tron@2186: /* $Id$ */
tron@2186: 
truelight@0: #include "stdafx.h"
Darkvater@1891: #include "openttd.h"
tron@507: #include "table/strings.h"
tron@2163: #include "functions.h"
tron@679: #include "map.h"
tron@2154: #include "player.h"
tron@1209: #include "tile.h"
truelight@0: #include "viewport.h"
truelight@0: #include "command.h"
tron@2153: #include "variables.h"
tron@2517: #include "table/sprites.h"
truelight@0: 
truelight@0: typedef struct TerraformerHeightMod {
truelight@0: 	TileIndex tile;
truelight@0: 	byte height;
truelight@0: } TerraformerHeightMod;
truelight@0: 
truelight@0: typedef struct TerraformerState {
truelight@0: 	int height[4];
truelight@0: 	uint32 flags;
truelight@0: 
truelight@0: 	int direction;
truelight@0: 	int modheight_count;
truelight@0: 	int tile_table_count;
truelight@193: 
truelight@0: 	int32 cost;
truelight@0: 
truelight@0: 	TileIndex *tile_table;
truelight@0: 	TerraformerHeightMod *modheight;
truelight@0: 
truelight@0: } TerraformerState;
truelight@0: 
truelight@0: static int TerraformAllowTileProcess(TerraformerState *ts, TileIndex tile)
truelight@0: {
truelight@0: 	TileIndex *t;
truelight@0: 	int count;
truelight@0: 
tron@926: 	if (TileX(tile) == MapMaxX() || TileY(tile) == MapMaxY())
truelight@0: 		return -1;
truelight@0: 
truelight@0: 	t = ts->tile_table;
truelight@0: 	for(count = ts->tile_table_count; count != 0; count--,t++) {
truelight@0: 		if (*t == tile)
truelight@0: 			return 0;
truelight@0: 	}
truelight@0: 
truelight@0: 	return 1;
truelight@0: }
truelight@0: 
truelight@0: static int TerraformGetHeightOfTile(TerraformerState *ts, TileIndex tile)
truelight@0: {
truelight@0: 	TerraformerHeightMod *mod = ts->modheight;
truelight@0: 	int count;
truelight@193: 
truelight@0: 	for(count = ts->modheight_count; count != 0; count--, mod++) {
truelight@0: 		if (mod->tile == tile)
truelight@0: 			return mod->height;
truelight@0: 	}
truelight@0: 
tron@1044: 	return TileHeight(tile);
truelight@0: }
truelight@0: 
truelight@0: static void TerraformAddDirtyTile(TerraformerState *ts, TileIndex tile)
truelight@0: {
truelight@0: 	int count;
truelight@0: 	TileIndex *t;
truelight@0: 
truelight@0: 	count = ts->tile_table_count;
truelight@0: 
truelight@0: 	if (count >= 625)
truelight@0: 		return;
truelight@0: 
truelight@0: 	for(t = ts->tile_table; count != 0; count--,t++) {
truelight@0: 		if (*t == tile)
truelight@0: 			return;
truelight@0: 	}
truelight@0: 
truelight@0: 	ts->tile_table[ts->tile_table_count++] = tile;
truelight@0: }
truelight@0: 
truelight@0: static void TerraformAddDirtyTileAround(TerraformerState *ts, TileIndex tile)
truelight@0: {
tron@1981: 	TerraformAddDirtyTile(ts, tile + TileDiffXY( 0, -1));
tron@1981: 	TerraformAddDirtyTile(ts, tile + TileDiffXY(-1, -1));
tron@1981: 	TerraformAddDirtyTile(ts, tile + TileDiffXY(-1,  0));
truelight@0: 	TerraformAddDirtyTile(ts, tile);
truelight@0: }
truelight@0: 
tron@1977: static int TerraformProc(TerraformerState *ts, TileIndex tile, int mode)
truelight@0: {
truelight@0: 	int r;
truelight@0: 	int32 ret;
truelight@0: 
tron@863: 	assert(tile < MapSize());
truelight@193: 
truelight@0: 	if ((r=TerraformAllowTileProcess(ts, tile)) <= 0)
truelight@0: 		return r;
truelight@193: 
tron@1044: 	if (IsTileType(tile, MP_RAILWAY)) {
truelight@0: 		static const byte _railway_modes[4] = {8, 0x10, 4, 0x20};
truelight@0: 		static const byte _railway_dangslopes[4] = {0xd, 0xe, 7, 0xb};
tron@345: 		static const byte _railway_dangslopes2[4] = {0x2, 0x1, 0x8, 0x4};
truelight@0: 
truelight@0: 		// Nothing could be built at the steep slope - this avoids a bug
truelight@0: 		// when you have a single diagonal track in one corner on a
tron@345: 		// basement and then you raise/lower the other corner.
