tron@2186: /* $Id$ */
tron@2186: 
belugas@6422: /** @file tree_cmd.cpp */
belugas@6422: 
truelight@0: #include "stdafx.h"
Darkvater@1891: #include "openttd.h"
celestar@5385: #include "bridge_map.h"
tron@3144: #include "clear_map.h"
tron@507: #include "table/strings.h"
celestar@2148: #include "table/sprites.h"
Darkvater@1784: #include "table/tree_land.h"
tron@2163: #include "functions.h"
tron@679: #include "map.h"
maedhros@6343: #include "landscape.h"
tron@1209: #include "tile.h"
tron@3144: #include "tree_map.h"
truelight@0: #include "viewport.h"
truelight@0: #include "command.h"
truelight@0: #include "town.h"
tron@337: #include "sound.h"
tron@2153: #include "variables.h"
truelight@4300: #include "genworld.h"
truelight@4300: 
truelight@4300: enum TreePlacer {
truelight@4300: 	TP_NONE,
truelight@4300: 	TP_ORIGINAL,
truelight@4300: 	TP_IMPROVED,
truelight@4300: };
truelight@0: 
tron@2981: static TreeType GetRandomTreeType(TileIndex tile, uint seed)
truelight@0: {
tron@1286: 	switch (_opt.landscape) {
belugas@6357: 		case LT_TEMPERATE:
rubidium@5587: 			return (TreeType)(seed * TREE_COUNT_TEMPERATE / 256 + TREE_TEMPERATE);
truelight@0: 
belugas@6357: 		case LT_ARCTIC:
rubidium@5587: 			return (TreeType)(seed * TREE_COUNT_SUB_ARCTIC / 256 + TREE_SUB_ARCTIC);
tron@1286: 
belugas@6357: 		case LT_TROPIC:
belugas@3379: 			switch (GetTropicZone(tile)) {
rubidium@5587: 				case TROPICZONE_INVALID: return (TreeType)(seed * TREE_COUNT_SUB_TROPICAL / 256 + TREE_SUB_TROPICAL);
rubidium@5587: 				case TROPICZONE_DESERT:  return (TreeType)((seed > 12) ? TREE_INVALID : TREE_CACTUS);
rubidium@5587: 				default:                 return (TreeType)(seed * TREE_COUNT_RAINFOREST / 256 + TREE_RAINFOREST);
tron@1286: 			}
tron@1286: 
tron@1286: 		default:
rubidium@5587: 			return (TreeType)(seed * TREE_COUNT_TOYLAND / 256 + TREE_TOYLAND);
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@2958: static void PlaceTree(TileIndex tile, uint32 r)
truelight@0: {
tron@2981: 	TreeType tree = GetRandomTreeType(tile, GB(r, 24, 8));
tron@2088: 
tron@3441: 	if (tree != TREE_INVALID) {
tron@3441: 		MakeTree(tile, tree, GB(r, 22, 2), min(GB(r, 16, 3), 6), TREE_GROUND_GRASS, 0);
truelight@0: 
belugas@6422: 		/* above snowline? */
belugas@6357: 		if (_opt.landscape == LT_ARCTIC && GetTileZ(tile) > GetSnowLine()) {
tron@3441: 			SetTreeGroundDensity(tile, TREE_GROUND_SNOW_DESERT, 3);
rubidium@5587: 			SetTreeCounter(tile, (TreeGround)GB(r, 24, 3));
tron@2088: 		} else {
rubidium@5587: 			SetTreeGroundDensity(tile, (TreeGround)GB(r, 28, 1), 0);
rubidium@5587: 			SetTreeCounter(tile, (TreeGround)GB(r, 24, 4));
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1977: static void DoPlaceMoreTrees(TileIndex tile)
truelight@0: {
tron@2088: 	uint i;
truelight@0: 
tron@2088: 	for (i = 0; i < 1000; i++) {
truelight@0: 		uint32 r = Random();
tron@2088: 		int x = GB(r, 0, 5) - 16;
tron@2088: 		int y = GB(r, 8, 5) - 16;
tron@2088: 		uint dist = myabs(x) + myabs(y);
tron@2088: 		TileIndex cur_tile = TILE_MASK(tile + TileDiffXY(x, y));
truelight@0: 
tron@2955: 		if (dist <= 13 &&
tron@2955: 				IsTileType(cur_tile, MP_CLEAR) &&
celestar@5385: 				!IsBridgeAbove(cur_tile) &&
tron@3447: 				!IsClearGround(cur_tile, CLEAR_FIELDS) &&
tron@3447: 				!IsClearGround(cur_tile, CLEAR_ROCKS)) {
tron@2958: 			PlaceTree(cur_tile, r);
truelight@0: 		}
tron@2088: 	}
truelight@0: }
truelight@0: 
rubidium@6247: static void PlaceMoreTrees()
truelight@0: {
tron@2243: 	uint i = ScaleByMapSize(GB(Random(), 0, 5) + 25);
truelight@0: 	do {
ludde@2051: 		DoPlaceMoreTrees(RandomTile());
truelight@0: 	} while (--i);
truelight@0: }
truelight@0: 
truelight@4300: /**
truelight@4300:  * Place a tree at the same height as an existing tree.
