tron@2186: /* $Id$ */
tron@2186: 
truelight@0: #include "stdafx.h"
Darkvater@1891: #include "openttd.h"
hackykid@2008: #include "table/sprites.h"
tron@507: #include "table/strings.h"
tron@2163: #include "functions.h"
tron@679: #include "map.h"
tron@1209: #include "tile.h"
truelight@0: #include "vehicle.h"
truelight@0: #include "viewport.h"
truelight@0: #include "command.h"
truelight@0: #include "player.h"
truelight@0: #include "town.h"
truelight@0: #include "gfx.h"
tron@337: #include "sound.h"
truelight@1313: #include "depot.h"
truelight@0: 
darkvater@22: /* When true, GetTrackStatus for roads will treat roads under reconstruction
darkvater@22:  * as normal roads instead of impassable. This is used when detecting whether
darkvater@22:  * a road can be removed. This is of course ugly, but I don't know a better
darkvater@22:  * solution just like that... */
truelight@0: static bool _road_special_gettrackstatus;
truelight@0: 
truelight@0: void RoadVehEnterDepot(Vehicle *v);
truelight@0: 
truelight@0: 
tron@1977: static bool HasTileRoadAt(TileIndex tile, int i)
truelight@0: {
truelight@0: 	int mask;
truelight@0: 	byte b;
truelight@0: 
tron@1214: 	switch (GetTileType(tile)) {
truelight@0: 	case MP_STREET:
tron@2049: 		b = _m[tile].m5;
truelight@201: 
truelight@0: 		if ((b & 0xF0) == 0) {
Darkvater@1927: 		} else if (IsLevelCrossing(tile)) {
truelight@0: 			b = (b&8)?5:10;
truelight@0: 		} else if ((b & 0xF0) == 0x20) {
truelight@0: 			return (~b & 3) == i;
truelight@0: 		} else
truelight@0: 			return false;
truelight@0: 		break;
truelight@201: 
truelight@0: 	case MP_STATION:
tron@2049: 		b = _m[tile].m5;
truelight@0: 		if (!IS_BYTE_INSIDE(b, 0x43, 0x43+8))
truelight@0: 			return false;
truelight@0: 		return ((~(b - 0x43) & 3) == i);
truelight@0: 
truelight@0: 	case MP_TUNNELBRIDGE:
truelight@0: 		mask = GetRoadBitsByTile(tile);
truelight@0: 		b = 10; if (mask & 1) break;
truelight@0: 		b = 5;  if (mask & 2) break;
truelight@0: 		return false;
truelight@0: 
truelight@0: 	default:
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	return HASBIT(b, i);
truelight@0: }
truelight@0: 
tron@1977: static bool CheckAllowRemoveRoad(TileIndex tile, uint br, bool *edge_road)
truelight@0: {
truelight@0: 	int blocks;
truelight@0: 	byte owner;
truelight@0: 	uint n;
truelight@0: 	*edge_road = true;
truelight@0: 
truelight@0: 	if (_game_mode == GM_EDITOR)
truelight@0: 		return true;
truelight@0: 
truelight@0: 	blocks = GetRoadBitsByTile(tile);
truelight@0: 	if (blocks == 0)
truelight@0: 		return true;
truelight@0: 
truelight@0: 	// Only do the special processing for actual players.
truelight@0: 	if (_current_player >= MAX_PLAYERS)
truelight@0: 		return true;
truelight@0: 
truelight@0: 	// A railway crossing has the road owner in the map3_lo byte.
Darkvater@1927: 	if (IsTileType(tile, MP_STREET) && IsLevelCrossing(tile)) {
tron@2049: 		owner = _m[tile].m3;
truelight@0: 	} else {
tron@1901: 		owner = GetTileOwner(tile);
truelight@0: 	}
truelight@0: 	// Only do the special processing if the road is owned
truelight@0: 	// by a town
truelight@0: 	if (owner != OWNER_TOWN) {
truelight@0: 		return owner == OWNER_NONE || CheckOwnership(owner);
truelight@0: 	}
truelight@0: 
truelight@0: 	if (_cheats.magic_bulldozer.value)
truelight@0: 		return true;
truelight@0: 
truelight@0: 	// Get a bitmask of which neighbouring roads has a tile
truelight@0: 	n = 0;
truelight@0: 	if (blocks&0x25 && HasTileRoadAt(TILE_ADDXY(tile,-1, 0), 1)) n |= 8;
truelight@0: 	if (blocks&0x2A && HasTileRoadAt(TILE_ADDXY(tile, 0, 1), 0)) n |= 4;
truelight@0: 	if (blocks&0x19 && HasTileRoadAt(TILE_ADDXY(tile, 1, 0), 3)) n |= 2;
truelight@0: 	if (blocks&0x16 && HasTileRoadAt(TILE_ADDXY(tile, 0,-1), 2)) n |= 1;
truelight@201: 
truelight@0: 	// If 0 or 1 bits are set in n, or if no bits that match the bits to remove,
truelight@0: 	// then allow it
truelight@0: 	if ((n & (n-1)) != 0 && (n & br) != 0) {
truelight@0: 		Town *t;
truelight@0: 		*edge_road = false;
truelight@0: 		// you can remove all kind of roads with extra dynamite
truelight@0: 		if (_patches.extra_dynamite)
truelight@0: 			return true;
truelight@0: 
Darkvater@1638: 		t = ClosestTownFromTile(tile, _patches.dist_local_authority);
Darkvater@1638: 
tron@534: 		SetDParam(0, t->index);
truelight@0: 		_error_message = STR_2009_LOCAL_AUTHORITY_REFUSES;
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	return true;
truelight@0: }
truelight@0: 
truelight@0: uint GetRoadBitsByTile(TileIndex tile)
truelight@0: {
truelight@159: 	uint32 r = GetTileTrackStatus(tile, TRANSPORT_ROAD);
truelight@0: 	return (byte)(r | (r >> 8));
truelight@0: }
truelight@0: 
Darkvater@1784: /** Delete a piece of road.