tron@345: 		int tileh = GetTileSlope(tile, NULL) & 0xF;
tron@345: 		if (tileh == _railway_dangslopes[mode] ||
tron@345: 				tileh == _railway_dangslopes2[mode]) {
tron@345: 			_terraform_err_tile = tile;
truelight@0: 			_error_message = STR_1008_MUST_REMOVE_RAILROAD_TRACK;
truelight@0: 			return -1;
truelight@0: 		}
truelight@0: 
truelight@0: 		// If we have a single diagonal track there, the other side of
truelight@0: 		// tile can be terraformed.
tron@2049: 		if ((_m[tile].m5&~0x40) == _railway_modes[mode])
truelight@0: 			return 0;
truelight@0: 	}
truelight@0: 
truelight@0: 	ret = DoCommandByTile(tile, 0,0, ts->flags & ~DC_EXEC, CMD_LANDSCAPE_CLEAR);
truelight@0: 
truelight@0: 	if (ret == CMD_ERROR) {
truelight@0: 		_terraform_err_tile = tile;
truelight@0: 		return -1;
truelight@0: 	}
truelight@0: 
truelight@0: 	ts->cost += ret;
truelight@0: 
truelight@0: 	if (ts->tile_table_count >= 625)
truelight@0: 		return -1;
truelight@0: 	ts->tile_table[ts->tile_table_count++] = tile;
truelight@0: 
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
tron@1977: static bool TerraformTileHeight(TerraformerState *ts, TileIndex tile, int height)
truelight@0: {
truelight@0: 	int nh;
truelight@0: 	TerraformerHeightMod *mod;
truelight@0: 	int count;
truelight@193: 
tron@863: 	assert(tile < MapSize());
truelight@0: 
truelight@0: 	if (height < 0) {
truelight@0: 		_error_message = STR_1003_ALREADY_AT_SEA_LEVEL;
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	_error_message = STR_1004_TOO_HIGH;
truelight@0: 
truelight@0: 	if (height > 0xF)
truelight@0: 		return false;
truelight@193: 
truelight@0: 	nh = TerraformGetHeightOfTile(ts, tile);
truelight@0: 	if (nh < 0 || height == nh)
truelight@193: 		return false;
truelight@193: 
tron@1981: 	if (TerraformProc(ts, tile, 0) < 0) return false;
tron@1981: 	if (TerraformProc(ts, tile + TileDiffXY( 0, -1), 1) < 0) return false;
tron@1981: 	if (TerraformProc(ts, tile + TileDiffXY(-1, -1), 2) < 0) return false;
tron@1981: 	if (TerraformProc(ts, tile + TileDiffXY(-1,  0), 3) < 0) return false;
truelight@0: 
truelight@0: 	mod = ts->modheight;
truelight@0: 	count = ts->modheight_count;
truelight@0: 
truelight@0: 	for(;;) {
truelight@0: 		if (count == 0) {
truelight@0: 			if (ts->modheight_count >= 576)
truelight@0: 				return false;
truelight@0: 			ts->modheight_count++;
truelight@0: 			break;
truelight@0: 		}
tron@1986: 		if (mod->tile == tile) break;
truelight@0: 		mod++;
truelight@0: 		count--;
truelight@0: 	}
truelight@0: 
tron@1986: 	mod->tile = tile;
truelight@0: 	mod->height = (byte)height;
truelight@0: 
truelight@0: 	ts->cost += _price.terraform;
truelight@0: 
truelight@0: 	{
truelight@0: 		int direction = ts->direction, r;
tron@909: 		const TileIndexDiffC *ttm;
truelight@0: 
tron@909: 		static const TileIndexDiffC _terraform_tilepos[] = {
tron@909: 			{ 1,  0},
tron@909: 			{-2,  0},
tron@909: 			{ 1,  1},
tron@909: 			{ 0, -2}
tron@909: 		};
truelight@0: 
tron@909: 		for(ttm = _terraform_tilepos; ttm != endof(_terraform_tilepos); ttm++) {
tron@909: 			tile += ToTileIndexDiff(*ttm);
truelight@0: 
truelight@0: 			r = TerraformGetHeightOfTile(ts, tile);
truelight@0: 			if (r != height && r-direction != height && r+direction != height) {
truelight@0: 				if (!TerraformTileHeight(ts, tile, r+direction))
truelight@0: 					return false;
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	return true;
truelight@0: }
truelight@0: 
Darkvater@1775: /** Terraform land
Darkvater@1775:  * @param x,y coordinates to terraform
Darkvater@1782:  * @param p1 corners to terraform.
