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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 "town.h"
00019 #include "genworld.h"
00020 #include "clear_func.h"
00021 #include "company_func.h"
00022 #include "sound_func.h"
00023 #include "water.h"
00024 #include "company_base.h"
00025 #include "core/random_func.hpp"
00026 #include "newgrf_generic.h"
00027
00028 #include "table/strings.h"
00029 #include "table/tree_land.h"
00030 #include "table/clear_land.h"
00031
00037 enum TreePlacer {
00038 TP_NONE,
00039 TP_ORIGINAL,
00040 TP_IMPROVED,
00041 };
00042
00044 enum ExtraTreePlacement {
00045 ETP_NONE,
00046 ETP_RAINFOREST,
00047 ETP_ALL,
00048 };
00049
00051 byte _trees_tick_ctr;
00052
00053 static const uint16 DEFAULT_TREE_STEPS = 1000;
00054 static const uint16 DEFAULT_RAINFOREST_TREE_STEPS = 15000;
00055 static const uint16 EDITOR_TREE_DIV = 5;
00056
00065 static bool CanPlantTreesOnTile(TileIndex tile, bool allow_desert)
00066 {
00067 switch (GetTileType(tile)) {
00068 case MP_WATER:
00069 return !IsBridgeAbove(tile) && IsCoast(tile) && !IsSlopeWithOneCornerRaised(GetTileSlope(tile));
00070
00071 case MP_CLEAR:
00072 return !IsBridgeAbove(tile) && !IsClearGround(tile, CLEAR_FIELDS) && GetRawClearGround(tile) != CLEAR_ROCKS &&
00073 (allow_desert || !IsClearGround(tile, CLEAR_DESERT));
00074
00075 default: return false;
00076 }
00077 }
00078
00090 static void PlantTreesOnTile(TileIndex tile, TreeType treetype, uint count, uint growth)
00091 {
00092 assert(treetype != TREE_INVALID);
00093 assert(CanPlantTreesOnTile(tile, true));
00094
00095 TreeGround ground;
00096 uint density = 3;
00097
00098 switch (GetTileType(tile)) {
00099 case MP_WATER:
00100 ground = TREE_GROUND_SHORE;
00101 break;
00102
00103 case MP_CLEAR:
00104 switch (GetClearGround(tile)) {
00105 case CLEAR_GRASS: ground = TREE_GROUND_GRASS; break;
00106 case CLEAR_ROUGH: ground = TREE_GROUND_ROUGH; break;
00107 case CLEAR_SNOW: ground = GetRawClearGround(tile) == CLEAR_ROUGH ? TREE_GROUND_ROUGH_SNOW : TREE_GROUND_SNOW_DESERT; break;
00108 default: ground = TREE_GROUND_SNOW_DESERT; break;
00109 }
00110 if (GetClearGround(tile) != CLEAR_ROUGH) density = GetClearDensity(tile);
00111 break;
00112
00113 default: NOT_REACHED();
00114 }
00115
00116 MakeTree(tile, treetype, count, growth, ground, density);
00117 }
00118
00130 static TreeType GetRandomTreeType(TileIndex tile, uint seed)
00131 {
00132 switch (_settings_game.game_creation.landscape) {
00133 case LT_TEMPERATE:
00134 return (TreeType)(seed * TREE_COUNT_TEMPERATE / 256 + TREE_TEMPERATE);
00135
00136 case LT_ARCTIC:
00137 return (TreeType)(seed * TREE_COUNT_SUB_ARCTIC / 256 + TREE_SUB_ARCTIC);
00138
00139 case LT_TROPIC:
00140 switch (GetTropicZone(tile)) {
00141 case TROPICZONE_NORMAL: return (TreeType)(seed * TREE_COUNT_SUB_TROPICAL / 256 + TREE_SUB_TROPICAL);
00142 case TROPICZONE_DESERT: return (TreeType)((seed > 12) ? TREE_INVALID : TREE_CACTUS);
00143 default: return (TreeType)(seed * TREE_COUNT_RAINFOREST / 256 + TREE_RAINFOREST);
00144 }
00145
00146 default:
00147 return (TreeType)(seed * TREE_COUNT_TOYLAND / 256 + TREE_TOYLAND);
00148 }
00149 }
00150
00160 static void PlaceTree(TileIndex tile, uint32 r)
00161 {