Darkvater@1784:  * @param x,y tile coordinates for road construction
Darkvater@1784:  * @param p1 road piece flags
Darkvater@1784:  * @param p2 unused
truelight@0:  */
truelight@0: int32 CmdRemoveRoad(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
Darkvater@1638: 	// cost for removing inner/edge -roads
Darkvater@1638: 	static const uint16 road_remove_cost[2] = {50, 18};
Darkvater@1638: 
truelight@0: 	TileInfo ti;
truelight@0: 	int32 cost;
Darkvater@1638: 	TileIndex tile;
Darkvater@2074: 	PlayerID owner;
truelight@0: 	Town *t;
Darkvater@1784: 	/* true if the roadpiece was always removeable,
Darkvater@1784: 	 * false if it was a center piece. Affects town ratings drop */
truelight@0: 	bool edge_road;
Darkvater@1784: 	byte pieces = (byte)p1;
truelight@201: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@0: 
Darkvater@1784: 	/* Road pieces are max 4 bitset values (NE, NW, SE, SW) */
Darkvater@1784: 	if (pieces >> 4) return CMD_ERROR;
Darkvater@1784: 
truelight@0: 	FindLandscapeHeight(&ti, x, y);
truelight@0: 	tile = ti.tile;
Darkvater@1638: 
Darkvater@2074: 	if (!IsTileType(tile, MP_STREET) && !IsTileType(tile, MP_TUNNELBRIDGE)) return CMD_ERROR;
Darkvater@2074: 
Darkvater@2074: 	// owner for railroad crossing is stored somewhere else
Darkvater@1638: 	// XXX - Fix this so for a given tiletype the owner of the type is in the same variable
Darkvater@2074: 	owner = IsLevelCrossing(tile) ? _m[tile].m3 : GetTileOwner(tile);
Darkvater@1638: 
Darkvater@1638: 	if (owner == OWNER_TOWN && _game_mode != GM_EDITOR) {
Darkvater@1638: 		if (IsTileType(tile, MP_TUNNELBRIDGE)) { // index of town is not saved for bridge (no space)
Darkvater@1638: 			t = ClosestTownFromTile(tile, _patches.dist_local_authority);
Darkvater@1638: 		} else
tron@2049: 			t = GetTown(_m[tile].m2);
Darkvater@1638: 	} else
truelight@1280: 		t = NULL;
truelight@201: 
truelight@0: 	// allow deleting road under bridge
truelight@0: 	if (ti.type != MP_TUNNELBRIDGE && !EnsureNoVehicle(tile))
truelight@0: 		return CMD_ERROR;
truelight@0: 
truelight@0: 	{
truelight@0: 		bool b;
truelight@0: 		_road_special_gettrackstatus = true;
Darkvater@1784: 		b = CheckAllowRemoveRoad(tile, pieces, &edge_road);
truelight@0: 		_road_special_gettrackstatus = false;
Darkvater@1784: 		if (!b) return CMD_ERROR;
truelight@0: 	}
truelight@0: 
truelight@0: 	if (ti.type == MP_TUNNELBRIDGE) {
tron@1041: 		if (!EnsureNoVehicleZ(tile, TilePixelHeight(tile)))
truelight@0: 			return CMD_ERROR;
truelight@0: 
truelight@0: 		if ((ti.map5 & 0xE9) == 0xE8) {
Darkvater@1784: 			if (pieces & 10) goto return_error;
truelight@0: 		} else if ((ti.map5 & 0xE9) == 0xE9) {
Darkvater@1784: 			if (pieces & 5) goto return_error;
truelight@0: 		} else
truelight@0: 			goto return_error;
truelight@0: 
truelight@0: 		cost = _price.remove_road * 2;
truelight@0: 
truelight@0: 		if (flags & DC_EXEC) {
Darkvater@1638: 			ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
tron@2049: 			_m[tile].m5 = ti.map5 & 0xC7;
tron@1902: 			SetTileOwner(tile, OWNER_NONE);
truelight@0: 			MarkTileDirtyByTile(tile);
truelight@0: 		}
truelight@0: 		return cost;
truelight@0: 	} else if (ti.type == MP_STREET) {
Darkvater@1638: 		// check if you're allowed to remove the street owned by a town
Darkvater@1638: 		// removal allowance depends on difficulty setting
Darkvater@1638: 		if (!CheckforTownRating(tile, flags, t, ROAD_REMOVE)) return CMD_ERROR;
Darkvater@1638: 
Darkvater@1638: 		// XXX - change cascading ifs to switch when doing rewrite
Darkvater@1638: 		if ((ti.map5 & 0xF0) == 0) { // normal road
Darkvater@1784: 			byte c = pieces, t2;
truelight@0: 
truelight@0: 			if (ti.tileh != 0  && (ti.map5 == 5 || ti.map5 == 10)) {
truelight@0: 				c |= (c & 0xC) >> 2;
truelight@0: 				c |= (c & 0x3) << 2;
truelight@0: 			}
truelight@0: 
truelight@0: 			// limit the bits to delete to the existing bits.
truelight@0: 			if ((c &= ti.map5) == 0) goto return_error;
truelight@201: 
truelight@0: 			// calculate the cost
truelight@0: 			t2 = c;
truelight@0: 			cost = 0;
truelight@0: 			do {
truelight@201: 				if (t2&1) cost += _price.remove_road;
truelight@0: 			} while(t2>>=1);
truelight@201: 
truelight@0: 			if (flags & DC_EXEC) {
Darkvater@1638: 				ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
truelight@0: 
tron@2049: 				_m[tile].m5 ^= c;
tron@2493: 				if (GB(_m[tile].m5, 0, 4) == 0) {
truelight@0: 					DoClearSquare(tile);
tron@2493: 				} else {
truelight@0: 					MarkTileDirtyByTile(tile);
tron@2493: 				}
truelight@0: 			}
truelight@201: 			return cost;
Darkvater@1638: 		} else if ((ti.map5 & 0xE0) == 0) { // railroad crossing
truelight@0: 			byte c;
truelight@0: 
truelight@0: 			if (!(ti.map5 & 8)) {
truelight@201: 				c = 2;
Darkvater@1784: 				if (pieces & 5) goto return_error;
truelight@0: 			} else {
truelight@0: 				c = 1;
Darkvater@1784: 				if (pieces & 10) goto return_error;
truelight@0: 			}
truelight@0: 
truelight@0: 			cost = _price.remove_road * 2;
truelight@0: 			if (flags & DC_EXEC) {
Darkvater@1638: 				ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
Darkvater@1638: 
truelight@201: 				ModifyTile(tile,
truelight@0: 					MP_SETTYPE(MP_RAILWAY) |
truelight@0: 					MP_MAP2_CLEAR | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5,
tron@2049: 					_m[tile].m4 & 0xF, /* map3_lo */
truelight@0: 					c											/* map5 */
truelight@0: 				);
truelight@0: 			}
truelight@0: 			return cost;
truelight@0: 		} else
truelight@0: 			goto return_error;
truelight@0: 
truelight@0: 	} else {
truelight@0: return_error:;
truelight@0: 		return_cmd_error(INVALID_STRING_ID);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: enum {
truelight@0: 	ROAD_NW = 1, // NW road track
truelight@0: 	ROAD_SW = 2, // SW road track
truelight@0: 	ROAD_SE = 4, // SE road track