Darkvater@1775:  * @param p2 direction; eg up or down
truelight@0:  */
truelight@0: int32 CmdTerraformLand(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	TerraformerState ts;
Darkvater@1775: 	TileIndex tile;
truelight@0: 	int direction;
truelight@0: 
truelight@0: 	TerraformerHeightMod modheight_data[576];
truelight@0: 	TileIndex tile_table_data[625];
truelight@0: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@0: 
truelight@0: 	_error_message = INVALID_STRING_ID;
truelight@0: 	_terraform_err_tile = 0;
truelight@0: 
truelight@0: 	ts.direction = direction = p2 ? 1 : -1;
truelight@0: 	ts.flags = flags;
truelight@0: 	ts.modheight_count = ts.tile_table_count = 0;
truelight@0: 	ts.cost = 0;
truelight@0: 	ts.modheight = modheight_data;
truelight@0: 	ts.tile_table = tile_table_data;
truelight@0: 
tron@1980: 	tile = TileVirtXY(x, y);
truelight@0: 
Darkvater@1878: 	/* Make an extra check for map-bounds cause we add tiles to the originating tile */
tron@1981: 	if (tile + TileDiffXY(1, 1) > MapSize()) return CMD_ERROR;
Darkvater@1878: 
truelight@0: 	if (p1 & 1) {
tron@1981: 		if (!TerraformTileHeight(&ts, tile + TileDiffXY(1, 0),
tron@1981: 				TileHeight(tile + TileDiffXY(1, 0)) + direction))
truelight@0: 					return CMD_ERROR;
truelight@0: 	}
truelight@0: 
truelight@0: 	if (p1 & 2) {
tron@1981: 		if (!TerraformTileHeight(&ts, tile + TileDiffXY(1, 1),
tron@1981: 				TileHeight(tile + TileDiffXY(1, 1)) + direction))
truelight@0: 					return CMD_ERROR;
truelight@0: 	}
truelight@0: 
truelight@0: 	if (p1 & 4) {
tron@1981: 		if (!TerraformTileHeight(&ts, tile + TileDiffXY(0, 1),
tron@1981: 				TileHeight(tile + TileDiffXY(0, 1)) + direction))
truelight@0: 					return CMD_ERROR;
truelight@0: 	}
truelight@0: 
truelight@0: 	if (p1 & 8) {
tron@1981: 		if (!TerraformTileHeight(&ts, tile + TileDiffXY(0, 0),
tron@1981: 				TileHeight(tile + TileDiffXY(0, 0)) + direction))
truelight@0: 					return CMD_ERROR;
truelight@0: 	}
truelight@0: 
truelight@0: 	if (direction == -1) {
truelight@0: 		/* Check if tunnel would take damage */
truelight@0: 		int count;
truelight@0: 		TileIndex *ti = ts.tile_table;
truelight@193: 
Darkvater@1775: 		for (count = ts.tile_table_count; count != 0; count--, ti++) {
truelight@0: 			uint z, t;
tron@1977: 			TileIndex tile = *ti;
truelight@0: 
tron@1981: 			z = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(0, 0));
tron@1981: 			t = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(1, 0));
truelight@0: 			if (t <= z) z = t;
tron@1981: 			t = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(1, 1));
truelight@0: 			if (t <= z) z = t;
tron@1981: 			t = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(0, 1));
truelight@0: 			if (t <= z) z = t;
truelight@0: 
truelight@0: 			if (!CheckTunnelInWay(tile, z*8))
truelight@0: 				return_cmd_error(STR_1002_EXCAVATION_WOULD_DAMAGE);
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
truelight@0: 		/* Clear the landscape at the tiles */
truelight@0: 		{
truelight@0: 			int count;
truelight@0: 			TileIndex *ti = ts.tile_table;
Darkvater@1775: 			for (count = ts.tile_table_count; count != 0; count--, ti++) {
truelight@0: 				DoCommandByTile(*ti, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
truelight@0: 			}
truelight@193: 		}
truelight@0: 
truelight@0: 		/* change the height */
truelight@0: 		{
truelight@0: 			int count;
truelight@0: 			TerraformerHeightMod *mod;
truelight@0: 
truelight@0: 			mod = ts.modheight;
Darkvater@1775: 			for (count = ts.modheight_count; count != 0; count--, mod++) {
tron@1979: 				TileIndex til = mod->tile;
truelight@193: 