truelight@4300:  *  This gives cool effects to the map.
truelight@4300:  */
truelight@4300: void PlaceTreeAtSameHeight(TileIndex tile, uint height)
truelight@4300: {
truelight@4300: 	uint i;
truelight@4300: 
truelight@4300: 	for (i = 0; i < 1000; i++) {
truelight@4300: 		uint32 r = Random();
truelight@4300: 		int x = GB(r, 0, 5) - 16;
truelight@4300: 		int y = GB(r, 8, 5) - 16;
truelight@4300: 		TileIndex cur_tile = TILE_MASK(tile + TileDiffXY(x, y));
truelight@4300: 
truelight@4300: 		/* Keep in range of the existing tree */
truelight@4300: 		if (myabs(x) + myabs(y) > 16) continue;
truelight@4300: 
truelight@4300: 		/* Clear tile, no farm-tiles or rocks */
truelight@4300: 		if (!IsTileType(cur_tile, MP_CLEAR) ||
truelight@4300: 				IsClearGround(cur_tile, CLEAR_FIELDS) ||
truelight@4300: 				IsClearGround(cur_tile, CLEAR_ROCKS))
truelight@4300: 			continue;
truelight@4300: 
truelight@4300: 		/* Not too much height difference */
rubidium@5587: 		if (delta(GetTileZ(cur_tile), height) > 2) continue;
truelight@4300: 
truelight@4300: 		/* Place one tree and quit */
truelight@4300: 		PlaceTree(cur_tile, r);
truelight@4300: 		break;
truelight@4300: 	}
truelight@4300: }
truelight@4300: 
rubidium@6247: void PlaceTreesRandomly()
truelight@0: {
truelight@4300: 	uint i, j, ht;
truelight@0: 
tron@1202: 	i = ScaleByMapSize(1000);
truelight@0: 	do {
tron@2088: 		uint32 r = Random();
tron@2088: 		TileIndex tile = RandomTileSeed(r);
truelight@4300: 
truelight@4300: 		IncreaseGeneratingWorldProgress(GWP_TREE);
truelight@4300: 
tron@2955: 		if (IsTileType(tile, MP_CLEAR) &&
celestar@5385: 				!IsBridgeAbove(tile) &&
tron@3447: 				!IsClearGround(tile, CLEAR_FIELDS) &&
tron@3447: 				!IsClearGround(tile, CLEAR_ROCKS)) {
tron@2958: 			PlaceTree(tile, r);
truelight@4300: 			if (_patches.tree_placer != TP_IMPROVED) continue;
truelight@4300: 
truelight@4300: 			/* Place a number of trees based on the tile height.
truelight@4300: 			 *  This gives a cool effect of multiple trees close together.
