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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 const byte tree_to_plant = GB(p1, 0, 8);
00349
00350 if (p2 >= MapSize()) return CMD_ERROR;
00351
00352 if (tree_to_plant != TREE_INVALID && !IsInsideBS(tree_to_plant, _tree_base_by_landscape[_settings_game.game_creation.landscape], _tree_count_by_landscape[_settings_game.game_creation.landscape])) return CMD_ERROR;
00353
00354 TileArea ta(tile, p2);
00355 TILE_AREA_LOOP(tile, ta) {
00356 switch (GetTileType(tile)) {
00357 case MP_TREES:
00358
00359 if (_game_mode != GM_EDITOR && GetTreeCount(tile) == 4) {
00360 msg = STR_ERROR_TREE_ALREADY_HERE;
00361 continue;
00362 }
00363
00364 if (flags & DC_EXEC) {
00365 AddTreeCount(tile, 1);
00366 MarkTileDirtyByTile(tile);
00367 }
00368
00369 cost.AddCost(_price[PR_BUILD_TREES] * 2);
00370 break;
00371
00372 case MP_WATER:
00373 if (!IsCoast(tile) || IsSlopeWithOneCornerRaised(GetTileSlope(tile, NULL))) {
00374 msg = STR_ERROR_CAN_T_BUILD_ON_WATER;
00375 continue;
00376 }
00377
00378 case MP_CLEAR: {
00379 if (IsBridgeAbove(tile)) {
00380 msg = STR_ERROR_SITE_UNSUITABLE;
00381 continue;
00382 }
00383
00384 TreeType treetype = (TreeType)tree_to_plant;
00385
00386 if (_settings_game.game_creation.landscape == LT_TROPIC && treetype != TREE_INVALID && (
00387
00388 (treetype == TREE_CACTUS && GetTropicZone(tile) != TROPICZONE_DESERT) ||
00389
00390 (IsInsideMM(treetype, TREE_RAINFOREST, TREE_CACTUS) && GetTropicZone(tile) != TROPICZONE_RAINFOREST && _game_mode != GM_EDITOR) ||
00391
00392 (IsInsideMM(treetype, TREE_SUB_TROPICAL, TREE_TOYLAND) && GetTropicZone(tile) != TROPICZONE_NORMAL))) {
00393 msg = STR_ERROR_TREE_WRONG_TERRAIN_FOR_TREE_TYPE;
00394 continue;
00395 }
00396
00397 if (IsTileType(tile, MP_CLEAR)) {
00398
00399 switch (GetRawClearGround(tile)) {
00400 case CLEAR_FIELDS:
00401 case CLEAR_ROCKS: {
00402 CommandCost ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00403 if (ret.Failed()) return ret;
00404 cost.AddCost(ret);
00405 break;
00406 }
00407
00408 default: break;
00409 }
00410 }
00411
00412 if (_game_mode != GM_EDITOR && Company::IsValidID(_current_company)) {
00413 Town *t = ClosestTownFromTile(tile, _settings_game.economy.dist_local_authority);
00414 if (t != NULL) ChangeTownRating(t, RATING_TREE_UP_STEP, RATING_TREE_MAXIMUM, flags);
00415 }
00416
00417 if (flags & DC_EXEC) {
00418 if (treetype == TREE_INVALID) {
00419 treetype = GetRandomTreeType(tile, GB(Random(), 24, 8));
00420 if (treetype == TREE_INVALID) treetype = TREE_CACTUS;
00421 }
00422
00423
00424 PlantTreesOnTile(tile, treetype, 0, _game_mode == GM_EDITOR ? 3 : 0);
00425 MarkTileDirtyByTile(tile);
00426
00427
00428 if (_game_mode == GM_EDITOR && IsInsideMM(treetype, TREE_RAINFOREST, TREE_CACTUS)) {
00429 SetTropicZone(tile, TROPICZONE_RAINFOREST);
00430 }
00431 }
00432 cost.AddCost(_price[PR_BUILD_TREES]);
00433 } break;
00434
00435 default:
00436 msg = STR_ERROR_SITE_UNSUITABLE;
00437 break;
00438 }
00439 }
00440
00441 if (cost.GetCost() == 0) {
00442 return_cmd_error(msg);
00443 } else {
00444 return cost;
00445 }
00446 }
00447
00448 struct TreeListEnt : PalSpriteID {
00449 byte x, y;
00450 };
00451
00452 static void DrawTile_Trees(TileInfo *ti)
00453 {
00454 switch (GetTreeGround(ti->tile)) {
