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00012 #include "stdafx.h"
00013 #include "clear_map.h"
00014 #include "landscape.h"
00015 #include "tree_map.h"
00016 #include "viewport_func.h"
00017 #include "command_func.h"
00018 #include "economy_func.h"
00019 #include "town.h"
00020 #include "variables.h"
00021 #include "genworld.h"
00022 #include "transparency.h"
00023 #include "functions.h"
00024 #include "company_func.h"
00025 #include "sound_func.h"
00026 #include "water_map.h"
00027 #include "water.h"
00028 #include "landscape_type.h"
00029 #include "company_base.h"
00030 #include "core/random_func.hpp"
00031
00032 #include "table/strings.h"
00033 #include "table/sprites.h"
00034 #include "table/tree_land.h"
00035 #include "table/clear_land.h"
00036
00042 enum TreePlacer {
00043 TP_NONE,
00044 TP_ORIGINAL,
00045 TP_IMPROVED,
00046 };
00047
00049 enum ExtraTreePlacement {
00050 ETP_NONE,
00051 ETP_RAINFOREST,
00052 ETP_ALL,
00053 };
00054
00055
00064 static bool CanPlantTreesOnTile(TileIndex tile, bool allow_desert)
00065 {
00066 switch (GetTileType(tile)) {
00067 case MP_WATER:
00068 return !IsBridgeAbove(tile) && IsCoast(tile) && !IsSlopeWithOneCornerRaised(GetTileSlope(tile, NULL));
00069
00070 case MP_CLEAR:
00071 return !IsBridgeAbove(tile) && !IsClearGround(tile, CLEAR_FIELDS) && GetRawClearGround(tile) != CLEAR_ROCKS &&
00072 (allow_desert || !IsClearGround(tile, CLEAR_DESERT));
00073
00074 default: return false;
00075 }
00076 }
00077
00089 static void PlantTreesOnTile(TileIndex tile, TreeType treetype, uint count, uint growth)
00090 {
00091 assert(treetype != TREE_INVALID);
00092 assert(CanPlantTreesOnTile(tile, true));
00093
00094 TreeGround ground;
00095 uint density = 3;
00096
00097 switch (GetTileType(tile)) {
00098 case MP_WATER:
00099 ground = TREE_GROUND_SHORE;
00100 break;
00101
00102 case MP_CLEAR:
00103 switch (GetClearGround(tile)) {
00104 case CLEAR_GRASS: ground = TREE_GROUND_GRASS; break;
00105 case CLEAR_ROUGH: ground = TREE_GROUND_ROUGH; break;
00106 case CLEAR_SNOW: ground = GetRawClearGround(tile) == CLEAR_ROUGH ? TREE_GROUND_ROUGH_SNOW : TREE_GROUND_SNOW_DESERT; break;
00107 default: ground = TREE_GROUND_SNOW_DESERT; break;
00108 }
00109 if (GetClearGround(tile) != CLEAR_ROUGH) density = GetClearDensity(tile);
00110 break;
00111
00112 default: NOT_REACHED();
00113 }
00114
00115 MakeTree(tile, treetype, count, growth, ground, density);
00116 }
00117
00129 static TreeType GetRandomTreeType(TileIndex tile, uint seed)
00130 {
00131 switch (_settings_game.game_creation.landscape) {
00132 case LT_TEMPERATE:
00133 return (TreeType)(seed * TREE_COUNT_TEMPERATE / 256 + TREE_TEMPERATE);
00134
00135 case LT_ARCTIC:
00136 return (TreeType)(seed * TREE_COUNT_SUB_ARCTIC / 256 + TREE_SUB_ARCTIC);
00137
00138 case LT_TROPIC:
00139 switch (GetTropicZone(tile)) {
00140 case TROPICZONE_NORMAL: return (TreeType)(seed * TREE_COUNT_SUB_TROPICAL / 256 + TREE_SUB_TROPICAL);
00141 case TROPICZONE_DESERT: return (TreeType)((seed > 12) ? TREE_INVALID : TREE_CACTUS);
00142 default: return (TreeType)(seed * TREE_COUNT_RAINFOREST / 256 + TREE_RAINFOREST);
00143 }
00144
00145 default:
00146 return (TreeType)(seed * TREE_COUNT_TOYLAND / 256 + TREE_TOYLAND);
00147 }
00148 }
00149