truelight@0: 	ROAD_NE = 8, // NE road track
truelight@0: 	ROAD_ALL = (ROAD_NW | ROAD_SW | ROAD_SE | ROAD_NE)
truelight@0: };
truelight@201: 
dominik@13: static const byte _valid_tileh_slopes_road[3][15] = {
truelight@0: 	// set of normal ones
truelight@0: 	{
truelight@0: 		ROAD_ALL, 0, 0,
truelight@0: 		ROAD_SW | ROAD_NE, 0, 0,  // 3, 4, 5
truelight@0: 		ROAD_NW | ROAD_SE, 0, 0,
truelight@0: 		ROAD_NW | ROAD_SE, 0, 0,  // 9, 10, 11
truelight@0: 		ROAD_SW | ROAD_NE, 0, 0
truelight@201: 	},
truelight@0: 	// allowed road for an evenly raised platform
truelight@201: 	{
truelight@0: 		0,
truelight@0: 		ROAD_SW | ROAD_NW,
truelight@0: 		ROAD_SW | ROAD_SE,
truelight@0: 		ROAD_NW | ROAD_SE | ROAD_SW,
truelight@0: 
truelight@0: 		ROAD_SE | ROAD_NE, // 4
truelight@0: 		ROAD_ALL,
truelight@0: 		ROAD_SW | ROAD_NE | ROAD_SE,
truelight@0: 		ROAD_ALL,
truelight@0: 
truelight@0: 		ROAD_NW | ROAD_NE, // 8
truelight@0: 		ROAD_SW | ROAD_NE | ROAD_NW,
truelight@0: 		ROAD_ALL,
truelight@0: 		ROAD_ALL,
truelight@0: 
truelight@0: 		ROAD_NW | ROAD_SE | ROAD_NE, // 12
truelight@0: 		ROAD_ALL,
truelight@0: 		ROAD_ALL
dominik@13: 	},
dominik@13: 	// valid railway crossings on slopes
dominik@13: 	{
dominik@13: 		1, 0, 0, // 0, 1, 2
dominik@13: 		0, 0, 1, // 3, 4, 5
dominik@13: 		0, 1, 0, // 6, 7, 8
dominik@13: 		0, 1, 1, // 9, 10, 11
dominik@13: 		0, 1, 1, // 12, 13, 14
truelight@0: 	}
truelight@0: };
truelight@0: 
truelight@0: 
truelight@201: static uint32 CheckRoadSlope(int tileh, byte *pieces, byte existing)
truelight@0: {
celestar@2085: 	if (!IsSteepTileh(tileh)) {
truelight@0: 		byte road_bits = *pieces | existing;
truelight@0: 
truelight@0: 		// no special foundation
truelight@0: 		if ((~_valid_tileh_slopes_road[0][tileh] & road_bits) == 0) {
truelight@0: 			// force that all bits are set when we have slopes
truelight@0: 			if (tileh != 0) *pieces |= _valid_tileh_slopes_road[0][tileh];
truelight@0: 			return 0; // no extra cost
truelight@0: 		}
truelight@201: 
truelight@0: 		// foundation is used. Whole tile is leveled up
truelight@0: 		if ((~_valid_tileh_slopes_road[1][tileh] & road_bits) == 0) {
truelight@201: 			return existing ? 0 : _price.terraform;
truelight@0: 		}
truelight@0: 
truelight@0: 		// partly leveled up tile, only if there's no road on that tile
truelight@0: 		if ( !existing && (tileh == 1 || tileh == 2 || tileh == 4 || tileh == 8) ) {
truelight@0: 			// force full pieces.
truelight@0: 			*pieces |= (*pieces & 0xC) >> 2;
truelight@0: 			*pieces |= (*pieces & 0x3) << 2;
darkvater@72: 			return (*pieces == (ROAD_NE|ROAD_SW) || *pieces == (ROAD_SE|ROAD_NW)) ? _price.terraform : CMD_ERROR;
truelight@0: 		}
truelight@0: 	}
truelight@0: 	return CMD_ERROR;
truelight@0: }
truelight@0: 
Darkvater@1784: /** Build a piece of road.
Darkvater@1784:  * @param x,y tile coordinates for road construction
Darkvater@1784:  * @param p1 road piece flags
Darkvater@1784:  * @param p2 the town that is building the road (0 if not applicable)
truelight@0:  */
truelight@0: int32 CmdBuildRoad(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	TileInfo ti;
truelight@0: 	int32 cost;
truelight@0: 	byte pieces = (byte)p1, existing = 0;
Darkvater@1784: 	TileIndex tile;
truelight@201: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@0: 
Darkvater@1784: 	/* Road pieces are max 4 bitset values (NE, NW, SE, SW) and town can only be non-zero
Darkvater@1784: 	 * if a non-player is building the road */
Darkvater@1784: 	if ((pieces >> 4) || (_current_player < MAX_PLAYERS && p2 != 0) || !IsTownIndex(p2)) return CMD_ERROR;
Darkvater@1784: 
truelight@0: 	FindLandscapeHeight(&ti, x, y);
truelight@0: 	tile = ti.tile;
truelight@0: 
truelight@0: 	// allow building road under bridge
Darkvater@1784: 	if (ti.type != MP_TUNNELBRIDGE && !EnsureNoVehicle(tile)) return CMD_ERROR;
truelight@0: 
truelight@0: 	if (ti.type == MP_STREET) {
truelight@0: 		if (!(ti.map5 & 0xF0)) {
tron@2639: 			if ((pieces & (byte)ti.map5) == pieces)
truelight@0: 				return_cmd_error(STR_1007_ALREADY_BUILT);
truelight@0: 			existing = ti.map5;
truelight@0: 		} else {
truelight@0: 			if (!(ti.map5 & 0xE0) && pieces != ((ti.map5 & 8) ? 5 : 10))
truelight@0: 				return_cmd_error(STR_1007_ALREADY_BUILT);
truelight@0: 			goto do_clear;
truelight@0: 		}
truelight@0: 	} else if (ti.type == MP_RAILWAY) {
truelight@0: 		byte m5;
truelight@0: 
tron@2124: 		if (IsSteepTileh(ti.tileh)) // very steep tile
dominik@13: 				return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
dominik@13: 
dominik@13: 		if(!_valid_tileh_slopes_road[2][ti.tileh]) // prevent certain slopes
dominik@13: 				return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
dominik@13: 
truelight@0: 		if (ti.map5 == 2) {
truelight@0: 			if (pieces & 5) goto do_clear;
truelight@0: 			m5 = 0x10;
truelight@0: 		} else if (ti.map5 == 1) {
truelight@0: 			if (pieces & 10) goto do_clear;
truelight@0: 			m5 = 0x18;
truelight@0: 		} else
truelight@0: 			goto do_clear;
truelight@0: 
truelight@0: 		if (flags & DC_EXEC) {
truelight@0: 			ModifyTile(tile,
truelight@0: 				MP_SETTYPE(MP_STREET) |
celestar@1264: 				MP_MAP2 | MP_MAP3LO | MP_MAP3HI | MP_MAP5,
celestar@1264: 				p2,
truelight@0: 				_current_player, /* map3_lo */
tron@2049: 				_m[tile].m3 & 0xF, /* map3_hi */
truelight@0: 				m5 /* map5 */
truelight@0: 			);
truelight@0: 		}
truelight@0: 		return _price.build_road * 2;
truelight@0: 	} else if (ti.type == MP_TUNNELBRIDGE) {
truelight@0: 
truelight@0: 		/* check for flat land */
celestar@2085: 		if (IsSteepTileh(ti.tileh)) // very steep tile
truelight@0: 				return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
truelight@0: 
truelight@0: 		/* is this middle part of a bridge? */
truelight@0: 		if ((ti.map5 & 0xC0) != 0xC0)
truelight@0: 				goto do_clear;
