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00014 #include "stdafx.h"
00015 #include "heightmap.h"
00016 #include "clear_map.h"
00017 #include "spritecache.h"
00018 #include "viewport_func.h"
00019 #include "command_func.h"
00020 #include "landscape.h"
00021 #include "void_map.h"
00022 #include "tgp.h"
00023 #include "genworld.h"
00024 #include "fios.h"
00025 #include "date_func.h"
00026 #include "water.h"
00027 #include "effectvehicle_func.h"
00028 #include "landscape_type.h"
00029 #include "animated_tile_func.h"
00030 #include "core/random_func.hpp"
00031 #include "object_base.h"
00032 #include "company_func.h"
00033 #include "pathfinder/npf/aystar.h"
00034 #include <list>
00035
00036 #include "table/strings.h"
00037 #include "table/sprites.h"
00038
00039 extern const TileTypeProcs
00040 _tile_type_clear_procs,
00041 _tile_type_rail_procs,
00042 _tile_type_road_procs,
00043 _tile_type_town_procs,
00044 _tile_type_trees_procs,
00045 _tile_type_station_procs,
00046 _tile_type_water_procs,
00047 _tile_type_void_procs,
00048 _tile_type_industry_procs,
00049 _tile_type_tunnelbridge_procs,
00050 _tile_type_object_procs;
00051
00057 const TileTypeProcs * const _tile_type_procs[16] = {
00058 &_tile_type_clear_procs,
00059 &_tile_type_rail_procs,
00060 &_tile_type_road_procs,
00061 &_tile_type_town_procs,
00062 &_tile_type_trees_procs,
00063 &_tile_type_station_procs,
00064 &_tile_type_water_procs,
00065 &_tile_type_void_procs,
00066 &_tile_type_industry_procs,
00067 &_tile_type_tunnelbridge_procs,
00068 &_tile_type_object_procs,
00069 };
00070
00072 extern const byte _slope_to_sprite_offset[32] = {
00073 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
00074 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 17, 0, 15, 18, 0,
00075 };
00076
00085 static SnowLine *_snow_line = NULL;
00086
00095 uint ApplyFoundationToSlope(Foundation f, Slope *s)
00096 {
00097 if (!IsFoundation(f)) return 0;
00098
00099 if (IsLeveledFoundation(f)) {
00100 uint dz = 1 + (IsSteepSlope(*s) ? 1 : 0);
00101 *s = SLOPE_FLAT;
00102 return dz;
00103 }
00104
00105 if (f != FOUNDATION_STEEP_BOTH && IsNonContinuousFoundation(f)) {
00106 *s = HalftileSlope(*s, GetHalftileFoundationCorner(f));
00107 return 0;
00108 }
00109
00110 if (IsSpecialRailFoundation(f)) {
00111 *s = SlopeWithThreeCornersRaised(OppositeCorner(GetRailFoundationCorner(f)));
00112 return 0;
00113 }
00114
00115 uint dz = IsSteepSlope(*s) ? 1 : 0;
00116 Corner highest_corner = GetHighestSlopeCorner(*s);
00117
00118 switch (f) {
00119 case FOUNDATION_INCLINED_X:
00120 *s = (((highest_corner == CORNER_W) || (highest_corner == CORNER_S)) ? SLOPE_SW : SLOPE_NE);
00121 break;
00122
00123 case FOUNDATION_INCLINED_Y:
00124 *s = (((highest_corner == CORNER_S) || (highest_corner == CORNER_E)) ? SLOPE_SE : SLOPE_NW);
00125 break;
00126
00127 case FOUNDATION_STEEP_LOWER:
00128 *s = SlopeWithOneCornerRaised(highest_corner);
00129 break;
00130
00131 case FOUNDATION_STEEP_BOTH:
00132 *s = HalftileSlope(SlopeWithOneCornerRaised(highest_corner), highest_corner);
00133 break;
00134
00135 default: NOT_REACHED();
00136 }
00137 return dz;
00138 }
00139
00140
00148 uint GetPartialPixelZ(int x, int y, Slope corners)
00149 {
00150 if (IsHalftileSlope(corners)) {
00151 switch (GetHalftileSlopeCorner(corners)) {
00152 case CORNER_W:
00153 if (x - y >= 0) return GetSlopeMaxPixelZ(corners);
00154 break;
00155
00156 case CORNER_S:
00157 if (x - (y ^ 0xF) >= 0) return GetSlopeMaxPixelZ(corners);
00158 break;
00159
00160 case CORNER_E:
00161 if (y - x >= 0) return GetSlopeMaxPixelZ(corners);
00162 break;
00163
00164 case CORNER_N:
00165 if ((y ^ 0xF) - x >= 0) return GetSlopeMaxPixelZ(corners);
00166 break;
00167
00168 default: NOT_REACHED();
00169 }
00170 }
00171
00172 int z = 0;
00173
00174 switch (RemoveHalftileSlope(corners)) {
00175 case SLOPE_W:
00176 if (x - y >= 0) {
00177 z = (x - y) >> 1;
00178 }
00179 break;
00180
00181 case SLOPE_S:
00182 y ^= 0xF;
00183 if ((x - y) >= 0) {
00184 z = (x - y) >> 1;
00185 }
00186 break;
00187
00188 case SLOPE_SW:
00189 z = (x >> 1) + 1;
00190 break;
00191
00192 case SLOPE_E:
00193 if (y - x >= 0) {
00194 z = (y - x) >> 1;
00195 }
00196 break;
00197
00198 case SLOPE_EW:
00199 case SLOPE_NS:
00200 case SLOPE_ELEVATED:
00201 z = 4;
00202 break;
00203
00204 case SLOPE_SE:
00205 z = (y >> 1) + 1;
00206 break;
00207
00208 case SLOPE_WSE:
00209 z = 8;
00210 y ^= 0xF;
00211 if (x - y < 0) {
00212 z += (x - y) >> 1;
00213 }
00214 break;
00215
00216 case SLOPE_N:
00217 y ^= 0xF;
00218 if (y - x >= 0) {
00219 z = (y - x) >> 1;
00220 }
00221 break;
00222
00223 case SLOPE_NW:
00224 z = (y ^ 0xF) >> 1;
00225 break;
00226
00227 case SLOPE_NWS:
00228 z = 8;
00229 if (x - y < 0) {
00230 z += (x - y) >> 1;
00231 }
00232 break;
00233
00234 case SLOPE_NE:
00235 z = (x ^ 0xF) >> 1;
00236 break;
00237
00238 case SLOPE_ENW:
00239 z = 8;
00240 y ^= 0xF;
00241 if (y - x < 0) {
00242 z += (y - x) >> 1;
00243 }
00244 break;
00245
00246 case SLOPE_SEN:
00247 z = 8;
00248 if (y - x < 0) {
00249 z += (y - x) >> 1;
00250 }
00251 break;
00252
00253 case SLOPE_STEEP_S:
00254 z = 1 + ((x + y) >> 1);
00255 break;
00256
00257 case SLOPE_STEEP_W:
00258 z = 1 + ((x + (y ^ 0xF)) >> 1);
00259 break;
00260
00261 case SLOPE_STEEP_N:
00262 z = 1 + (((x ^ 0xF) + (y ^ 0xF)) >> 1);
00263 break;
00264
00265 case SLOPE_STEEP_E:
00266 z = 1 + (((x ^ 0xF) + y) >> 1);
00267 break;
00268
00269 default: break;
00270 }
00271
00272 return z;
00273 }
00274
00275 int GetSlopePixelZ(int x, int y)
00276 {
00277 TileIndex tile = TileVirtXY(x, y);
00278
00279 return _tile_type_procs[GetTileType(tile)]->get_slope_z_proc(tile, x, y);
00280 }
00281
00291 int GetSlopeZInCorner(Slope tileh, Corner corner)
00292 {
00293 assert(!IsHalftileSlope(tileh));
00294 return ((tileh & SlopeWithOneCornerRaised(corner)) != 0 ? 1 : 0) + (tileh == SteepSlope(corner) ? 1 : 0);
00295 }
00296
00309 void GetSlopePixelZOnEdge(Slope tileh, DiagDirection edge, int *z1, int *z2)
00310 {
00311 static const Slope corners[4][4] = {
00312
00313
00314 {SLOPE_E, SLOPE_N, SLOPE_STEEP_E, SLOPE_STEEP_N},
00315 {SLOPE_S, SLOPE_E, SLOPE_STEEP_S, SLOPE_STEEP_E},
00316 {SLOPE_S, SLOPE_W, SLOPE_STEEP_S, SLOPE_STEEP_W},
00317 {SLOPE_W, SLOPE_N, SLOPE_STEEP_W, SLOPE_STEEP_N},
00318 };
00319
00320 int halftile_test = (IsHalftileSlope(tileh) ? SlopeWithOneCornerRaised(GetHalftileSlopeCorner(tileh)) : 0);
00321 if (halftile_test == corners[edge][0]) *z2 += TILE_HEIGHT;
00322 if (halftile_test == corners[edge][1]) *z1 += TILE_HEIGHT;
00323
00324 if ((tileh & corners[edge][0]) != 0) *z1 += TILE_HEIGHT;
00325 if ((tileh & corners[edge][1]) != 0) *z2 += TILE_HEIGHT;
00326 if (RemoveHalftileSlope(tileh) == corners[edge][2]) *z1 += TILE_HEIGHT;
00327 if (RemoveHalftileSlope(tileh) == corners[edge][3]) *z2 += TILE_HEIGHT;
00328 }
00329
00338 Slope GetFoundationSlope(TileIndex tile, int *z)
00339 {
00340 Slope tileh = GetTileSlope(tile, z);
00341 Foundation f = _tile_type_procs[GetTileType(tile)]->get_foundation_proc(tile, tileh);
00342 uint z_inc = ApplyFoundationToSlope(f, &tileh);
00343 if (z != NULL) *z += z_inc;
00344 return tileh;
00345 }
00346
00347
00348 bool HasFoundationNW(TileIndex tile, Slope slope_here, uint z_here)
00349 {
00350 int z;
00351
00352 int z_W_here = z_here;
00353 int z_N_here = z_here;
00354 GetSlopePixelZOnEdge(slope_here, DIAGDIR_NW, &z_W_here, &z_N_here);
00355
00356 Slope slope = GetFoundationPixelSlope(TILE_ADDXY(tile, 0, -1), &z);
00357 int z_W = z;
00358 int z_N = z;
00359 GetSlopePixelZOnEdge(slope, DIAGDIR_SE, &z_W, &z_N);
00360
00361 return (z_N_here > z_N) || (z_W_here > z_W);
00362 }
00363
00364
00365 bool HasFoundationNE(TileIndex tile, Slope slope_here, uint z_here)
00366 {
00367 int z;
00368
00369 int z_E_here = z_here;
00370 int z_N_here = z_here;
00371 GetSlopePixelZOnEdge(slope_here, DIAGDIR_NE, &z_E_here, &z_N_here);
00372
00373 Slope slope = GetFoundationPixelSlope(TILE_ADDXY(tile, -1, 0), &z);
00374 int z_E = z;
00375 int z_N = z;
00376 GetSlopePixelZOnEdge(slope, DIAGDIR_SW, &z_E, &z_N);
00377
00378 return (z_N_here > z_N) || (z_E_here > z_E);
00379 }
00380
00386 void DrawFoundation(TileInfo *ti, Foundation f)
00387 {
00388 if (!IsFoundation(f)) return;
00389
00390
00391 assert(f != FOUNDATION_STEEP_BOTH);
00392
00393 uint sprite_block = 0;
00394 int z;
00395 Slope slope = GetFoundationPixelSlope(ti->tile, &z);
00396
00397
00398
00399
00400
00401