00159 static void PlaceTree(TileIndex tile, uint32 r)
00160 {
00161 TreeType tree = GetRandomTreeType(tile, GB(r, 24, 8));
00162
00163 if (tree != TREE_INVALID) {
00164 PlantTreesOnTile(tile, tree, GB(r, 22, 2), min(GB(r, 16, 3), 6));
00165
00166
00167 TreeGround ground = GetTreeGround(tile);
00168 if (ground != TREE_GROUND_SNOW_DESERT && ground != TREE_GROUND_ROUGH_SNOW && ground != TREE_GROUND_SHORE) {
00169 SetTreeGroundDensity(tile, (TreeGround)GB(r, 28, 1), 3);
00170 }
00171
00172
00173 SetTreeCounter(tile, (TreeGround)GB(r, 24, 4));
00174 }
00175 }
00176
00186 static void DoPlaceMoreTrees(TileIndex tile)
00187 {
00188 uint i;
00189
00190 for (i = 0; i < 1000; i++) {
00191 uint32 r = Random();
00192 int x = GB(r, 0, 5) - 16;
00193 int y = GB(r, 8, 5) - 16;
00194 uint dist = abs(x) + abs(y);
00195 TileIndex cur_tile = TileAddWrap(tile, x, y);
00196
00197 if (cur_tile != INVALID_TILE && dist <= 13 && CanPlantTreesOnTile(cur_tile, true)) {
00198 PlaceTree(cur_tile, r);
00199 }
00200 }
00201 }
00202
00208 static void PlaceMoreTrees()
00209 {
00210 uint i = ScaleByMapSize(GB(Random(), 0, 5) + 25);
00211 do {
00212 DoPlaceMoreTrees(RandomTile());
00213 } while (--i);
00214 }
00215
00225 static void PlaceTreeAtSameHeight(TileIndex tile, uint height)
00226 {
00227 uint i;
00228
00229 for (i = 0; i < 1000; i++) {
00230 uint32 r = Random();
00231 int x = GB(r, 0, 5) - 16;
00232 int y = GB(r, 8, 5) - 16;
00233 TileIndex cur_tile = TileAddWrap(tile, x, y);
00234 if (cur_tile == INVALID_TILE) continue;
00235
00236
00237 if (abs(x) + abs(y) > 16) continue;
00238
00239
00240 if (!CanPlantTreesOnTile(cur_tile, true)) continue;
00241
00242
00243 if (Delta(GetTileZ(cur_tile), height) > 2) continue;
00244
00245
00246 PlaceTree(cur_tile, r);
00247 break;
00248 }
00249 }
00250
00256 void PlaceTreesRandomly()
00257 {
00258 uint i, j, ht;
00259
00260 i = ScaleByMapSize(1000);
00261 do {
00262 uint32 r = Random();
00263 TileIndex tile = RandomTileSeed(r);
00264
00265 IncreaseGeneratingWorldProgress(GWP_TREE);
00266
00267 if (CanPlantTreesOnTile(tile, true)) {
00268 PlaceTree(tile, r);
00269 if (_settings_game.game_creation.tree_placer != TP_IMPROVED) continue;
00270
00271
00272
00273
00274 ht = GetTileZ(tile);
00275
00276 j = GetTileZ(tile) / TILE_HEIGHT * 2;
00277 while (j--) {
00278
00279 if (_settings_game.game_creation.landscape == LT_ARCTIC && ht > GetSnowLine()) {
00280 PlaceTreeAtSameHeight(tile, ht);
00281 PlaceTreeAtSameHeight(tile, ht);
00282 };
00283
00284 PlaceTreeAtSameHeight(tile, ht);
00285 }
00286 }
00287 } while (--i);
00288
00289
00290 if (_settings_game.game_creation.landscape == LT_TROPIC) {
00291 i = ScaleByMapSize(15000);
00292
00293 do {
00294 uint32 r = Random();
00295 TileIndex tile = RandomTileSeed(r);
00296
00297 IncreaseGeneratingWorldProgress(GWP_TREE);
00298
00299 if (GetTropicZone(tile) == TROPICZONE_RAINFOREST && CanPlantTreesOnTile(tile, false)) {
00300 PlaceTree(tile, r);
00301 }
00302 } while (--i);
00303 }
00304 }
00305
00312 void GenerateTrees()
00313 {
00314 uint i, total;
00315
00316 if (_settings_game.game_creation.tree_placer == TP_NONE) return;
00317
00318 if (_settings_game.game_creation.landscape != LT_TOYLAND) PlaceMoreTrees();
00319
00320 switch (_settings_game.game_creation.tree_placer) {