truelight@0: 
truelight@0: 		/* only allow roads pertendicular to bridge */
peter1138@2865: 		if (((pieces & 5U) != 0) == ((ti.map5 & 0x01U) != 0))
truelight@0: 				goto do_clear;
truelight@0: 
truelight@0: 		/* check if clear land under bridge */
truelight@0: 		if ((ti.map5 & 0xF8) == 0xE8) 			/* road under bridge */
truelight@0: 				return_cmd_error(STR_1007_ALREADY_BUILT);
truelight@0: 		else if ((ti.map5 & 0xE0) == 0xE0) 	/* other transport route under bridge */
truelight@0: 				return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK);
truelight@0: 		else if ((ti.map5 & 0xF8) == 0xC8) 	/* water under bridge */
truelight@0: 				return_cmd_error(STR_3807_CAN_T_BUILD_ON_WATER);
truelight@0: 
truelight@0: 		/* all checked, can build road now! */
truelight@0: 		cost = _price.build_road * 2;
truelight@0: 		if (flags & DC_EXEC) {
truelight@0: 			ModifyTile(tile,
truelight@0: 				MP_MAPOWNER_CURRENT | MP_MAP5,
truelight@0: 				(ti.map5 & 0xC7) | 0x28 // map5
truelight@0: 			);
truelight@0: 		}
truelight@0: 		return cost;
truelight@0: 	} else {
truelight@0: do_clear:;
Darkvater@1784: 		if (CmdFailed(DoCommandByTile(tile, 0, 0, flags & ~DC_EXEC, CMD_LANDSCAPE_CLEAR)))
truelight@0: 			return CMD_ERROR;
truelight@0: 	}
truelight@0: 
truelight@0: 	cost = CheckRoadSlope(ti.tileh, &pieces, existing);
Darkvater@1784: 	if (CmdFailed(cost)) return_cmd_error(STR_1800_LAND_SLOPED_IN_WRONG_DIRECTION);
truelight@0: 
truelight@2422: 	if (cost && (!_patches.build_on_slopes || _is_old_ai_player))
truelight@0: 		return CMD_ERROR;
truelight@0: 
tron@2549: 	if (ti.type != MP_STREET || (ti.map5 & 0xF0) != 0) {
truelight@0: 		cost += DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
truelight@0: 	} else {
truelight@0: 		// Don't put the pieces that already exist
truelight@0: 		pieces &= ~ti.map5;
truelight@0: 	}
truelight@0: 
truelight@0: 	{
truelight@0: 		byte t = pieces;
truelight@0: 		while (t) {
truelight@0: 			if (t & 1) cost += _price.build_road;
truelight@0: 			t >>= 1;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
truelight@0: 		if (ti.type != MP_STREET) {
tron@1059: 			SetTileType(tile, MP_STREET);
tron@2049: 			_m[tile].m5 = 0;
tron@2049: 			_m[tile].m2 = p2;
tron@1902: 			SetTileOwner(tile, _current_player);
truelight@0: 		}
truelight@0: 
tron@2549: 		_m[tile].m5 |= pieces;
truelight@0: 
truelight@0: 		MarkTileDirtyByTile(tile);
truelight@0: 	}
truelight@0: 	return cost;
truelight@0: }
truelight@0: 
tron@1977: int32 DoConvertStreetRail(TileIndex tile, uint totype, bool exec)
truelight@0: {
truelight@0: 	// not a railroad crossing?
Darkvater@1927: 	if (!IsLevelCrossing(tile)) return CMD_ERROR;
truelight@0: 
truelight@0: 	// not owned by me?
truelight@0: 	if (!CheckTileOwnership(tile) || !EnsureNoVehicle(tile)) return CMD_ERROR;
truelight@0: 
truelight@0: 	// tile is already of requested type?
tron@2493: 	if (GB(_m[tile].m4, 0, 4) == totype) return CMD_ERROR;
truelight@0: 
truelight@0: 	if (exec) {
truelight@0: 		// change type.
tron@2493: 		SB(_m[tile].m4, 0, 4, totype);
truelight@0: 		MarkTileDirtyByTile(tile);
truelight@0: 	}
truelight@0: 
truelight@0: 	return _price.build_rail >> 1;
truelight@0: }
truelight@0: 
truelight@0: 
Darkvater@1784: /** Build a long piece of road.
Darkvater@1784:  * @param x,y end tile of drag
Darkvater@1784:  * @param p1 start tile of drag
Darkvater@1784:  * @param p2 various bitstuffed elements
Darkvater@1784:  * - p2 = (bit 0) - start tile starts in the 2nd half of tile (p2 & 1)
Darkvater@1784:  * - p2 = (bit 1) - end tile starts in the 2nd half of tile (p2 & 2)
Darkvater@1784:  * - p2 = (bit 2) - direction: 0 = along x-axis, 1 = along y-axis (p2 & 4)
Darkvater@1784:  */
truelight@0: int32 CmdBuildLongRoad(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
Darkvater@1784: 	TileIndex start_tile, end_tile, tile;
Darkvater@1784: 	int32 cost, ret;
truelight@0: 
darkvater@889: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
darkvater@889: 
tron@2934: 	if (p1 >= MapSize()) return CMD_ERROR;
Darkvater@1784: 
truelight@0: 	start_tile = p1;
tron@1980: 	end_tile = TileVirtXY(x, y);
truelight@0: 
Darkvater@1784: 	/* Only drag in X or Y direction dictated by the direction variable */
Darkvater@1784: 	if (!HASBIT(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
Darkvater@1784: 	if (HASBIT(p2, 2)  && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
Darkvater@1784: 
Darkvater@1784: 	/* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
Darkvater@1784: 	if (start_tile > end_tile || (start_tile == end_tile && HASBIT(p2, 0))) {
Darkvater@1784: 		TileIndex t = start_tile;
Darkvater@1784: 		start_tile = end_tile;
Darkvater@1784: 		end_tile = t;
truelight@0: 		p2 ^= IS_INT_INSIDE(p2&3, 1, 3) ? 3 : 0;
truelight@0: 	}
truelight@0: 
truelight@0: 	cost = 0;
truelight@0: 	tile = start_tile;
truelight@0: 	// Start tile is the small number.
Darkvater@1784: 	for (;;) {
Darkvater@1784: 		uint bits = HASBIT(p2, 2) ? ROAD_SE | ROAD_NW : ROAD_SW | ROAD_NE;
Darkvater@1784: 		if (tile == end_tile && !HASBIT(p2, 1)) bits &= ROAD_NW | ROAD_NE;
Darkvater@1784: 		if (tile == start_tile && HASBIT(p2, 0)) bits &= ROAD_SE | ROAD_SW;
truelight@0: 
Darkvater@1784: 		ret = DoCommandByTile(tile, bits, 0, flags, CMD_BUILD_ROAD);
Darkvater@1784: 		if (CmdFailed(ret)) {
Darkvater@1784: 			if (_error_message != STR_1007_ALREADY_BUILT) return CMD_ERROR;
tron@2549: 		} else {
truelight@0: 			cost += ret;
tron@2549: 		}
truelight@0: 
Darkvater@1784: 		if (tile == end_tile) break;
truelight@0: 
tron@1981: 		tile += HASBIT(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
truelight@0: 	}
truelight@0: 
Darkvater@1784: 	return (cost == 0) ? CMD_ERROR : cost;
truelight@0: }
truelight@0: 
Darkvater@1784: /** Remove a long piece of road.