tron@1059: 				SetTileHeight(til, mod->height);
truelight@0: 				TerraformAddDirtyTileAround(&ts, til);
truelight@0: 			}
truelight@0: 		}
truelight@0: 
truelight@0: 		/* finally mark the dirty tiles dirty */
truelight@0: 		{
truelight@0: 			int count;
truelight@0: 			TileIndex *ti = ts.tile_table;
Darkvater@1775: 			for (count = ts.tile_table_count; count != 0; count--, ti++) {
truelight@0: 				MarkTileDirtyByTile(*ti);
truelight@0: 			}
truelight@193: 		}
truelight@0: 	}
truelight@0: 	return ts.cost;
truelight@0: }
truelight@0: 
truelight@0: 
Darkvater@1796: /** Levels a selected (rectangle) area of land
Darkvater@1796:  * @param x,y end tile of area-drag
Darkvater@1796:  * @param p1 start tile of area drag
Darkvater@1796:  * @param p2 unused
truelight@0:  */
truelight@0: int32 CmdLevelLand(int ex, int ey, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	int size_x, size_y;
truelight@0: 	int sx, sy;
truelight@0: 	uint h, curh;
Darkvater@1796: 	TileIndex tile;
truelight@0: 	int32 ret, cost, money;
truelight@0: 
Darkvater@1796: 	if (p1 > MapSize()) return CMD_ERROR;
Darkvater@1796: 
darkvater@889: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
darkvater@889: 
truelight@0: 	// remember level height
tron@1044: 	h = TileHeight(p1);
truelight@0: 
truelight@0: 	ex >>= 4; ey >>= 4;
truelight@0: 
truelight@0: 	// make sure sx,sy are smaller than ex,ey
tron@926: 	sx = TileX(p1);
tron@926: 	sy = TileY(p1);
truelight@0: 	if (ex < sx) intswap(ex, sx);
truelight@0: 	if (ey < sy) intswap(ey, sy);
tron@1981: 	tile = TileXY(sx, sy);
truelight@0: 
truelight@0: 	size_x = ex-sx+1;
truelight@0: 	size_y = ey-sy+1;
truelight@0: 
truelight@0: 	money = GetAvailableMoneyForCommand();
truelight@0: 	cost = 0;
truelight@0: 
Darkvater@1796: 	BEGIN_TILE_LOOP(tile2, size_x, size_y, tile) {
tron@1044: 		curh = TileHeight(tile2);
truelight@0: 		while (curh != h) {
Darkvater@1796: 			ret = DoCommandByTile(tile2, 8, (curh > h) ? 0 : 1, flags & ~DC_EXEC, CMD_TERRAFORM_LAND);
Darkvater@1796: 			if (CmdFailed(ret)) break;
truelight@0: 			cost += ret;
truelight@0: 
truelight@0: 			if (flags & DC_EXEC) {
truelight@0: 				if ((money -= ret) < 0) {
truelight@0: 					_additional_cash_required = ret;
truelight@0: 					return cost - ret;
truelight@0: 				}
Darkvater@1796: 				DoCommandByTile(tile2, 8, (curh > h) ? 0 : 1, flags, CMD_TERRAFORM_LAND);
truelight@0: 			}
truelight@0: 
truelight@0: 			curh += (curh > h) ? -1 : 1;
truelight@0: 		}
Darkvater@1796: 	} END_TILE_LOOP(tile2, size_x, size_y, tile)
truelight@0: 
Darkvater@1796: 	return (cost == 0) ? CMD_ERROR : cost;
truelight@0: }
truelight@0: 
Darkvater@1782: /** Purchase a land area. Actually you only purchase one tile, so
Darkvater@1782:  * the name is a bit confusing ;p
Darkvater@1782:  * @param x,y the tile the player is purchasing
Darkvater@1782:  * @param p1 unused
Darkvater@1782:  * @param p2 unused
truelight@0:  */
truelight@0: int32 CmdPurchaseLandArea(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
Darkvater@1782: 	TileIndex tile;
truelight@0: 	int32 cost;
truelight@193: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@193: 
tron@1980: 	tile = TileVirtXY(x, y);
truelight@0: 
Darkvater@1782: 	if (!EnsureNoVehicle(tile)) return CMD_ERROR;
truelight@0: 
tron@2049: 	if (IsTileType(tile, MP_UNMOVABLE) && _m[tile].m5 == 3 &&
tron@1901: 			IsTileOwner(tile, _current_player))
truelight@0: 		return_cmd_error(STR_5807_YOU_ALREADY_OWN_IT);
truelight@0: 
truelight@0: 	cost = DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
Darkvater@1782: 	if (CmdFailed(cost)) return CMD_ERROR;
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