00162 TreeType tree = GetRandomTreeType(tile, GB(r, 24, 8));
00163
00164 if (tree != TREE_INVALID) {
00165 PlantTreesOnTile(tile, tree, GB(r, 22, 2), min(GB(r, 16, 3), 6));
00166
00167
00168 TreeGround ground = GetTreeGround(tile);
00169 if (ground != TREE_GROUND_SNOW_DESERT && ground != TREE_GROUND_ROUGH_SNOW && ground != TREE_GROUND_SHORE) {
00170 SetTreeGroundDensity(tile, (TreeGround)GB(r, 28, 1), 3);
00171 }
00172
00173
00174 SetTreeCounter(tile, (TreeGround)GB(r, 24, 4));
00175 }
00176 }
00177
00184 static void PlaceTreeGroups(uint num_groups)
00185 {
00186 do {
00187 TileIndex center_tile = RandomTile();
00188
00189 for (uint i = 0; i < DEFAULT_TREE_STEPS; i++) {
00190 uint32 r = Random();
00191 int x = GB(r, 0, 5) - 16;
00192 int y = GB(r, 8, 5) - 16;
00193 uint dist = abs(x) + abs(y);
00194 TileIndex cur_tile = TileAddWrap(center_tile, x, y);
00195
00196 IncreaseGeneratingWorldProgress(GWP_TREE);
00197
00198 if (cur_tile != INVALID_TILE && dist <= 13 && CanPlantTreesOnTile(cur_tile, true)) {
00199 PlaceTree(cur_tile, r);
00200 }
00201 }
00202
00203 } while (--num_groups);
00204 }
00205
00215 static void PlaceTreeAtSameHeight(TileIndex tile, int height)
00216 {
00217 for (uint i = 0; i < DEFAULT_TREE_STEPS; i++) {
00218 uint32 r = Random();
00219 int x = GB(r, 0, 5) - 16;
00220 int y = GB(r, 8, 5) - 16;
00221 TileIndex cur_tile = TileAddWrap(tile, x, y);
00222 if (cur_tile == INVALID_TILE) continue;
00223
00224
00225 if (abs(x) + abs(y) > 16) continue;
00226
00227
00228 if (!CanPlantTreesOnTile(cur_tile, true)) continue;
00229
00230
00231 if (Delta(GetTileZ(cur_tile), height) > 2) continue;
00232
00233
00234 PlaceTree(cur_tile, r);
00235 break;
00236 }
00237 }
00238
00244 void PlaceTreesRandomly()
00245 {
00246 int i, j, ht;
00247
00248 i = ScaleByMapSize(DEFAULT_TREE_STEPS);
00249 if (_game_mode == GM_EDITOR) i /= EDITOR_TREE_DIV;
00250 do {
00251 uint32 r = Random();
00252 TileIndex tile = RandomTileSeed(r);
00253
00254 IncreaseGeneratingWorldProgress(GWP_TREE);
00255
00256 if (CanPlantTreesOnTile(tile, true)) {
00257 PlaceTree(tile, r);
00258 if (_settings_game.game_creation.tree_placer != TP_IMPROVED) continue;
00259
00260
00261
00262
00263 ht = GetTileZ(tile);
00264
00265 j = GetTileZ(tile) * 2;
00266
00267 if (_settings_game.game_creation.landscape == LT_ARCTIC && ht > GetSnowLine()) j *= 3;
00268 while (j--) {
00269 PlaceTreeAtSameHeight(tile, ht);
00270 }
00271 }
00272 } while (--i);
00273
00274
00275 if (_settings_game.game_creation.landscape == LT_TROPIC) {
00276 i = ScaleByMapSize(DEFAULT_RAINFOREST_TREE_STEPS);
00277 if (_game_mode == GM_EDITOR) i /= EDITOR_TREE_DIV;
00278
00279 do {
00280 uint32 r = Random();
00281 TileIndex tile = RandomTileSeed(r);
00282
00283 IncreaseGeneratingWorldProgress(GWP_TREE);
00284
00285 if (GetTropicZone(tile) == TROPICZONE_RAINFOREST && CanPlantTreesOnTile(tile, false)) {
00286 PlaceTree(tile, r);
00287 }
00288 } while (--i);
00289 }
00290 }
00291
00298 void GenerateTrees()
00299 {
00300 uint i, total;
00301
00302 if (_settings_game.game_creation.tree_placer == TP_NONE) return;
00303
00304 switch (_settings_game.game_creation.tree_placer) {
00305 case TP_ORIGINAL: i = _settings_game.game_creation.landscape == LT_ARCTIC ? 15 : 6; break;
