tron@2186: /* $Id$ */
tron@2186: 
truelight@0: #include "stdafx.h"
Darkvater@1891: #include "openttd.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"
tron@1209: #include "tile.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@0: 
tron@1286: static int GetRandomTreeType(TileIndex tile, uint seed)
truelight@0: {
tron@1286: 	switch (_opt.landscape) {
tron@1286: 		case LT_NORMAL:
tron@1286: 			return seed * 12 >> 8;
truelight@0: 
tron@1286: 		case LT_HILLY:
tron@1286: 			return (seed >> 5) + 12;
tron@1286: 
tron@1286: 		case LT_DESERT:
tron@1286: 			switch (GetMapExtraBits(tile)) {
tron@2088: 				case 0:  return (seed >> 6) + 28;
tron@2088: 				case 1:  return (seed > 12) ? -1 : 27;
tron@2088: 				default: return (seed * 7 >> 8) + 20;
tron@1286: 			}
tron@1286: 
tron@1286: 		default:
tron@1286: 			return (seed * 9 >> 8) + 32;
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1977: static void PlaceTree(TileIndex tile, uint32 r, byte m5_or)
truelight@0: {
tron@2088: 	int tree = GetRandomTreeType(tile, GB(r, 24, 8));
truelight@0: 	byte m5;
truelight@0: 
truelight@0: 	if (tree >= 0) {
tron@2088: 		SetTileType(tile, MP_TREES);
tron@2088: 
tron@2088: 		m5 = GB(r, 16, 8);
tron@2088: 		if (GB(m5, 0, 3) == 7) m5--; // there is no growth state 7
truelight@0: 
tron@2049: 		_m[tile].m5 = m5 & 0x07;	// growth state;
tron@2049: 		_m[tile].m5 |=  m5 & 0xC0;	// amount of trees
truelight@0: 
tron@2049: 		_m[tile].m3 = tree;		// set type of tree
tron@2049: 		_m[tile].m4 = 0;		// no hedge
truelight@0: 
truelight@0: 		// above snowline?
tron@1370: 		if (_opt.landscape == LT_HILLY && GetTileZ(tile) > _opt.snow_line) {
tron@2049: 			_m[tile].m2 = 0xE0;	// set land type to snow
tron@2088: 			_m[tile].m2 |= GB(r, 24, 3); // randomize counter
tron@2088: 		} else {
tron@2088: 			_m[tile].m2 = GB(r, 24, 5); // randomize counter and ground
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: 
truelight@828: 		/* Only on tiles within 13 squares from tile,
darkvater@874: 		    on clear tiles, and NOT on farm-tiles or rocks */
tron@1035: 		if (dist <= 13 && IsTileType(cur_tile, MP_CLEAR) &&
tron@2049: 			 (_m[cur_tile].m5 & 0x1F) != 0x0F && (_m[cur_tile].m5 & 0x1C) != 8) {
truelight@0: 			PlaceTree(cur_tile, r, dist <= 6 ? 0xC0 : 0);
truelight@0: 		}
tron@2088: 	}
truelight@0: }
truelight@0: 
tron@1093: static void PlaceMoreTrees(void)
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: 
tron@1093: void PlaceTreesRandomly(void)
truelight@0: {
tron@2088: 	uint i;
truelight@0: 
tron@1202: 	i = ScaleByMapSize(1000);
truelight@0: 	do {
tron@2088: 		uint32 r = Random();
tron@2088: 		TileIndex tile = RandomTileSeed(r);
darkvater@874: 		/* Only on clear tiles, and NOT on farm-tiles or rocks */
tron@2049: 		if (IsTileType(tile, MP_CLEAR) && (_m[tile].m5 & 0x1F) != 0x0F && (_m[tile].m5 & 0x1C) != 8) {
truelight@0: 			PlaceTree(tile, r, 0);
truelight@0: 		}
truelight@0: 	} while (--i);
truelight@0: 
truelight@0: 	/* place extra trees at rainforest area */
truelight@0: 	if (_opt.landscape == LT_DESERT) {
tron@1202: 		i = ScaleByMapSize(15000);
truelight@0: 
truelight@0: 		do {
tron@2088: 			uint32 r = Random();
tron@2088: 			TileIndex tile = RandomTileSeed(r);
tron@1035: 			if (IsTileType(tile, MP_CLEAR) && GetMapExtraBits(tile) == 2) {
truelight@0: 				PlaceTree(tile, r, 0);
truelight@0: 			}
truelight@0: 		} while (--i);
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1093: void GenerateTrees(void)
truelight@0: {
tron@2088: 	uint i;
truelight@0: 
tron@2088: 	if (_opt.landscape != LT_CANDY) PlaceMoreTrees();
tron@2088: 
tron@2088: 	for (i = _opt.landscape == LT_HILLY ? 15 : 6; i != 0; i--) {
tron@2088: 		PlaceTreesRandomly();
truelight@0: 	}
truelight@0: }
truelight@0: 
Darkvater@1784: /** Plant a tree.