00402
00403 if (!HasFoundationNW(ti->tile, slope, z)) sprite_block += 1;
00404 if (!HasFoundationNE(ti->tile, slope, z)) sprite_block += 2;
00405
00406
00407 SpriteID leveled_base = (sprite_block == 0 ? (int)SPR_FOUNDATION_BASE : (SPR_SLOPES_VIRTUAL_BASE + sprite_block * SPR_TRKFOUND_BLOCK_SIZE));
00408 SpriteID inclined_base = SPR_SLOPES_VIRTUAL_BASE + SPR_SLOPES_INCLINED_OFFSET + sprite_block * SPR_TRKFOUND_BLOCK_SIZE;
00409 SpriteID halftile_base = SPR_HALFTILE_FOUNDATION_BASE + sprite_block * SPR_HALFTILE_BLOCK_SIZE;
00410
00411 if (IsSteepSlope(ti->tileh)) {
00412 if (!IsNonContinuousFoundation(f)) {
00413
00414 AddSortableSpriteToDraw(
00415 leveled_base + (ti->tileh & ~SLOPE_STEEP), PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z
00416 );
00417 }
00418
00419 Corner highest_corner = GetHighestSlopeCorner(ti->tileh);
00420 ti->z += ApplyPixelFoundationToSlope(f, &ti->tileh);
00421
00422 if (IsInclinedFoundation(f)) {
00423
00424 byte inclined = highest_corner * 2 + (f == FOUNDATION_INCLINED_Y ? 1 : 0);
00425
00426 AddSortableSpriteToDraw(inclined_base + inclined, PAL_NONE, ti->x, ti->y,
00427 f == FOUNDATION_INCLINED_X ? 16 : 1,
00428 f == FOUNDATION_INCLINED_Y ? 16 : 1,
00429 TILE_HEIGHT, ti->z
00430 );
00431 OffsetGroundSprite(31, 9);
00432 } else if (IsLeveledFoundation(f)) {
00433 AddSortableSpriteToDraw(leveled_base + SlopeWithOneCornerRaised(highest_corner), PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z - TILE_HEIGHT);
00434 OffsetGroundSprite(31, 1);
00435 } else if (f == FOUNDATION_STEEP_LOWER) {
00436
00437 OffsetGroundSprite(31, 1);
00438 } else {
00439
00440 int x_bb = (((highest_corner == CORNER_W) || (highest_corner == CORNER_S)) ? 8 : 0);
00441 int y_bb = (((highest_corner == CORNER_S) || (highest_corner == CORNER_E)) ? 8 : 0);
00442
00443 AddSortableSpriteToDraw(halftile_base + highest_corner, PAL_NONE, ti->x + x_bb, ti->y + y_bb, 8, 8, 7, ti->z + TILE_HEIGHT);
00444 OffsetGroundSprite(31, 9);
00445 }
00446 } else {
00447 if (IsLeveledFoundation(f)) {
00448
00449 AddSortableSpriteToDraw(leveled_base + ti->tileh, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
00450 OffsetGroundSprite(31, 1);
00451 } else if (IsNonContinuousFoundation(f)) {
00452
00453 Corner halftile_corner = GetHalftileFoundationCorner(f);
00454 int x_bb = (((halftile_corner == CORNER_W) || (halftile_corner == CORNER_S)) ? 8 : 0);
00455 int y_bb = (((halftile_corner == CORNER_S) || (halftile_corner == CORNER_E)) ? 8 : 0);
00456
00457 AddSortableSpriteToDraw(halftile_base + halftile_corner, PAL_NONE, ti->x + x_bb, ti->y + y_bb, 8, 8, 7, ti->z);
00458 OffsetGroundSprite(31, 9);
00459 } else if (IsSpecialRailFoundation(f)) {
00460
00461 SpriteID spr;
00462 if (ti->tileh == SLOPE_NS || ti->tileh == SLOPE_EW) {
00463
00464 spr = leveled_base + SlopeWithThreeCornersRaised(GetRailFoundationCorner(f));
00465 } else {
00466
00467 spr = inclined_base + 2 * GetRailFoundationCorner(f) + ((ti->tileh == SLOPE_SW || ti->tileh == SLOPE_NE) ? 1 : 0);
00468 }
00469 AddSortableSpriteToDraw(spr, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
00470 OffsetGroundSprite(31, 9);
00471 } else {
00472
00473 byte inclined = GetHighestSlopeCorner(ti->tileh) * 2 + (f == FOUNDATION_INCLINED_Y ? 1 : 0);
00474
00475 AddSortableSpriteToDraw(inclined_base + inclined, PAL_NONE, ti->x, ti->y,
00476 f == FOUNDATION_INCLINED_X ? 16 : 1,
00477 f == FOUNDATION_INCLINED_Y ? 16 : 1,
00478 TILE_HEIGHT, ti->z
00479 );
00480 OffsetGroundSprite(31, 9);
00481 }
00482 ti->z += ApplyPixelFoundationToSlope(f, &ti->tileh);
00483 }
00484 }
00485
00486 void DoClearSquare(TileIndex tile)
00487 {
00488
00489 if (_tile_type_procs[GetTileType(tile)]->animate_tile_proc != NULL) DeleteAnimatedTile(tile);
00490
00491 MakeClear(tile, CLEAR_GRASS, _generating_world ? 3 : 0);
00492 MarkTileDirtyByTile(tile);
00493 }
00494
00505 TrackStatus GetTileTrackStatus(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
00506 {
00507 return _tile_type_procs[GetTileType(tile)]->get_tile_track_status_proc(tile, mode, sub_mode, side);
00508 }
00509
00516 void ChangeTileOwner(TileIndex tile, Owner old_owner, Owner new_owner)
00517 {
00518 _tile_type_procs[GetTileType(tile)]->change_tile_owner_proc(tile, old_owner, new_owner);
