00001
00002
00005 #include "stdafx.h"
00006 #include "openttd.h"
00007 #include "clear_map.h"
00008 #include "landscape.h"
00009 #include "tree_map.h"
00010 #include "viewport_func.h"
00011 #include "command_func.h"
00012 #include "economy_func.h"
00013 #include "town.h"
00014 #include "variables.h"
00015 #include "genworld.h"
00016 #include "transparency.h"
00017 #include "functions.h"
00018 #include "company_func.h"
00019 #include "sound_func.h"
00020 #include "water_map.h"
00021 #include "water.h"
00022 #include "landscape_type.h"
00023 #include "company_base.h"
00024
00025 #include "table/strings.h"
00026 #include "table/sprites.h"
00027 #include "table/tree_land.h"
00028
00034 enum TreePlacer {
00035 TP_NONE,
00036 TP_ORIGINAL,
00037 TP_IMPROVED,
00038 };
00039
00048 static bool CanPlantTreesOnTile(TileIndex tile, bool allow_desert)
00049 {
00050 switch (GetTileType(tile)) {
00051 case MP_WATER:
00052 return !IsBridgeAbove(tile) && IsCoast(tile) && !IsSlopeWithOneCornerRaised(GetTileSlope(tile, NULL));
00053
00054 case MP_CLEAR:
00055 return !IsBridgeAbove(tile) && !IsClearGround(tile, CLEAR_FIELDS) && !IsClearGround(tile, CLEAR_ROCKS) &&
00056 (allow_desert || !IsClearGround(tile, CLEAR_DESERT));
00057
00058 default: return false;
00059 }
00060 }
00061
00073 static void PlantTreesOnTile(TileIndex tile, TreeType treetype, uint count, uint growth)
00074 {
00075 assert(treetype != TREE_INVALID);
00076 assert(CanPlantTreesOnTile(tile, true));
00077
00078 TreeGround ground;
00079 uint density = 3;
00080
00081 switch (GetTileType(tile)) {
00082 case MP_WATER:
00083 ground = TREE_GROUND_SHORE;
00084 break;
00085
00086 case MP_CLEAR:
00087 switch (GetClearGround(tile)) {
00088 case CLEAR_GRASS: ground = TREE_GROUND_GRASS; density = GetClearDensity(tile); break;
00089 case CLEAR_ROUGH: ground = TREE_GROUND_ROUGH; break;
00090 default: ground = TREE_GROUND_SNOW_DESERT; density = GetClearDensity(tile); break;
00091 }
00092 break;
00093
00094 default: NOT_REACHED();
00095 }
00096
00097 MakeTree(tile, treetype, count, growth, ground, density);
00098 }
00099
00111 static TreeType GetRandomTreeType(TileIndex tile, uint seed)
00112 {
00113 switch (_settings_game.game_creation.landscape) {
00114 case LT_TEMPERATE:
00115 return (TreeType)(seed * TREE_COUNT_TEMPERATE / 256 + TREE_TEMPERATE);
00116
00117 case LT_ARCTIC:
00118 return (TreeType)(seed * TREE_COUNT_SUB_ARCTIC / 256 + TREE_SUB_ARCTIC);
00119
00120 case LT_TROPIC:
00121 switch (GetTropicZone(tile)) {
00122 case TROPICZONE_NORMAL: return (TreeType)(seed * TREE_COUNT_SUB_TROPICAL / 256 + TREE_SUB_TROPICAL);
00123 case TROPICZONE_DESERT: return (TreeType)((seed > 12) ? TREE_INVALID : TREE_CACTUS);
00124 default: return (TreeType)(seed * TREE_COUNT_RAINFOREST / 256 + TREE_RAINFOREST);
00125 }
00126
00127 default:
00128 return (TreeType)(seed * TREE_COUNT_TOYLAND / 256 + TREE_TOYLAND);
00129 }
00130 }
00131
00141 static void PlaceTree(TileIndex tile, uint32 r)
00142 {
00143 TreeType tree = GetRandomTreeType(tile, GB(r, 24, 8));
00144
00145 if (tree != TREE_INVALID) {
00146 PlantTreesOnTile(tile, tree, GB(r, 22, 2), min(GB(r, 16, 3), 6));
00147