Darkvater@1784:  * @param x,y start tile of area-drag of tree plantation
Darkvater@1784:  * @param p1 tree type, -1 means random.
Darkvater@1784:  * @param p2 end tile of area-drag
truelight@0:  */
truelight@0: int32 CmdPlantTree(int ex, int ey, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	int32 cost;
Darkvater@2118: 	int sx, sy, x, y;
tron@1286: 
Darkvater@1784: 	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
Darkvater@2118: 	sx = TileX(p2);
Darkvater@2118: 	sy = TileY(p2);
Darkvater@2118: 	ex /= 16; ey /= 16;
truelight@0: 	if (ex < sx) intswap(ex, sx);
truelight@0: 	if (ey < sy) intswap(ey, sy);
truelight@193: 
truelight@0: 	cost = 0; // total cost
truelight@0: 
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: 			if (!EnsureNoVehicle(tile)) continue;
truelight@0: 
tron@2088: 			switch (GetTileType(tile)) {
tron@1286: 				case MP_TREES:
tron@1286: 					// no more space for trees?
tron@2088: 					if (_game_mode != GM_EDITOR && (_m[tile].m5 & 0xC0) == 0xC0) {
tron@1286: 						_error_message = STR_2803_TREE_ALREADY_HERE;
tron@1286: 						continue;
truelight@0: 					}
truelight@0: 
tron@1286: 					if (flags & DC_EXEC) {
tron@2088: 						_m[tile].m5 += 0x40;
tron@2088: 						MarkTileDirtyByTile(tile);
tron@1286: 					}
tron@1286: 					// 2x as expensive to add more trees to an existing tile
tron@1286: 					cost += _price.build_trees * 2;
tron@1286: 					break;
tron@1286: 
tron@1286: 				case MP_CLEAR:
tron@2088: 					if (!IsTileOwner(tile, OWNER_NONE)) {
tron@1286: 						_error_message = STR_2804_SITE_UNSUITABLE;
tron@1286: 						continue;
truelight@0: 					}
truelight@193: 
tron@1286: 					// it's expensive to clear farmland
tron@2088: 					if ((_m[tile].m5 & 0x1F) == 0xF)
tron@1286: 						cost += _price.clear_3;
tron@2088: 					else if ((_m[tile].m5 & 0x1C) == 8)
tron@1286: 						cost += _price.clear_2;
truelight@0: 
tron@1286: 					if (flags & DC_EXEC) {
tron@1286: 						int treetype;
tron@1286: 						int m2;
tron@1286: 
tron@1286: 						if (_game_mode != GM_EDITOR && _current_player < MAX_PLAYERS) {
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: 
tron@2088: 						switch (_m[tile].m5 & 0x1C) {
tron@1286: 							case 0x04:
tron@1286: 								m2 = 16;
tron@1286: 								break;
tron@1286: 
tron@1286: 							case 0x10:
tron@2088: 								m2 = ((_m[tile].m5 & 3) << 6) | 0x20;
tron@1286: 								break;
tron@1286: 
tron@1286: 							default:
tron@1286: 								m2 = 0;
tron@1286: 								break;
tron@1286: 						}
tron@1286: 
tron@1286: 						treetype = p1;
tron@1286: 						if (treetype == -1) {
tron@2088: 							treetype = GetRandomTreeType(tile, Random() >> 24);
tron@1286: 							if (treetype == -1) treetype = 27;
tron@1286: 						}
tron@1286: 
tron@2088: 						ModifyTile(tile,
tron@1286: 							MP_SETTYPE(MP_TREES) |
tron@1286: 							MP_MAP2 | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5,
tron@1286: 							m2, /* map2 */
tron@1286: 							treetype, /* map3lo */
tron@1286: 							_game_mode == GM_EDITOR ? 3 : 0 /* map5 */
tron@1286: 						);
tron@1286: 