truelight@0: 		ModifyTile(tile,
truelight@0: 			MP_SETTYPE(MP_UNMOVABLE) | MP_MAPOWNER_CURRENT | MP_MAP5,
truelight@0: 			3 /* map5 */
truelight@0: 			);
truelight@0: 	}
truelight@0: 
truelight@0: 	return cost + _price.purchase_land * 10;
truelight@0: }
truelight@0: 
truelight@0: 
tron@1977: static int32 ClearTile_Clear(TileIndex tile, byte flags)
tron@1095: {
tron@2220: 	static const int32 null = 0;
tron@2220: 	static const int32* clear_price_table[] = {
tron@2220: 		&null,
tron@2220: 		&_price.clear_1,
tron@2220: 		&_price.clear_1,
tron@2220: 		&_price.clear_1,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.clear_2,
tron@2220: 		&_price.clear_2,
tron@2220: 		&_price.clear_2,
tron@2220: 		&_price.clear_2,
tron@2220: 		&_price.clear_3,
tron@2220: 		&_price.clear_3,
tron@2220: 		&_price.clear_3,
tron@2220: 		&_price.clear_3,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.purchase_land,
tron@2220: 		&_price.clear_2,
tron@2220: 		&_price.clear_2,
tron@2220: 		&_price.clear_2,
tron@2220: 		&_price.clear_2,
truelight@0: 	};
tron@2220: 	const int32 *price = clear_price_table[GB(_m[tile].m5, 0, 5)];
truelight@0: 
tron@2220: 	if (flags & DC_EXEC) DoClearSquare(tile);
truelight@0: 
truelight@0: 	return *price;
truelight@0: }
truelight@0: 
Darkvater@1782: /** Sell a land area. Actually you only sell one tile, so
Darkvater@1782:  * the name is a bit confusing ;p
Darkvater@1782:  * @param x,y the tile the player is selling
Darkvater@1782:  * @param p1 unused
Darkvater@1782:  * @param p2 unused
Darkvater@1782:  */
truelight@0: int32 CmdSellLandArea(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
Darkvater@1782: 	TileIndex tile;
truelight@193: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@0: 
tron@1980: 	tile = TileVirtXY(x, y);
truelight@0: 
tron@2049: 	if (!IsTileType(tile, MP_UNMOVABLE) || _m[tile].m5 != 3) return CMD_ERROR;
Darkvater@1878: 	if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER) return CMD_ERROR;
Darkvater@1878: 
truelight@0: 
Darkvater@1782: 	if (!EnsureNoVehicle(tile)) return CMD_ERROR;
truelight@0: 
truelight@0: 	if (flags & DC_EXEC)
truelight@0: 		DoClearSquare(tile);
truelight@0: 
Darkvater@1782: 	return - _price.purchase_land * 2;
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: #include "table/clear_land.h"
truelight@0: 
truelight@0: 
Darkvater@2436: void DrawClearLandTile(const TileInfo *ti, byte set)
truelight@0: {
tron@2517: 	DrawGroundSprite(SPR_FLAT_BARE_LAND + _tileh_to_sprite[ti->tileh] + set * 19);
truelight@0: }
truelight@0: 
Darkvater@2436: void DrawHillyLandTile(const TileInfo *ti)
truelight@0: {
truelight@0: 	if (ti->tileh != 0) {
tron@2517: 		DrawGroundSprite(SPR_FLAT_ROUGH_LAND + _tileh_to_sprite[ti->tileh]);
truelight@0: 	} else {
tron@2140: 		DrawGroundSprite(_landscape_clear_sprites[GB(ti->x ^ ti->y, 4, 3)]);
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@2220: void DrawClearLandFence(const TileInfo *ti)
truelight@0: {
tron@2220: 	byte m4 = _m[ti->tile].m4;
truelight@0: 	byte z = ti->z;
truelight@193: 
truelight@0: 	if (ti->tileh & 2) {
truelight@0: 		z += 8;
truelight@0: 		if (ti->tileh == 0x17)
truelight@0: 			z += 8;
truelight@0: 	}
truelight@0: 
tron@2220: 	if (GB(m4, 5, 3) != 0) {
tron@2220: 		DrawGroundSpriteAt(_clear_land_fence_sprites_1[GB(m4, 5, 3) - 1] + _fence_mod_by_tileh[ti->tileh], ti->x, ti->y, z);
truelight@0: 	}
truelight@0: 
tron@2220: 	if (GB(m4, 2, 3) != 0) {
tron@2220: 		DrawGroundSpriteAt(_clear_land_fence_sprites_1[GB(m4, 2, 3) - 1] + _fence_mod_by_tileh_2[ti->tileh], ti->x, ti->y, z);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static void DrawTile_Clear(TileInfo *ti)