00321 case TP_ORIGINAL: i = _settings_game.game_creation.landscape == LT_ARCTIC ? 15 : 6; break;
00322 case TP_IMPROVED: i = _settings_game.game_creation.landscape == LT_ARCTIC ? 4 : 2; break;
00323 default: NOT_REACHED();
00324 }
00325
00326 total = ScaleByMapSize(1000);
00327 if (_settings_game.game_creation.landscape == LT_TROPIC) total += ScaleByMapSize(15000);
00328 total *= i;
00329 SetGeneratingWorldProgress(GWP_TREE, total);
00330
00331 for (; i != 0; i--) {
00332 PlaceTreesRandomly();
00333 }
00334 }
00335
00344 CommandCost CmdPlantTree(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00345 {
00346 StringID msg = INVALID_STRING_ID;
00347 CommandCost cost(EXPENSES_OTHER);
00348
00349 if (p2 >= MapSize()) return CMD_ERROR;
00350
00351 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;
00352
00353 TileArea ta(tile, p2);
00354 TILE_AREA_LOOP(tile, ta) {
00355 switch (GetTileType(tile)) {
00356 case MP_TREES:
00357
00358 if (_game_mode != GM_EDITOR && GetTreeCount(tile) == 4) {
00359 msg = STR_ERROR_TREE_ALREADY_HERE;
00360 continue;
00361 }
00362
00363 if (flags & DC_EXEC) {
00364 AddTreeCount(tile, 1);
00365 MarkTileDirtyByTile(tile);
00366 }
00367
00368 cost.AddCost(_price[PR_BUILD_TREES] * 2);
00369 break;
00370
00371 case MP_WATER:
00372 if (!IsCoast(tile) || IsSlopeWithOneCornerRaised(GetTileSlope(tile, NULL))) {
00373 msg = STR_ERROR_CAN_T_BUILD_ON_WATER;
00374 continue;
00375 }
00376
00377 case MP_CLEAR:
00378 if (IsBridgeAbove(tile)) {
00379 msg = STR_ERROR_SITE_UNSUITABLE;
00380 continue;
00381 }
00382
00383 if (IsTileType(tile, MP_CLEAR)) {
00384
00385 switch (GetRawClearGround(tile)) {
00386 case CLEAR_FIELDS:
00387 case CLEAR_ROCKS: {
00388 CommandCost ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00389 if (ret.Failed()) return ret;
00390 cost.AddCost(ret);
00391 break;
00392 }
00393
00394 default: break;
00395 }
00396 }
00397
00398 if (_game_mode != GM_EDITOR && Company::IsValidID(_current_company)) {
00399 Town *t = ClosestTownFromTile(tile, _settings_game.economy.dist_local_authority);
00400 if (t != NULL) ChangeTownRating(t, RATING_TREE_UP_STEP, RATING_TREE_MAXIMUM, flags);
00401 }
00402
00403 if (flags & DC_EXEC) {
00404 TreeType treetype;
00405
00406 treetype = (TreeType)p1;
00407 if (treetype == TREE_INVALID) {
00408 treetype = GetRandomTreeType(tile, GB(Random(), 24, 8));
00409 if (treetype == TREE_INVALID) treetype = TREE_CACTUS;
00410 }
00411
00412
00413 PlantTreesOnTile(tile, treetype, 0, _game_mode == GM_EDITOR ? 3 : 0);
00414 MarkTileDirtyByTile(tile);
00415
00416
00417 if (_game_mode == GM_EDITOR && IsInsideMM(treetype, TREE_RAINFOREST, TREE_CACTUS))
00418 SetTropicZone(tile, TROPICZONE_RAINFOREST);
00419 }
00420 cost.AddCost(_price[PR_BUILD_TREES]);
00421 break;
00422
00423 default:
00424 msg = STR_ERROR_SITE_UNSUITABLE;
00425 break;
00426 }
00427 }
00428
00429 if (cost.GetCost() == 0) {
00430 return_cmd_error(msg);
00431 } else {
00432 return cost;
00433 }
00434 }
00435
00436 struct TreeListEnt {
00437 SpriteID image;
00438 SpriteID pal;
00439 byte x, y;
00440 };
00441
00442 static void DrawTile_Trees(TileInfo *ti)
00443 {
00444 switch (GetTreeGround(ti->tile)) {
00445 case TREE_GROUND_SHORE: DrawShoreTile(ti->tileh); break;