tron@1286: 						if (_game_mode == GM_EDITOR && IS_BYTE_INSIDE(treetype, 0x14, 0x1B))
tron@2088: 							SetMapExtraBits(tile, 2);
truelight@0: 					}
tron@1286: 					cost += _price.build_trees;
tron@1286: 					break;
tron@1286: 
tron@1286: 				default:
tron@1286: 					_error_message = STR_2804_SITE_UNSUITABLE;
tron@1286: 					break;
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@193: 
Darkvater@1784: 	return (cost == 0) ? CMD_ERROR : cost;
truelight@0: }
truelight@0: 
truelight@0: typedef struct TreeListEnt {
truelight@0: 	uint32 image;
truelight@0: 	byte x,y;
truelight@0: } TreeListEnt;
truelight@0: 
truelight@0: static void DrawTile_Trees(TileInfo *ti)
truelight@0: {
truelight@817: 	uint16 m2;
truelight@0: 	const uint32 *s;
truelight@0: 	const byte *d;
truelight@0: 	byte z;
truelight@0: 
tron@2049: 	m2 = _m[ti->tile].m2;
truelight@0: 
tron@2088: 	if ((m2 & 0x30) == 0) {
truelight@0: 		DrawClearLandTile(ti, 3);
tron@2088: 	} else if ((m2 & 0x30) == 0x20) {
truelight@0: 		DrawGroundSprite(_tree_sprites_1[m2 >> 6] + _tileh_to_sprite[ti->tileh]);
truelight@0: 	} else {
truelight@0: 		DrawHillyLandTile(ti);
truelight@0: 	}
truelight@0: 
tron@2220: 	DrawClearLandFence(ti);
truelight@0: 
truelight@0: 	z = ti->z;
truelight@0: 	if (ti->tileh != 0) {
truelight@0: 		z += 4;
celestar@2085: 		if (IsSteepTileh(ti->tileh))
truelight@0: 			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@2088: 		index = GB(tmp, 6, 2) + (_m[ti->tile].m3 << 2);
truelight@193: 
truelight@0: 		/* different tree styles above one of the grounds */
truelight@0: 		if ((m2 & 0xB0) == 0xA0 && index >= 48 && index < 80)
truelight@0: 			index += 164 - 48;
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: 
tron@2088: 	if (!(_display_opt & DO_TRANS_BUILDINGS) || !_patches.invisible_trees) {
tron@2088: 		TreeListEnt te[4];
tron@2088: 		uint i;
truelight@0: 
truelight@0: 		/* put the trees to draw in a list */
truelight@0: 		i = (ti->map5 >> 6) + 1;
truelight@0: 		do {
tron@2243: 			uint32 image = s[0] + (--i == 0 ? GB(ti->map5, 0, 3) : 3);
tron@497: 			if (_display_opt & DO_TRANS_BUILDINGS)
celestar@2148: 				MAKE_TRANSPARENT(image);
truelight@0: 			te[i].image = image;
truelight@0: 			te[i].x = d[0];
truelight@0: 			te[i].y = d[1];
truelight@0: 			s++;
tron@2088: 			d += 2;
truelight@0: 		} while (i);
truelight@0: 
truelight@0: 		/* draw them in a sorted way */
truelight@0: 		for(;;) {
truelight@0: 			byte min = 0xFF;
truelight@0: 			TreeListEnt *tep = NULL;
truelight@0: 
truelight@0: 			i = (ti->map5 >> 6) + 1;
truelight@0: 			do {
tron@2088: 				if (te[--i].image != 0 && (byte)(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: 
truelight@0: 			AddSortableSpriteToDraw(tep->image, ti->x + tep->x, ti->y + tep->y, 5, 5, 0x10, z);
truelight@0: 			tep->image = 0;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	EndSpriteCombine();
truelight@0: }
truelight@0: 
truelight@0: 
tron@2537: static uint GetSlopeZ_Trees(const TileInfo* ti)
tron@2537: {
tron@2243: 	return GetPartialZ(ti->x & 0xF, ti->y & 0xF, ti->tileh) + ti->z;