truelight@4300: 			 *  It is almost real life ;) */
truelight@4300: 			ht = GetTileZ(tile);
truelight@4300: 			/* The higher we get, the more trees we plant */
truelight@4300: 			j = GetTileZ(tile) / TILE_HEIGHT * 2;
truelight@4300: 			while (j--) {
truelight@4300: 				/* Above snowline more trees! */
belugas@6357: 				if (_opt.landscape == LT_ARCTIC && ht > GetSnowLine()) {
truelight@4300: 					PlaceTreeAtSameHeight(tile, ht);
truelight@4300: 					PlaceTreeAtSameHeight(tile, ht);
truelight@4300: 				};
truelight@4300: 
truelight@4300: 				PlaceTreeAtSameHeight(tile, ht);
truelight@4300: 			}
truelight@0: 		}
truelight@0: 	} while (--i);
truelight@0: 
truelight@0: 	/* place extra trees at rainforest area */
belugas@6357: 	if (_opt.landscape == LT_TROPIC) {
tron@1202: 		i = ScaleByMapSize(15000);
truelight@0: 
truelight@0: 		do {
tron@2088: 			uint32 r = Random();
tron@2088: 			TileIndex tile = RandomTileSeed(r);
truelight@4300: 
truelight@4300: 			IncreaseGeneratingWorldProgress(GWP_TREE);
truelight@4300: 
celestar@5385: 			if (IsTileType(tile, MP_CLEAR) &&
celestar@5385: 					!IsBridgeAbove(tile) &&
celestar@5385: 					!IsClearGround(tile, CLEAR_FIELDS) &&
celestar@5385: 					GetTropicZone(tile) == TROPICZONE_RAINFOREST) {
tron@2958: 				PlaceTree(tile, r);
truelight@0: 			}
truelight@0: 		} while (--i);
truelight@0: 	}
truelight@0: }
truelight@0: 
rubidium@6247: void GenerateTrees()
truelight@0: {
truelight@4300: 	uint i, total;
truelight@4300: 
truelight@4300: 	if (_patches.tree_placer == TP_NONE) return;
truelight@0: 
belugas@6357: 	if (_opt.landscape != LT_TOYLAND) PlaceMoreTrees();
tron@2088: 
truelight@4300: 	switch (_patches.tree_placer) {
belugas@6357: 		case TP_ORIGINAL: i = _opt.landscape == LT_ARCTIC ? 15 : 6; break;
belugas@6357: 		case TP_IMPROVED: i = _opt.landscape == LT_ARCTIC ?  4 : 2; break;
truelight@4300: 		default: NOT_REACHED(); return;
truelight@4300: 	}
truelight@4300: 
truelight@4300: 	total = ScaleByMapSize(1000);
belugas@6357: 	if (_opt.landscape == LT_TROPIC) total += ScaleByMapSize(15000);
truelight@4300: 	total *= i;
truelight@4300: 	SetGeneratingWorldProgress(GWP_TREE, total);
truelight@4300: 
truelight@4300: 	for (; i != 0; i--) {
tron@2088: 		PlaceTreesRandomly();
truelight@0: 	}
truelight@0: }
truelight@0: 
Darkvater@1784: /** Plant a tree.
tron@3491:  * @param tile start tile of area-drag of tree plantation
belugas@6422:  * @param flags type of operation
Darkvater@1784:  * @param p1 tree type, -1 means random.
Darkvater@1784:  * @param p2 end tile of area-drag
truelight@0:  */
rubidium@6943: CommandCost CmdPlantTree(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
tron@3183: 	StringID msg = INVALID_STRING_ID;
rubidium@6943: 	CommandCost cost;
tron@3491: 	int ex;
tron@3491: 	int ey;
Darkvater@2118: 	int sx, sy, x, y;
tron@1286: 
Darkvater@2892: 	if (p2 >= MapSize()) return CMD_ERROR;
Darkvater@1784: 	/* Check the tree type. It can be random or some valid value within the current climate */
Darkvater@1784: 	if (p1 != (uint)-1 && p1 - _tree_base_by_landscape[_opt.landscape] >= _tree_count_by_landscape[_opt.landscape]) return CMD_ERROR;
truelight@193: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_OTHER);
truelight@0: 
truelight@0: 	// make sure sx,sy are smaller than ex,ey
tron@3491: 	ex = TileX(tile);
tron@3491: 	ey = TileY(tile);
Darkvater@2118: 	sx = TileX(p2);
Darkvater@2118: 	sy = TileY(p2);
tron@6106: 	if (ex < sx) Swap(ex, sx);