00306 case TP_IMPROVED: i = _settings_game.game_creation.landscape == LT_ARCTIC ? 4 : 2; break;
00307 default: NOT_REACHED();
00308 }
00309
00310 total = ScaleByMapSize(DEFAULT_TREE_STEPS);
00311 if (_settings_game.game_creation.landscape == LT_TROPIC) total += ScaleByMapSize(DEFAULT_RAINFOREST_TREE_STEPS);
00312 total *= i;
00313 uint num_groups = (_settings_game.game_creation.landscape != LT_TOYLAND) ? ScaleByMapSize(GB(Random(), 0, 5) + 25) : 0;
00314 total += num_groups * DEFAULT_TREE_STEPS;
00315 SetGeneratingWorldProgress(GWP_TREE, total);
00316
00317 if (num_groups != 0) PlaceTreeGroups(num_groups);
00318
00319 for (; i != 0; i--) {
00320 PlaceTreesRandomly();
00321 }
00322 }
00323
00333 CommandCost CmdPlantTree(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00334 {
00335 StringID msg = INVALID_STRING_ID;
00336 CommandCost cost(EXPENSES_OTHER);
00337 const byte tree_to_plant = GB(p1, 0, 8);
00338
00339 if (p2 >= MapSize()) return CMD_ERROR;
00340
00341 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;
00342
00343 TileArea ta(tile, p2);
00344 TILE_AREA_LOOP(tile, ta) {
00345 switch (GetTileType(tile)) {
00346 case MP_TREES:
00347
00348 if (_game_mode != GM_EDITOR && GetTreeCount(tile) == 4) {
00349 msg = STR_ERROR_TREE_ALREADY_HERE;
00350 continue;
00351 }
00352
00353 if (flags & DC_EXEC) {
00354 AddTreeCount(tile, 1);
00355 MarkTileDirtyByTile(tile);
00356 }
00357
00358 cost.AddCost(_price[PR_BUILD_TREES] * 2);
00359 break;
00360
00361 case MP_WATER:
00362 if (!IsCoast(tile) || IsSlopeWithOneCornerRaised(GetTileSlope(tile))) {
00363 msg = STR_ERROR_CAN_T_BUILD_ON_WATER;
00364 continue;
00365 }
00366
00367 case MP_CLEAR: {
00368 if (IsBridgeAbove(tile)) {
00369 msg = STR_ERROR_SITE_UNSUITABLE;
00370 continue;
00371 }
00372
00373 TreeType treetype = (TreeType)tree_to_plant;
00374
00375 if (_settings_game.game_creation.landscape == LT_TROPIC && treetype != TREE_INVALID && (
00376
00377 (treetype == TREE_CACTUS && GetTropicZone(tile) != TROPICZONE_DESERT) ||
00378
00379 (IsInsideMM(treetype, TREE_RAINFOREST, TREE_CACTUS) && GetTropicZone(tile) != TROPICZONE_RAINFOREST && _game_mode != GM_EDITOR) ||
00380
00381 (IsInsideMM(treetype, TREE_SUB_TROPICAL, TREE_TOYLAND) && GetTropicZone(tile) != TROPICZONE_NORMAL))) {
00382 msg = STR_ERROR_TREE_WRONG_TERRAIN_FOR_TREE_TYPE;
00383 continue;
00384 }
00385
00386 if (IsTileType(tile, MP_CLEAR)) {
00387
00388 switch (GetRawClearGround(tile)) {
00389 case CLEAR_FIELDS:
00390 case CLEAR_ROCKS: {
00391 CommandCost ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00392 if (ret.Failed()) return ret;
00393 cost.AddCost(ret);
00394 break;
00395 }
00396
00397 default: break;
00398 }
00399 }
00400
00401 if (_game_mode != GM_EDITOR && Company::IsValidID(_current_company)) {
00402 Town *t = ClosestTownFromTile(tile, _settings_game.economy.dist_local_authority);
00403 if (t != NULL) ChangeTownRating(t, RATING_TREE_UP_STEP, RATING_TREE_MAXIMUM, flags);
00404 }
00405
00406 if (flags & DC_EXEC) {
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 }
00421 cost.AddCost(_price[PR_BUILD_TREES]);
00422 break;
00423 }
00424
00425 default:
00426 msg = STR_ERROR_SITE_UNSUITABLE;
00427 break;
00428 }
00429 }
00430
00431 if (cost.GetCost() == 0) {