truelight@0: }
truelight@0: 
Darkvater@2436: static uint GetSlopeTileh_Trees(const TileInfo *ti) {
dominik@39: 	return ti->tileh;
dominik@39: }
dominik@39: 
tron@1977: static int32 ClearTile_Trees(TileIndex tile, byte flags)
tron@1977: {
tron@2243: 	uint num;
truelight@0: 
truelight@0: 	if (flags & DC_EXEC && _current_player < MAX_PLAYERS) {
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@2243: 	num = GB(_m[tile].m5, 6, 2) + 1;
tron@2243: 	if (IS_INT_INSIDE(_m[tile].m3, 20, 26 + 1)) num *= 4;
truelight@0: 
tron@2243: 	if (flags & DC_EXEC) DoClearSquare(tile);
truelight@0: 
truelight@0: 	return 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: {
truelight@0: 	byte b;
truelight@0: 	StringID str;
truelight@0: 
tron@1901: 	td->owner = GetTileOwner(tile);
truelight@0: 
tron@2049: 	b = _m[tile].m3;
truelight@0: 	(str=STR_2810_CACTUS_PLANTS, b==0x1B) ||
truelight@0: 	(str=STR_280F_RAINFOREST, IS_BYTE_INSIDE(b, 0x14, 0x1A+1)) ||
truelight@0: 	(str=STR_280E_TREES, true);
truelight@193: 	td->str = str;
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: {
tron@2243: 	static const SoundFx forest_sounds[] = {
tron@2243: 		SND_42_LOON_BIRD,
tron@2243: 		SND_43_LION,
tron@2243: 		SND_44_MONKEYS,
tron@2243: 		SND_48_DISTANT_BIRD
tron@2243: 	};
truelight@0: 
tron@2243: 	byte b = GetMapExtraBits(tile);
tron@2243: 
tron@2088: 	if (b == 2) {
tron@2088: 		uint32 r = Random();
truelight@0: 
tron@2243: 		if (CHANCE16I(1, 200, r)) SndPlayTileFx(forest_sounds[GB(r, 16, 2)], tile);
truelight@0: 	} else if (b == 1) {
tron@2243: 		if (GB(_m[tile].m2, 4, 2) != 2) {
tron@2243: 			SB(_m[tile].m2, 4, 2, 2);
tron@2243: 			SB(_m[tile].m2, 6, 2, 3);
truelight@0: 			MarkTileDirtyByTile(tile);
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1977: static void TileLoopTreesAlps(TileIndex tile)
truelight@0: {
truelight@0: 	byte tmp, m2;
truelight@0: 	int k;
truelight@0: 
truelight@0: 	/* distance from snow line, in steps of 8 */
truelight@0: 	k = GetTileZ(tile) - _opt.snow_line;
truelight@0: 
tron@2230: 	tmp = _m[tile].m2 & 0xF0;
truelight@0: 
truelight@0: 	if (k < -8) {
tron@2088: 		if ((tmp & 0x30) != 0x20) return;
tron@2243: 		m2 = 0; // no snow
truelight@0: 	} else if (k == -8) {
tron@2243: 		m2 = 0x20; // 1/4 snow
tron@2088: 		if (tmp == m2) return;
tron@2243: 	} else if (k == 0) {
tron@2243: 		m2 = 0x60;// 1/2 snow
tron@2088: 		if (tmp == m2) return;
truelight@0: 	} else if (k == 8) {
tron@2243: 		m2 = 0xA0; // 3/4 snow
tron@2088: 		if (tmp == m2) return;
truelight@0: 	} else {
tron@2230: 		if (tmp == 0xE0) {
tron@2088: 			uint32 r = Random();
tron@2243: 			if (CHANCE16I(1, 200, r)) {
tron@541: 				SndPlayTileFx((r & 0x80000000) ? SND_39_HEAVY_WIND : SND_34_WIND, tile);
truelight@0: 			}
truelight@0: 			return;
truelight@0: 		} else {
tron@2243: 			m2 = 0xE0; // full snow
truelight@0: 		}
truelight@0: 	}
truelight@0: 
tron@2049: 	_m[tile].m2 &= 0xF;
tron@2049: 	_m[tile].m2 |= m2;
truelight@0: 	MarkTileDirtyByTile(tile);
truelight@0: }
truelight@0: 
tron@1977: static void TileLoop_Trees(TileIndex tile)
