge_map.h"
    00033 #include "station_base.h"
    00034 #include "ai/ai.hpp"
    00035 #include "game/game.hpp"
    00036 #include "core/random_func.hpp"
    00037 #include "core/backup_type.hpp"
    00038 #include "date_func.h"
    00039 #include "company_base.h"
    00040 #include "company_gui.h"
    00041 #include "newgrf_generic.h"
    00042
    00043 #include "table/strings.h"
    00044
    00048 static const uint8 _flood_from_dirs[] = {
    00049   (1 << DIR_NW) | (1 << DIR_SW) | (1 << DIR_SE) | (1 << DIR_NE), // SLOPE_FLAT
    00050   (1 << DIR_NE) | (1 << DIR_SE),                                 // SLOPE_W
    00051   (1 << DIR_NW) | (1 << DIR_NE),                                 // SLOPE_S
    00052   (1 << DIR_NE),                                                 // SLOPE_SW
    00053   (1 << DIR_NW) | (1 << DIR_SW),                                 // SLOPE_E
    00054   0,                                                             // SLOPE_EW
    00055   (1 << DIR_NW),                                                 // SLOPE_SE
    00056   (1 << DIR_N ) | (1 << DIR_NW) | (1 << DIR_NE),                 // SLOPE_WSE, SLOPE_STEEP_S
    00057   (1 << DIR_SW) | (1 << DIR_SE),                                 // SLOPE_N
    00058   (1 << DIR_SE),                                                 // SLOPE_NW
    00059   0,                                                             // SLOPE_NS
    00060   (1 << DIR_E ) | (1 << DIR_NE) | (1 << DIR_SE),                 // SLOPE_NWS, SLOPE_STEEP_W
    00061   (1 << DIR_SW),                                                 // SLOPE_NE
    00062   (1 << DIR_S ) | (1 << DIR_SW) | (1 << DIR_SE),                 // SLOPE_ENW, SLOPE_STEEP_N
    00063   (1 << DIR_W ) | (1 << DIR_SW) | (1 << DIR_NW),                 // SLOPE_SEN, SLOPE_STEEP_E
    00064 };
    00065
    00072 static inline void MarkTileDirtyIfCanalOrRiver(TileIndex tile)
    00073 {
    00074   if (IsTileType(tile, MP_WATER) && (IsCanal(tile) || IsRiver(tile))) MarkTileDirtyByTile(tile);
    00075 }
    00076
    00083 static void MarkCanalsAndRiversAroundDirty(TileIndex tile)
    00084 {
    00085   for (Direction dir = DIR_BEGIN; dir < DIR_END; dir++) {
    00086     MarkTileDirtyIfCanalOrRiver(tile + TileOffsByDir(dir));
    00087   }
    00088 }
    00089
    00090
    00100 CommandCost CmdBuildShipDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00101 {
    00102   Axis axis = Extract<Axis, 0, 1>(p1);
    00103
    00104   TileIndex tile2 = tile + (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
    00105
    00106   if (!HasTileWaterGround(tile) || !HasTileWaterGround(tile2)) {
    00107     return_cmd_error(STR_ERROR_MUST_BE_BUILT_ON_WATER);
    00108   }
    00109
    00110   if ((MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) ||
    00111     (MayHaveBridgeAbove(tile2) && IsBridgeAbove(tile2))) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    00112
    00113   if (GetTileSlope(tile) != SLOPE_FLAT || GetTileSlope(tile2) != SLOPE_FLAT) {
    00114     /* Prevent depots on rapids */
    00115     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    00116   }
    00117
    00118   if (!Depot::CanAllocateItem()) return CMD_ERROR;
    00119
    00120   WaterClass wc1 = GetWaterClass(tile);
    00121   WaterClass wc2 = GetWaterClass(tile2);
    00122   CommandCost cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_DEPOT_SHIP]);
    00123
    00124   bool add_cost = !IsWaterTile(tile);
    00125   CommandCost ret = DoCommand(tile, 0, 0, flags | DC_AUTO, CMD_LANDSCAPE_CLEAR);
    00126   if (ret.Failed()) return ret;
    00127   if (add_cost) {
    00128     cost.AddCost(ret);
    00129   }
    00130   add_cost = !IsWaterTile(tile2);
    00131   ret = DoCommand(tile2, 0, 0, flags | DC_AUTO, CMD_LANDSCAPE_CLEAR);
    00132   if (ret.Failed()) return ret;
    00133   if (add_cost) {
    00134     cost.AddCost(ret);
    00135   }
    00136
    00137   if (flags & DC_EXEC) {
    00138     Depot *depot = new Depot(tile);
    00139     depot->build_date = _date;
    00140
    00141     if (wc1 == WATER_CLASS_CANAL || wc2 == WATER_CLASS_CANAL) {
    00142       /* Update infrastructure counts after the unconditional clear earlier. */
    00143       Company::Get(_current_company)->infrastructure.water += wc1 == WATER_CLASS_CANAL && wc2 == WATER_CLASS_CANAL ? 2 : 1;
    00144     }
    00145     Company::Get(_current_company)->infrastructure.water += 2 * LOCK_DEPOT_TILE_FACTOR;
    00146     DirtyCompanyInfrastructureWindows(_current_company);
    00147
    00148     MakeShipDepot(tile,  _current_company, depot->index, DEPOT_PART_NORTH, axis, wc1);
    00149     MakeShipDepot(tile2, _current_company, depot->index, DEPOT_PART_SOUTH, axis, wc2);
    00150     MarkTileDirtyByTile(tile);
    00151     MarkTileDirtyByTile(tile2);
    00152     MakeDefaultName(depot);
    00153   }
    00154
    00155   return cost;
    00156 }
    00157
    00158 void MakeWaterKeepingClass(TileIndex tile, Owner o)
    00159 {
    00160   WaterClass wc = GetWaterClass(tile);
    00161
    00162   /* Autoslope might turn an originally canal or river tile into land */
    00163   int z;
    00164   Slope slope = GetTileSlope(tile, &z);
    00165
    00166   if (slope != SLOPE_FLAT) {
    00167     if (wc == WATER_CLASS_CANAL) {
    00168       /* If we clear the canal, we have to remove it from the infrastructure count as well. */
    00169       Company *c = Company::GetIfValid(o);
    00170       if (c != NULL) {
    00171         c->infrastructure.water--;
    00172         DirtyCompanyInfrastructureWindows(c->index);
    00173       }
    00174       /* Sloped canals are locks and no natural water remains whatever the slope direction */
    00175       wc = WATER_CLASS_INVALID;
    00176     }
    00177
    00178     /* Only river water should be restored on appropriate slopes. Other water would be invalid on slopes */
    00179     if (wc != WATER_CLASS_RIVER || GetInclinedSlopeDirection(slope) == INVALID_DIAGDIR) {
    00180       wc = WATER_CLASS_INVALID;
    00181     }
    00182   }
    00183
    00184   if (wc == WATER_CLASS_SEA && z > 0) {
    00185     /* Update company infrastructure count. */
    00186     Company *c = Company::GetIfValid(o);
    00187     if (c != NULL) {