Darkvater@1784:  * @param x,y end tile of drag
Darkvater@1784:  * @param p1 start tile of drag
Darkvater@1784:  * @param p2 various bitstuffed elements
Darkvater@1784:  * - p2 = (bit 0) - start tile starts in the 2nd half of tile (p2 & 1)
Darkvater@1784:  * - p2 = (bit 1) - end tile starts in the 2nd half of tile (p2 & 2)
Darkvater@1784:  * - p2 = (bit 2) - direction: 0 = along x-axis, 1 = along y-axis (p2 & 4)
Darkvater@1784:  */
truelight@0: int32 CmdRemoveLongRoad(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
Darkvater@1784: 	TileIndex start_tile, end_tile, tile;
Darkvater@1784: 	int32 cost, ret;
truelight@0: 
darkvater@889: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
darkvater@889: 
tron@2934: 	if (p1 >= MapSize()) return CMD_ERROR;
Darkvater@1784: 
truelight@0: 	start_tile = p1;
tron@1980: 	end_tile = TileVirtXY(x, y);
truelight@0: 
Darkvater@1784: 	/* Only drag in X or Y direction dictated by the direction variable */
Darkvater@1784: 	if (!HASBIT(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
Darkvater@1784: 	if (HASBIT(p2, 2)  && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
Darkvater@1784: 
Darkvater@1784: 	/* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
Darkvater@1784: 	if (start_tile > end_tile || (start_tile == end_tile && HASBIT(p2, 0))) {
Darkvater@1784: 		TileIndex t = start_tile;
Darkvater@1784: 		start_tile = end_tile;
Darkvater@1784: 		end_tile = t;
truelight@0: 		p2 ^= IS_INT_INSIDE(p2&3, 1, 3) ? 3 : 0;
truelight@0: 	}
truelight@0: 
truelight@0: 	cost = 0;
truelight@0: 	tile = start_tile;
truelight@0: 	// Start tile is the small number.
Darkvater@1784: 	for (;;) {
Darkvater@1784: 		uint bits = HASBIT(p2, 2) ? ROAD_SE | ROAD_NW : ROAD_SW | ROAD_NE;
Darkvater@1784: 		if (tile == end_tile && !HASBIT(p2, 1)) bits &= ROAD_NW | ROAD_NE;
Darkvater@1784: 		if (tile == start_tile && HASBIT(p2, 0)) bits &= ROAD_SE | ROAD_SW;
truelight@201: 
truelight@0: 		// try to remove the halves.
truelight@0: 		if (bits) {
truelight@0: 			ret = DoCommandByTile(tile, bits, 0, flags, CMD_REMOVE_ROAD);
Darkvater@1784: 			if (!CmdFailed(ret)) cost += ret;
truelight@0: 		}
truelight@0: 
Darkvater@1784: 		if (tile == end_tile) break;
truelight@0: 
tron@1981: 		tile += HASBIT(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
truelight@0: 	}
truelight@0: 
Darkvater@1784: 	return (cost == 0) ? CMD_ERROR : cost;
truelight@0: }
truelight@0: 
Darkvater@1784: /** Build a road depot.
Darkvater@1784:  * @param x,y tile coordinates where the depot will be built
Darkvater@1784:  * @param p1 depot direction (0 through 3), where 0 is NW, 1 is NE, etc.
Darkvater@1784:  * @param p2 unused
celestar@2085:  *
celestar@2085:  * @todo When checking for the tile slope,
celestar@2085:  * distingush between "Flat land required" and "land sloped in wrong direction"
truelight@0:  */
truelight@0: int32 CmdBuildRoadDepot(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	TileInfo ti;
truelight@0: 	int32 cost;
truelight@0: 	Depot *dep;
Darkvater@1784: 	TileIndex tile;
truelight@0: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@0: 
Darkvater@1785: 	if (p1 > 3) return CMD_ERROR; // check direction
Darkvater@1784: 
truelight@0: 	FindLandscapeHeight(&ti, x, y);
truelight@0: 
truelight@0: 	tile = ti.tile;
truelight@0: 
tron@2549: 	if (!EnsureNoVehicle(tile)) return CMD_ERROR;
truelight@0: 
tron@2549: 	if (ti.tileh != 0 && (
tron@2549: 				!_patches.build_on_slopes ||
tron@2549: 				IsSteepTileh(ti.tileh) ||
tron@2549: 				!CanBuildDepotByTileh(p1, ti.tileh)
tron@2549: 			)) {
tron@2549: 		return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
truelight@0: 	}
truelight@0: 
truelight@0: 	cost = DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
Darkvater@1784: 	if (CmdFailed(cost)) return CMD_ERROR;
truelight@0: 
truelight@0: 	dep = AllocateDepot();
tron@2549: 	if (dep == NULL) return CMD_ERROR;
truelight@0: 
truelight@201: 	if (flags & DC_EXEC) {
Darkvater@2425: 		if (IsLocalPlayer()) _last_built_road_depot_tile = tile;
truelight@0: 
truelight@0: 		dep->xy = tile;
truelight@0: 		dep->town_index = ClosestTownFromTile(tile, (uint)-1)->index;
truelight@0: 
truelight@0: 		ModifyTile(tile,
truelight@0: 			MP_SETTYPE(MP_STREET) |
truelight@0: 			MP_MAPOWNER_CURRENT | MP_MAP5,
truelight@0: 			(p1 | 0x20) /* map5 */
truelight@0: 		);
truelight@0: 
truelight@0: 	}
truelight@0: 	return cost + _price.build_road_depot;
truelight@0: }
truelight@0: 
tron@1979: static int32 RemoveRoadDepot(TileIndex tile, uint32 flags)
truelight@0: {
darkvater@149: 	if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER)
truelight@0: 		return CMD_ERROR;
truelight@0: 
tron@2639: 	if (!EnsureNoVehicle(tile)) return CMD_ERROR;
truelight@0: 
tron@2639: 	if (flags & DC_EXEC) DoDeleteDepot(tile);
truelight@0: 
truelight@0: 	return _price.remove_road_depot;
truelight@0: }
truelight@0: 
truelight@0: #define M(x) (1<<(x))
truelight@0: 
tron@1977: static int32 ClearTile_Road(TileIndex tile, byte flags)
tron@1977: {
truelight@0: 	int32 ret;
tron@2049: 	byte m5 = _m[tile].m5;
truelight@0: 
truelight@0: 	if ( (m5 & 0xF0) == 0) {
truelight@0: 		byte b = m5 & 0xF;
truelight@0: 
truelight@0: 		if (! ((1 << b) & (M(1)|M(2)|M(4)|M(8))) ) {
tron@1901: 			if ((!(flags & DC_AI_BUILDING) || !IsTileOwner(tile, OWNER_TOWN)) && flags & DC_AUTO)
truelight@0: 				return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
truelight@0: 		}
truelight@0: 		return DoCommandByTile(tile, b, 0, flags, CMD_REMOVE_ROAD);
truelight@0: 	} else if ( (m5 & 0xE0) == 0) {
truelight@0: 		if (flags & DC_AUTO)
truelight@0: 			return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
truelight@0: 
truelight@0: 		ret = DoCommandByTile(tile, (m5&8)?5:10, 0, flags, CMD_REMOVE_ROAD);