00432 return_cmd_error(msg);
00433 } else {
00434 return cost;
00435 }
00436 }
00437
00438 struct TreeListEnt : PalSpriteID {
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)] + SlopeToSpriteOffset(ti->tileh), PAL_NONE); break;
00449 }
00450
00451
00452 if (IsInvisibilitySet(TO_TREES)) return;
00453
00454 uint tmp = CountBits(ti->tile + ti->x + ti->y);
00455 uint index = GB(tmp, 0, 2) + (GetTreeType(ti->tile) << 2);
00456
00457
00458 if ((GetTreeGround(ti->tile) == TREE_GROUND_SNOW_DESERT || GetTreeGround(ti->tile) == TREE_GROUND_ROUGH_SNOW) &&
00459 GetTreeDensity(ti->tile) >= 2 &&
00460 IsInsideMM(index, TREE_SUB_ARCTIC << 2, TREE_RAINFOREST << 2)) {
00461 index += 164 - (TREE_SUB_ARCTIC << 2);
00462 }
00463
00464 assert(index < lengthof(_tree_layout_sprite));
00465
00466 const PalSpriteID *s = _tree_layout_sprite[index];
00467 const TreePos *d = _tree_layout_xy[GB(tmp, 2, 2)];
00468
00469
00470 StartSpriteCombine();
00471
00472 TreeListEnt te[4];
00473
00474
00475 uint trees = GetTreeCount(ti->tile);
00476
00477 for (uint i = 0; i < trees; i++) {
00478 SpriteID sprite = s[0].sprite + (i == trees - 1 ? GetTreeGrowth(ti->tile) : 3);
00479 PaletteID pal = s[0].pal;
00480
00481 te[i].sprite = sprite;
00482 te[i].pal = pal;
00483 te[i].x = d->x;
00484 te[i].y = d->y;
00485 s++;
00486 d++;
00487 }
00488
00489
00490 int z = ti->z + GetSlopeMaxPixelZ(ti->tileh) / 2;
00491
00492 for (; trees > 0; trees--) {
00493 uint min = te[0].x + te[0].y;
00494 uint mi = 0;
00495
00496 for (uint i = 1; i < trees; i++) {
00497 if ((uint)(te[i].x + te[i].y) < min) {
00498 min = te[i].x + te[i].y;
00499 mi = i;
00500 }
00501 }
00502
00503 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);
00504
00505
00506 te[mi] = te[trees - 1];
00507 }
00508
00509 EndSpriteCombine();
00510 }
00511
00512
00513 static int GetSlopePixelZ_Trees(TileIndex tile, uint x, uint y)
00514 {
00515 int z;
00516 Slope tileh = GetTilePixelSlope(tile, &z);
00517
00518 return z + GetPartialPixelZ(x & 0xF, y & 0xF, tileh);
00519 }
00520
00521 static Foundation GetFoundation_Trees(TileIndex tile, Slope tileh)
00522 {
00523 return FOUNDATION_NONE;
00524 }
00525
00526 static CommandCost ClearTile_Trees(TileIndex tile, DoCommandFlag flags)
00527 {
00528 uint num;
00529
00530 if (Company::IsValidID(_current_company)) {
00531 Town *t = ClosestTownFromTile(tile, _settings_game.economy.dist_local_authority);
00532 if (t != NULL) ChangeTownRating(t, RATING_TREE_DOWN_STEP, RATING_TREE_MINIMUM, flags);
00533 }
00534
00535 num = GetTreeCount(tile);
00536 if (IsInsideMM(GetTreeType(tile), TREE_RAINFOREST, TREE_CACTUS)) num *= 4;
00537
00538 if (flags & DC_EXEC) DoClearSquare(tile);
00539
00540 return CommandCost(EXPENSES_CONSTRUCTION, num * _price[PR_CLEAR_TREES]);
00541 }
00542
00543 static void GetTileDesc_Trees(TileIndex tile, TileDesc *td)
00544 {
00545 TreeType tt = GetTreeType(tile);
00546
00547 if (IsInsideMM(tt, TREE_RAINFOREST, TREE_CACTUS)) {
00548 td->str = STR_LAI_TREE_NAME_RAINFOREST;
00549 } else {
00550 td->str = tt == TREE_CACTUS ? STR_LAI_TREE_NAME_CACTUS_PLANTS : STR_LAI_TREE_NAME_TREES;
00551 }
00552
00553 td->owner[0] = GetTileOwner(tile);
00554 }
00555
00556 static void TileLoopTreesDesert(TileIndex tile)