tron@6106: 	if (ey < sy) Swap(ey, sy);
truelight@193: 
Darkvater@2118: 	for (x = sx; x <= ex; x++) {
Darkvater@2118: 		for (y = sy; y <= ey; y++) {
tron@2088: 			TileIndex tile = TileXY(x, y);
tron@1286: 
tron@2088: 			switch (GetTileType(tile)) {
tron@1286: 				case MP_TREES:
belugas@6422: 					/* no more space for trees? */
tron@3003: 					if (_game_mode != GM_EDITOR && GetTreeCount(tile) == 3) {
tron@3183: 						msg = STR_2803_TREE_ALREADY_HERE;
tron@1286: 						continue;
truelight@0: 					}
truelight@0: 
tron@1286: 					if (flags & DC_EXEC) {
tron@2981: 						AddTreeCount(tile, 1);
tron@2088: 						MarkTileDirtyByTile(tile);
tron@1286: 					}
belugas@6422: 					/* 2x as expensive to add more trees to an existing tile */
rubidium@6950: 					cost.AddCost(_price.build_trees * 2);
tron@1286: 					break;
tron@1286: 
rubidium@7509: 				case MP_WATER:
rubidium@7509: 					msg = STR_3807_CAN_T_BUILD_ON_WATER;
rubidium@7509: 					continue;
rubidium@7509: 					break;
rubidium@7509: 
tron@1286: 				case MP_CLEAR:
celestar@5385: 					if (!IsTileOwner(tile, OWNER_NONE) ||
celestar@5385: 							IsBridgeAbove(tile)) {
tron@3183: 						msg = STR_2804_SITE_UNSUITABLE;
tron@1286: 						continue;
truelight@0: 					}
truelight@193: 
tron@2955: 					switch (GetClearGround(tile)) {
rubidium@6950: 						case CLEAR_FIELDS: cost.AddCost(_price.clear_3); break;
rubidium@6950: 						case CLEAR_ROCKS:  cost.AddCost(_price.clear_2); break;
tron@2955: 						default: break;
tron@2955: 					}
truelight@0: 
tron@1286: 					if (flags & DC_EXEC) {
tron@2981: 						TreeType treetype;
tron@3079: 						uint growth;
tron@1286: 
Darkvater@4850: 						if (_game_mode != GM_EDITOR && IsValidPlayer(_current_player)) {
tron@2088: 							Town *t = ClosestTownFromTile(tile, _patches.dist_local_authority);
tron@1286: 							if (t != NULL)
tron@1286: 								ChangeTownRating(t, RATING_TREE_UP_STEP, RATING_TREE_MAXIMUM);
tron@1286: 						}
tron@1286: 
rubidium@5587: 						treetype = (TreeType)p1;
tron@3441: 						if (treetype == TREE_INVALID) {
tron@2981: 							treetype = GetRandomTreeType(tile, GB(Random(), 24, 8));
tron@3441: 							if (treetype == TREE_INVALID) treetype = TREE_CACTUS;
tron@1286: 						}
tron@1286: 
tron@3079: 						growth = _game_mode == GM_EDITOR ? 3 : 0;
tron@2981: 						switch (GetClearGround(tile)) {
tron@3447: 							case CLEAR_ROUGH: MakeTree(tile, treetype, 0, growth, TREE_GROUND_ROUGH, 0); break;
tron@3447: 							case CLEAR_SNOW:  MakeTree(tile, treetype, 0, growth, TREE_GROUND_SNOW_DESERT, GetClearDensity(tile)); break;
tron@3447: 							default:          MakeTree(tile, treetype, 0, growth, TREE_GROUND_GRASS, 0); break;
tron@1286: 						}
tron@3003: 						MarkTileDirtyByTile(tile);
tron@1286: 
tron@3441: 						if (_game_mode == GM_EDITOR && IS_INT_INSIDE(treetype, TREE_RAINFOREST, TREE_CACTUS))
belugas@3379: 							SetTropicZone(tile, TROPICZONE_RAINFOREST);
truelight@0: 					}
rubidium@6950: 					cost.AddCost(_price.build_trees);
tron@1286: 					break;
tron@1286: 
tron@1286: 				default:
tron@3183: 					msg = STR_2804_SITE_UNSUITABLE;
tron@1286: 					break;
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@193: 
rubidium@6950: 	if (cost.GetCost() == 0) {
tron@3183: 		return_cmd_error(msg);
tron@3183: 	} else {
tron@3183: 		return cost;
tron@3183: 	}
truelight@0: }
truelight@0: 
rubidium@6248: struct TreeListEnt {
peter1138@5668: 	SpriteID image;
peter1138@5668: 	SpriteID pal;