00455 case TREE_GROUND_SHORE: DrawShoreTile(ti->tileh); break;
00456 case TREE_GROUND_GRASS: DrawClearLandTile(ti, GetTreeDensity(ti->tile)); break;
00457 case TREE_GROUND_ROUGH: DrawHillyLandTile(ti); break;
00458 default: DrawGroundSprite(_clear_land_sprites_snow_desert[GetTreeDensity(ti->tile)] + _tileh_to_sprite[ti->tileh], PAL_NONE); break;
00459 }
00460
00461 DrawClearLandFence(ti);
00462
00463
00464 if (IsInvisibilitySet(TO_TREES)) return;
00465
00466 uint tmp = CountBits(ti->tile + ti->x + ti->y);
00467 uint index = GB(tmp, 0, 2) + (GetTreeType(ti->tile) << 2);
00468
00469
00470 if ((GetTreeGround(ti->tile) == TREE_GROUND_SNOW_DESERT || GetTreeGround(ti->tile) == TREE_GROUND_ROUGH_SNOW) &&
00471 GetTreeDensity(ti->tile) >= 2 &&
00472 IsInsideMM(index, TREE_SUB_ARCTIC << 2, TREE_RAINFOREST << 2)) {
00473 index += 164 - (TREE_SUB_ARCTIC << 2);
00474 }
00475
00476 assert(index < lengthof(_tree_layout_sprite));
00477
00478 const PalSpriteID *s = _tree_layout_sprite[index];
00479 const TreePos *d = _tree_layout_xy[GB(tmp, 2, 2)];
00480
00481
00482 StartSpriteCombine();
00483
00484 TreeListEnt te[4];
00485
00486
00487 uint trees = GetTreeCount(ti->tile);
00488
00489 for (uint i = 0; i < trees; i++) {
00490 SpriteID sprite = s[0].sprite + (i == trees - 1 ? GetTreeGrowth(ti->tile) : 3);
00491 PaletteID pal = s[0].pal;
00492
00493 te[i].sprite = sprite;
00494 te[i].pal = pal;
00495 te[i].x = d->x;
00496 te[i].y = d->y;
00497 s++;
00498 d++;
00499 }
00500
00501
00502 byte z = ti->z + GetSlopeMaxZ(ti->tileh) / 2;
00503
00504 for (; trees > 0; trees--) {
00505 uint min = te[0].x + te[0].y;
00506 uint mi = 0;
00507
00508 for (uint i = 1; i < trees; i++) {
00509 if ((uint)(te[i].x + te[i].y) < min) {
00510 min = te[i].x + te[i].y;
00511 mi = i;
00512 }
00513 }
00514
00515 AddSortableSpriteToDraw(te[mi].sprite, 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);
00516
00517
00518 te[mi] = te[trees - 1];
00519 }
00520
00521 EndSpriteCombine();
00522 }
00523
00524
00525 static uint GetSlopeZ_Trees(TileIndex tile, uint x, uint y)
00526 {
00527 uint z;
00528 Slope tileh = GetTileSlope(tile, &z);
00529
00530 return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
00531 }
00532
00533 static Foundation GetFoundation_Trees(TileIndex tile, Slope tileh)
00534 {
00535 return FOUNDATION_NONE;
00536 }
00537
00538 static CommandCost ClearTile_Trees(TileIndex tile, DoCommandFlag flags)
00539 {
00540 uint num;
00541
00542 if (Company::IsValidID(_current_company)) {
00543 Town *t = ClosestTownFromTile(tile, _settings_game.economy.dist_local_authority);
00544 if (t != NULL) ChangeTownRating(t, RATING_TREE_DOWN_STEP, RATING_TREE_MINIMUM, flags);
00545 }
00546
00547 num = GetTreeCount(tile);
00548 if (IsInsideMM(GetTreeType(tile), TREE_RAINFOREST, TREE_CACTUS)) num *= 4;
00549
00550 if (flags & DC_EXEC) DoClearSquare(tile);
00551
00552 return CommandCost(EXPENSES_CONSTRUCTION, num * _price[PR_CLEAR_TREES]);
00553 }
00554
00555 static void GetTileDesc_Trees(TileIndex tile, TileDesc *td)
00556 {
00557 TreeType tt = GetTreeType(tile);
00558
00559 if (IsInsideMM(tt, TREE_RAINFOREST, TREE_CACTUS)) {
00560 td->str = STR_LAI_TREE_NAME_RAINFOREST;
00561 } else {
00562 td->str = tt == TREE_CACTUS ? STR_LAI_TREE_NAME_CACTUS_PLANTS : STR_LAI_TREE_NAME_TREES;
00563 }
00564
00565 td->owner[0] = GetTileOwner(tile);