truelight@0: {
tron@2220: 	switch (GB(ti->map5, 2, 3)) {
truelight@0: 	case 0:
tron@2220: 		DrawClearLandTile(ti, GB(ti->map5, 0, 2));
truelight@0: 		break;
truelight@0: 
truelight@0: 	case 1:
truelight@0: 		DrawHillyLandTile(ti);
truelight@0: 		break;
truelight@0: 
truelight@0: 	case 2:
tron@2517: 		DrawGroundSprite(SPR_FLAT_ROCKY_LAND_1 + _tileh_to_sprite[ti->tileh]);
truelight@0: 		break;
truelight@0: 
truelight@0: 	case 3:
tron@2220: 		DrawGroundSprite(_clear_land_sprites_1[GB(_m[ti->tile].m3, 0, 4)] + _tileh_to_sprite[ti->tileh]);
truelight@0: 		break;
truelight@0: 
truelight@0: 	case 4:
tron@2220: 		DrawGroundSprite(_clear_land_sprites_2[GB(ti->map5, 0, 2)] + _tileh_to_sprite[ti->tileh]);
truelight@0: 		break;
truelight@0: 
truelight@0: 	case 5:
tron@2220: 		DrawGroundSprite(_clear_land_sprites_3[GB(ti->map5, 0, 2)] + _tileh_to_sprite[ti->tileh]);
truelight@0: 		break;
truelight@0: 	}
truelight@193: 
tron@2220: 	DrawClearLandFence(ti);
truelight@0: }
truelight@0: 
tron@2537: static uint GetSlopeZ_Clear(const TileInfo* ti)
tron@1095: {
tron@1095: 	return GetPartialZ(ti->x & 0xF, ti->y & 0xF, ti->tileh) + ti->z;
tron@1095: }
truelight@0: 
Darkvater@2436: static uint GetSlopeTileh_Clear(const TileInfo *ti)
dominik@39: {
dominik@39: 	return ti->tileh;
dominik@39: }
dominik@39: 
tron@1977: static void GetAcceptedCargo_Clear(TileIndex tile, AcceptedCargo ac)
truelight@0: {
truelight@193: 	/* unused */
truelight@0: }
truelight@0: 
tron@1977: static void AnimateTile_Clear(TileIndex tile)
truelight@0: {
truelight@0: 	/* unused */
truelight@0: }
truelight@0: 
tron@1293: void TileLoopClearHelper(TileIndex tile)
truelight@0: {
tron@2221: 	byte self;
tron@2221: 	byte neighbour;
tron@1293: 	TileIndex dirty = INVALID_TILE;
truelight@0: 
tron@1293: 	switch (GetTileType(tile)) {
tron@1293: 		case MP_CLEAR:
tron@2221: 			self = (GB(_m[tile].m5, 0, 5) == 15);
tron@1298: 			break;
tron@1293: 
tron@1293: 		default:
tron@2221: 			self = 0;
tron@1293: 			break;
truelight@0: 	}
truelight@0: 
tron@1293: 	switch (GetTileType(TILE_ADDXY(tile, 1, 0))) {
tron@1293: 		case MP_CLEAR:
tron@2221: 			neighbour = (GB(_m[TILE_ADDXY(tile, 1, 0)].m5, 0, 5) == 15);
tron@1293: 			break;
tron@1293: 
tron@1293: 		default:
tron@2221: 			neighbour = 0;
tron@1293: 			break;
truelight@0: 	}
truelight@0: 
tron@2221: 	if (GB(_m[tile].m4, 5, 3) == 0) {
tron@2221: 		if (self != neighbour) {
tron@2221: 			SB(_m[tile].m4, 5, 3, 3);
truelight@0: 			dirty = tile;
truelight@193: 		}
truelight@0: 	} else {
tron@2221: 		if (self == 0 && neighbour == 0) {
tron@2221: 			SB(_m[tile].m4, 5, 3, 0);
truelight@0: 			dirty = tile;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
tron@1293: 	switch (GetTileType(TILE_ADDXY(tile, 0, 1))) {
tron@1293: 		case MP_CLEAR:
tron@2221: 			neighbour = (GB(_m[TILE_ADDXY(tile, 0, 1)].m5, 0, 5) == 15);
tron@1293: 			break;
tron@1293: 
tron@1293: 		default:
tron@2221: 			neighbour = 0;
tron@1293: 			break;
truelight@0: 	}
truelight@0: 
tron@2221: 	if (GB(_m[tile].m4, 2, 3) == 0) {
tron@2221: 		if (self != neighbour) {
tron@2221: 			SB(_m[tile].m4, 2, 3, 3);
truelight@0: 			dirty = tile;
truelight@193: 		}
truelight@0: 	} else {
tron@2221: 		if (self == 0 && neighbour == 0) {
tron@2221: 			SB(_m[tile].m4, 2, 3, 0);
truelight@0: 			dirty = tile;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
tron@2221: 	if (dirty != INVALID_TILE) MarkTileDirtyByTile(dirty);
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: /* convert into snowy tiles */
tron@1977: static void TileLoopClearAlps(TileIndex tile)
truelight@0: {