rubidium@6491: 	byte x, y;
rubidium@6248: };
truelight@0: 
truelight@0: static void DrawTile_Trees(TileInfo *ti)
truelight@0: {
peter1138@5668: 	const PalSpriteID *s;
tron@2654: 	const TreePos* d;
truelight@0: 	byte z;
truelight@0: 
tron@2981: 	switch (GetTreeGround(ti->tile)) {
tron@3441: 		case TREE_GROUND_GRASS: DrawClearLandTile(ti, 3); break;
tron@3441: 		case TREE_GROUND_ROUGH: DrawHillyLandTile(ti); break;
peter1138@5668: 		default: DrawGroundSprite(_tree_sprites_1[GetTreeDensity(ti->tile)] + _tileh_to_sprite[ti->tileh], PAL_NONE); break;
truelight@0: 	}
truelight@0: 
tron@2220: 	DrawClearLandFence(ti);
truelight@0: 
truelight@0: 	z = ti->z;
tron@3636: 	if (ti->tileh != SLOPE_FLAT) {
truelight@0: 		z += 4;
tron@3636: 		if (IsSteepSlope(ti->tileh)) z += 4;
truelight@0: 	}
truelight@0: 
truelight@0: 	{
truelight@0: 		uint16 tmp = ti->x;
tron@959: 		uint index;
truelight@0: 
tron@2088: 		tmp = ROR(tmp, 2);
truelight@0: 		tmp -= ti->y;
tron@2088: 		tmp = ROR(tmp, 3);
truelight@0: 		tmp -= ti->x;
tron@2088: 		tmp = ROR(tmp, 1);
truelight@0: 		tmp += ti->y;
truelight@0: 
tron@2088: 		d = _tree_layout_xy[GB(tmp, 4, 2)];
truelight@0: 
tron@2981: 		index = GB(tmp, 6, 2) + (GetTreeType(ti->tile) << 2);
truelight@193: 
truelight@0: 		/* different tree styles above one of the grounds */
tron@3441: 		if (GetTreeGround(ti->tile) == TREE_GROUND_SNOW_DESERT &&
tron@2981: 				GetTreeDensity(ti->tile) >= 2 &&
tron@3441: 				IS_INT_INSIDE(index, TREE_SUB_ARCTIC << 2, TREE_RAINFOREST << 2)) {
tron@3441: 			index += 164 - (TREE_SUB_ARCTIC << 2);
tron@2981: 		}
truelight@193: 
truelight@193: 		assert(index < lengthof(_tree_layout_sprite));
truelight@0: 		s = _tree_layout_sprite[index];
truelight@0: 	}
truelight@0: 
truelight@0: 	StartSpriteCombine();
truelight@0: 
peter1138@6427: 	if (!HASBIT(_transparent_opt, TO_TREES) || !_patches.invisible_trees) {
tron@2088: 		TreeListEnt te[4];
tron@2088: 		uint i;
truelight@0: 
truelight@0: 		/* put the trees to draw in a list */
tron@3271: 		i = GetTreeCount(ti->tile) + 1;
truelight@0: 		do {
peter1138@5668: 			SpriteID image = s[0].sprite + (--i == 0 ? GetTreeGrowth(ti->tile) : 3);
rubidium@7333: 			SpriteID pal = s[0].pal;
rubidium@7333: 
truelight@0: 			te[i].image = image;
peter1138@5668: 			te[i].pal   = pal;
tron@2654: 			te[i].x = d->x;
tron@2654: 			te[i].y = d->y;
truelight@0: 			s++;
tron@2654: 			d++;
truelight@0: 		} while (i);
truelight@0: 
truelight@0: 		/* draw them in a sorted way */
tron@2952: 		for (;;) {
truelight@0: 			byte min = 0xFF;
truelight@0: 			TreeListEnt *tep = NULL;
truelight@0: 
tron@3271: 			i = GetTreeCount(ti->tile) + 1;
truelight@0: 			do {
tron@2644: 				if (te[--i].image != 0 && te[i].x + te[i].y < min) {
truelight@0: 					min = te[i].x + te[i].y;
truelight@0: 					tep = &te[i];
truelight@0: 				}
truelight@0: 			} while (i);
truelight@0: 
tron@2088: 			if (tep == NULL) break;
truelight@0: 
rubidium@7333: 			AddSortableSpriteToDraw(tep->image, tep->pal, ti->x + tep->x, ti->y + tep->y, 5, 5, 0x10, z, HASBIT(_transparent_opt, TO_TREES));
truelight@0: 			tep->image = 0;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	EndSpriteCombine();
truelight@0: }
truelight@0: 
truelight@0: 
tron@4231: static uint GetSlopeZ_Trees(TileIndex tile, uint x, uint y)
tron@2537: {
tron@4231: 	uint z;
rubidium@5587: 	Slope tileh = GetTileSlope(tile, &z);
tron@4231: 
tron@4231: 	return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