00557 {
00558 switch (GetTropicZone(tile)) {
00559 case TROPICZONE_DESERT:
00560 if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT) {
00561 SetTreeGroundDensity(tile, TREE_GROUND_SNOW_DESERT, 3);
00562 MarkTileDirtyByTile(tile);
00563 }
00564 break;
00565
00566 case TROPICZONE_RAINFOREST: {
00567 static const SoundFx forest_sounds[] = {
00568 SND_42_LOON_BIRD,
00569 SND_43_LION,
00570 SND_44_MONKEYS,
00571 SND_48_DISTANT_BIRD
00572 };
00573 uint32 r = Random();
00574
00575 if (Chance16I(1, 200, r)) SndPlayTileFx(forest_sounds[GB(r, 16, 2)], tile);
00576 break;
00577 }
00578
00579 default: break;
00580 }
00581 }
00582
00583 static void TileLoopTreesAlps(TileIndex tile)
00584 {
00585 int k = GetTileZ(tile) - GetSnowLine() + 1;
00586
00587 if (k < 0) {
00588 switch (GetTreeGround(tile)) {
00589 case TREE_GROUND_SNOW_DESERT: SetTreeGroundDensity(tile, TREE_GROUND_GRASS, 3); break;
00590 case TREE_GROUND_ROUGH_SNOW: SetTreeGroundDensity(tile, TREE_GROUND_ROUGH, 3); break;
00591 default: return;
00592 }
00593 } else {
00594 uint density = min<uint>(k, 3);
00595
00596 if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT && GetTreeGround(tile) != TREE_GROUND_ROUGH_SNOW) {
00597 TreeGround tg = GetTreeGround(tile) == TREE_GROUND_ROUGH ? TREE_GROUND_ROUGH_SNOW : TREE_GROUND_SNOW_DESERT;
00598 SetTreeGroundDensity(tile, tg, density);
00599 } else if (GetTreeDensity(tile) != density) {
00600 SetTreeGroundDensity(tile, GetTreeGround(tile), density);
00601 } else {
00602 if (GetTreeDensity(tile) == 3) {
00603 uint32 r = Random();
00604 if (Chance16I(1, 200, r)) {
00605 SndPlayTileFx((r & 0x80000000) ? SND_39_HEAVY_WIND : SND_34_WIND, tile);
00606 }
00607 }
00608 return;
00609 }
00610 }
00611 MarkTileDirtyByTile(tile);
00612 }
00613
00614 static void TileLoop_Trees(TileIndex tile)
00615 {
00616 if (GetTreeGround(tile) == TREE_GROUND_SHORE) {
00617 TileLoop_Water(tile);
00618 } else {
00619 switch (_settings_game.game_creation.landscape) {
00620 case LT_TROPIC: TileLoopTreesDesert(tile); break;
00621 case LT_ARCTIC: TileLoopTreesAlps(tile); break;
00622 }
00623 }
00624
00625 AmbientSoundEffect(tile);
00626
00627 uint treeCounter = GetTreeCounter(tile);
00628
00629
00630 if ((treeCounter & 7) == 7 && GetTreeGround(tile) == TREE_GROUND_GRASS) {
00631 uint density = GetTreeDensity(tile);
00632 if (density < 3) {
00633 SetTreeGroundDensity(tile, TREE_GROUND_GRASS, density + 1);
00634 MarkTileDirtyByTile(tile);
00635 }
00636 }
00637 if (GetTreeCounter(tile) < 15) {
00638 AddTreeCounter(tile, 1);
00639 return;
00640 }
00641 SetTreeCounter(tile, 0);
00642
00643 switch (GetTreeGrowth(tile)) {
00644 case 3:
00645 if (_settings_game.game_creation.landscape == LT_TROPIC &&
00646 GetTreeType(tile) != TREE_CACTUS &&
00647 GetTropicZone(tile) == TROPICZONE_DESERT) {
00648 AddTreeGrowth(tile, 1);
00649 } else {
00650 switch (GB(Random(), 0, 3)) {
00651 case 0:
00652 AddTreeGrowth(tile, 1);
00653 break;
00654
00655 case 1:
00656 if (GetTreeCount(tile) < 4) {
00657 AddTreeCount(tile, 1);
00658 SetTreeGrowth(tile, 0);
00659 break;
00660 }
00661
00662
00663 case 2: {
00664
00665 if ((_settings_game.game_creation.landscape == LT_TROPIC && GetTropicZone(tile) == TROPICZONE_RAINFOREST) ?