00446 case TREE_GROUND_GRASS: DrawClearLandTile(ti, GetTreeDensity(ti->tile)); break;
00447 case TREE_GROUND_ROUGH: DrawHillyLandTile(ti); break;
00448 default: DrawGroundSprite(_clear_land_sprites_snow_desert[GetTreeDensity(ti->tile)] + _tileh_to_sprite[ti->tileh], PAL_NONE); break;
00449 }
00450
00451 DrawClearLandFence(ti);
00452
00453
00454 if (IsInvisibilitySet(TO_TREES)) return;
00455
00456 uint tmp = CountBits(ti->tile + ti->x + ti->y);
00457 uint index = GB(tmp, 0, 2) + (GetTreeType(ti->tile) << 2);
00458
00459
00460 if ((GetTreeGround(ti->tile) == TREE_GROUND_SNOW_DESERT || GetTreeGround(ti->tile) == TREE_GROUND_ROUGH_SNOW) &&
00461 GetTreeDensity(ti->tile) >= 2 &&
00462 IsInsideMM(index, TREE_SUB_ARCTIC << 2, TREE_RAINFOREST << 2)) {
00463 index += 164 - (TREE_SUB_ARCTIC << 2);
00464 }
00465
00466 assert(index < lengthof(_tree_layout_sprite));
00467
00468 const PalSpriteID *s = _tree_layout_sprite[index];
00469 const TreePos *d = _tree_layout_xy[GB(tmp, 2, 2)];
00470
00471
00472 StartSpriteCombine();
00473
00474 TreeListEnt te[4];
00475
00476
00477 uint trees = GetTreeCount(ti->tile);
00478
00479 for (uint i = 0; i < trees; i++) {
00480 SpriteID image = s[0].sprite + (i == trees - 1 ? GetTreeGrowth(ti->tile) : 3);
00481 SpriteID pal = s[0].pal;
00482
00483 te[i].image = image;
00484 te[i].pal = pal;
00485 te[i].x = d->x;
00486 te[i].y = d->y;
00487 s++;
00488 d++;
00489 }
00490
00491
00492 byte z = ti->z + GetSlopeMaxZ(ti->tileh) / 2;
00493
00494 for (; trees > 0; trees--) {
00495 uint min = te[0].x + te[0].y;
00496 uint mi = 0;
00497
00498 for (uint i = 1; i < trees; i++) {
00499 if ((uint)(te[i].x + te[i].y) < min) {
00500 min = te[i].x + te[i].y;
00501 mi = i;
00502 }
00503 }
00504
00505 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);
00506
00507
00508 te[mi] = te[trees - 1];
00509 }
00510
00511 EndSpriteCombine();
00512 }
00513
00514
00515 static uint GetSlopeZ_Trees(TileIndex tile, uint x, uint y)
00516 {
00517 uint z;
00518 Slope tileh = GetTileSlope(tile, &z);
00519
00520 return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
00521 }
00522
00523 static Foundation GetFoundation_Trees(TileIndex tile, Slope tileh)
00524 {
00525 return FOUNDATION_NONE;
00526 }
00527
00528 static CommandCost ClearTile_Trees(TileIndex tile, DoCommandFlag flags)
00529 {
00530 uint num;
00531
00532 if (Company::IsValidID(_current_company)) {
00533 Town *t = ClosestTownFromTile(tile, _settings_game.economy.dist_local_authority);
00534 if (t != NULL) ChangeTownRating(t, RATING_TREE_DOWN_STEP, RATING_TREE_MINIMUM, flags);
00535 }
00536
00537 num = GetTreeCount(tile);
00538 if (IsInsideMM(GetTreeType(tile), TREE_RAINFOREST, TREE_CACTUS)) num *= 4;
00539
00540 if (flags & DC_EXEC) DoClearSquare(tile);
00541
00542 return CommandCost(EXPENSES_CONSTRUCTION, num * _price[PR_CLEAR_TREES]);
00543 }
00544
00545 static void GetTileDesc_Trees(TileIndex tile, TileDesc *td)
00546 {
00547 TreeType tt = GetTreeType(tile);
00548
00549 if (IsInsideMM(tt, TREE_RAINFOREST, TREE_CACTUS)) {
00550 td->str = STR_LAI_TREE_NAME_RAINFOREST;
00551 } else {
00552 td->str = tt == TREE_CACTUS ? STR_LAI_TREE_NAME_CACTUS_PLANTS : STR_LAI_TREE_NAME_TREES;
00553 }
00554
00555 td->owner[0] = GetTileOwner(tile);
00556 }
00557
00558 static void TileLoopTreesDesert(TileIndex tile)