truelight@0: }
truelight@0: 
rubidium@7335: static Foundation GetFoundation_Trees(TileIndex tile, Slope tileh)
tron@2548: {
rubidium@7335: 	return FOUNDATION_NONE;
dominik@39: }
dominik@39: 
rubidium@6943: static CommandCost ClearTile_Trees(TileIndex tile, byte flags)
tron@1977: {
tron@2243: 	uint num;
truelight@0: 
Darkvater@4850: 	if ((flags & DC_EXEC) && IsValidPlayer(_current_player)) {
truelight@0: 		Town *t = ClosestTownFromTile(tile, _patches.dist_local_authority);
truelight@193: 		if (t != NULL)
celestar@1005: 			ChangeTownRating(t, RATING_TREE_DOWN_STEP, RATING_TREE_MINIMUM);
truelight@0: 	}
truelight@0: 
tron@2981: 	num = GetTreeCount(tile) + 1;
tron@3441: 	if (IS_INT_INSIDE(GetTreeType(tile), TREE_RAINFOREST, TREE_CACTUS)) num *= 4;
truelight@0: 
tron@2243: 	if (flags & DC_EXEC) DoClearSquare(tile);
truelight@0: 
rubidium@6950: 	return CommandCost(num * _price.remove_trees);
truelight@0: }
truelight@0: 
tron@1977: static void GetAcceptedCargo_Trees(TileIndex tile, AcceptedCargo ac)
truelight@0: {
truelight@0: 	/* not used */
truelight@0: }
truelight@0: 
tron@1977: static void GetTileDesc_Trees(TileIndex tile, TileDesc *td)
truelight@0: {
tron@2981: 	TreeType tt = GetTreeType(tile);
tron@2981: 
tron@3441: 	if (IS_INT_INSIDE(tt, TREE_RAINFOREST, TREE_CACTUS)) {
tron@2981: 		td->str = STR_280F_RAINFOREST;
tron@3441: 	} else if (tt == TREE_CACTUS) {
tron@2981: 		td->str = STR_2810_CACTUS_PLANTS;
tron@2981: 	} else {
tron@2981: 		td->str = STR_280E_TREES;
tron@2981: 	}
truelight@0: 
tron@1901: 	td->owner = GetTileOwner(tile);
truelight@0: }
truelight@0: 
tron@1977: static void AnimateTile_Trees(TileIndex tile)
truelight@0: {
truelight@0: 	/* not used */
truelight@0: }
truelight@0: 
tron@1977: static void TileLoopTreesDesert(TileIndex tile)
truelight@0: {
belugas@3379: 	switch (GetTropicZone(tile)) {
belugas@3379: 		case TROPICZONE_DESERT:
tron@3441: 			if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT) {
tron@3441: 				SetTreeGroundDensity(tile, TREE_GROUND_SNOW_DESERT, 3);
tron@2981: 				MarkTileDirtyByTile(tile);
tron@2981: 			}
tron@2981: 			break;
tron@2243: 
belugas@3379: 		case TROPICZONE_RAINFOREST: {
tron@2981: 			static const SoundFx forest_sounds[] = {
tron@2981: 				SND_42_LOON_BIRD,
tron@2981: 				SND_43_LION,
tron@2981: 				SND_44_MONKEYS,
tron@2981: 				SND_48_DISTANT_BIRD
tron@2981: 			};
tron@2981: 			uint32 r = Random();
truelight@0: 
tron@2981: 			if (CHANCE16I(1, 200, r)) SndPlayTileFx(forest_sounds[GB(r, 16, 2)], tile);
tron@2981: 			break;
truelight@0: 		}
belugas@3379: 
belugas@3379: 		default: break;
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1977: static void TileLoopTreesAlps(TileIndex tile)
truelight@0: {
maedhros@6343: 	int k = GetTileZ(tile) - GetSnowLine() + TILE_HEIGHT;
truelight@0: 
tron@4157: 	if (k < 0) {
tron@3441: 		if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT) return;
tron@3441: 		SetTreeGroundDensity(tile, TREE_GROUND_GRASS, 0);
truelight@0: 	} else {
tron@4157: 		uint density = min((uint)k / TILE_HEIGHT, 3);
tron@2981: 
tron@3441: 		if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT ||
tron@3441: 				GetTreeDensity(tile) != density) {
tron@3441: 			SetTreeGroundDensity(tile, TREE_GROUND_SNOW_DESERT, density);
tron@2981: 		} else {
tron@2981: 			if (GetTreeDensity(tile) == 3) {
tron@2981: 				uint32 r = Random();
tron@2981: 				if (CHANCE16I(1, 200, r)) {