peter1138@2737: 		if (CmdFailed(ret)) return CMD_ERROR;
truelight@201: 
truelight@0: 		if (flags & DC_EXEC) {
truelight@0: 			DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
truelight@201: 		}
truelight@0: 
truelight@0: 		return ret;
truelight@0: 	} else {
truelight@0: 		if (flags & DC_AUTO)
truelight@0: 			return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
truelight@0: 		return RemoveRoadDepot(tile,flags);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: typedef struct DrawRoadTileStruct {
truelight@0: 	uint16 image;
truelight@0: 	byte subcoord_x;
truelight@0: 	byte subcoord_y;
truelight@0: } DrawRoadTileStruct;
truelight@0: 
truelight@0: typedef struct DrawRoadSeqStruct {
truelight@0: 	uint32 image;
truelight@0: 	byte subcoord_x;
truelight@0: 	byte subcoord_y;
truelight@0: 	byte width;
truelight@0: 	byte height;
truelight@0: } DrawRoadSeqStruct;
truelight@0: 
truelight@0: #include "table/road_land.h"
truelight@0: 
truelight@0: 
tron@2548: uint GetRoadFoundation(uint tileh, uint bits)
tron@2548: {
truelight@0: 	int i;
truelight@0: 	// normal level sloped building
truelight@0: 	if ((~_valid_tileh_slopes_road[1][tileh] & bits) == 0)
truelight@0: 		return tileh;
truelight@0: 
truelight@0: 	// inclined sloped building
truelight@201: 	if ( ((i=0, tileh == 1) || (i+=2, tileh == 2) || (i+=2, tileh == 4) || (i+=2, tileh == 8)) &&
truelight@0: 		((bits == (ROAD_SW | ROAD_NE)) || (i++, bits == (ROAD_NW | ROAD_SE))))
truelight@0: 		return i + 15;
truelight@0: 
dominik@13: 	// rail crossing
dominik@13: 	if ((bits & 0x10) && _valid_tileh_slopes_road[2][tileh])
dominik@13: 		return tileh;
dominik@13: 
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: const byte _road_sloped_sprites[14] = {
truelight@0: 	0,  0,  2,  0,
truelight@0: 	0,  1,  0,  0,
truelight@0: 	3,  0,  0,  0,
truelight@0: 	0,  0
truelight@0: };
truelight@0: 
peter1138@2471: /**
peter1138@2471:  * Draw ground sprite and road pieces
peter1138@2471:  * @param ti TileInfo
peter1138@2471:  * @param road RoadBits to draw
peter1138@2471:  * @param ground_type Ground type
peter1138@2471:  * @param snow Draw snow
peter1138@2471:  * @param flat Draw foundation
peter1138@2471:  */
tron@2817: static void DrawRoadBits(TileInfo *ti, byte road, byte ground_type, bool snow, bool flat)
peter1138@2471: {
peter1138@2471: 	const DrawRoadTileStruct *drts;
peter1138@2471: 	PalSpriteID image = 0;
peter1138@2471: 
peter1138@2471: 	if (ti->tileh != 0) {
peter1138@2471: 		int foundation;
peter1138@2471: 		if (flat) {
peter1138@2471: 			foundation = ti->tileh;
peter1138@2471: 		} else {
peter1138@2471: 			foundation = GetRoadFoundation(ti->tileh, road);
peter1138@2471: 		}
peter1138@2471: 
tron@2639: 		if (foundation != 0) DrawFoundation(ti, foundation);
peter1138@2471: 
peter1138@2471: 		// DrawFoundation() modifies ti.
peter1138@2471: 		// Default sloped sprites..
tron@2639: 		if (ti->tileh != 0) image = _road_sloped_sprites[ti->tileh - 1] + 0x53F;
peter1138@2471: 	}
peter1138@2471: 
tron@2639: 	if (image == 0) image = _road_tile_sprites_1[road];
peter1138@2471: 
tron@2639: 	if (ground_type == 0) image |= PALETTE_TO_BARE_LAND;
peter1138@2471: 
peter1138@2471: 	if (snow) {
peter1138@2471: 		image += 19;
peter1138@2471: 	} else if (ground_type > 1 && ground_type != 6) {
peter1138@2471: 		// Pavement tiles.
peter1138@2471: 		image -= 19;
peter1138@2471: 	}
peter1138@2471: 
peter1138@2471: 	DrawGroundSprite(image);
peter1138@2471: 
peter1138@2471: 	// Return if full detail is disabled, or we are zoomed fully out.
tron@2639: 	if (!(_display_opt & DO_FULL_DETAIL) || _cur_dpi->zoom == 2) return;
peter1138@2471: 
peter1138@2471: 	if (ground_type >= 6) {
peter1138@2471: 		// Road works
peter1138@2872: 		DrawGroundSprite(HASBIT(road, 3) ? SPR_EXCAVATION_X : SPR_EXCAVATION_Y);
peter1138@2471: 		return;
peter1138@2471: 	}
peter1138@2471: 
peter1138@2471: 	// Draw extra details.
peter1138@2471: 	drts = _road_display_table[ground_type][road];
peter1138@2471: 	while ((image = drts->image) != 0) {
peter1138@2471: 		int x = ti->x | drts->subcoord_x;
peter1138@2471: 		int y = ti->y | drts->subcoord_y;
peter1138@2471: 		byte z = ti->z;
tron@2639: 		if (ti->tileh != 0) z = GetSlopeZ(x, y);
peter1138@2471: 		AddSortableSpriteToDraw(image, x, y, 2, 2, 0x10, z);
peter1138@2471: 		drts++;
peter1138@2471: 	}
peter1138@2471: }
peter1138@2471: 
truelight@0: static void DrawTile_Road(TileInfo *ti)
truelight@0: {
peter1138@2471: 	PalSpriteID image;
truelight@817: 	uint16 m2;
truelight@0: 
truelight@0: 	if ( (ti->map5 & 0xF0) == 0) { // if it is a road the upper 4 bits are 0
peter1138@2471: 		DrawRoadBits(ti, GB(ti->map5, 0, 4), GB(_m[ti->tile].m4, 4, 3), HASBIT(_m[ti->tile].m4, 7), false);
dominik@13: 	} else if ( (ti->map5 & 0xE0) == 0) { // railroad crossing
dominik@13: 		int f = GetRoadFoundation(ti->tileh, ti->map5 & 0xF);
dominik@13: 		if (f) DrawFoundation(ti, f);
dominik@13: 
tron@2511: 		image = GetRailTypeInfo(GB(_m[ti->tile].m4, 0, 4))->base_sprites.crossing;
truelight@0: 
tron@2511: 		if (GB(ti->map5, 3, 1) == 0) image++; /* direction */
truelight@0: 
truelight@0: 		if ( (ti->map5 & 4) != 0)
truelight@0: 			image += 2;
truelight@0: 
tron@2049: 		if ( _m[ti->tile].m4 & 0x80) {
truelight@0: 			image += 8;
truelight@0: 		} else {
tron@2140: 			m2 = GB(_m[ti->tile].m4, 4, 3);
celestar@2187: 			if (m2 == 0) image |= PALETTE_TO_BARE_LAND;
truelight@0: 			if (m2 > 1) image += 4;
truelight@0: 		}
truelight@0: 
tron@2511: 		DrawGroundSprite(image);
truelight@0: 	} else {
truelight@0: 		uint32 ormod;
tron@2544: 		PlayerID player;
truelight@0: 		const DrawRoadSeqStruct *drss;
truelight@201: 
truelight@0: 		if (ti->tileh != 0) { DrawFoundation(ti, ti->tileh); }
truelight@0: 
celestar@2187: 		ormod = PALETTE_TO_GREY;	//was this a bug/problem?