00519 }
00520
00521 void GetTileDesc(TileIndex tile, TileDesc *td)
00522 {
00523 _tile_type_procs[GetTileType(tile)]->get_tile_desc_proc(tile, td);
00524 }
00525
00531 bool IsSnowLineSet()
00532 {
00533 return _snow_line != NULL;
00534 }
00535
00541 void SetSnowLine(byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS])
00542 {
00543 _snow_line = CallocT<SnowLine>(1);
00544 _snow_line->lowest_value = 0xFF;
00545 memcpy(_snow_line->table, table, sizeof(_snow_line->table));
00546
00547 for (uint i = 0; i < SNOW_LINE_MONTHS; i++) {
00548 for (uint j = 0; j < SNOW_LINE_DAYS; j++) {
00549 _snow_line->highest_value = max(_snow_line->highest_value, table[i][j]);
00550 _snow_line->lowest_value = min(_snow_line->lowest_value, table[i][j]);
00551 }
00552 }
00553 }
00554
00560 byte GetSnowLine()
00561 {
00562 if (_snow_line == NULL) return _settings_game.game_creation.snow_line_height;
00563
00564 YearMonthDay ymd;
00565 ConvertDateToYMD(_date, &ymd);
00566 return _snow_line->table[ymd.month][ymd.day];
00567 }
00568
00574 byte HighestSnowLine()
00575 {
00576 return _snow_line == NULL ? _settings_game.game_creation.snow_line_height : _snow_line->highest_value;
00577 }
00578
00584 byte LowestSnowLine()
00585 {
00586 return _snow_line == NULL ? _settings_game.game_creation.snow_line_height : _snow_line->lowest_value;
00587 }
00588
00593 void ClearSnowLine()
00594 {
00595 free(_snow_line);
00596 _snow_line = NULL;
00597 }
00598
00608 CommandCost CmdLandscapeClear(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00609 {
00610 CommandCost cost(EXPENSES_CONSTRUCTION);
00611 bool do_clear = false;
00612
00613 if ((flags & DC_FORCE_CLEAR_TILE) && HasTileWaterClass(tile) && IsTileOnWater(tile) && !IsWaterTile(tile) && !IsCoastTile(tile)) {
00614 if ((flags & DC_AUTO) && GetWaterClass(tile) == WATER_CLASS_CANAL) return_cmd_error(STR_ERROR_MUST_DEMOLISH_CANAL_FIRST);
00615 do_clear = true;
00616 cost.AddCost(GetWaterClass(tile) == WATER_CLASS_CANAL ? _price[PR_CLEAR_CANAL] : _price[PR_CLEAR_WATER]);
00617 }
00618
00619 Company *c = (flags & (DC_AUTO | DC_BANKRUPT)) ? NULL : Company::GetIfValid(_current_company);
00620 if (c != NULL && (int)GB(c->clear_limit, 16, 16) < 1) {
00621 return_cmd_error(STR_ERROR_CLEARING_LIMIT_REACHED);
00622 }
00623
00624 const ClearedObjectArea *coa = FindClearedObject(tile);
00625
00626
00627
00628 if (coa != NULL && coa->first_tile != tile) {
00629
00630
00631
00632
00633
00634 if ((flags & DC_NO_WATER) && HasTileWaterClass(tile) && IsTileOnWater(tile)) {
00635 return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
00636 }
00637 } else {
00638 cost.AddCost(_tile_type_procs[GetTileType(tile)]->clear_tile_proc(tile, flags));
00639 }
00640
00641 if (flags & DC_EXEC) {
00642 if (c != NULL) c->clear_limit -= 1 << 16;
00643 if (do_clear) DoClearSquare(tile);
00644 }
00645 return cost;
00646 }
00647
00658 CommandCost CmdClearArea(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00659 {
00660 if (p1 >= MapSize()) return CMD_ERROR;
00661
00662 Money money = GetAvailableMoneyForCommand();
00663 CommandCost cost(EXPENSES_CONSTRUCTION);
00664 CommandCost last_error = CMD_ERROR;
00665 bool had_success = false;
00666
00667 const Company *c = (flags & (DC_AUTO | DC_BANKRUPT)) ? NULL : Company::GetIfValid(_current_company);
00668 int limit = (c == NULL ? INT32_MAX : GB(c->clear_limit, 16, 16));
00669
00670 TileArea ta(tile, p1);
00671 TileIterator *iter = HasBit(p2, 0) ? (TileIterator *)new DiagonalTileIterator(tile, p1) : new OrthogonalTileIterator(ta);
00672 for (; *iter != INVALID_TILE; ++(*iter)) {
00673 TileIndex t = *iter;
00674 CommandCost ret = DoCommand(t, 0, 0, flags & ~DC_EXEC, CMD_LANDSCAPE_CLEAR);
00675 if (ret.Failed()) {
00676 last_error = ret;
00677
00678
00679 if (c != NULL && GB(c->clear_limit, 16, 16) < 1) break;
00680 continue;
00681 }
00682
00683 had_success = true;
00684 if (flags & DC_EXEC) {
00685 money -= ret.GetCost();
00686 if (ret.GetCost() > 0 && money < 0) {
00687 _additional_cash_required = ret.GetCost();
00688 delete iter;
00689 return cost;
00690 }
00691 DoCommand(t, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00692
00693
00694