tron@2981: 					SndPlayTileFx((r & 0x80000000) ? SND_39_HEAVY_WIND : SND_34_WIND, tile);
tron@2981: 				}
truelight@0: 			}
truelight@0: 			return;
truelight@0: 		}
truelight@0: 	}
truelight@0: 	MarkTileDirtyByTile(tile);
truelight@0: }
truelight@0: 
tron@1977: static void TileLoop_Trees(TileIndex tile)
truelight@0: {
tron@2981: 	switch (_opt.landscape) {
belugas@6357: 		case LT_TROPIC: TileLoopTreesDesert(tile); break;
belugas@6357: 		case LT_ARCTIC: TileLoopTreesAlps(tile);   break;
truelight@0: 	}
truelight@0: 
truelight@0: 	TileLoopClearHelper(tile);
truelight@0: 
tron@2981: 	if (GetTreeCounter(tile) < 15) {
tron@2981: 		AddTreeCounter(tile, 1);
tron@2981: 		return;
tron@2981: 	}
tron@2981: 	SetTreeCounter(tile, 0);
truelight@193: 
tron@2981: 	switch (GetTreeGrowth(tile)) {
tron@2981: 		case 3: /* regular sized tree */
belugas@6357: 			if (_opt.landscape == LT_TROPIC &&
tron@3441: 					GetTreeType(tile) != TREE_CACTUS &&
belugas@3379: 					GetTropicZone(tile) == TROPICZONE_DESERT) {
tron@2981: 				AddTreeGrowth(tile, 1);
tron@2981: 			} else {
tron@2981: 				switch (GB(Random(), 0, 3)) {
tron@2981: 					case 0: /* start destructing */
tron@2981: 						AddTreeGrowth(tile, 1);
tron@2955: 						break;
tron@2955: 
tron@2981: 					case 1: /* add a tree */
tron@2981: 						if (GetTreeCount(tile) < 3) {
tron@2981: 							AddTreeCount(tile, 1);
tron@2981: 							SetTreeGrowth(tile, 0);
tron@2981: 							break;
tron@2981: 						}
tron@2981: 						/* FALL THROUGH */
truelight@0: 
tron@2981: 					case 2: { /* add a neighbouring tree */
tron@2981: 						TreeType treetype = GetTreeType(tile);
truelight@0: 
rubidium@7317: 						tile += TileOffsByDir((Direction)(Random() & 7));
truelight@0: 
celestar@5385: 						if (!IsTileType(tile, MP_CLEAR) || IsBridgeAbove(tile)) return;
tron@2981: 
tron@2981: 						switch (GetClearGround(tile)) {
tron@3447: 							case CLEAR_GRASS:
tron@2981: 								if (GetClearDensity(tile) != 3) return;
tron@3441: 								MakeTree(tile, treetype, 0, 0, TREE_GROUND_GRASS, 0);
tron@2981: 								break;
tron@2981: 
tron@3447: 							case CLEAR_ROUGH: MakeTree(tile, treetype, 0, 0, TREE_GROUND_ROUGH, 0); break;
tron@3447: 							case CLEAR_SNOW:  MakeTree(tile, treetype, 0, 0, TREE_GROUND_SNOW_DESERT, GetClearDensity(tile)); break;
tron@2981: 							default: return;
tron@2981: 						}
tron@2981: 						break;
tron@2981: 					}
tron@2981: 
tron@2981: 					default:
tron@2981: 						return;
tron@2981: 				}
truelight@0: 			}
tron@2981: 			break;
tron@2981: 
tron@2981: 		case 6: /* final stage of tree destruction */
tron@2981: 			if (GetTreeCount(tile) > 0) {
tron@2981: 				/* more than one tree, delete it */
tron@2981: 				AddTreeCount(tile, -1);
tron@2981: 				SetTreeGrowth(tile, 3);
tron@2981: 			} else {
tron@2981: 				/* just one tree, change type into MP_CLEAR */
tron@2981: 				switch (GetTreeGround(tile)) {
tron@3447: 					case TREE_GROUND_GRASS: MakeClear(tile, CLEAR_GRASS, 3); break;
tron@3447: 					case TREE_GROUND_ROUGH: MakeClear(tile, CLEAR_ROUGH, 3); break;
tron@3447: 					default: MakeClear(tile, CLEAR_SNOW, GetTreeDensity(tile)); break;
tron@2981: 				}
truelight@0: 			}
tron@2981: 			break;
tron@2981: 
tron@2981: 		default:
tron@2981: 			AddTreeGrowth(tile, 1);
tron@2981: 			break;
truelight@0: 	}
truelight@0: 
truelight@0: 	MarkTileDirtyByTile(tile);
truelight@0: }
truelight@0: 
rubidium@6247: void OnTick_Trees()
truelight@0: {
truelight@0: 	uint32 r;