00148
00149 TreeGround ground = GetTreeGround(tile);
00150 if (ground != TREE_GROUND_SNOW_DESERT && ground != TREE_GROUND_SHORE) {
00151 SetTreeGroundDensity(tile, (TreeGround)GB(r, 28, 1), 3);
00152 }
00153
00154
00155 SetTreeCounter(tile, (TreeGround)GB(r, 24, 4));
00156 }
00157 }
00158
00168 static void DoPlaceMoreTrees(TileIndex tile)
00169 {
00170 uint i;
00171
00172 for (i = 0; i < 1000; i++) {
00173 uint32 r = Random();
00174 int x = GB(r, 0, 5) - 16;
00175 int y = GB(r, 8, 5) - 16;
00176 uint dist = abs(x) + abs(y);
00177 TileIndex cur_tile = TileAddWrap(tile, x, y);
00178
00179 if (cur_tile != INVALID_TILE && dist <= 13 && CanPlantTreesOnTile(cur_tile, true)) {
00180 PlaceTree(cur_tile, r);
00181 }
00182 }
00183 }
00184
00190 static void PlaceMoreTrees()
00191 {
00192 uint i = ScaleByMapSize(GB(Random(), 0, 5) + 25);
00193 do {
00194 DoPlaceMoreTrees(RandomTile());
00195 } while (--i);
00196 }
00197
00207 static void PlaceTreeAtSameHeight(TileIndex tile, uint height)
00208 {
00209 uint i;
00210
00211 for (i = 0; i < 1000; i++) {
00212 uint32 r = Random();
00213 int x = GB(r, 0, 5) - 16;
00214 int y = GB(r, 8, 5) - 16;
00215 TileIndex cur_tile = TileAddWrap(tile, x, y);
00216 if (cur_tile == INVALID_TILE) continue;
00217
00218
00219 if (abs(x) + abs(y) > 16) continue;
00220
00221
00222 if (!CanPlantTreesOnTile(cur_tile, true)) continue;
00223
00224
00225 if (Delta(GetTileZ(cur_tile), height) > 2) continue;
00226
00227
00228 PlaceTree(cur_tile, r);
00229 break;
00230 }
00231 }
00232
00238 void PlaceTreesRandomly()
00239 {
00240 uint i, j, ht;
00241
00242 i = ScaleByMapSize(1000);
00243 do {
00244 uint32 r = Random();
00245 TileIndex tile = RandomTileSeed(r);
00246
00247 IncreaseGeneratingWorldProgress(GWP_TREE);
00248
00249 if (CanPlantTreesOnTile(tile, true)) {
00250 PlaceTree(tile, r);
00251 if (_settings_game.game_creation.tree_placer != TP_IMPROVED) continue;
00252
00253
00254
00255
00256 ht = GetTileZ(tile);
00257
00258 j = GetTileZ(tile) / TILE_HEIGHT * 2;
00259 while (j--) {
00260
00261 if (_settings_game.game_creation.landscape == LT_ARCTIC && ht > GetSnowLine()) {
00262 PlaceTreeAtSameHeight(tile, ht);
00263 PlaceTreeAtSameHeight(tile, ht);
00264 };
00265
00266 PlaceTreeAtSameHeight(tile, ht);
00267 }
00268 }
00269 } while (--i);
00270
00271
00272 if (_settings_game.game_creation.landscape == LT_TROPIC) {
00273 i = ScaleByMapSize(15000);
00274
00275 do {
00276 uint32 r = Random();
00277 TileIndex tile = RandomTileSeed(r);
00278
00279 IncreaseGeneratingWorldProgress(GWP_TREE);
00280
00281 if (GetTropicZone(tile) == TROPICZONE_RAINFOREST && CanPlantTreesOnTile(tile, false)) {
00282 PlaceTree(tile, r);
00283 }
00284 } while (--i);
00285 }
00286 }
00287
00294 void GenerateTrees()
00295 {
00296 uint i, total;
00297
00298 if (_settings_game.game_creation.tree_placer == TP_NONE) return;
00299
00300 if (_settings_game.game_creation.landscape != LT_TOYLAND) PlaceMoreTrees();
00301
00302 switch (_settings_game.game_creation.tree_placer) {
00303 case TP_ORIGINAL: i = _settings_game.game_creation.landscape == LT_ARCTIC ? 15 : 6; break;
00304 case TP_IMPROVED: i = _settings_game.game_creation.landscape == LT_ARCTIC ? 4 : 2; break;