00566 }
00567
00568 static void TileLoopTreesDesert(TileIndex tile)
00569 {
00570 switch (GetTropicZone(tile)) {
00571 case TROPICZONE_DESERT:
00572 if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT) {
00573 SetTreeGroundDensity(tile, TREE_GROUND_SNOW_DESERT, 3);
00574 MarkTileDirtyByTile(tile);
00575 }
00576 break;
00577
00578 case TROPICZONE_RAINFOREST: {
00579 static const SoundFx forest_sounds[] = {
00580 SND_42_LOON_BIRD,
00581 SND_43_LION,
00582 SND_44_MONKEYS,
00583 SND_48_DISTANT_BIRD
00584 };
00585 uint32 r = Random();
00586
00587 if (Chance16I(1, 200, r)) SndPlayTileFx(forest_sounds[GB(r, 16, 2)], tile);
00588 break;
00589 }
00590
00591 default: break;
00592 }
00593 }
00594
00595 static void TileLoopTreesAlps(TileIndex tile)
00596 {
00597 int k = GetTileZ(tile) - GetSnowLine() + TILE_HEIGHT;
00598
00599 if (k < 0) {
00600 switch (GetTreeGround(tile)) {
00601 case TREE_GROUND_SNOW_DESERT: SetTreeGroundDensity(tile, TREE_GROUND_GRASS, 3); break;
00602 case TREE_GROUND_ROUGH_SNOW: SetTreeGroundDensity(tile, TREE_GROUND_ROUGH, 3); break;
00603 default: return;
00604 }
00605 } else {
00606 uint density = min((uint)k / TILE_HEIGHT, 3);
00607
00608 if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT && GetTreeGround(tile) != TREE_GROUND_ROUGH_SNOW) {
00609 TreeGround tg = GetTreeGround(tile) == TREE_GROUND_ROUGH ? TREE_GROUND_ROUGH_SNOW : TREE_GROUND_SNOW_DESERT;
00610 SetTreeGroundDensity(tile, tg, density);
00611 } else if (GetTreeDensity(tile) != density) {
00612 SetTreeGroundDensity(tile, GetTreeGround(tile), density);
00613 } else {
00614 if (GetTreeDensity(tile) == 3) {
00615 uint32 r = Random();
00616 if (Chance16I(1, 200, r)) {
00617 SndPlayTileFx((r & 0x80000000) ? SND_39_HEAVY_WIND : SND_34_WIND, tile);
00618 }
00619 }
00620 return;
00621 }
00622 }
00623 MarkTileDirtyByTile(tile);
00624 }
00625
00626 static void TileLoop_Trees(TileIndex tile)
00627 {
00628 if (GetTreeGround(tile) == TREE_GROUND_SHORE) {
00629 TileLoop_Water(tile);
00630 } else {
00631 switch (_settings_game.game_creation.landscape) {
00632 case LT_TROPIC: TileLoopTreesDesert(tile); break;
00633 case LT_ARCTIC: TileLoopTreesAlps(tile); break;
00634 }
00635 }
00636
00637 TileLoopClearHelper(tile);
00638
00639 uint treeCounter = GetTreeCounter(tile);
00640
00641
00642 if ((treeCounter & 7) == 7 && GetTreeGround(tile) == TREE_GROUND_GRASS) {
00643 uint density = GetTreeDensity(tile);
00644 if (density < 3) {
00645 SetTreeGroundDensity(tile, TREE_GROUND_GRASS, density + 1);
00646 MarkTileDirtyByTile(tile);
00647 }
00648 }
00649 if (GetTreeCounter(tile) < 15) {
00650 AddTreeCounter(tile, 1);
00651 return;
00652 }
00653 SetTreeCounter(tile, 0);
00654
00655 switch (GetTreeGrowth(tile)) {
00656 case 3:
00657 if (_settings_game.game_creation.landscape == LT_TROPIC &&
00658 GetTreeType(tile) != TREE_CACTUS &&
00659 GetTropicZone(tile) == TROPICZONE_DESERT) {
00660 AddTreeGrowth(tile, 1);
00661 } else {
00662 switch (GB(Random(), 0, 3)) {
00663 case 0:
00664 AddTreeGrowth(tile, 1);
00665 break;
00666
00667 case 1:
00668 if (GetTreeCount(tile) < 4) {
00669 AddTreeCount(tile, 1);
00670 SetTreeGrowth(tile, 0);
00671 break;
00672 }
00673
00674
00675 case 2: {
00676
00677 if ((_settings_game.game_creation.landscape == LT_TROPIC && GetTropicZone(tile) == TROPICZONE_RAINFOREST) ?