00695 TileIndex off = t - ta.tile;
00696 if ((TileX(off) == 0 || TileX(off) == ta.w - 1U) && (TileY(off) == 0 || TileY(off) == ta.h - 1U) && _pause_mode == PM_UNPAUSED) {
00697
00698 CreateEffectVehicleAbove(TileX(t) * TILE_SIZE + TILE_SIZE / 2, TileY(t) * TILE_SIZE + TILE_SIZE / 2, 2,
00699 ta.w == 1 && ta.h == 1 ? EV_EXPLOSION_SMALL : EV_EXPLOSION_LARGE
00700 );
00701 }
00702 } else {
00703
00704 if (ret.GetCost() != 0 && --limit <= 0) break;
00705 }
00706 cost.AddCost(ret);
00707 }
00708
00709 delete iter;
00710 return had_success ? cost : last_error;
00711 }
00712
00713
00714 TileIndex _cur_tileloop_tile;
00715
00719 void RunTileLoop()
00720 {
00721
00722
00723
00724
00725
00726
00727 static const uint32 feedbacks[] = {
00728 0xD8F, 0x1296, 0x2496, 0x4357, 0x8679, 0x1030E, 0x206CD, 0x403FE, 0x807B8, 0x1004B2, 0x2006A8
00729 };
00730 const uint32 feedback = feedbacks[MapLogX() + MapLogY() - 12];
00731
00732
00733 uint count = 1 << (MapLogX() + MapLogY() - 8);
00734
00735 TileIndex tile = _cur_tileloop_tile;
00736
00737 assert(tile != 0);
00738
00739
00740 if (_tick_counter % 256 == 0) {
00741 _tile_type_procs[GetTileType(0)]->tile_loop_proc(0);
00742 count--;
00743 }
00744
00745 while (count--) {
00746 _tile_type_procs[GetTileType(tile)]->tile_loop_proc(tile);
00747
00748
00749 tile = (tile >> 1) ^ (-(int32)(tile & 1) & feedback);
00750 }
00751
00752 _cur_tileloop_tile = tile;
00753 }
00754
00755 void InitializeLandscape()
00756 {
00757 uint maxx = MapMaxX();
00758 uint maxy = MapMaxY();
00759 uint sizex = MapSizeX();
00760
00761 uint y;
00762 for (y = _settings_game.construction.freeform_edges ? 1 : 0; y < maxy; y++) {
00763 uint x;
00764 for (x = _settings_game.construction.freeform_edges ? 1 : 0; x < maxx; x++) {
00765 MakeClear(sizex * y + x, CLEAR_GRASS, 3);
00766 SetTileHeight(sizex * y + x, 0);
00767 SetTropicZone(sizex * y + x, TROPICZONE_NORMAL);
00768 ClearBridgeMiddle(sizex * y + x);
00769 }
00770 MakeVoid(sizex * y + x);
00771 }
00772 for (uint x = 0; x < sizex; x++) MakeVoid(sizex * y + x);
00773 }
00774
00775 static const byte _genterrain_tbl_1[5] = { 10, 22, 33, 37, 4 };
00776 static const byte _genterrain_tbl_2[5] = { 0, 0, 0, 0, 33 };
00777
00778 static void GenerateTerrain(int type, uint flag)
00779 {
00780 uint32 r = Random();
00781
00782 const Sprite *templ = GetSprite((((r >> 24) * _genterrain_tbl_1[type]) >> 8) + _genterrain_tbl_2[type] + 4845, ST_MAPGEN);
00783 if (templ == NULL) usererror("Map generator sprites could not be loaded");
00784
00785 uint x = r & MapMaxX();
00786 uint y = (r >> MapLogX()) & MapMaxY();
00787
00788 if (x < 2 || y < 2) return;
00789
00790 DiagDirection direction = (DiagDirection)GB(r, 22, 2);
00791 uint w = templ->width;
00792 uint h = templ->height;
00793
00794 if (DiagDirToAxis(direction) == AXIS_Y) Swap(w, h);
00795
00796 const byte *p = templ->data;
00797
00798 if ((flag & 4) != 0) {
00799 uint xw = x * MapSizeY();
00800 uint yw = y * MapSizeX();
00801 uint bias = (MapSizeX() + MapSizeY()) * 16;
00802
00803 switch (flag & 3) {
00804 default: NOT_REACHED();
00805 case 0:
00806 if (xw + yw > MapSize() - bias) return;
00807 break;
00808
00809 case 1:
00810 if (yw < xw + bias) return;
00811 break;
00812
00813 case 2:
00814 if (xw + yw < MapSize() + bias) return;
00815 break;
00816
00817 case 3:
00818 if (xw < yw + bias) return;
00819 break;
00820 }
00821 }
00822
00823 if (x + w >= MapMaxX() - 1) return;
00824 if (y + h >= MapMaxY() - 1) return;
00825
00826 TileIndex tile = TileXY(x, y);
00827
00828 switch (direction) {
00829 default: NOT_REACHED();
00830 case DIAGDIR_NE:
00831 do {
00832 TileIndex tile_cur = tile;
00833
00834 for (uint w_cur = w; w_cur != 0; --w_cur) {
00835 if (GB(*p, 0, 4) >= TileHeight(tile_cur)) SetTileHeight(tile_cur, GB(*p, 0, 4));
00836 p++;
00837 tile_cur++;
00838 }
00839 tile += TileDiffXY(0, 1);
00840 } while (--h != 0);
00841 break;
00842
00843 case DIAGDIR_SE:
00844 do {
00845 TileIndex tile_cur = tile;
00846
00847 for (uint h_cur = h; h_cur != 0; --h_cur) {
00848 if (GB(*p, 0, 4) >= TileHeight(tile_cur)) SetTileHeight(tile_cur, GB(*p, 0, 4));
00849 p++;
00850 tile_cur += TileDiffXY(0, 1);
00851 }
00852 tile += TileDiffXY(1, 0);
00853 } while (--w != 0);