00305 default: NOT_REACHED(); return;
00306 }
00307
00308 total = ScaleByMapSize(1000);
00309 if (_settings_game.game_creation.landscape == LT_TROPIC) total += ScaleByMapSize(15000);
00310 total *= i;
00311 SetGeneratingWorldProgress(GWP_TREE, total);
00312
00313 for (; i != 0; i--) {
00314 PlaceTreesRandomly();
00315 }
00316 }
00317
00324 CommandCost CmdPlantTree(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00325 {
00326 StringID msg = INVALID_STRING_ID;
00327 CommandCost cost(EXPENSES_OTHER);
00328 int ex;
00329 int ey;
00330 int sx, sy, x, y;
00331
00332 if (p2 >= MapSize()) return CMD_ERROR;
00333
00334 if (p1 != UINT_MAX && p1 - _tree_base_by_landscape[_settings_game.game_creation.landscape] >= _tree_count_by_landscape[_settings_game.game_creation.landscape]) return CMD_ERROR;
00335
00336
00337 ex = TileX(tile);
00338 ey = TileY(tile);
00339 sx = TileX(p2);
00340 sy = TileY(p2);
00341 if (ex < sx) Swap(ex, sx);
00342 if (ey < sy) Swap(ey, sy);
00343
00344 for (x = sx; x <= ex; x++) {
00345 for (y = sy; y <= ey; y++) {
00346 TileIndex tile = TileXY(x, y);
00347
00348 switch (GetTileType(tile)) {
00349 case MP_TREES:
00350
00351 if (_game_mode != GM_EDITOR && GetTreeCount(tile) == 4) {
00352 msg = STR_2803_TREE_ALREADY_HERE;
00353 continue;
00354 }
00355
00356 if (flags & DC_EXEC) {
00357 AddTreeCount(tile, 1);
00358 MarkTileDirtyByTile(tile);
00359 }
00360
00361 cost.AddCost(_price.build_trees * 2);
00362 break;
00363
00364 case MP_WATER:
00365 if (!IsCoast(tile) || IsSlopeWithOneCornerRaised(GetTileSlope(tile, NULL))) {
00366 msg = STR_3807_CAN_T_BUILD_ON_WATER;
00367 continue;
00368 }
00369
00370 case MP_CLEAR:
00371 if (IsBridgeAbove(tile)) {
00372 msg = STR_2804_SITE_UNSUITABLE;
00373 continue;
00374 }
00375
00376 if (IsTileType(tile, MP_CLEAR)) {
00377
00378 switch (GetClearGround(tile)) {
00379 case CLEAR_FIELDS:
00380 case CLEAR_ROCKS: {
00381 CommandCost ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00382 if (CmdFailed(ret)) return ret;
00383 cost.AddCost(ret);
00384 break;
00385 }
00386
00387 default: break;
00388 }
00389 }
00390
00391 if (_game_mode != GM_EDITOR && IsValidCompanyID(_current_company)) {
00392 Town *t = ClosestTownFromTile(tile, _settings_game.economy.dist_local_authority);
00393 if (t != NULL) ChangeTownRating(t, RATING_TREE_UP_STEP, RATING_TREE_MAXIMUM, flags);
00394 }
00395
00396 if (flags & DC_EXEC) {
00397 TreeType treetype;
00398
00399 treetype = (TreeType)p1;
00400 if (treetype == TREE_INVALID) {
00401 treetype = GetRandomTreeType(tile, GB(Random(), 24, 8));
00402 if (treetype == TREE_INVALID) treetype = TREE_CACTUS;
00403 }
00404
00405
00406 PlantTreesOnTile(tile, treetype, 0, _game_mode == GM_EDITOR ? 3 : 0);
00407 MarkTileDirtyByTile(tile);
00408
00409
00410 if (_game_mode == GM_EDITOR && IsInsideMM(treetype, TREE_RAINFOREST, TREE_CACTUS))
00411 SetTropicZone(tile, TROPICZONE_RAINFOREST);
00412 }
00413 cost.AddCost(_price.build_trees);
00414 break;
00415
00416 default:
00417 msg = STR_2804_SITE_UNSUITABLE;
00418 break;
00419 }
00420 }
00421 }
00422
00423 if (cost.GetCost() == 0) {