tron@1977: 	TileIndex tile;
tron@2955: 	ClearGround ct;
tron@3017: 	TreeType tree;
truelight@0: 
truelight@0: 	/* place a tree at a random rainforest spot */
belugas@6357: 	if (_opt.landscape == LT_TROPIC &&
belugas@3379: 			(r = Random(), tile = RandomTileSeed(r), GetTropicZone(tile) == TROPICZONE_RAINFOREST) &&
tron@1035: 			IsTileType(tile, MP_CLEAR) &&
celestar@5385: 			!IsBridgeAbove(tile) &&
tron@3447: 			(ct = GetClearGround(tile), ct == CLEAR_GRASS || ct == CLEAR_ROUGH) &&
tron@3441: 			(tree = GetRandomTreeType(tile, GB(r, 24, 8))) != TREE_INVALID) {
tron@3447: 		MakeTree(tile, tree, 0, 0, ct == CLEAR_ROUGH ? TREE_GROUND_ROUGH : TREE_GROUND_GRASS, 0);
truelight@0: 	}
truelight@0: 
belugas@6422: 	/* byte underflow */
tron@2088: 	if (--_trees_tick_ctr != 0) return;
truelight@193: 
truelight@0: 	/* place a tree at a random spot */
truelight@0: 	r = Random();
truelight@0: 	tile = TILE_MASK(r);
tron@1035: 	if (IsTileType(tile, MP_CLEAR) &&
celestar@5385: 			!IsBridgeAbove(tile) &&
tron@3447: 			(ct = GetClearGround(tile), ct == CLEAR_GRASS || ct == CLEAR_ROUGH || ct == CLEAR_SNOW) &&
tron@3441: 			(tree = GetRandomTreeType(tile, GB(r, 24, 8))) != TREE_INVALID) {
tron@2955: 		switch (ct) {
tron@3447: 			case CLEAR_GRASS: MakeTree(tile, tree, 0, 0, TREE_GROUND_GRASS, 0); break;
tron@3447: 			case CLEAR_ROUGH: MakeTree(tile, tree, 0, 0, TREE_GROUND_ROUGH, 0); break;
tron@3441: 			default: MakeTree(tile, tree, 0, 0, TREE_GROUND_SNOW_DESERT, GetClearDensity(tile)); break;
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1977: static void ClickTile_Trees(TileIndex tile)
truelight@0: {
truelight@0: 	/* not used */
truelight@0: }
truelight@0: 
rubidium@6683: static uint32 GetTileTrackStatus_Trees(TileIndex tile, TransportType mode, uint sub_mode)
truelight@0: {
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
Darkvater@2436: static void ChangeTileOwner_Trees(TileIndex tile, PlayerID old_player, PlayerID new_player)
truelight@0: {
truelight@0: 	/* not used */
truelight@0: }
truelight@0: 
rubidium@6247: void InitializeTrees()
truelight@0: {
truelight@0: 	_trees_tick_ctr = 0;
truelight@0: }
truelight@0: 
rubidium@7494: static CommandCost TerraformTile_Trees(TileIndex tile, uint32 flags, uint z_new, Slope tileh_new)
rubidium@7494: {
rubidium@7494: 	return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
rubidium@7494: }
rubidium@7494: 
truelight@0: 
rubidium@5587: extern const TileTypeProcs _tile_type_trees_procs = {
rubidium@4344: 	DrawTile_Trees,           /* draw_tile_proc */
rubidium@4344: 	GetSlopeZ_Trees,          /* get_slope_z_proc */
rubidium@4344: 	ClearTile_Trees,          /* clear_tile_proc */
rubidium@4344: 	GetAcceptedCargo_Trees,   /* get_accepted_cargo_proc */
rubidium@4344: 	GetTileDesc_Trees,        /* get_tile_desc_proc */
rubidium@4344: 	GetTileTrackStatus_Trees, /* get_tile_track_status_proc */
rubidium@4344: 	ClickTile_Trees,          /* click_tile_proc */
rubidium@4344: 	AnimateTile_Trees,        /* animate_tile_proc */
rubidium@4344: 	TileLoop_Trees,           /* tile_loop_clear */
rubidium@4344: 	ChangeTileOwner_Trees,    /* change_tile_owner_clear */
rubidium@4344: 	NULL,                     /* get_produced_cargo_proc */
rubidium@4344: 	NULL,                     /* vehicle_enter_tile_proc */
rubidium@7335: 	GetFoundation_Trees,      /* get_foundation_proc */
rubidium@7494: 	TerraformTile_Trees,      /* terraform_tile_proc */
truelight@0: };