00854 break;
00855
00856 case DIAGDIR_SW:
00857 tile += TileDiffXY(w - 1, 0);
00858 do {
00859 TileIndex tile_cur = tile;
00860
00861 for (uint w_cur = w; w_cur != 0; --w_cur) {
00862 if (GB(*p, 0, 4) >= TileHeight(tile_cur)) SetTileHeight(tile_cur, GB(*p, 0, 4));
00863 p++;
00864 tile_cur--;
00865 }
00866 tile += TileDiffXY(0, 1);
00867 } while (--h != 0);
00868 break;
00869
00870 case DIAGDIR_NW:
00871 tile += TileDiffXY(0, h - 1);
00872 do {
00873 TileIndex tile_cur = tile;
00874
00875 for (uint h_cur = h; h_cur != 0; --h_cur) {
00876 if (GB(*p, 0, 4) >= TileHeight(tile_cur)) SetTileHeight(tile_cur, GB(*p, 0, 4));
00877 p++;
00878 tile_cur -= TileDiffXY(0, 1);
00879 }
00880 tile += TileDiffXY(1, 0);
00881 } while (--w != 0);
00882 break;
00883 }
00884 }
00885
00886
00887 #include "table/genland.h"
00888
00889 static void CreateDesertOrRainForest()
00890 {
00891 TileIndex update_freq = MapSize() / 4;
00892 const TileIndexDiffC *data;
00893
00894 for (TileIndex tile = 0; tile != MapSize(); ++tile) {
00895 if ((tile % update_freq) == 0) IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
00896
00897 if (!IsValidTile(tile)) continue;
00898
00899 for (data = _make_desert_or_rainforest_data;
00900 data != endof(_make_desert_or_rainforest_data); ++data) {
00901 TileIndex t = AddTileIndexDiffCWrap(tile, *data);
00902 if (t != INVALID_TILE && (TileHeight(t) >= 4 || IsTileType(t, MP_WATER))) break;
00903 }
00904 if (data == endof(_make_desert_or_rainforest_data)) {
00905 SetTropicZone(tile, TROPICZONE_DESERT);
00906 }
00907 }
00908
00909 for (uint i = 0; i != 256; i++) {
00910 if ((i % 64) == 0) IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
00911
00912 RunTileLoop();
00913 }
00914
00915 for (TileIndex tile = 0; tile != MapSize(); ++tile) {
00916 if ((tile % update_freq) == 0) IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
00917
00918 if (!IsValidTile(tile)) continue;
00919
00920 for (data = _make_desert_or_rainforest_data;
00921 data != endof(_make_desert_or_rainforest_data); ++data) {
00922 TileIndex t = AddTileIndexDiffCWrap(tile, *data);
00923 if (t != INVALID_TILE && IsTileType(t, MP_CLEAR) && IsClearGround(t, CLEAR_DESERT)) break;
00924 }
00925 if (data == endof(_make_desert_or_rainforest_data)) {
00926 SetTropicZone(tile, TROPICZONE_RAINFOREST);
00927 }
00928 }
00929 }
00930
00937 static bool FindSpring(TileIndex tile, void *user_data)
00938 {
00939 int referenceHeight;
00940 Slope s = GetTileSlope(tile, &referenceHeight);
00941 if (s != SLOPE_FLAT || IsWaterTile(tile)) return false;
00942
00943
00944 if (_settings_game.game_creation.landscape == LT_TROPIC && GetTropicZone(tile) != TROPICZONE_RAINFOREST) return false;
00945
00946
00947 uint num = 0;
00948 for (int dx = -1; dx <= 1; dx++) {
00949 for (int dy = -1; dy <= 1; dy++) {
00950 TileIndex t = TileAddWrap(tile, dx, dy);
00951 if (t != INVALID_TILE && GetTileMaxZ(t) > referenceHeight) num++;
00952 }
00953 }
00954
00955 if (num < 4) return false;
00956
00957
00958 for (int dx = -16; dx <= 16; dx++) {
00959 for (int dy = -16; dy <= 16; dy++) {
00960 TileIndex t = TileAddWrap(tile, dx, dy);
00961 if (t != INVALID_TILE && GetTileMaxZ(t) > referenceHeight + 2) return false;
00962 }
00963 }
00964
00965 return true;
00966 }
00967
00974 static bool MakeLake(TileIndex tile, void *user_data)
00975 {
00976 uint height = *(uint*)user_data;
00977 if (!IsValidTile(tile) || TileHeight(tile) != height || GetTileSlope(tile) != SLOPE_FLAT) return false;
00978 if (_settings_game.game_creation.landscape == LT_TROPIC && GetTropicZone(tile) == TROPICZONE_DESERT) return false;
00979
00980 for (DiagDirection d = DIAGDIR_BEGIN; d < DIAGDIR_END; d++) {
00981 TileIndex t2 = tile + TileOffsByDiagDir(d);
00982 if (IsWaterTile(t2)) {
00983 MakeRiver(tile, Random());
00984 return false;
00985 }
00986 }
00987
00988 return false;
00989 }
00990
00997 static bool FlowsDown(TileIndex begin, TileIndex end)
00998 {
00999 assert(DistanceManhattan(begin, end) == 1);
01000
01001 int heightBegin;
01002 int heightEnd;
01003 Slope slopeBegin = GetTileSlope(begin, &heightBegin);
01004 Slope slopeEnd = GetTileSlope(end, &heightEnd);
01005
01006 return heightEnd <= heightBegin &&
01007