00424 return_cmd_error(msg);
00425 } else {
00426 return cost;
00427 }
00428 }
00429
00430 struct TreeListEnt {
00431 SpriteID image;
00432 SpriteID pal;
00433 byte x, y;
00434 };
00435
00436 static void DrawTile_Trees(TileInfo *ti)
00437 {
00438 switch (GetTreeGround(ti->tile)) {
00439 case TREE_GROUND_SHORE: DrawShoreTile(ti->tileh); break;
00440 case TREE_GROUND_GRASS: DrawClearLandTile(ti, GetTreeDensity(ti->tile)); break;
00441 case TREE_GROUND_ROUGH: DrawHillyLandTile(ti); break;
00442 default: DrawGroundSprite(_tree_sprites_1[GetTreeDensity(ti->tile)] + _tileh_to_sprite[ti->tileh], PAL_NONE); break;
00443 }
00444
00445 DrawClearLandFence(ti);
00446
00447
00448 if (IsInvisibilitySet(TO_TREES)) return;
00449
00450 uint16 tmp = ti->x;
00451
00452 tmp = ROR(tmp, 2);
00453 tmp -= ti->y;
00454 tmp = ROR(tmp, 3);
00455 tmp -= ti->x;
00456 tmp = ROR(tmp, 1);
00457 tmp += ti->y;
00458
00459 uint index = GB(tmp, 6, 2) + (GetTreeType(ti->tile) << 2);
00460
00461
00462 if (GetTreeGround(ti->tile) == TREE_GROUND_SNOW_DESERT &&
00463 GetTreeDensity(ti->tile) >= 2 &&
00464 IsInsideMM(index, TREE_SUB_ARCTIC << 2, TREE_RAINFOREST << 2)) {
00465 index += 164 - (TREE_SUB_ARCTIC << 2);
00466 }
00467
00468 assert(index < lengthof(_tree_layout_sprite));
00469
00470 const PalSpriteID *s = _tree_layout_sprite[index];
00471 const TreePos *d = _tree_layout_xy[GB(tmp, 4, 2)];
00472
00473
00474 StartSpriteCombine();
00475
00476 TreeListEnt te[4];
00477
00478
00479 uint trees = GetTreeCount(ti->tile);
00480
00481 for (uint i = 0; i < trees; i++) {
00482 SpriteID image = s[0].sprite + (i == trees - 1 ? GetTreeGrowth(ti->tile) : 3);
00483 SpriteID pal = s[0].pal;
00484
00485 te[i].image = image;
00486 te[i].pal = pal;
00487 te[i].x = d->x;
00488 te[i].y = d->y;
00489 s++;
00490 d++;
00491 }
00492
00493
00494 byte z = ti->z + GetSlopeMaxZ(ti->tileh) / 2;
00495
00496 for (; trees > 0; trees--) {
00497 uint min = te[0].x + te[0].y;
00498 uint mi = 0;
00499
00500 for (uint i = 1; i < trees; i++) {
00501 if ((uint)(te[i].x + te[i].y) < min) {
00502 min = te[i].x + te[i].y;
00503 mi = i;
00504 }
00505 }
00506
00507 AddSortableSpriteToDraw(te[mi].image, te[mi].pal, ti->x + te[mi].x, ti->y + te[mi].y, 16 - te[mi].x, 16 - te[mi].y, 0x30, z, IsTransparencySet(TO_TREES), -te[mi].x, -te[mi].y);
00508
00509
00510 te[mi] = te[trees - 1];
00511 }
00512
00513 EndSpriteCombine();
00514 }
00515
00516
00517 static uint GetSlopeZ_Trees(TileIndex tile, uint x, uint y)
00518 {
00519 uint z;
00520 Slope tileh = GetTileSlope(tile, &z);
00521
00522 return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
00523 }
00524
00525 static Foundation GetFoundation_Trees(TileIndex tile, Slope tileh)
00526 {
00527 return FOUNDATION_NONE;
00528 }
00529
00530 static CommandCost ClearTile_Trees(TileIndex tile, DoCommandFlag flags)
00531 {
00532 uint num;
00533
00534 if (IsValidCompanyID(_current_company)) {
00535 Town *t = ClosestTownFromTile(tile, _settings_game.economy.dist_local_authority);
00536 if (t != NULL) ChangeTownRating(t, RATING_TREE_DOWN_STEP, RATING_TREE_MINIMUM, flags);
00537 }
00538
00539 num = GetTreeCount(tile);