00666 _settings_game.construction.extra_tree_placement == ETP_NONE :
00667 _settings_game.construction.extra_tree_placement != ETP_ALL) {
00668 break;
00669 }
00670
00671 TreeType treetype = GetTreeType(tile);
00672
00673 tile += TileOffsByDir((Direction)(Random() & 7));
00674
00675
00676 if (!CanPlantTreesOnTile(tile, false)) return;
00677
00678
00679 if (IsTileType(tile, MP_CLEAR) && GetClearGround(tile) == CLEAR_GRASS && GetClearDensity(tile) != 3) return;
00680
00681 PlantTreesOnTile(tile, treetype, 0, 0);
00682
00683 break;
00684 }
00685
00686 default:
00687 return;
00688 }
00689 }
00690 break;
00691
00692 case 6:
00693 if (GetTreeCount(tile) > 1) {
00694
00695 AddTreeCount(tile, -1);
00696 SetTreeGrowth(tile, 3);
00697 } else {
00698
00699 switch (GetTreeGround(tile)) {
00700 case TREE_GROUND_SHORE: MakeShore(tile); break;
00701 case TREE_GROUND_GRASS: MakeClear(tile, CLEAR_GRASS, GetTreeDensity(tile)); break;
00702 case TREE_GROUND_ROUGH: MakeClear(tile, CLEAR_ROUGH, 3); break;
00703 case TREE_GROUND_ROUGH_SNOW: {
00704 uint density = GetTreeDensity(tile);
00705 MakeClear(tile, CLEAR_ROUGH, 3);
00706 MakeSnow(tile, density);
00707 break;
00708 }
00709 default:
00710 if (_settings_game.game_creation.landscape == LT_TROPIC) {
00711 MakeClear(tile, CLEAR_DESERT, GetTreeDensity(tile));
00712 } else {
00713 uint density = GetTreeDensity(tile);
00714 MakeClear(tile, CLEAR_GRASS, 3);
00715 MakeSnow(tile, density);
00716 }
00717 break;
00718 }
00719 }
00720 break;
00721
00722 default:
00723 AddTreeGrowth(tile, 1);
00724 break;
00725 }
00726
00727 MarkTileDirtyByTile(tile);
00728 }
00729
00730 void OnTick_Trees()
00731 {
00732
00733 if (_settings_game.construction.extra_tree_placement == ETP_NONE) return;
00734
00735 uint32 r;
00736 TileIndex tile;
00737 TreeType tree;
00738
00739
00740 if (_settings_game.game_creation.landscape == LT_TROPIC &&
00741 (r = Random(), tile = RandomTileSeed(r), GetTropicZone(tile) == TROPICZONE_RAINFOREST) &&
00742 CanPlantTreesOnTile(tile, false) &&
00743 (tree = GetRandomTreeType(tile, GB(r, 24, 8))) != TREE_INVALID) {
00744 PlantTreesOnTile(tile, tree, 0, 0);
00745 }
00746
00747
00748 if (--_trees_tick_ctr != 0 || _settings_game.construction.extra_tree_placement != ETP_ALL) return;
00749
00750
00751 r = Random();
00752 tile = RandomTileSeed(r);
00753 if (CanPlantTreesOnTile(tile, false) && (tree = GetRandomTreeType(tile, GB(r, 24, 8))) != TREE_INVALID) {
00754 PlantTreesOnTile(tile, tree, 0, 0);
00755 }
00756 }
00757
00758 static TrackStatus GetTileTrackStatus_Trees(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
00759 {
00760 return 0;
00761 }
00762
00763 static void ChangeTileOwner_Trees(TileIndex tile, Owner old_owner, Owner new_owner)
00764 {
00765
00766 }
00767
00768 void InitializeTrees()
00769 {
00770 _trees_tick_ctr = 0;
00771 }
00772
00773 static CommandCost TerraformTile_Trees(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
00774 {
00775 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00776 }
00777
00778
00779 extern const TileTypeProcs _tile_type_trees_procs = {
00780 DrawTile_Trees,
00781 GetSlopePixelZ_Trees,
00782 ClearTile_Trees,
00783 NULL,
00784 GetTileDesc_Trees,
00785 GetTileTrackStatus_Trees,
00786 NULL,
00787 NULL,
00788 TileLoop_Trees,
00789 ChangeTileOwner_Trees,
00790 NULL,
00791 NULL,
00792 GetFoundation_Trees,
00793 TerraformTile_Trees,
00794 };