    00188       c->infrastructure.water++;
    00189       DirtyCompanyInfrastructureWindows(c->index);
    00190     }
    00191
    00192     wc = WATER_CLASS_CANAL;
    00193   }
    00194
    00195   /* Zero map array and terminate animation */
    00196   DoClearSquare(tile);
    00197
    00198   /* Maybe change to water */
    00199   switch (wc) {
    00200     case WATER_CLASS_SEA:   MakeSea(tile);                break;
    00201     case WATER_CLASS_CANAL: MakeCanal(tile, o, Random()); break;
    00202     case WATER_CLASS_RIVER: MakeRiver(tile, Random());    break;
    00203     default: break;
    00204   }
    00205
    00206   MarkTileDirtyByTile(tile);
    00207 }
    00208
    00209 static CommandCost RemoveShipDepot(TileIndex tile, DoCommandFlag flags)
    00210 {
    00211   if (!IsShipDepot(tile)) return CMD_ERROR;
    00212
    00213   CommandCost ret = CheckTileOwnership(tile);
    00214   if (ret.Failed()) return ret;
    00215
    00216   TileIndex tile2 = GetOtherShipDepotTile(tile);
    00217
    00218   /* do not check for ship on tile when company goes bankrupt */
    00219   if (!(flags & DC_BANKRUPT)) {
    00220     CommandCost ret = EnsureNoVehicleOnGround(tile);
    00221     if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile2);
    00222     if (ret.Failed()) return ret;
    00223   }
    00224
    00225   if (flags & DC_EXEC) {
    00226     delete Depot::GetByTile(tile);
    00227
    00228     Company *c = Company::GetIfValid(GetTileOwner(tile));
    00229     if (c != NULL) {
    00230       c->infrastructure.water -= 2 * LOCK_DEPOT_TILE_FACTOR;
    00231       DirtyCompanyInfrastructureWindows(c->index);
    00232     }
    00233
    00234     MakeWaterKeepingClass(tile,  GetTileOwner(tile));
    00235     MakeWaterKeepingClass(tile2, GetTileOwner(tile2));
    00236   }
    00237
    00238   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_DEPOT_SHIP]);
    00239 }
    00240
    00248 static CommandCost DoBuildLock(TileIndex tile, DiagDirection dir, DoCommandFlag flags)
    00249 {
    00250   CommandCost cost(EXPENSES_CONSTRUCTION);
    00251
    00252   int delta = TileOffsByDiagDir(dir);
    00253   CommandCost ret = EnsureNoVehicleOnGround(tile);
    00254   if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile + delta);
    00255   if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile - delta);
    00256   if (ret.Failed()) return ret;
    00257
    00258   /* middle tile */
    00259   WaterClass wc_middle = IsWaterTile(tile) ? GetWaterClass(tile) : WATER_CLASS_CANAL;
    00260   ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00261   if (ret.Failed()) return ret;
    00262   cost.AddCost(ret);
    00263
    00264   /* lower tile */
    00265   WaterClass wc_lower = IsWaterTile(tile - delta) ? GetWaterClass(tile - delta) : WATER_CLASS_CANAL;
    00266
    00267   if (!IsWaterTile(tile - delta)) {
    00268     ret = DoCommand(tile - delta, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00269     if (ret.Failed()) return ret;
    00270     cost.AddCost(ret);
    00271     cost.AddCost(_price[PR_BUILD_CANAL]);
    00272   }
    00273   if (GetTileSlope(tile - delta) != SLOPE_FLAT) {
    00274     return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
    00275   }
    00276
    00277   /* upper tile */
    00278   WaterClass wc_upper = IsWaterTile(tile + delta) ? GetWaterClass(tile + delta) : WATER_CLASS_CANAL;
    00279
    00280   if (!IsWaterTile(tile + delta)) {
    00281     ret = DoCommand(tile + delta, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00282     if (ret.Failed()) return ret;
    00283     cost.AddCost(ret);
    00284     cost.AddCost(_price[PR_BUILD_CANAL]);
    00285   }
    00286   if (GetTileSlope(tile + delta) != SLOPE_FLAT) {
    00287     return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
    00288   }
    00289
    00290   if ((MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) ||
    00291       (MayHaveBridgeAbove(tile - delta) && IsBridgeAbove(tile - delta)) ||
    00292       (MayHaveBridgeAbove(tile + delta) && IsBridgeAbove(tile + delta))) {
    00293     return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    00294   }
    00295
    00296   if (flags & DC_EXEC) {
    00297     /* Update company infrastructure counts. */
    00298     Company *c = Company::GetIfValid(_current_company);
    00299     if (c != NULL) {
    00300       /* Counts for the water. */
    00301       if (!IsWaterTile(tile - delta)) c->infrastructure.water++;
    00302       if (!IsWaterTile(tile + delta)) c->infrastructure.water++;
    00303       /* Count for the lock itself. */
    00304       c->infrastructure.water += 3 * LOCK_DEPOT_TILE_FACTOR; // Lock is three tiles.
    00305       DirtyCompanyInfrastructureWindows(_current_company);
    00306     }
    00307
    00308     MakeLock(tile, _current_company, dir, wc_lower, wc_upper, wc_middle);
    00309     MarkTileDirtyByTile(tile);
    00310     MarkTileDirtyByTile(tile - delta);
    00311     MarkTileDirtyByTile(tile + delta);
    00312     MarkCanalsAndRiversAroundDirty(tile - delta);
    00313     MarkCanalsAndRiversAroundDirty(tile + delta);
    00314   }
    00315   cost.AddCost(_price[PR_BUILD_LOCK]);
    00316
    00317   return cost;
    00318 }
    00319
    00326 static CommandCost RemoveLock(TileIndex tile, DoCommandFlag flags)
    00327 {
    00328   if (GetTileOwner(tile) != OWNER_NONE) {
    00329     CommandCost ret = CheckTileOwnership(tile);
    00330     if (ret.Failed()) return ret;
    00331   }
    00332
    00333   TileIndexDiff delta = TileOffsByDiagDir(GetLockDirection(tile));
    00334
    00335   /* make sure no vehicle is on the tile. */
    00336   CommandCost ret = EnsureNoVehicleOnGround(tile);
    00337   if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile + delta);
    00338   if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile - delta);
    00339   if (ret.Failed()) return ret;
    00340
    00341   if (flags & DC_EXEC) {
    00342     /* Remove middle part from company infrastructure count. */
    00343     Company *c = Company::GetIfValid(GetTileOwner(tile));
    00344     if (c != NULL) {
    00345       c->infrastructure.water -= 3 * LOCK_DEPOT_TILE_FACTOR; // three parts of the lock.