00540 if (IsInsideMM(GetTreeType(tile), TREE_RAINFOREST, TREE_CACTUS)) num *= 4;
00541
00542 if (flags & DC_EXEC) DoClearSquare(tile);
00543
00544 return CommandCost(EXPENSES_CONSTRUCTION, num * _price.remove_trees);
00545 }
00546
00547 static void GetAcceptedCargo_Trees(TileIndex tile, AcceptedCargo ac)
00548 {
00549
00550 }
00551
00552 static void GetTileDesc_Trees(TileIndex tile, TileDesc *td)
00553 {
00554 TreeType tt = GetTreeType(tile);
00555
00556 if (IsInsideMM(tt, TREE_RAINFOREST, TREE_CACTUS)) {
00557 td->str = STR_280F_RAINFOREST;
00558 } else {
00559 td->str = tt == TREE_CACTUS ? STR_2810_CACTUS_PLANTS : STR_280E_TREES;
00560 }
00561
00562 td->owner[0] = GetTileOwner(tile);
00563 }
00564
00565 static void TileLoopTreesDesert(TileIndex tile)
00566 {
00567 switch (GetTropicZone(tile)) {
00568 case TROPICZONE_DESERT:
00569 if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT) {
00570 SetTreeGroundDensity(tile, TREE_GROUND_SNOW_DESERT, 3);
00571 MarkTileDirtyByTile(tile);
00572 }
00573 break;
00574
00575 case TROPICZONE_RAINFOREST: {
00576 static const SoundFx forest_sounds[] = {
00577 SND_42_LOON_BIRD,
00578 SND_43_LION,
00579 SND_44_MONKEYS,
00580 SND_48_DISTANT_BIRD
00581 };
00582 uint32 r = Random();
00583
00584 if (Chance16I(1, 200, r)) SndPlayTileFx(forest_sounds[GB(r, 16, 2)], tile);
00585 break;
00586 }
00587
00588 default: break;
00589 }
00590 }
00591
00592 static void TileLoopTreesAlps(TileIndex tile)
00593 {
00594 int k = GetTileZ(tile) - GetSnowLine() + TILE_HEIGHT;
00595
00596 if (k < 0) {
00597 if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT) return;
00598 SetTreeGroundDensity(tile, TREE_GROUND_GRASS, 3);
00599 } else {
00600 uint density = min((uint)k / TILE_HEIGHT, 3);
00601
00602 if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT ||
00603 GetTreeDensity(tile) != density) {
00604 SetTreeGroundDensity(tile, TREE_GROUND_SNOW_DESERT, density);
00605 } else {
00606 if (GetTreeDensity(tile) == 3) {
00607 uint32 r = Random();
00608 if (Chance16I(1, 200, r)) {
00609 SndPlayTileFx((r & 0x80000000) ? SND_39_HEAVY_WIND : SND_34_WIND, tile);
00610 }
00611 }
00612 return;
00613 }
00614 }
00615 MarkTileDirtyByTile(tile);
00616 }
00617
00618 static void TileLoop_Trees(TileIndex tile)
00619 {
00620 if (GetTreeGround(tile) == TREE_GROUND_SHORE) {
00621 TileLoop_Water(tile);
00622 } else {
00623 switch (_settings_game.game_creation.landscape) {
00624 case LT_TROPIC: TileLoopTreesDesert(tile); break;
00625 case LT_ARCTIC: TileLoopTreesAlps(tile); break;
00626 }
00627 }
00628
00629 TileLoopClearHelper(tile);
00630
00631 uint treeCounter = GetTreeCounter(tile);
00632
00633
00634 if ((treeCounter & 7) == 7 && GetTreeGround(tile) == TREE_GROUND_GRASS) {
00635 uint density = GetTreeDensity(tile);
00636 if (density < 3) {
00637 SetTreeGroundDensity(tile, TREE_GROUND_GRASS, density + 1);
00638 MarkTileDirtyByTile(tile);
00639 }
00640 }
00641 if (GetTreeCounter(tile) < 15) {
00642 AddTreeCounter(tile, 1);
00643 return;
00644 }
00645 SetTreeCounter(tile, 0);
00646
00647 switch (GetTreeGrowth(tile)) {
00648 case 3:
00649 if (_settings_game.game_creation.landscape == LT_TROPIC &&