tron@1901: 		player = GetTileOwner(ti->tile);
truelight@0: 		if (player < MAX_PLAYERS)
truelight@0: 			ormod = PLAYER_SPRITE_COLOR(player);
truelight@0: 
tron@1398: 		drss = _road_display_datas[ti->map5 & 0xF];
truelight@201: 
tron@1398: 		DrawGroundSprite(drss++->image);
truelight@0: 
tron@1398: 		for (; drss->image != 0; drss++) {
tron@1398: 			uint32 image = drss->image;
tron@1398: 
celestar@2187: 			if (image & PALETTE_MODIFIER_COLOR)
truelight@0: 				image |= ormod;
tron@497: 			if (_display_opt & DO_TRANS_BUILDINGS) // show transparent depots
celestar@2148: 				MAKE_TRANSPARENT(image);
truelight@0: 
truelight@201: 			AddSortableSpriteToDraw(image, ti->x | drss->subcoord_x,
truelight@0: 				ti->y | drss->subcoord_y, drss->width, drss->height, 0x14, ti->z);
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: void DrawRoadDepotSprite(int x, int y, int image)
truelight@0: {
truelight@0: 	uint32 ormod;
truelight@0: 	const DrawRoadSeqStruct *dtss;
truelight@0: 
truelight@0: 	ormod = PLAYER_SPRITE_COLOR(_local_player);
truelight@0: 
tron@1398: 	dtss = _road_display_datas[image];
truelight@0: 
tron@2639: 	x += 33;
tron@2639: 	y += 17;
truelight@0: 
tron@1398: 	DrawSprite(dtss++->image, x, y);
truelight@0: 
tron@1398: 	for(; dtss->image != 0; dtss++) {
truelight@0: 		Point pt = RemapCoords(dtss->subcoord_x, dtss->subcoord_y, 0);
truelight@201: 
truelight@0: 		image = dtss->image;
tron@2639: 		if (image & PALETTE_MODIFIER_COLOR) image |= ormod;
truelight@0: 
truelight@0: 		DrawSprite(image, x + pt.x, y + pt.y);
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@2537: static uint GetSlopeZ_Road(const TileInfo* ti)
truelight@0: {
truelight@0: 	uint z = ti->z;
truelight@0: 	int th = ti->tileh;
truelight@0: 
truelight@0: 	// check if it's a foundation
truelight@0: 	if (ti->tileh != 0) {
dominik@13: 		if ((ti->map5 & 0xE0) == 0) { /* road or crossing */
truelight@0: 			uint f = GetRoadFoundation(ti->tileh, ti->map5 & 0x3F);
truelight@0: 			if (f != 0) {
truelight@0: 				if (f < 15) {
truelight@0: 					// leveled foundation
truelight@0: 					return z + 8;
truelight@0: 				}
truelight@0: 				// inclined foundation
truelight@0: 				th = _inclined_tileh[f - 15];
truelight@0: 			}
truelight@0: 		} else if ((ti->map5 & 0xF0) == 0x20) {
truelight@0: 			// depot
truelight@0: 			return z + 8;
truelight@0: 		}
truelight@0: 		return GetPartialZ(ti->x&0xF, ti->y&0xF, th) + z;
truelight@0: 	}
dominik@39: 	return z; // normal Z if no slope
dominik@39: }
dominik@39: 
Darkvater@2436: static uint GetSlopeTileh_Road(const TileInfo *ti)
dominik@39: {
dominik@39: 	// check if it's a foundation
dominik@39: 	if (ti->tileh != 0) {
dominik@39: 		if ((ti->map5 & 0xE0) == 0) { /* road or crossing */
dominik@39: 			uint f = GetRoadFoundation(ti->tileh, ti->map5 & 0x3F);
dominik@39: 			if (f != 0) {
dominik@39: 				if (f < 15) {
dominik@39: 					// leveled foundation
dominik@39: 					return 0;
dominik@39: 				}
dominik@39: 				// inclined foundation
dominik@39: 				return _inclined_tileh[f - 15];
dominik@39: 			}
dominik@39: 		} else if ((ti->map5 & 0xF0) == 0x20) {
dominik@39: 			// depot
dominik@39: 			return 0;
dominik@39: 		}
dominik@39: 	}
dominik@39: 	return ti->tileh;
truelight@0: }
truelight@0: 
tron@1977: static void GetAcceptedCargo_Road(TileIndex tile, AcceptedCargo ac)
truelight@0: {
truelight@0: 	/* not used */
truelight@0: }
truelight@0: 
tron@1977: static void AnimateTile_Road(TileIndex tile)
truelight@0: {
tron@2639: 	if (IsLevelCrossing(tile)) MarkTileDirtyByTile(tile);
truelight@0: }
truelight@0: 
truelight@0: static const byte _town_road_types[5][2] = {
truelight@0: 	{1,1},
truelight@0: 	{2,2},
truelight@0: 	{2,2},
truelight@0: 	{5,5},
truelight@0: 	{3,2},
truelight@0: };
truelight@0: 
truelight@0: static const byte _town_road_types_2[5][2] = {
truelight@0: 	{1,1},
truelight@0: 	{2,2},
truelight@0: 	{3,2},
truelight@0: 	{3,2},
truelight@0: 	{3,2},
truelight@0: };
truelight@0: 
truelight@0: 
tron@1977: static void TileLoop_Road(TileIndex tile)
truelight@0: {
truelight@0: 	Town *t;
truelight@0: 	int grp;
truelight@201: 
truelight@0: 	if (_opt.landscape == LT_HILLY) {
truelight@0: 		// Fix snow style if the road is above the snowline
tron@2049: 		if ((_m[tile].m4 & 0x80) != ((GetTileZ(tile) > _opt.snow_line) ? 0x80 : 0x00)) {
tron@2049: 			_m[tile].m4 ^= 0x80;
truelight@0: 			MarkTileDirtyByTile(tile);
truelight@0: 		}
truelight@0: 	} else if (_opt.landscape == LT_DESERT) {
truelight@0: 		// Fix desert style
tron@2049: 		if (GetMapExtraBits(tile) == 1 && !(_m[tile].m4 & 0x80)) {
tron@2049: 			_m[tile].m4 |= 0x80;
truelight@0: 			MarkTileDirtyByTile(tile);
truelight@0: 		}
truelight@0: 	}
truelight@0: 
tron@2049: 	if (_m[tile].m5 & 0xE0)
truelight@0: 		return;
truelight@0: 
tron@2140: 	if (GB(_m[tile].m4, 4, 3) < 6) {
truelight@1281: 		t = ClosestTownFromTile(tile, (uint)-1);
truelight@1280: 
truelight@0: 		grp = 0;
truelight@0: 		if (t != NULL) {
truelight@0: 			grp = GetTownRadiusGroup(t, tile);
truelight@201: 
truelight@0: 			// Show an animation to indicate road work
truelight@201: 			if (t->road_build_months != 0 &&
tron@1245: 					!(DistanceManhattan(t->xy, tile) >= 8 && grp == 0) &&
tron@2049: 					(_m[tile].m5==5 || _m[tile].m5==10)) {
truelight@0: 				if (GetTileSlope(tile, NULL) == 0 && EnsureNoVehicle(tile) && CHANCE16(1,20)) {