00678 _settings_game.construction.extra_tree_placement == ETP_NONE :
00679 _settings_game.construction.extra_tree_placement != ETP_ALL) {
00680 break;
00681 }
00682
00683 TreeType treetype = GetTreeType(tile);
00684
00685 tile += TileOffsByDir((Direction)(Random() & 7));
00686
00687
00688 if (!CanPlantTreesOnTile(tile, false)) return;
00689
00690
00691 if (IsTileType(tile, MP_CLEAR) && GetClearGround(tile) == CLEAR_GRASS && GetClearDensity(tile) != 3) return;
00692
00693 PlantTreesOnTile(tile, treetype, 0, 0);
00694
00695 break;
00696 }
00697
00698 default:
00699 return;
00700 }
00701 }
00702 break;
00703
00704 case 6:
00705 if (GetTreeCount(tile) > 1) {
00706
00707 AddTreeCount(tile, -1);
00708 SetTreeGrowth(tile, 3);
00709 } else {
00710
00711 switch (GetTreeGround(tile)) {
00712 case TREE_GROUND_SHORE: MakeShore(tile); break;
00713 case TREE_GROUND_GRASS: MakeClear(tile, CLEAR_GRASS, GetTreeDensity(tile)); break;
00714 case TREE_GROUND_ROUGH: MakeClear(tile, CLEAR_ROUGH, 3); break;
00715 case TREE_GROUND_ROUGH_SNOW: {
00716 uint density = GetTreeDensity(tile);
00717 MakeClear(tile, CLEAR_ROUGH, 3);
00718 MakeSnow(tile, density);
00719 break;
00720 }
00721 default:
00722 if (_settings_game.game_creation.landscape == LT_TROPIC) {
00723 MakeClear(tile, CLEAR_DESERT, GetTreeDensity(tile));
00724 } else {
00725 uint density = GetTreeDensity(tile);
00726 MakeClear(tile, CLEAR_GRASS, 3);
00727 MakeSnow(tile, density);
00728 }
00729 break;
00730 }
00731 }
00732 break;
00733
00734 default:
00735 AddTreeGrowth(tile, 1);
00736 break;
00737 }
00738
00739 MarkTileDirtyByTile(tile);
00740 }
00741
00742 void OnTick_Trees()
00743 {
00744
00745 if (_settings_game.construction.extra_tree_placement == ETP_NONE) return;
00746
00747 uint32 r;
00748 TileIndex tile;
00749 TreeType tree;
00750
00751
00752 if (_settings_game.game_creation.landscape == LT_TROPIC &&
00753 (r = Random(), tile = RandomTileSeed(r), GetTropicZone(tile) == TROPICZONE_RAINFOREST) &&
00754 CanPlantTreesOnTile(tile, false) &&
00755 (tree = GetRandomTreeType(tile, GB(r, 24, 8))) != TREE_INVALID) {
00756 PlantTreesOnTile(tile, tree, 0, 0);
00757 }
00758
00759
00760 if (--_trees_tick_ctr != 0 || _settings_game.construction.extra_tree_placement != ETP_ALL) return;
00761
00762
00763 r = Random();
00764 tile = RandomTileSeed(r);
00765 if (CanPlantTreesOnTile(tile, false) && (tree = GetRandomTreeType(tile, GB(r, 24, 8))) != TREE_INVALID) {
00766 PlantTreesOnTile(tile, tree, 0, 0);
00767 }
00768 }
00769
00770 static TrackStatus GetTileTrackStatus_Trees(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
00771 {
00772 return 0;
00773 }
00774
00775 static void ChangeTileOwner_Trees(TileIndex tile, Owner old_owner, Owner new_owner)
00776 {
00777
00778 }
00779
00780 void InitializeTrees()
00781 {
00782 _trees_tick_ctr = 0;
00783 }
00784
00785 static CommandCost TerraformTile_Trees(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
00786 {
00787 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00788 }
00789
00790
00791 extern const TileTypeProcs _tile_type_trees_procs = {
00792 DrawTile_Trees,
00793 GetSlopeZ_Trees,
00794 ClearTile_Trees,
00795 NULL,
00796 GetTileDesc_Trees,
00797 GetTileTrackStatus_Trees,
00798 NULL,
00799 NULL,
00800 TileLoop_Trees,
00801 ChangeTileOwner_Trees,
00802 NULL,
00803 NULL,
00804 GetFoundation_Trees,
00805 TerraformTile_Trees,
00806 };