00650 GetTreeType(tile) != TREE_CACTUS &&
00651 GetTropicZone(tile) == TROPICZONE_DESERT) {
00652 AddTreeGrowth(tile, 1);
00653 } else {
00654 switch (GB(Random(), 0, 3)) {
00655 case 0:
00656 AddTreeGrowth(tile, 1);
00657 break;
00658
00659 case 1:
00660 if (GetTreeCount(tile) < 4) {
00661 AddTreeCount(tile, 1);
00662 SetTreeGrowth(tile, 0);
00663 break;
00664 }
00665
00666
00667 case 2: {
00668 TreeType treetype = GetTreeType(tile);
00669
00670 tile += TileOffsByDir((Direction)(Random() & 7));
00671
00672
00673 if (!CanPlantTreesOnTile(tile, false)) return;
00674
00675
00676 if (IsTileType(tile, MP_CLEAR) && GetClearGround(tile) == CLEAR_GRASS && GetClearDensity(tile) != 3) return;
00677
00678 PlantTreesOnTile(tile, treetype, 0, 0);
00679
00680 break;
00681 }
00682
00683 default:
00684 return;
00685 }
00686 }
00687 break;
00688
00689 case 6:
00690 if (GetTreeCount(tile) > 1) {
00691
00692 AddTreeCount(tile, -1);
00693 SetTreeGrowth(tile, 3);
00694 } else {
00695
00696 switch (GetTreeGround(tile)) {
00697 case TREE_GROUND_SHORE: MakeShore(tile); break;
00698 case TREE_GROUND_GRASS: MakeClear(tile, CLEAR_GRASS, GetTreeDensity(tile)); break;
00699 case TREE_GROUND_ROUGH: MakeClear(tile, CLEAR_ROUGH, 3); break;
00700 default:
00701 MakeClear(tile, _settings_game.game_creation.landscape == LT_TROPIC ? CLEAR_DESERT : CLEAR_SNOW, GetTreeDensity(tile));
00702 break;
00703 }
00704 }
00705 break;
00706
00707 default:
00708 AddTreeGrowth(tile, 1);
00709 break;
00710 }
00711
00712 MarkTileDirtyByTile(tile);
00713 }
00714
00715 void OnTick_Trees()
00716 {
00717 uint32 r;
00718 TileIndex tile;
00719 TreeType tree;
00720
00721
00722 if (_settings_game.game_creation.landscape == LT_TROPIC &&
00723 (r = Random(), tile = RandomTileSeed(r), GetTropicZone(tile) == TROPICZONE_RAINFOREST) &&
00724 CanPlantTreesOnTile(tile, false) &&
00725 (tree = GetRandomTreeType(tile, GB(r, 24, 8))) != TREE_INVALID) {
00726 PlantTreesOnTile(tile, tree, 0, 0);
00727 }
00728
00729
00730 if (--_trees_tick_ctr != 0) return;
00731
00732
00733 r = Random();
00734 tile = RandomTileSeed(r);
00735 if (CanPlantTreesOnTile(tile, false) && (tree = GetRandomTreeType(tile, GB(r, 24, 8))) != TREE_INVALID) {
00736 PlantTreesOnTile(tile, tree, 0, 0);
00737 }
00738 }
00739
00740 static TrackStatus GetTileTrackStatus_Trees(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
00741 {
00742 return 0;
00743 }
00744
00745 static void ChangeTileOwner_Trees(TileIndex tile, Owner old_owner, Owner new_owner)
00746 {
00747
00748 }
00749
00750 void InitializeTrees()
00751 {
00752 _trees_tick_ctr = 0;
00753 }
00754
00755 static CommandCost TerraformTile_Trees(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
00756 {
00757 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00758 }
00759
00760
00761 extern const TileTypeProcs _tile_type_trees_procs = {
00762 DrawTile_Trees,
00763 GetSlopeZ_Trees,
00764 ClearTile_Trees,
00765 GetAcceptedCargo_Trees,
00766 GetTileDesc_Trees,
00767 GetTileTrackStatus_Trees,
00768 NULL,
00769 NULL,
00770 TileLoop_Trees,
00771 ChangeTileOwner_Trees,
00772 NULL,
00773 NULL,
00774 GetFoundation_Trees,
00775 TerraformTile_Trees,
00776 };