truelight@0: 	int k;
truelight@0: 	byte m5,tmp;
truelight@0: 
truelight@0: 	/* distance from snow line, in steps of 8 */
truelight@0: 	k = GetTileZ(tile) - _opt.snow_line;
truelight@0: 
tron@2049: 	m5 = _m[tile].m5 & 0x1C;
tron@2049: 	tmp = _m[tile].m5 & 3;
truelight@193: 
truelight@0: 	if (k < -8) {
truelight@0: 		/* snow_m2_down */
truelight@0: 		if (m5 != 0x10)
truelight@0: 			return;
truelight@0: 		if (tmp == 0)
truelight@0: 			m5 = 3;
truelight@0: 	} else if (k == -8) {
truelight@0: 		/* snow_m1 */
truelight@0: 		if (m5 != 0x10) {
truelight@0: 			m5 = 0x10;
truelight@0: 		} else if (tmp != 0) {
truelight@0: 			m5 = (tmp - 1) + 0x10;
truelight@0: 		} else
truelight@0: 			return;
truelight@0: 	} else if (k < 8) {
truelight@0: 		/* snow_0 */
truelight@0: 		if (m5 != 0x10) {
truelight@0: 			m5 = 0x10;
truelight@0: 		} else if (tmp != 1) {
truelight@0: 			m5 = 1;
truelight@0: 			if (tmp != 0)
truelight@0: 				m5 = tmp - 1;
truelight@0: 			m5 += 0x10;
truelight@0: 		} else
truelight@0: 			return;
truelight@0: 	} else if (k == 8) {
truelight@0: 		/* snow_p1 */
truelight@0: 		if (m5 != 0x10) {
truelight@0: 			m5 = 0x10;
truelight@0: 		} else if (tmp != 2) {
truelight@0: 			m5 = 2;
truelight@0: 			if (tmp <= 2)
truelight@0: 				m5 = tmp + 1;
truelight@0: 			m5 += 0x10;
truelight@0: 		} else
truelight@0: 			return;
truelight@0: 	} else {
truelight@0: 		/* snow_p2_up */
truelight@0: 		if (m5 != 0x10) {
truelight@0: 			m5 = 0x10;
truelight@0: 		} else if (tmp != 3) {
truelight@0: 			m5 = tmp + 1 + 0x10;
truelight@0: 		} else
truelight@0: 			return;
truelight@0: 	}
truelight@0: 
tron@2049: 	_m[tile].m5 = m5;
truelight@0: 	MarkTileDirtyByTile(tile);
truelight@0: }
truelight@0: 
tron@1977: static void TileLoopClearDesert(TileIndex tile)
truelight@0: {
tron@2049:  	if ( (_m[tile].m5 & 0x1C) == 0x14)
truelight@0: 		return;
truelight@0: 
truelight@0: 	if (GetMapExtraBits(tile) == 1) {
tron@2049: 		_m[tile].m5 = 0x17;
truelight@0: 	} else {
tron@1981: 		if (GetMapExtraBits(tile + TileDiffXY( 1,  0)) != 1 &&
tron@1981: 				GetMapExtraBits(tile + TileDiffXY(-1,  0)) != 1 &&
tron@1981: 				GetMapExtraBits(tile + TileDiffXY( 0,  1)) != 1 &&
tron@1981: 				GetMapExtraBits(tile + TileDiffXY( 0, -1)) != 1)
tron@1981: 			return;
tron@2049: 		_m[tile].m5 = 0x15;
truelight@0: 	}
truelight@0: 
truelight@0: 	MarkTileDirtyByTile(tile);
truelight@0: }
truelight@0: 
tron@1977: static void TileLoop_Clear(TileIndex tile)
truelight@0: {
truelight@0: 	byte m5,m3;
truelight@0: 
truelight@0: 	TileLoopClearHelper(tile);
truelight@193: 
truelight@0: 	if (_opt.landscape == LT_DESERT) {
truelight@0: 		TileLoopClearDesert(tile);
truelight@0: 	} else if (_opt.landscape == LT_HILLY) {
truelight@0: 		TileLoopClearAlps(tile);
truelight@0: 	}
truelight@0: 
tron@2049: 	m5 = _m[tile].m5;
truelight@0: 	if ( (m5 & 0x1C) == 0x10 || (m5 & 0x1C) == 0x14)
truelight@0: 		return;
truelight@0: 
truelight@0: 	if ( (m5 & 0x1C) != 0xC) {
truelight@0: 		if ( (m5 & 3) == 3)
truelight@0: 			return;
truelight@193: 
truelight@0: 		if (_game_mode != GM_EDITOR) {
truelight@0: 			m5 += 0x20;
truelight@0: 			if (m5 >= 0x20) {
truelight@0: 				// Didn't overflow
tron@2049: 				_m[tile].m5 = m5;
truelight@0: 				return;
truelight@0: 			}
truelight@0: 			/* did overflow, so continue */
truelight@0: 		} else {
tron@2150: 			m5 = (GB(Random(), 0, 8) > 21) ? 2 : 6;
truelight@0: 		}
truelight@0: 		m5++;
truelight@0: 	} else if (_game_mode != GM_EDITOR) {
truelight@0: 		/* handle farm field */
truelight@0: 		m5 += 0x20;
truelight@0: 		if (m5 >= 0x20) {
truelight@0: 			// Didn't overflow
tron@2049: 			_m[tile].m5 = m5;