    00346       DirtyCompanyInfrastructureWindows(c->index);
    00347     }
    00348
    00349     if (GetWaterClass(tile) == WATER_CLASS_RIVER) {
    00350       MakeRiver(tile, Random());
    00351     } else {
    00352       DoClearSquare(tile);
    00353     }
    00354     MakeWaterKeepingClass(tile + delta, GetTileOwner(tile + delta));
    00355     MakeWaterKeepingClass(tile - delta, GetTileOwner(tile - delta));
    00356     MarkCanalsAndRiversAroundDirty(tile);
    00357     MarkCanalsAndRiversAroundDirty(tile - delta);
    00358     MarkCanalsAndRiversAroundDirty(tile + delta);
    00359   }
    00360
    00361   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_LOCK]);
    00362 }
    00363
    00373 CommandCost CmdBuildLock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00374 {
    00375   DiagDirection dir = GetInclinedSlopeDirection(GetTileSlope(tile));
    00376   if (dir == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
    00377
    00378   return DoBuildLock(tile, dir, flags);
    00379 }
    00380
    00382 bool RiverModifyDesertZone(TileIndex tile, void *)
    00383 {
    00384   if (GetTropicZone(tile) == TROPICZONE_DESERT) SetTropicZone(tile, TROPICZONE_NORMAL);
    00385   return false;
    00386 }
    00387
    00397 CommandCost CmdBuildCanal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00398 {
    00399   WaterClass wc = Extract<WaterClass, 0, 2>(p2);
    00400   if (p1 >= MapSize() || wc == WATER_CLASS_INVALID) return CMD_ERROR;
    00401
    00402   /* Outside of the editor you can only build canals, not oceans */
    00403   if (wc != WATER_CLASS_CANAL && _game_mode != GM_EDITOR) return CMD_ERROR;
    00404
    00405   TileArea ta(tile, p1);
    00406
    00407   /* Outside the editor you can only drag canals, and not areas */
    00408   if (_game_mode != GM_EDITOR && ta.w != 1 && ta.h != 1) return CMD_ERROR;
    00409
    00410   CommandCost cost(EXPENSES_CONSTRUCTION);
    00411   TILE_AREA_LOOP(tile, ta) {
    00412     CommandCost ret;
    00413
    00414     Slope slope = GetTileSlope(tile);
    00415     if (slope != SLOPE_FLAT && (wc != WATER_CLASS_RIVER || !IsInclinedSlope(slope))) {
    00416       return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00417     }
    00418
    00419     /* can't make water of water! */
    00420     if (IsTileType(tile, MP_WATER) && (!IsTileOwner(tile, OWNER_WATER) || wc == WATER_CLASS_SEA)) continue;
    00421
    00422     bool water = IsWaterTile(tile);
    00423     ret = DoCommand(tile, 0, 0, flags | DC_FORCE_CLEAR_TILE, CMD_LANDSCAPE_CLEAR);
    00424     if (ret.Failed()) return ret;
    00425
    00426     if (!water) cost.AddCost(ret);
    00427
    00428     if (flags & DC_EXEC) {
    00429       switch (wc) {
    00430         case WATER_CLASS_RIVER:
    00431           MakeRiver(tile, Random());
    00432           if (_game_mode == GM_EDITOR) {
    00433             TileIndex tile2 = tile;
    00434             CircularTileSearch(&tile2, 5, RiverModifyDesertZone, NULL);
    00435           }
    00436           break;
    00437
    00438         case WATER_CLASS_SEA:
    00439           if (TileHeight(tile) == 0) {
    00440             MakeSea(tile);
    00441             break;
    00442           }
    00443           /* FALL THROUGH */
    00444
    00445         default:
    00446           MakeCanal(tile, _current_company, Random());
    00447           if (Company::IsValidID(_current_company)) {
    00448             Company::Get(_current_company)->infrastructure.water++;
    00449             DirtyCompanyInfrastructureWindows(_current_company);
    00450           }
    00451           break;
    00452       }
    00453       MarkTileDirtyByTile(tile);
    00454       MarkCanalsAndRiversAroundDirty(tile);
    00455     }
    00456
    00457     cost.AddCost(_price[PR_BUILD_CANAL]);
    00458   }
    00459
    00460   if (cost.GetCost() == 0) {
    00461     return_cmd_error(STR_ERROR_ALREADY_BUILT);
    00462   } else {
    00463     return cost;
    00464   }
    00465 }
    00466
    00467 static CommandCost ClearTile_Water(TileIndex tile, DoCommandFlag flags)
    00468 {
    00469   switch (GetWaterTileType(tile)) {
    00470     case WATER_TILE_CLEAR: {
    00471       if (flags & DC_NO_WATER) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
    00472
    00473       Money base_cost = IsCanal(tile) ? _price[PR_CLEAR_CANAL] : _price[PR_CLEAR_WATER];
    00474       /* Make sure freeform edges are allowed or it's not an edge tile. */
    00475       if (!_settings_game.construction.freeform_edges && (!IsInsideMM(TileX(tile), 1, MapMaxX() - 1) ||
    00476           !IsInsideMM(TileY(tile), 1, MapMaxY() - 1))) {
    00477         return_cmd_error(STR_ERROR_TOO_CLOSE_TO_EDGE_OF_MAP);
    00478       }
    00479
    00480       /* Make sure no vehicle is on the tile */
    00481       CommandCost ret = EnsureNoVehicleOnGround(tile);
    00482       if (ret.Failed()) return ret;
    00483
    00484       Owner owner = GetTileOwner(tile);
    00485       if (owner != OWNER_WATER && owner != OWNER_NONE) {
    00486         CommandCost ret = CheckTileOwnership(tile);
    00487         if (ret.Failed()) return ret;
    00488       }
    00489
    00490       if (flags & DC_EXEC) {
    00491         if (IsCanal(tile) && Company::IsValidID(owner)) {
    00492           Company::Get(owner)->infrastructure.water--;
    00493           DirtyCompanyInfrastructureWindows(owner);
    00494         }
    00495         DoClearSquare(tile);
    00496         MarkCanalsAndRiversAroundDirty(tile);
    00497       }
    00498
    00499       return CommandCost(EXPENSES_CONSTRUCTION, base_cost);
    00500     }
    00501
    00502     case WATER_TILE_COAST: {
    00503       Slope slope = GetTileSlope(tile);
    00504
    00505       /* Make sure no vehicle is on the tile */