00559 {
00560 switch (GetTropicZone(tile)) {
00561 case TROPICZONE_DESERT:
00562 if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT) {
00563 SetTreeGroundDensity(tile, TREE_GROUND_SNOW_DESERT, 3);
00564 MarkTileDirtyByTile(tile);
00565 }
00566 break;
00567
00568 case TROPICZONE_RAINFOREST: {
00569 static const SoundFx forest_sounds[] = {
00570 SND_42_LOON_BIRD,
00571 SND_43_LION,
00572 SND_44_MONKEYS,
00573 SND_48_DISTANT_BIRD
00574 };
00575 uint32 r = Random();
00576
00577 if (Chance16I(1, 200, r)) SndPlayTileFx(forest_sounds[GB(r, 16, 2)], tile);
00578 break;
00579 }
00580
00581 default: break;
00582 }
00583 }
00584
00585 static void TileLoopTreesAlps(TileIndex tile)
00586 {
00587 int k = GetTileZ(tile) - GetSnowLine() + TILE_HEIGHT;
00588
00589 if (k < 0) {
00590 switch (GetTreeGround(tile)) {
00591 case TREE_GROUND_SNOW_DESERT: SetTreeGroundDensity(tile, TREE_GROUND_GRASS, 3); break;
00592 case TREE_GROUND_ROUGH_SNOW: SetTreeGroundDensity(tile, TREE_GROUND_ROUGH, 3); break;
00593 default: return;
00594 }
00595 } else {
00596 uint density = min((uint)k / TILE_HEIGHT, 3);
00597
00598 if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT && GetTreeGround(tile) != TREE_GROUND_ROUGH_SNOW) {
00599 TreeGround tg = GetTreeGround(tile) == TREE_GROUND_ROUGH ? TREE_GROUND_ROUGH_SNOW : TREE_GROUND_SNOW_DESERT;
00600 SetTreeGroundDensity(tile, tg, density);
00601 } else if (GetTreeDensity(tile) != density) {
00602 SetTreeGroundDensity(tile, GetTreeGround(tile), density);
00603 } else {
00604 if (GetTreeDensity(tile) == 3) {
00605 uint32 r = Random();
00606 if (Chance16I(1, 200, r)) {
00607 SndPlayTileFx((r & 0x80000000) ? SND_39_HEAVY_WIND : SND_34_WIND, tile);
00608 }
00609 }
00610 return;
00611 }
00612 }
00613 MarkTileDirtyByTile(tile);
00614 }
00615
00616 static void TileLoop_Trees(TileIndex tile)
00617 {
00618 if (GetTreeGround(tile) == TREE_GROUND_SHORE) {
00619 TileLoop_Water(tile);
00620 } else {
00621 switch (_settings_game.game_creation.landscape) {
00622 case LT_TROPIC: TileLoopTreesDesert(tile); break;
00623 case LT_ARCTIC: TileLoopTreesAlps(tile); break;
00624 }
00625 }
00626
00627 TileLoopClearHelper(tile);
00628
00629 uint treeCounter = GetTreeCounter(tile);
00630
00631
00632 if ((treeCounter & 7) == 7 && GetTreeGround(tile) == TREE_GROUND_GRASS) {
00633 uint density = GetTreeDensity(tile);
00634 if (density < 3) {
00635 SetTreeGroundDensity(tile, TREE_GROUND_GRASS, density + 1);
00636 MarkTileDirtyByTile(tile);
00637 }
00638 }
00639 if (GetTreeCounter(tile) < 15) {
00640 AddTreeCounter(tile, 1);
00641 return;
00642 }
00643 SetTreeCounter(tile, 0);
00644
00645 switch (GetTreeGrowth(tile)) {
00646 case 3:
00647 if (_settings_game.game_creation.landscape == LT_TROPIC &&
00648 GetTreeType(tile) != TREE_CACTUS &&
00649 GetTropicZone(tile) == TROPICZONE_DESERT) {
00650 AddTreeGrowth(tile, 1);
00651 } else {
00652 switch (GB(Random(), 0, 3)) {
00653 case 0:
00654 AddTreeGrowth(tile, 1);
00655 break;
00656
00657 case 1:
00658 if (GetTreeCount(tile) < 4) {
00659 AddTreeCount(tile, 1);
00660 SetTreeGrowth(tile, 0);
00661 break;
00662 }
00663
00664
00665 case 2: {
00666
00667 if ((_settings_game.game_creation.landscape == LT_TROPIC && GetTropicZone(tile) == TROPICZONE_RAINFOREST) ?