01008 (slopeEnd == SLOPE_FLAT || IsInclinedSlope(slopeEnd)) &&
01009
01010 ((slopeEnd == slopeBegin && heightEnd < heightBegin) || slopeEnd == SLOPE_FLAT || slopeBegin == SLOPE_FLAT);
01011 }
01012
01013
01014 static int32 River_EndNodeCheck(AyStar *aystar, OpenListNode *current)
01015 {
01016 return current->path.node.tile == *(TileIndex*)aystar->user_target ? AYSTAR_FOUND_END_NODE : AYSTAR_DONE;
01017 }
01018
01019
01020 static int32 River_CalculateG(AyStar *aystar, AyStarNode *current, OpenListNode *parent)
01021 {
01022 return 1 + RandomRange(_settings_game.game_creation.river_route_random);
01023 }
01024
01025
01026 static int32 River_CalculateH(AyStar *aystar, AyStarNode *current, OpenListNode *parent)
01027 {
01028 return DistanceManhattan(*(TileIndex*)aystar->user_target, current->tile);
01029 }
01030
01031
01032 static void River_GetNeighbours(AyStar *aystar, OpenListNode *current)
01033 {
01034 TileIndex tile = current->path.node.tile;
01035
01036 aystar->num_neighbours = 0;
01037 for (DiagDirection d = DIAGDIR_BEGIN; d < DIAGDIR_END; d++) {
01038 TileIndex t2 = tile + TileOffsByDiagDir(d);
01039 if (IsValidTile(t2) && FlowsDown(tile, t2)) {
01040 aystar->neighbours[aystar->num_neighbours].tile = t2;
01041 aystar->neighbours[aystar->num_neighbours].direction = INVALID_TRACKDIR;
01042 aystar->num_neighbours++;
01043 }
01044 }
01045 }
01046
01047
01048 static void River_FoundEndNode(AyStar *aystar, OpenListNode *current)
01049 {
01050 for (PathNode *path = ¤t->path; path != NULL; path = path->parent) {
01051 TileIndex tile = path->node.tile;
01052 if (!IsWaterTile(tile)) {
01053 MakeRiver(tile, Random());
01054
01055 CircularTileSearch(&tile, 5, RiverModifyDesertZone, NULL);
01056 }
01057 }
01058 }
01059
01060 static const uint RIVER_HASH_SIZE = 8;
01061
01068 static uint River_Hash(uint tile, uint dir)
01069 {
01070 return GB(TileHash(TileX(tile), TileY(tile)), 0, RIVER_HASH_SIZE);
01071 }
01072
01078 static void BuildRiver(TileIndex begin, TileIndex end)
01079 {
01080 AyStar finder;
01081 MemSetT(&finder, 0);
01082 finder.CalculateG = River_CalculateG;
01083 finder.CalculateH = River_CalculateH;
01084 finder.GetNeighbours = River_GetNeighbours;
01085 finder.EndNodeCheck = River_EndNodeCheck;
01086 finder.FoundEndNode = River_FoundEndNode;
01087 finder.user_target = &end;
01088
01089 finder.Init(River_Hash, 1 << RIVER_HASH_SIZE);
01090
01091 AyStarNode start;
01092 start.tile = begin;
01093 start.direction = INVALID_TRACKDIR;
01094 finder.AddStartNode(&start, 0);
01095 finder.Main();
01096 finder.Free();
01097 }
01098
01106 static bool FlowRiver(bool *marks, TileIndex spring, TileIndex begin)
01107 {
01108 uint height = TileHeight(begin);
01109 if (IsWaterTile(begin)) return DistanceManhattan(spring, begin) > _settings_game.game_creation.min_river_length;
01110
01111 MemSetT(marks, 0, MapSize());
01112 marks[begin] = true;
01113
01114
01115 std::list<TileIndex> queue;
01116 queue.push_back(begin);
01117
01118 bool found = false;
01119 uint count = 0;
01120 TileIndex end;
01121 do {
01122 end = queue.front();
01123 queue.pop_front();
01124
01125 uint height2 = TileHeight(end);
01126 if (GetTileSlope(end) == SLOPE_FLAT && (height2 < height || (height2 == height && IsWaterTile(end)))) {
01127 found = true;
01128 break;
01129 }
01130
01131 for (DiagDirection d = DIAGDIR_BEGIN; d < DIAGDIR_END; d++) {
01132 TileIndex t2 = end + TileOffsByDiagDir(d);
01133 if (IsValidTile(t2) && !marks[t2] && FlowsDown(end, t2)) {
01134 marks[t2] = true;
01135 count++;
01136 queue.push_back(t2);
01137 }
01138 }
01139 } while (!queue.empty());
01140
01141 if (found) {
01142
01143 found = FlowRiver(marks, spring, end);
01144 } else if (count > 32) {
01145
01146 TileIndex lakeCenter = 0;
01147 for (int i = RandomRange(count - 1); i != 0; lakeCenter++) {
01148 if (marks[lakeCenter]) i--;
01149 }
01150
01151 if (IsValidTile(lakeCenter) &&
01152
01153 GetTileSlope(lakeCenter) == SLOPE_FLAT &&
01154
01155 TileHeight(begin) == TileHeight(lakeCenter) &&
01156
01157 lakeCenter != begin &&
01158
01159 (_settings_game.game_creation.landscape != LT_TROPIC || GetTropicZone(lakeCenter) != TROPICZONE_DESERT) &&
01160