    00506       CommandCost ret = EnsureNoVehicleOnGround(tile);
    00507       if (ret.Failed()) return ret;
    00508
    00509       if (flags & DC_EXEC) {
    00510         DoClearSquare(tile);
    00511         MarkCanalsAndRiversAroundDirty(tile);
    00512       }
    00513       if (IsSlopeWithOneCornerRaised(slope)) {
    00514         return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_WATER]);
    00515       } else {
    00516         return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_ROUGH]);
    00517       }
    00518     }
    00519
    00520     case WATER_TILE_LOCK: {
    00521       static const TileIndexDiffC _lock_tomiddle_offs[][DIAGDIR_END] = {
    00522         /*   NE       SE        SW      NW       */
    00523         { { 0,  0}, {0,  0}, { 0, 0}, {0,  0} }, // LOCK_PART_MIDDLE
    00524         { {-1,  0}, {0,  1}, { 1, 0}, {0, -1} }, // LOCK_PART_LOWER
    00525         { { 1,  0}, {0, -1}, {-1, 0}, {0,  1} }, // LOCK_PART_UPPER
    00526       };
    00527
    00528       if (flags & DC_AUTO) return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    00529       if (_current_company == OWNER_WATER) return CMD_ERROR;
    00530       /* move to the middle tile.. */
    00531       return RemoveLock(tile + ToTileIndexDiff(_lock_tomiddle_offs[GetLockPart(tile)][GetLockDirection(tile)]), flags);
    00532     }
    00533
    00534     case WATER_TILE_DEPOT:
    00535       if (flags & DC_AUTO) return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    00536       return RemoveShipDepot(tile, flags);
    00537
    00538     default:
    00539       NOT_REACHED();
    00540   }
    00541 }
    00542
    00551 static bool IsWateredTile(TileIndex tile, Direction from)
    00552 {
    00553   switch (GetTileType(tile)) {
    00554     case MP_WATER:
    00555       switch (GetWaterTileType(tile)) {
    00556         default: NOT_REACHED();
    00557         case WATER_TILE_DEPOT: case WATER_TILE_CLEAR: return true;
    00558         case WATER_TILE_LOCK: return DiagDirToAxis(GetLockDirection(tile)) == DiagDirToAxis(DirToDiagDir(from));
    00559
    00560         case WATER_TILE_COAST:
    00561           switch (GetTileSlope(tile)) {
    00562             case SLOPE_W: return (from == DIR_SE) || (from == DIR_E) || (from == DIR_NE);
    00563             case SLOPE_S: return (from == DIR_NE) || (from == DIR_N) || (from == DIR_NW);
    00564             case SLOPE_E: return (from == DIR_NW) || (from == DIR_W) || (from == DIR_SW);
    00565             case SLOPE_N: return (from == DIR_SW) || (from == DIR_S) || (from == DIR_SE);
    00566             default: return false;
    00567           }
    00568       }
    00569
    00570     case MP_RAILWAY:
    00571       if (GetRailGroundType(tile) == RAIL_GROUND_WATER) {
    00572         assert(IsPlainRail(tile));
    00573         switch (GetTileSlope(tile)) {
    00574           case SLOPE_W: return (from == DIR_SE) || (from == DIR_E) || (from == DIR_NE);
    00575           case SLOPE_S: return (from == DIR_NE) || (from == DIR_N) || (from == DIR_NW);
    00576           case SLOPE_E: return (from == DIR_NW) || (from == DIR_W) || (from == DIR_SW);
    00577           case SLOPE_N: return (from == DIR_SW) || (from == DIR_S) || (from == DIR_SE);
    00578           default: return false;
    00579         }
    00580       }
    00581       return false;
    00582
    00583     case MP_STATION:
    00584       if (IsOilRig(tile)) {
    00585         /* Do not draw waterborders inside of industries.
    00586          * Note: There is no easy way to detect the industry of an oilrig tile. */
    00587         TileIndex src_tile = tile + TileOffsByDir(from);
    00588         if ((IsTileType(src_tile, MP_STATION) && IsOilRig(src_tile)) ||
    00589             (IsTileType(src_tile, MP_INDUSTRY))) return true;
    00590
    00591         return IsTileOnWater(tile);
    00592       }
    00593       return (IsDock(tile) && GetTileSlope(tile) == SLOPE_FLAT) || IsBuoy(tile);
    00594
    00595     case MP_INDUSTRY: {
    00596       /* Do not draw waterborders inside of industries.
    00597        * Note: There is no easy way to detect the industry of an oilrig tile. */
    00598       TileIndex src_tile = tile + TileOffsByDir(from);
    00599       if ((IsTileType(src_tile, MP_STATION) && IsOilRig(src_tile)) ||
    00600           (IsTileType(src_tile, MP_INDUSTRY) && GetIndustryIndex(src_tile) == GetIndustryIndex(tile))) return true;
    00601
    00602       return IsTileOnWater(tile);
    00603     }
    00604
    00605     case MP_OBJECT: return IsTileOnWater(tile);
    00606
    00607     case MP_TUNNELBRIDGE: return GetTunnelBridgeTransportType(tile) == TRANSPORT_WATER && ReverseDiagDir(GetTunnelBridgeDirection(tile)) == DirToDiagDir(from);
    00608
    00609     default:          return false;
    00610   }
    00611 }
    00612
    00620 static void DrawWaterSprite(SpriteID base, uint offset, CanalFeature feature, TileIndex tile)
    00621 {
    00622   if (base != SPR_FLAT_WATER_TILE) {
    00623     /* Only call offset callback if the sprite is NewGRF-provided. */
    00624     offset = GetCanalSpriteOffset(feature, tile, offset);
    00625   }
    00626   DrawGroundSprite(base + offset, PAL_NONE);
    00627 }
    00628
    00635 static void DrawWaterEdges(bool canal, uint offset, TileIndex tile)
    00636 {
    00637   CanalFeature feature;
    00638   SpriteID base = 0;
    00639   if (canal) {
    00640     feature = CF_DIKES;
    00641     base = GetCanalSprite(CF_DIKES, tile);
    00642     if (base == 0) base = SPR_CANAL_DIKES_BASE;
    00643   } else {
    00644     feature = CF_RIVER_EDGE;
    00645     base = GetCanalSprite(CF_RIVER_EDGE, tile);
    00646     if (base == 0) return; // Don't draw if no sprites provided.