00668 _settings_game.construction.extra_tree_placement == ETP_NONE :
00669 _settings_game.construction.extra_tree_placement != ETP_ALL) {
00670 break;
00671 }
00672
00673 TreeType treetype = GetTreeType(tile);
00674
00675 tile += TileOffsByDir((Direction)(Random() & 7));
00676
00677
00678 if (!CanPlantTreesOnTile(tile, false)) return;
00679
00680
00681 if (IsTileType(tile, MP_CLEAR) && GetClearGround(tile) == CLEAR_GRASS && GetClearDensity(tile) != 3) return;
00682
00683 PlantTreesOnTile(tile, treetype, 0, 0);
00684
00685 break;
00686 }
00687
00688 default:
00689 return;
00690 }
00691 }
00692 break;
00693
00694 case 6:
00695 if (GetTreeCount(tile) > 1) {
00696
00697 AddTreeCount(tile, -1);
00698 SetTreeGrowth(tile, 3);
00699 } else {
00700
00701 switch (GetTreeGround(tile)) {
00702 case TREE_GROUND_SHORE: MakeShore(tile); break;
00703 case TREE_GROUND_GRASS: MakeClear(tile, CLEAR_GRASS, GetTreeDensity(tile)); break;
00704 case TREE_GROUND_ROUGH: MakeClear(tile, CLEAR_ROUGH, 3); break;
00705 case TREE_GROUND_ROUGH_SNOW: {
00706 uint density = GetTreeDensity(tile);
00707 MakeClear(tile, CLEAR_ROUGH, 3);
00708 MakeSnow(tile, density);
00709 break;
00710 }
00711 default:
00712 if (_settings_game.game_creation.landscape == LT_TROPIC) {
00713 MakeClear(tile, CLEAR_DESERT, GetTreeDensity(tile));
00714 } else {
00715 uint density = GetTreeDensity(tile);
00716 MakeClear(tile, CLEAR_GRASS, 3);
00717 MakeSnow(tile, density);
00718 }
00719 break;
00720 }
00721 }
00722 break;
00723
00724 default:
00725 AddTreeGrowth(tile, 1);
00726 break;
00727 }
00728
00729 MarkTileDirtyByTile(tile);
00730 }
00731
00732 void OnTick_Trees()
00733 {
00734
00735 if (_settings_game.construction.extra_tree_placement == ETP_NONE) return;
00736
00737 uint32 r;
00738 TileIndex tile;
00739 TreeType tree;
00740
00741
00742 if (_settings_game.game_creation.landscape == LT_TROPIC &&
00743 (r = Random(), tile = RandomTileSeed(r), GetTropicZone(tile) == TROPICZONE_RAINFOREST) &&
00744 CanPlantTreesOnTile(tile, false) &&
00745 (tree = GetRandomTreeType(tile, GB(r, 24, 8))) != TREE_INVALID) {
00746 PlantTreesOnTile(tile, tree, 0, 0);
00747 }
00748
00749
00750 if (--_trees_tick_ctr != 0 || _settings_game.construction.extra_tree_placement != ETP_ALL) return;
00751
00752
00753 r = Random();
00754 tile = RandomTileSeed(r);
00755 if (CanPlantTreesOnTile(tile, false) && (tree = GetRandomTreeType(tile, GB(r, 24, 8))) != TREE_INVALID) {
00756 PlantTreesOnTile(tile, tree, 0, 0);
00757 }
00758 }
00759
00760 static TrackStatus GetTileTrackStatus_Trees(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
00761 {
00762 return 0;
00763 }
00764
00765 static void ChangeTileOwner_Trees(TileIndex tile, Owner old_owner, Owner new_owner)
00766 {
00767
00768 }
00769
00770 void InitializeTrees()
00771 {
00772 _trees_tick_ctr = 0;
00773 }
00774
00775 static CommandCost TerraformTile_Trees(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
00776 {
00777 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00778 }
00779
00780
00781 extern const TileTypeProcs _tile_type_trees_procs = {
00782 DrawTile_Trees,
00783 GetSlopeZ_Trees,
00784 ClearTile_Trees,
00785 NULL,
00786 GetTileDesc_Trees,
00787 GetTileTrackStatus_Trees,
00788 NULL,
00789 NULL,
00790 TileLoop_Trees,
00791 ChangeTileOwner_Trees,
00792 NULL,
00793 NULL,
00794 GetFoundation_Trees,
00795 TerraformTile_Trees,
00796 };