truelight@0: {
truelight@817: 	byte m5;
truelight@817: 	uint16 m2;
truelight@0: 
tron@909: 	static const TileIndexDiffC _tileloop_trees_dir[] = {
tron@909: 		{-1, -1},
tron@909: 		{ 0, -1},
tron@909: 		{ 1, -1},
tron@909: 		{-1,  0},
tron@909: 		{ 1,  0},
tron@909: 		{-1,  1},
tron@909: 		{ 0,  1},
tron@909: 		{ 1,  1}
truelight@0: 	};
truelight@0: 
truelight@0: 	if (_opt.landscape == LT_DESERT) {
truelight@0: 		TileLoopTreesDesert(tile);
truelight@0: 	} else if (_opt.landscape == LT_HILLY) {
truelight@0: 		TileLoopTreesAlps(tile);
truelight@0: 	}
truelight@0: 
truelight@0: 	TileLoopClearHelper(tile);
truelight@0: 
truelight@0: 	/* increase counter */
tron@2238: 	AB(_m[tile].m2, 0, 4, 1);
tron@2238: 	if (GB(_m[tile].m2, 0, 4) != 0) return;
truelight@0: 
tron@2049: 	m5 = _m[tile].m5;
tron@2088: 	if (GB(m5, 0, 3) == 3) {
truelight@0: 		/* regular sized tree */
tron@2088: 		if (_opt.landscape == LT_DESERT && _m[tile].m3 != 0x1B && GetMapExtraBits(tile) == 1) {
truelight@0: 			m5++; /* start destructing */
truelight@0: 		} else {
truelight@0: 			switch(Random() & 0x7) {
truelight@0: 			case 0: /* start destructing */
truelight@0: 				m5++;
truelight@0: 				break;
truelight@193: 
truelight@0: 			case 1: /* add a tree */
truelight@0: 				if (m5 < 0xC0) {
truelight@0: 					m5 = (m5 + 0x40) & ~7;
truelight@0: 					break;
truelight@0: 				}
truelight@0: 				/* fall through */
truelight@0: 
truelight@0: 			case 2: { /* add a neighbouring tree */
tron@2049: 				byte m3 = _m[tile].m3;
truelight@193: 
tron@909: 				tile += ToTileIndexDiff(_tileloop_trees_dir[Random() & 7]);
truelight@0: 
tron@2088: 				if (!IsTileType(tile, MP_CLEAR)) return;
truelight@0: 
tron@2049: 				if ( (_m[tile].m5 & 0x1C) == 4) {
tron@2049: 					_m[tile].m2 = 0x10;
tron@2049: 				} else if ((_m[tile].m5 & 0x1C) == 16) {
tron@2049: 					_m[tile].m2 = ((_m[tile].m5 & 3) << 6) | 0x20;
truelight@0: 				} else {
tron@2088: 					if ((_m[tile].m5 & 0x1F) != 3) return;
tron@2049: 					_m[tile].m2 = 0;
truelight@0: 				}
truelight@0: 
tron@2049: 				_m[tile].m3 = m3;
tron@2049: 				_m[tile].m4 = 0;
tron@1059: 				SetTileType(tile, MP_TREES);
truelight@0: 
truelight@0: 				m5 = 0;
truelight@0: 				break;
truelight@193: 			}
truelight@0: 
truelight@0: 			default:
truelight@0: 				return;
truelight@0: 			}
truelight@0: 		}
tron@2088: 	} else if (GB(m5, 0, 3) == 6) {
truelight@0: 		/* final stage of tree destruction */
tron@2088: 		if (GB(m5, 6, 2) != 0) {
truelight@0: 			/* more than one tree, delete it? */
truelight@0: 			m5 = ((m5 - 6) - 0x40) + 3;
truelight@0: 		} else {
truelight@0: 			/* just one tree, change type into MP_CLEAR */
tron@1059: 			SetTileType(tile, MP_CLEAR);
truelight@0: 
truelight@0: 			m5 = 3;
tron@2049: 			m2 = _m[tile].m2;
tron@2088: 			if ((m2 & 0x30) != 0) { // on snow/desert or rough land
truelight@0: 				m5 = (m2 >> 6) | 0x10;
tron@2088: 				if ((m2 & 0x30) != 0x20) // if not on snow/desert, then on rough land
truelight@0: 					m5 = 7;
truelight@0: 			}
tron@1902: 			SetTileOwner(tile, OWNER_NONE);