    00647   }
    00648
    00649   uint wa;
    00650
    00651   /* determine the edges around with water. */
    00652   wa  = IsWateredTile(TILE_ADDXY(tile, -1,  0), DIR_SW) << 0;
    00653   wa += IsWateredTile(TILE_ADDXY(tile,  0,  1), DIR_NW) << 1;
    00654   wa += IsWateredTile(TILE_ADDXY(tile,  1,  0), DIR_NE) << 2;
    00655   wa += IsWateredTile(TILE_ADDXY(tile,  0, -1), DIR_SE) << 3;
    00656
    00657   if (!(wa & 1)) DrawWaterSprite(base, offset,     feature, tile);
    00658   if (!(wa & 2)) DrawWaterSprite(base, offset + 1, feature, tile);
    00659   if (!(wa & 4)) DrawWaterSprite(base, offset + 2, feature, tile);
    00660   if (!(wa & 8)) DrawWaterSprite(base, offset + 3, feature, tile);
    00661
    00662   /* right corner */
    00663   switch (wa & 0x03) {
    00664     case 0: DrawWaterSprite(base, offset + 4, feature, tile); break;
    00665     case 3: if (!IsWateredTile(TILE_ADDXY(tile, -1, 1), DIR_W)) DrawWaterSprite(base, offset + 8, feature, tile); break;
    00666   }
    00667
    00668   /* bottom corner */
    00669   switch (wa & 0x06) {
    00670     case 0: DrawWaterSprite(base, offset + 5, feature, tile); break;
    00671     case 6: if (!IsWateredTile(TILE_ADDXY(tile, 1, 1), DIR_N)) DrawWaterSprite(base, offset + 9, feature, tile); break;
    00672   }
    00673
    00674   /* left corner */
    00675   switch (wa & 0x0C) {
    00676     case  0: DrawWaterSprite(base, offset + 6, feature, tile); break;
    00677     case 12: if (!IsWateredTile(TILE_ADDXY(tile, 1, -1), DIR_E)) DrawWaterSprite(base, offset + 10, feature, tile); break;
    00678   }
    00679
    00680   /* upper corner */
    00681   switch (wa & 0x09) {
    00682     case 0: DrawWaterSprite(base, offset + 7, feature, tile); break;
    00683     case 9: if (!IsWateredTile(TILE_ADDXY(tile, -1, -1), DIR_S)) DrawWaterSprite(base, offset + 11, feature, tile); break;
    00684   }
    00685 }
    00686
    00688 static void DrawSeaWater(TileIndex tile)
    00689 {
    00690   DrawGroundSprite(SPR_FLAT_WATER_TILE, PAL_NONE);
    00691 }
    00692
    00694 static void DrawCanalWater(TileIndex tile)
    00695 {
    00696   SpriteID image = SPR_FLAT_WATER_TILE;
    00697   if (HasBit(_water_feature[CF_WATERSLOPE].flags, CFF_HAS_FLAT_SPRITE)) {
    00698     /* First water slope sprite is flat water. */
    00699     image = GetCanalSprite(CF_WATERSLOPE, tile);
    00700     if (image == 0) image = SPR_FLAT_WATER_TILE;
    00701   }
    00702   DrawWaterSprite(image, 0, CF_WATERSLOPE, tile);
    00703
    00704   DrawWaterEdges(true, 0, tile);
    00705 }
    00706
    00707 #include "table/water_land.h"
    00708
    00718 static void DrawWaterTileStruct(const TileInfo *ti, const DrawTileSeqStruct *dtss, SpriteID base, uint offset, PaletteID palette, CanalFeature feature)
    00719 {
    00720   /* Don't draw if buildings are invisible. */
    00721   if (IsInvisibilitySet(TO_BUILDINGS)) return;
    00722
    00723   for (; !dtss->IsTerminator(); dtss++) {
    00724     uint tile_offs = offset + dtss->image.sprite;
    00725     if (feature < CF_END) tile_offs = GetCanalSpriteOffset(feature, ti->tile, tile_offs);
    00726     AddSortableSpriteToDraw(base + tile_offs, palette,
    00727       ti->x + dtss->delta_x, ti->y + dtss->delta_y,
    00728       dtss->size_x, dtss->size_y,
    00729       dtss->size_z, ti->z + dtss->delta_z,
    00730       IsTransparencySet(TO_BUILDINGS));
    00731   }
    00732 }
    00733
    00735 static void DrawWaterLock(const TileInfo *ti)
    00736 {
    00737   int part = GetLockPart(ti->tile);
    00738   const DrawTileSprites &dts = _lock_display_data[part][GetLockDirection(ti->tile)];
    00739
    00740   /* Draw ground sprite. */
    00741   SpriteID image = dts.ground.sprite;
    00742
    00743   SpriteID water_base = GetCanalSprite(CF_WATERSLOPE, ti->tile);
    00744   if (water_base == 0) {
    00745     /* Use default sprites. */
    00746     water_base = SPR_CANALS_BASE;
    00747   } else if (HasBit(_water_feature[CF_WATERSLOPE].flags, CFF_HAS_FLAT_SPRITE)) {
    00748     /* NewGRF supplies a flat sprite as first sprite. */
    00749     if (image == SPR_FLAT_WATER_TILE) {
    00750       image = water_base;
    00751     } else {
    00752       image++;
    00753     }
    00754   }
    00755
    00756   if (image < 5) image += water_base;
    00757   DrawGroundSprite(image, PAL_NONE);
    00758
    00759   /* Draw structures. */
    00760   uint     zoffs = 0;
    00761   SpriteID base  = GetCanalSprite(CF_LOCKS, ti->tile);
    00762
    00763   if (base == 0) {
    00764     /* If no custom graphics, use defaults. */
    00765     base = SPR_LOCK_BASE;
    00766     uint8 z_threshold = part == LOCK_PART_UPPER ? 8 : 0;
    00767     zoffs = ti->z > z_threshold ? 24 : 0;
    00768   }
    00769
    00770   DrawWaterTileStruct(ti, dts.seq, base, zoffs, PAL_NONE, CF_LOCKS);
    00771 }
    00772
    00774 static void DrawWaterDepot(const TileInfo *ti)
    00775 {
    00776   DrawWaterClassGround(ti);
    00777   DrawWaterTileStruct(ti, _shipdepot_display_data[GetShipDepotAxis(ti->tile)][GetShipDepotPart(ti->tile)].seq, 0, 0, COMPANY_SPRITE_COLOUR(GetTileOwner(ti->tile)), CF_END);
    00778 }
    00779
    00780 static void DrawRiverWater(const TileInfo *ti)
    00781 {
    00782   SpriteID image = SPR_FLAT_WATER_TILE;
    00783   uint     offset = 0;
    00784   uint     edges_offset = 0;
    00785
    00786   if (ti->tileh != SLOPE_FLAT || HasBit(_water_feature[CF_RIVER_SLOPE].flags, CFF_HAS_FLAT_SPRITE)) {
    00787     image = GetCanalSprite(CF_RIVER_SLOPE, ti->tile);
    00788     if (image == 0) {
    00789       switch (ti->tileh) {
    00790         case SLOPE_NW: image = SPR_WATER_SLOPE_Y_DOWN; break;
    00791         case SLOPE_SW: image = SPR_WATER_SLOPE_X_UP;   break;
    00792         case SLOPE_SE: image = SPR_WATER_SLOPE_Y_UP;   break;
    00793         case SLOPE_NE: image = SPR_WATER_SLOPE_X_DOWN; break;
    00794         default:       image = SPR_FLAT_WATER_TILE;    break;
    00795       }
    00796     } else {
    00797       /* Flag bit 0 indicates that the first sprite is flat water. */
    00798       offset = HasBit(_water_feature[CF_RIVER_SLOPE].flags, CFF_HAS_FLAT_SPRITE) ? 1 : 0;
    00799
    00800       switch (ti->tileh) {
    00801         case SLOPE_SE:              edges_offset += 12; break;
    00802         case SLOPE_NE: offset += 1; edges_offset += 24; break;
    00803         case SLOPE_SW: offset += 2; edges_offset += 36; break;
    00804         case SLOPE_NW: offset += 3; edges_offset += 48; break;
    00805         default:       offset  = 0; break;
    00806       }
    00807
    00808       offset = GetCanalSpriteOffset(CF_RIVER_SLOPE, ti->tile, offset);
    00809     }
    00810   }
    00811
    00812   DrawGroundSprite(image + offset, PAL_NONE);
    00813
    00814   /* Draw river edges if available. */
    00815   DrawWaterEdges(false, edges_offset, ti->tile);
    00816 }
    00817
    00818 void DrawShoreTile(Slope tileh)
    00819 {
    00820   /* Converts the enum Slope into an offset based on SPR_SHORE_BASE.
    00821    * This allows to calculate the proper sprite to display for this Slope */
    00822   static const byte tileh_to_shoresprite[32] = {
    00823     0, 1, 2, 3, 4, 16, 6, 7, 8, 9, 17, 11, 12, 13, 14, 0,
    00824     0, 0, 0, 0, 0,  0, 0, 0, 0, 0,  0,  5,  0, 10, 15, 0,
    00825   };
    00826
    00827   assert(!IsHalftileSlope(tileh)); // Halftile slopes need to get handled earlier.