01161 DistanceManhattan(spring, lakeCenter) > _settings_game.game_creation.min_river_length) {
01162 end = lakeCenter;
01163 MakeRiver(lakeCenter, Random());
01164 uint range = RandomRange(8) + 3;
01165 CircularTileSearch(&lakeCenter, range, MakeLake, &height);
01166
01167 lakeCenter = end;
01168 CircularTileSearch(&lakeCenter, range, MakeLake, &height);
01169 found = true;
01170 }
01171 }
01172
01173 if (found) BuildRiver(begin, end);
01174 return found;
01175 }
01176
01180 static void CreateRivers()
01181 {
01182 int amount = _settings_game.game_creation.amount_of_rivers;
01183 if (amount == 0) return;
01184
01185 uint wells = ScaleByMapSize(4 << _settings_game.game_creation.amount_of_rivers);
01186 SetGeneratingWorldProgress(GWP_RIVER, wells + 256 / 64);
01187 bool *marks = CallocT<bool>(MapSize());
01188
01189 for (; wells != 0; wells--) {
01190 IncreaseGeneratingWorldProgress(GWP_RIVER);
01191 for (int tries = 0; tries < 128; tries++) {
01192 TileIndex t = RandomTile();
01193 if (!CircularTileSearch(&t, 8, FindSpring, NULL)) continue;
01194 if (FlowRiver(marks, t, t)) break;
01195 }
01196 }
01197
01198 free(marks);
01199
01200
01201 for (uint i = 0; i != 256; i++) {
01202 if (i % 64 == 0) IncreaseGeneratingWorldProgress(GWP_RIVER);
01203 RunTileLoop();
01204 }
01205 }
01206
01207 void GenerateLandscape(byte mode)
01208 {
01210 enum GenLandscapeSteps {
01211 GLS_HEIGHTMAP = 3,
01212 GLS_TERRAGENESIS = 5,
01213 GLS_ORIGINAL = 2,
01214 GLS_TROPIC = 12,
01215 GLS_OTHER = 0,
01216 };
01217 uint steps = (_settings_game.game_creation.landscape == LT_TROPIC) ? GLS_TROPIC : GLS_OTHER;
01218
01219 if (mode == GWM_HEIGHTMAP) {
01220 SetGeneratingWorldProgress(GWP_LANDSCAPE, steps + GLS_HEIGHTMAP);
01221 LoadHeightmap(_file_to_saveload.name);
01222 IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
01223 } else if (_settings_game.game_creation.land_generator == LG_TERRAGENESIS) {
01224 SetGeneratingWorldProgress(GWP_LANDSCAPE, steps + GLS_TERRAGENESIS);
01225 GenerateTerrainPerlin();
01226 } else {
01227 SetGeneratingWorldProgress(GWP_LANDSCAPE, steps + GLS_ORIGINAL);
01228 if (_settings_game.construction.freeform_edges) {
01229 for (uint x = 0; x < MapSizeX(); x++) MakeVoid(TileXY(x, 0));
01230 for (uint y = 0; y < MapSizeY(); y++) MakeVoid(TileXY(0, y));
01231 }
01232 switch (_settings_game.game_creation.landscape) {
01233 case LT_ARCTIC: {
01234 uint32 r = Random();
01235
01236 for (uint i = ScaleByMapSize(GB(r, 0, 7) + 950); i != 0; --i) {
01237 GenerateTerrain(2, 0);
01238 }
01239
01240 uint flag = GB(r, 7, 2) | 4;
01241 for (uint i = ScaleByMapSize(GB(r, 9, 7) + 450); i != 0; --i) {
01242 GenerateTerrain(4, flag);
01243 }
01244 break;
01245 }
01246
01247 case LT_TROPIC: {
01248 uint32 r = Random();
01249
01250 for (uint i = ScaleByMapSize(GB(r, 0, 7) + 170); i != 0; --i) {
01251 GenerateTerrain(0, 0);
01252 }
01253
01254 uint flag = GB(r, 7, 2) | 4;
01255 for (uint i = ScaleByMapSize(GB(r, 9, 8) + 1700); i != 0; --i) {
01256 GenerateTerrain(0, flag);
01257 }
01258
01259 flag ^= 2;
01260
01261 for (uint i = ScaleByMapSize(GB(r, 17, 7) + 410); i != 0; --i) {
01262 GenerateTerrain(3, flag);
01263 }
01264 break;
01265 }
01266
01267 default: {
01268 uint32 r = Random();
01269
01270 assert(_settings_game.difficulty.quantity_sea_lakes != CUSTOM_SEA_LEVEL_NUMBER_DIFFICULTY);
01271 uint i = ScaleByMapSize(GB(r, 0, 7) + (3 - _settings_game.difficulty.quantity_sea_lakes) * 256 + 100);
01272 for (; i != 0; --i) {
01273 GenerateTerrain(_settings_game.difficulty.terrain_type, 0);
01274 }
01275 break;
01276 }
01277 }
01278 }
01279
01280
01281
01282 FixSlopes();
01283 IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
01284 ConvertGroundTilesIntoWaterTiles();
01285 IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
01286
01287 if (_settings_game.game_creation.landscape == LT_TROPIC) CreateDesertOrRainForest();
01288
01289 CreateRivers();
01290 }
01291
01292 void OnTick_Town();
01293 void OnTick_Trees();
01294 void OnTick_Station();
01295 void OnTick_Industry();
01296
01297 void OnTick_Companies();
01298
01299 void CallLandscapeTick()
01300 {
01301 OnTick_Town();
01302 OnTick_Trees();
01303 OnTick_Station();
01304 OnTick_Industry();
01305
01306 OnTick_Companies();
01307 }