truelight@0: 		}
truelight@0: 	} else {
truelight@0: 		/* in the middle of a transition, change to next */
truelight@0: 		m5++;
truelight@0: 	}
truelight@0: 
tron@2049: 	_m[tile].m5 = m5;
truelight@0: 	MarkTileDirtyByTile(tile);
truelight@0: }
truelight@0: 
tron@1093: void OnTick_Trees(void)
truelight@0: {
truelight@0: 	uint32 r;
tron@1977: 	TileIndex tile;
truelight@0: 	byte m;
truelight@0: 	int tree;
truelight@0: 
truelight@0: 	/* place a tree at a random rainforest spot */
truelight@193: 	if (_opt.landscape == LT_DESERT &&
tron@2088: 			(r = Random(), tile = RandomTileSeed(r), GetMapExtraBits(tile) == 2) &&
tron@1035: 			IsTileType(tile, MP_CLEAR) &&
tron@2088: 			(m = _m[tile].m5 & 0x1C, m <= 4) &&
tron@2088: 			(tree = GetRandomTreeType(tile, r >> 24)) >= 0) {
truelight@193: 
truelight@0: 		ModifyTile(tile,
truelight@193: 			MP_SETTYPE(MP_TREES) |
truelight@0: 			MP_MAP2 | MP_MAP3LO | MP_MAP3HI | MP_MAP5,
truelight@0: 			(m == 4 ? 0x10 : 0),
truelight@0: 			tree,
tron@2049: 			_m[tile].m4 & ~3,
truelight@0: 			0
truelight@0: 		);
truelight@0: 	}
truelight@0: 
truelight@0: 	// 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) &&
tron@2088: 			(m = _m[tile].m5 & 0x1C, m == 0 || m == 4 || m == 0x10) &&
tron@2088: 			(tree = GetRandomTreeType(tile, r >> 24)) >= 0) {
truelight@0: 		int m2;
truelight@193: 
truelight@0: 		if (m == 0) {
truelight@0: 			m2 = 0;
truelight@0: 		} else if (m == 4) {
truelight@0: 			m2 = 0x10;
truelight@0: 		} else {
tron@2049: 			m2 = ((_m[tile].m5 & 3) << 6) | 0x20;
truelight@0: 		}
truelight@0: 
truelight@0: 		ModifyTile(tile,
truelight@193: 			MP_SETTYPE(MP_TREES) |
truelight@0: 			MP_MAP2 | MP_MAP3LO | MP_MAP3HI | MP_MAP5,
truelight@0: 			m2,
truelight@0: 			tree,
tron@2049: 			_m[tile].m4 & ~3,
truelight@0: 			0
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: 
tron@1977: static uint32 GetTileTrackStatus_Trees(TileIndex tile, TransportType 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: 
tron@1093: void InitializeTrees(void)
truelight@0: {
truelight@0: 	_trees_tick_ctr = 0;
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: const TileTypeProcs _tile_type_trees_procs = {
truelight@0: 	DrawTile_Trees,						/* draw_tile_proc */
truelight@0: 	GetSlopeZ_Trees,					/* get_slope_z_proc */
truelight@0: 	ClearTile_Trees,					/* clear_tile_proc */
truelight@0: 	GetAcceptedCargo_Trees,		/* get_accepted_cargo_proc */
truelight@0: 	GetTileDesc_Trees,				/* get_tile_desc_proc */
truelight@0: 	GetTileTrackStatus_Trees,	/* get_tile_track_status_proc */
truelight@0: 	ClickTile_Trees,					/* click_tile_proc */
truelight@0: 	AnimateTile_Trees,				/* animate_tile_proc */
truelight@0: 	TileLoop_Trees,						/* tile_loop_clear */
truelight@0: 	ChangeTileOwner_Trees,		/* change_tile_owner_clear */
truelight@0: 	NULL,											/* get_produced_cargo_proc */
truelight@0: 	NULL,											/* vehicle_enter_tile_proc */
truelight@0: 	NULL,											/* vehicle_leave_tile_proc */
dominik@39: 	GetSlopeTileh_Trees,			/* get_slope_tileh_proc */
truelight@0: };