    00828   assert(tileh != SLOPE_FLAT);     // Shore is never flat
    00829
    00830   assert((tileh != SLOPE_EW) && (tileh != SLOPE_NS)); // No suitable sprites for current flooding behaviour
    00831
    00832   DrawGroundSprite(SPR_SHORE_BASE + tileh_to_shoresprite[tileh], PAL_NONE);
    00833 }
    00834
    00835 void DrawWaterClassGround(const TileInfo *ti)
    00836 {
    00837   switch (GetWaterClass(ti->tile)) {
    00838     case WATER_CLASS_SEA:   DrawSeaWater(ti->tile); break;
    00839     case WATER_CLASS_CANAL: DrawCanalWater(ti->tile); break;
    00840     case WATER_CLASS_RIVER: DrawRiverWater(ti); break;
    00841     default: NOT_REACHED();
    00842   }
    00843 }
    00844
    00845 static void DrawTile_Water(TileInfo *ti)
    00846 {
    00847   switch (GetWaterTileType(ti->tile)) {
    00848     case WATER_TILE_CLEAR:
    00849       DrawWaterClassGround(ti);
    00850       DrawBridgeMiddle(ti);
    00851       break;
    00852
    00853     case WATER_TILE_COAST: {
    00854       DrawShoreTile(ti->tileh);
    00855       DrawBridgeMiddle(ti);
    00856       break;
    00857     }
    00858
    00859     case WATER_TILE_LOCK:
    00860       DrawWaterLock(ti);
    00861       break;
    00862
    00863     case WATER_TILE_DEPOT:
    00864       DrawWaterDepot(ti);
    00865       break;
    00866   }
    00867 }
    00868
    00869 void DrawShipDepotSprite(int x, int y, Axis axis, DepotPart part)
    00870 {
    00871   const DrawTileSprites &dts = _shipdepot_display_data[axis][part];
    00872
    00873   DrawSprite(dts.ground.sprite, dts.ground.pal, x, y);
    00874   DrawOrigTileSeqInGUI(x, y, &dts, COMPANY_SPRITE_COLOUR(_local_company));
    00875 }
    00876
    00877
    00878 static int GetSlopePixelZ_Water(TileIndex tile, uint x, uint y)
    00879 {
    00880   int z;
    00881   Slope tileh = GetTilePixelSlope(tile, &z);
    00882
    00883   return z + GetPartialPixelZ(x & 0xF, y & 0xF, tileh);
    00884 }
    00885
    00886 static Foundation GetFoundation_Water(TileIndex tile, Slope tileh)
    00887 {
    00888   return FOUNDATION_NONE;
    00889 }
    00890
    00891 static void GetTileDesc_Water(TileIndex tile, TileDesc *td)
    00892 {
    00893   switch (GetWaterTileType(tile)) {
    00894     case WATER_TILE_CLEAR:
    00895       switch (GetWaterClass(tile)) {
    00896         case WATER_CLASS_SEA:   td->str = STR_LAI_WATER_DESCRIPTION_WATER; break;
    00897         case WATER_CLASS_CANAL: td->str = STR_LAI_WATER_DESCRIPTION_CANAL; break;
    00898         case WATER_CLASS_RIVER: td->str = STR_LAI_WATER_DESCRIPTION_RIVER; break;
    00899         default: NOT_REACHED(); break;
    00900       }
    00901       break;
    00902     case WATER_TILE_COAST: td->str = STR_LAI_WATER_DESCRIPTION_COAST_OR_RIVERBANK; break;
    00903     case WATER_TILE_LOCK : td->str = STR_LAI_WATER_DESCRIPTION_LOCK;               break;
    00904     case WATER_TILE_DEPOT:
    00905       td->str = STR_LAI_WATER_DESCRIPTION_SHIP_DEPOT;
    00906       td->build_date = Depot::GetByTile(tile)->build_date;
    00907       break;
    00908     default: NOT_REACHED(); break;
    00909   }
    00910
    00911   td->owner[0] = GetTileOwner(tile);
    00912 }
    00913
    00919 static void FloodVehicle(Vehicle *v)
    00920 {
    00921   uint pass = v->Crash(true);
    00922
    00923   AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_FLOODED));
    00924   Game::NewEvent(new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_FLOODED));
    00925   SetDParam(0, pass);
    00926   AddVehicleNewsItem(STR_NEWS_DISASTER_FLOOD_VEHICLE, NT_ACCIDENT, v->index);
    00927   CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
    00928   if (_settings_client.sound.disaster) SndPlayVehicleFx(SND_12_EXPLOSION, v);
    00929 }
    00930
    00937 static Vehicle *FloodVehicleProc(Vehicle *v, void *data)
    00938 {
    00939   if ((v->vehstatus & VS_CRASHED) != 0) return NULL;
    00940
    00941   switch (v->type) {
    00942     default: break;
    00943
    00944     case VEH_AIRCRAFT: {
    00945       if (!IsAirportTile(v->tile) || GetTileMaxZ(v->tile) != 0) break;
    00946       if (v->subtype == AIR_SHADOW) break;
    00947
    00948       /* We compare v->z_pos against delta_z + 1 because the shadow
    00949        * is at delta_z and the actual aircraft at delta_z + 1. */
    00950       const Station *st = Station::GetByTile(v->tile);
    00951       const AirportFTAClass *airport = st->airport.GetFTA();
    00952       if (v->z_pos != airport->delta_z + 1) break;
    00953
    00954       FloodVehicle(v);
    00955       break;
    00956     }
    00957
    00958     case VEH_TRAIN:
    00959     case VEH_ROAD: {
    00960       int z = *(int*)data;
    00961       if (v->z_pos > z) break;
    00962       FloodVehicle(v->First());
    00963       break;
    00964     }
    00965   }
    00966
    00967   return NULL;
    00968 }
    00969
    00975 static void FloodVehicles(TileIndex tile)
    00976 {
    00977   int z = 0;
    00978
    00979   if (IsAirportTile(tile)) {
    00980     const Station *st = Station::GetByTile(tile);
    00981     TILE_AREA_LOOP(tile, st->airport) {
    00982       if (st->TileBelongsToAirport(tile)) FindVehicleOnPos(tile, &z, &FloodVehicleProc);
    00983     }
    00984
    00985     /* No vehicle could be flooded on this airport anymore */
    00986     return;
    00987   }
    00988
    00989   if (!IsBridgeTile(tile)) {
    00990     FindVehicleOnPos(tile, &z, &FloodVehicleProc);
    00991     return;
    00992   }
    00993
    00994   TileIndex end = GetOtherBridgeEnd(tile);
    00995   z = GetBridgePixelHeight(tile);
    00996
    00997   FindVehicleOnPos(tile, &z, &FloodVehicleProc);
    00998   FindVehicleOnPos(end, &z, &FloodVehicleProc);
    00999 }
    01000
    01006 FloodingBehaviour GetFloodingBehaviour(TileIndex tile)
    01007 {
    01008   /* FLOOD_ACTIVE:  'single-corner-raised'-coast, sea, sea-shipdepots, sea-buoys, sea-docks (water part), rail with flooded halftile, sea-water-industries, sea-oilrigs
    01009    * FLOOD_DRYUP:   coast with more than one corner raised, coast with rail-track, coast with trees
    01010    * FLOOD_PASSIVE: (not used)
    01011    * FLOOD_NONE:    canals, rivers, everything else
    01012    */
    01013   switch (GetTileType(tile)) {
    01014     case MP_WATER:
    01015       if (IsCoast(tile)) {
    01016         Slope tileh = GetTileSlope(tile);
    01017         return (IsSlopeWithOneCornerRaised(tileh) ? FLOOD_ACTIVE : FLOOD_DRYUP);
    01018       }
    01019       /* FALL THROUGH */
    01020     case MP_STATION:
    01021     case MP_INDUSTRY:
    01022     case MP_OBJECT:
    01023       return (GetWaterClass(tile) == WATER_CLASS_SEA) ? FLOOD_ACTIVE : FLOOD_NONE;
    01024
    01025     case MP_RAILWAY:
    01026       if (GetRailGroundType(tile) == RAIL_GROUND_WATER) {
    01027         return (IsSlopeWithOneCornerRaised(GetTileSlope(tile)) ? FLOOD_ACTIVE : FLOOD_DRYUP);
    01028       }
    01029       return FLOOD_NONE;
    01030
    01031     case MP_TREES:
    01032       return (GetTreeGround(tile) == TREE_GROUND_SHORE ? FLOOD_DRYUP : FLOOD_NONE);
    01033
    01034     default:
    01035       return FLOOD_NONE;
    01036   }
    01037 }
    01038
    01042 void DoFloodTile(TileIndex target)
    01043 {
    01044   assert(!IsTileType(target, MP_WATER));
    01045
    01046   bool flooded = false; // Will be set to true if something is changed.