truelight@0: 			return;
truelight@0: 		}
truelight@0: 		/* overflowed */
tron@2049: 		m3 = _m[tile].m3 + 1;
truelight@0: 		assert( (m3 & 0xF) != 0);
truelight@0: 		if ( (m3 & 0xF) >= 9) /* NOTE: will not work properly if m3&0xF == 0xF */
truelight@0: 			m3 &= ~0xF;
tron@2049: 		_m[tile].m3 = m3;
truelight@0: 	}
truelight@0: 
tron@2049: 	_m[tile].m5 = m5;
truelight@0: 	MarkTileDirtyByTile(tile);
truelight@0: }
truelight@0: 
tron@1093: void GenerateClearTile(void)
truelight@0: {
tron@2150: 	uint i;
tron@1977: 	TileIndex tile;
truelight@0: 
truelight@0: 	/* add hills */
tron@2635: 	i = ScaleByMapSize(GB(Random(), 0, 10) + 0x400);
truelight@0: 	do {
ludde@2051: 		tile = RandomTile();
tron@2150: 		if (IsTileType(tile, MP_CLEAR)) SB(_m[tile].m5, 2, 2, 1);
truelight@0: 	} while (--i);
truelight@0: 
truelight@0: 	/* add grey squares */
tron@2635: 	i = ScaleByMapSize(GB(Random(), 0, 7) + 0x80);
truelight@0: 	do {
tron@2150: 		uint32 r = Random();
ludde@2051: 		tile = RandomTileSeed(r);
tron@1035: 		if (IsTileType(tile, MP_CLEAR)) {
tron@2150: 			uint j = GB(r, 16, 4) + 5;
truelight@0: 			for(;;) {
tron@1977: 				TileIndex tile_new;
tron@1977: 
tron@2150: 				SB(_m[tile].m5, 2, 2, 2);
truelight@0: 				do {
truelight@0: 					if (--j == 0) goto get_out;
tron@2635: 					tile_new = tile + TileOffsByDir(GB(Random(), 0, 2));
tron@1035: 				} while (!IsTileType(tile_new, MP_CLEAR));
truelight@0: 				tile = tile_new;
truelight@0: 			}
truelight@0: get_out:;
truelight@0: 		}
truelight@0: 	} while (--i);
truelight@0: }
truelight@0: 
tron@1977: static void ClickTile_Clear(TileIndex tile)
truelight@0: {
truelight@0: 	/* not used */
truelight@0: }
truelight@0: 
tron@1977: static uint32 GetTileTrackStatus_Clear(TileIndex tile, TransportType mode)
truelight@0: {
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
tron@2220: static const StringID _clear_land_str[] = {
truelight@0: 	STR_080B_ROUGH_LAND,
truelight@0: 	STR_080A_ROCKS,
truelight@0: 	STR_080E_FIELDS,
truelight@0: 	STR_080F_SNOW_COVERED_LAND,
truelight@0: 	STR_0810_DESERT,
truelight@0: 	0,
truelight@0: 	0,
truelight@0: 	STR_080C_BARE_LAND,
truelight@0: 	STR_080D_GRASS,
truelight@0: 	STR_080D_GRASS,
truelight@0: 	STR_080D_GRASS,
truelight@0: };
truelight@0: 
tron@1977: static void GetTileDesc_Clear(TileIndex tile, TileDesc *td)
truelight@0: {
tron@2220: 	uint i = GB(_m[tile].m5, 2, 3);
tron@2220: 	if (i == 0) i = GB(_m[tile].m5, 0, 2) + 8;
truelight@0: 	td->str = _clear_land_str[i - 1];
tron@1901: 	td->owner = GetTileOwner(tile);
truelight@0: }
truelight@0: 
Darkvater@2436: static void ChangeTileOwner_Clear(TileIndex tile, PlayerID old_player, PlayerID new_player)
truelight@0: {
truelight@0: 	return;
truelight@0: }
truelight@0: 
tron@1093: void InitializeClearLand(void)
tron@1093: {
truelight@0: 	_opt.snow_line = _patches.snow_line_height * 8;
truelight@0: }
truelight@0: 
truelight@0: const TileTypeProcs _tile_type_clear_procs = {
truelight@0: 	DrawTile_Clear,						/* draw_tile_proc */
truelight@0: 	GetSlopeZ_Clear,					/* get_slope_z_proc */
truelight@0: 	ClearTile_Clear,					/* clear_tile_proc */
truelight@0: 	GetAcceptedCargo_Clear,		/* get_accepted_cargo_proc */
truelight@0: 	GetTileDesc_Clear,				/* get_tile_desc_proc */
truelight@0: 	GetTileTrackStatus_Clear,	/* get_tile_track_status_proc */
truelight@0: 	ClickTile_Clear,					/* click_tile_proc */
truelight@0: 	AnimateTile_Clear,				/* animate_tile_proc */
truelight@0: 	TileLoop_Clear,						/* tile_loop_clear */
truelight@0: 	ChangeTileOwner_Clear,		/* 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_Clear,			/* get_slope_tileh_proc */
truelight@0: };