    01047
    01048   Backup<CompanyByte> cur_company(_current_company, OWNER_WATER, FILE_LINE);
    01049
    01050   Slope tileh = GetTileSlope(target);
    01051   if (tileh != SLOPE_FLAT) {
    01052     /* make coast.. */
    01053     switch (GetTileType(target)) {
    01054       case MP_RAILWAY: {
    01055         if (!IsPlainRail(target)) break;
    01056         FloodVehicles(target);
    01057         flooded = FloodHalftile(target);
    01058         break;
    01059       }
    01060
    01061       case MP_TREES:
    01062         if (!IsSlopeWithOneCornerRaised(tileh)) {
    01063           SetTreeGroundDensity(target, TREE_GROUND_SHORE, 3);
    01064           MarkTileDirtyByTile(target);
    01065           flooded = true;
    01066           break;
    01067         }
    01068         /* FALL THROUGH */
    01069
    01070       case MP_CLEAR:
    01071         if (DoCommand(target, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR).Succeeded()) {
    01072           MakeShore(target);
    01073           MarkTileDirtyByTile(target);
    01074           flooded = true;
    01075         }
    01076         break;
    01077
    01078       default:
    01079         break;
    01080     }
    01081   } else {
    01082     /* Flood vehicles */
    01083     FloodVehicles(target);
    01084
    01085     /* flood flat tile */
    01086     if (DoCommand(target, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR).Succeeded()) {
    01087       MakeSea(target);
    01088       MarkTileDirtyByTile(target);
    01089       flooded = true;
    01090     }
    01091   }
    01092
    01093   if (flooded) {
    01094     /* Mark surrounding canal tiles dirty too to avoid glitches */
    01095     MarkCanalsAndRiversAroundDirty(target);
    01096
    01097     /* update signals if needed */
    01098     UpdateSignalsInBuffer();
    01099   }
    01100
    01101   cur_company.Restore();
    01102 }
    01103
    01107 static void DoDryUp(TileIndex tile)
    01108 {
    01109   Backup<CompanyByte> cur_company(_current_company, OWNER_WATER, FILE_LINE);
    01110
    01111   switch (GetTileType(tile)) {
    01112     case MP_RAILWAY:
    01113       assert(IsPlainRail(tile));
    01114       assert(GetRailGroundType(tile) == RAIL_GROUND_WATER);
    01115
    01116       RailGroundType new_ground;
    01117       switch (GetTrackBits(tile)) {
    01118         case TRACK_BIT_UPPER: new_ground = RAIL_GROUND_FENCE_HORIZ1; break;
    01119         case TRACK_BIT_LOWER: new_ground = RAIL_GROUND_FENCE_HORIZ2; break;
    01120         case TRACK_BIT_LEFT:  new_ground = RAIL_GROUND_FENCE_VERT1;  break;
    01121         case TRACK_BIT_RIGHT: new_ground = RAIL_GROUND_FENCE_VERT2;  break;
    01122         default: NOT_REACHED();
    01123       }
    01124       SetRailGroundType(tile, new_ground);
    01125       MarkTileDirtyByTile(tile);
    01126       break;
    01127
    01128     case MP_TREES:
    01129       SetTreeGroundDensity(tile, TREE_GROUND_GRASS, 3);
    01130       MarkTileDirtyByTile(tile);
    01131       break;
    01132
    01133     case MP_WATER:
    01134       assert(IsCoast(tile));
    01135
    01136       if (DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR).Succeeded()) {
    01137         MakeClear(tile, CLEAR_GRASS, 3);
    01138         MarkTileDirtyByTile(tile);
    01139       }
    01140       break;
    01141
    01142     default: NOT_REACHED();
    01143   }
    01144
    01145   cur_company.Restore();
    01146 }
    01147
    01154 void TileLoop_Water(TileIndex tile)
    01155 {
    01156   if (IsTileType(tile, MP_WATER)) AmbientSoundEffect(tile);
    01157
    01158   switch (GetFloodingBehaviour(tile)) {
    01159     case FLOOD_ACTIVE:
    01160       for (Direction dir = DIR_BEGIN; dir < DIR_END; dir++) {
    01161         TileIndex dest = tile + TileOffsByDir(dir);
    01162         if (!IsValidTile(dest)) continue;
    01163         /* do not try to flood water tiles - increases performance a lot */
    01164         if (IsTileType(dest, MP_WATER)) continue;
    01165
    01166         int z_dest;
    01167         Slope slope_dest = GetFoundationSlope(dest, &z_dest) & ~SLOPE_HALFTILE_MASK & ~SLOPE_STEEP;
    01168         if (z_dest > 0) continue;
    01169
    01170         if (!HasBit(_flood_from_dirs[slope_dest], ReverseDir(dir))) continue;
    01171
    01172         DoFloodTile(dest);
    01173       }
    01174       break;
    01175
    01176     case FLOOD_DRYUP: {
    01177       Slope slope_here = GetFoundationSlope(tile) & ~SLOPE_HALFTILE_MASK & ~SLOPE_STEEP;
    01178       uint dir;
    01179       FOR_EACH_SET_BIT(dir, _flood_from_dirs[slope_here]) {
    01180         TileIndex dest = tile + TileOffsByDir((Direction)dir);
    01181         if (!IsValidTile(dest)) continue;
    01182
    01183         FloodingBehaviour dest_behaviour = GetFloodingBehaviour(dest);
    01184         if ((dest_behaviour == FLOOD_ACTIVE) || (dest_behaviour == FLOOD_PASSIVE)) return;
    01185       }
    01186       DoDryUp(tile);
    01187       break;
    01188     }
    01189
    01190     default: return;
    01191   }
    01192 }
    01193
    01194 void ConvertGroundTilesIntoWaterTiles()
    01195 {
    01196   int z;
    01197
    01198   for (TileIndex tile = 0; tile < MapSize(); ++tile) {
    01199     Slope slope = GetTileSlope(tile, &z);
    01200     if (IsTileType(tile, MP_CLEAR) && z == 0) {
    01201       /* Make both water for tiles at level 0
    01202        * and make shore, as that looks much better
    01203        * during the generation. */
    01204       switch (slope) {
    01205         case SLOPE_FLAT:
    01206           MakeSea(tile);
    01207           break;
    01208
    01209         case SLOPE_N:
    01210         case SLOPE_E:
    01211         case SLOPE_S:
    01212         case SLOPE_W:
    01213           MakeShore(tile);
    01214           break;
    01215
    01216         default:
    01217           uint dir;
    01218           FOR_EACH_SET_BIT(dir, _flood_from_dirs[slope & ~SLOPE_STEEP]) {
    01219             TileIndex dest = TILE_ADD(tile, TileOffsByDir((Direction)dir));
    01220             Slope slope_dest = GetTileSlope(dest) & ~SLOPE_STEEP;
    01221             if (slope_dest == SLOPE_FLAT || IsSlopeWithOneCornerRaised(slope_dest)) {
    01222               MakeShore(tile);
    01223               break;
    01224             }
    01225           }
    01226           break;
    01227       }
    01228     }
    01229   }
    01230 }
    01231
    01232 static TrackStatus GetTileTrackStatus_Water(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
    01233 {
    01234   static const byte coast_tracks[] = {0, 32, 4, 0, 16, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0};
    01235
    01236   TrackBits ts;
    01237
    01238   if (mode != TRANSPORT_WATER) return 0;
    01239
    01240   switch (GetWaterTileType(tile)) {
    01241     case WATER_TILE_CLEAR: ts = (GetTileSlope(tile) == SLOPE_FLAT) ? TRACK_BIT_ALL : TRACK_BIT_NONE; break;
    01242     case WATER_TILE_COAST: ts = (TrackBits)coast_tracks[GetTileSlope(tile) & 0xF]; break;
    01243     case WATER_TILE_LOCK:  ts = DiagDirToDiagTrackBits(GetLockDirection(tile)); break;
    01244     case WATER_TILE_DEPOT: ts = AxisToTrackBits(GetShipDepotAxis(tile)); break;
    01245     default: return 0;
    01246   }
    01247   if (TileX(tile) == 0) {
    01248     /* NE border: remove tracks that connects NE tile edge */
    01249     ts &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
    01250   }
    01251   if (TileY(tile) == 0) {
    01252     /* NW border: remove tracks that connects NW tile edge */
    01253     ts &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
    01254   }
    01255   return CombineTrackStatus(TrackBitsToTrackdirBits(ts), TRACKDIR_BIT_NONE);
    01256 }
    01257
    01258 static bool ClickTile_Water(TileIndex tile)
    01259 {
    01260   if (GetWaterTileType(tile) == WATER_TILE_DEPOT) {
    01261     ShowDepotWindow(GetShipDepotNorthTile(tile), VEH_SHIP);
    01262     return true;
    01263   }
    01264   return false;
    01265 }
    01266
    01267 static void ChangeTileOwner_Water(TileIndex tile, Owner old_owner, Owner new_owner)
    01268 {
    01269   if (!IsTileOwner(tile, old_owner)) return;
    01270
    01271   bool is_lock_middle = IsLock(tile) && GetLockPart(tile) == LOCK_PART_MIDDLE;
    01272
    01273   /* No need to dirty company windows here, we'll redraw the whole screen anyway. */
    01274   if (is_lock_middle) Company::Get(old_owner)->infrastructure.water -= 3 * LOCK_DEPOT_TILE_FACTOR; // Lock has three parts.
    01275   if (new_owner != INVALID_OWNER) {
    01276     if (is_lock_middle) Company::Get(new_owner)->infrastructure.water += 3 * LOCK_DEPOT_TILE_FACTOR; // Lock has three parts.
    01277     /* Only subtract from the old owner here if the new owner is valid,
    01278      * otherwise we clear ship depots and canal water below. */
    01279     if (GetWaterClass(tile) == WATER_CLASS_CANAL && !is_lock_middle) {
    01280       Company::Get(old_owner)->infrastructure.water--;
    01281       Company::Get(new_owner)->infrastructure.water++;
    01282     }
    01283     if (IsShipDepot(tile)) {
    01284       Company::Get(old_owner)->infrastructure.water -= LOCK_DEPOT_TILE_FACTOR;
    01285       Company::Get(new_owner)->infrastructure.water += LOCK_DEPOT_TILE_FACTOR;
    01286     }
    01287
    01288     SetTileOwner(tile, new_owner);
    01289     return;
    01290   }
    01291
    01292   /* Remove depot */
    01293   if (IsShipDepot(tile)) DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
    01294
    01295   /* Set owner of canals and locks ... and also canal under dock there was before.
    01296    * Check if the new owner after removing depot isn't OWNER_WATER. */
    01297   if (IsTileOwner(tile, old_owner)) {
    01298     if (GetWaterClass(tile) == WATER_CLASS_CANAL && !is_lock_middle) Company::Get(old_owner)->infrastructure.water--;
    01299     SetTileOwner(tile, OWNER_NONE);
    01300   }
    01301 }
    01302
    01303 static VehicleEnterTileStatus VehicleEnter_Water(Vehicle *v, TileIndex tile, int x, int y)
    01304 {
    01305   return VETSB_CONTINUE;
    01306 }
    01307
    01308 static CommandCost TerraformTile_Water(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
    01309 {
    01310   /* Canals can't be terraformed */
    01311   if (IsWaterTile(tile) && IsCanal(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_CANAL_FIRST);
    01312
    01313   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    01314 }
    01315
    01316
    01317 extern const TileTypeProcs _tile_type_water_procs = {
    01318   DrawTile_Water,           // draw_tile_proc
    01319   GetSlopePixelZ_Water,     // get_slope_z_proc
    01320   ClearTile_Water,          // clear_tile_proc
    01321   NULL,                     // add_accepted_cargo_proc
    01322   GetTileDesc_Water,        // get_tile_desc_proc
    01323   GetTileTrackStatus_Water, // get_tile_track_status_proc
    01324   ClickTile_Water,          // click_tile_proc
    01325   NULL,                     // animate_tile_proc
    01326   TileLoop_Water,           // tile_loop_proc
    01327   ChangeTileOwner_Water,    // change_tile_owner_proc
    01328   NULL,                     // add_produced_cargo_proc
    01329   VehicleEnter_Water,       // vehicle_enter_tile_proc
    01330   GetFoundation_Water,      // get_foundation_proc
    01331   TerraformTile_Water,      // terraform_tile_proc
    01332 };