Darkvater@9927: 					SB(_m[tile].m4, 4, 3, (GB(_m[tile].m4, 4, 3) <= 1 ? 6 : 7));
truelight@201: 
tron@541: 					SndPlayTileFx(SND_21_JACKHAMMER, tile);
truelight@0: 					CreateEffectVehicleAbove(
tron@926: 						TileX(tile) * 16 + 7,
tron@926: 						TileY(tile) * 16 + 7,
truelight@0: 						0,
tron@1359: 						EV_BULLDOZER);
truelight@0: 					MarkTileDirtyByTile(tile);
truelight@0: 					return;
truelight@0: 				}
truelight@0: 			}
truelight@0: 		}
truelight@0: 
truelight@0: 		{
truelight@0: 			const byte *p = (_opt.landscape == LT_CANDY) ? _town_road_types_2[grp] : _town_road_types[grp];
tron@2140: 			byte b = GB(_m[tile].m4, 4, 3);
truelight@0: 
truelight@0: 			if (b == p[0])
truelight@0: 				return;
truelight@201: 
truelight@0: 			if (b == p[1]) {
truelight@0: 				b = p[0];
truelight@0: 			} else if (b == 0) {
truelight@0: 				b = p[1];
truelight@0: 			} else {
truelight@0: 				b = 0;
truelight@0: 			}
tron@2493: 			SB(_m[tile].m4, 4, 3, b);
truelight@0: 			MarkTileDirtyByTile(tile);
truelight@0: 		}
truelight@0: 	} else {
truelight@0: 		// Handle road work
celestar@1264: 		//XXX undocumented
truelight@201: 
tron@2049: 		byte b = _m[tile].m4;
celestar@1264: 		//roadworks take place only
celestar@1264: 		//keep roadworks running for 16 loops
celestar@1264: 		//lower 4 bits of map3_hi store the counter now
celestar@1264: 		if ((b & 0xF) != 0xF) {
tron@2049: 			_m[tile].m4 = b + 1;
truelight@0: 			return;
truelight@0: 		}
celestar@1264: 		//roadworks finished
tron@2140: 		_m[tile].m4 = (GB(b, 4, 3) == 6 ? 1 : 2) << 4;
truelight@0: 		MarkTileDirtyByTile(tile);
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1977: void ShowRoadDepotWindow(TileIndex tile);
truelight@0: 
tron@1977: static void ClickTile_Road(TileIndex tile)
truelight@0: {
tron@2493: 	if (GB(_m[tile].m5, 4, 4) == 2) ShowRoadDepotWindow(tile);
truelight@0: }
truelight@0: 
truelight@0: static const byte _road_trackbits[16] = {
truelight@0: 	0x0, 0x0, 0x0, 0x10, 0x0, 0x2, 0x8, 0x1A, 0x0, 0x4, 0x1, 0x15, 0x20, 0x26, 0x29, 0x3F,
truelight@0: };
truelight@0: 
tron@1977: static uint32 GetTileTrackStatus_Road(TileIndex tile, TransportType mode)
tron@1977: {
truelight@159: 	if (mode == TRANSPORT_RAIL) {
Darkvater@1927: 		if (!IsLevelCrossing(tile))
truelight@0: 			return 0;
tron@2049: 		return _m[tile].m5 & 8 ? 0x101 : 0x202;
truelight@159: 	} else if  (mode == TRANSPORT_ROAD) {
tron@2049: 		byte b = _m[tile].m5;
truelight@0: 		if ((b & 0xF0) == 0) {
truelight@159: 			/* Ordinary road */
tron@2140: 			if (!_road_special_gettrackstatus && GB(_m[tile].m4, 4, 3) >= 6)
truelight@0: 				return 0;
truelight@0: 			return _road_trackbits[b&0xF] * 0x101;
Darkvater@1927: 		} else if (IsLevelCrossing(tile)) {
truelight@159: 			/* Crossing */
truelight@0: 			uint32 r = 0x101;
truelight@0: 			if (b&8) r <<= 1;
truelight@201: 
truelight@0: 			if (b&4) {
truelight@0: 				r *= 0x10001;
truelight@201: 			}
truelight@0: 			return r;
truelight@0: 		}
truelight@0: 	}
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: static const StringID _road_tile_strings[] = {
truelight@0: 	STR_1818_ROAD_RAIL_LEVEL_CROSSING,
truelight@0: 	STR_1817_ROAD_VEHICLE_DEPOT,
truelight@0: 
truelight@0: 	STR_1814_ROAD,
truelight@0: 	STR_1814_ROAD,
truelight@0: 	STR_1814_ROAD,
truelight@0: 	STR_1815_ROAD_WITH_STREETLIGHTS,
truelight@0: 	STR_1814_ROAD,
truelight@0: 	STR_1816_TREE_LINED_ROAD,
truelight@0: 	STR_1814_ROAD,
truelight@0: 	STR_1814_ROAD,
truelight@0: };
truelight@0: 
tron@1977: static void GetTileDesc_Road(TileIndex tile, TileDesc *td)
truelight@0: {
tron@2049: 	int i = (_m[tile].m5 >> 4);
truelight@0: 	if (i == 0)
tron@2140: 		i = GB(_m[tile].m4, 4, 3) + 3;
truelight@0: 	td->str = _road_tile_strings[i - 1];
tron@1901: 	td->owner = GetTileOwner(tile);
truelight@0: }
truelight@0: 
truelight@0: static const byte _roadveh_enter_depot_unk0[4] = {
truelight@0: 	8, 9, 0, 1
truelight@0: };
truelight@0: 
tron@1977: static uint32 VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y)
truelight@0: {
Darkvater@1927: 	if (IsLevelCrossing(tile)) {
tron@2493: 		if (v->type == VEH_Train && GB(_m[tile].m5, 2, 1) == 0) {
truelight@0: 			/* train crossing a road */
tron@541: 			SndPlayVehicleFx(SND_0E_LEVEL_CROSSING, v);
tron@2493: 			SB(_m[tile].m5, 2, 1, 1);
truelight@0: 			MarkTileDirtyByTile(tile);
truelight@0: 		}
tron@2493: 	} else if (GB(_m[tile].m5, 4, 4) == 2) {
truelight@0: 		if (v->type == VEH_Road && v->u.road.frame == 11) {
tron@2493: 			if (_roadveh_enter_depot_unk0[GB(_m[tile].m5, 0, 2)] == v->u.road.state) {
truelight@0: 				RoadVehEnterDepot(v);
truelight@0: 				return 4;
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
tron@1977: static void VehicleLeave_Road(Vehicle *v, TileIndex tile, int x, int y)
truelight@0: {
Darkvater@1927: 	if (IsLevelCrossing(tile) && v->type == VEH_Train && v->next == NULL) {
Darkvater@1927: 		// Turn off level crossing lights
tron@2493: 		SB(_m[tile].m5, 2, 1, 0);
truelight@0: 		MarkTileDirtyByTile(tile);
truelight@0: 	}
truelight@0: }
truelight@0: 
Darkvater@2436: static void ChangeTileOwner_Road(TileIndex tile, PlayerID old_player, PlayerID new_player)
truelight@0: {
truelight@0: 	// road/rail crossing where the road is owned by the current player?
tron@2049: 	if (old_player == _m[tile].m3 && IsLevelCrossing(tile)) {
tron@2469: 		_m[tile].m3 = (new_player == OWNER_SPECTATOR) ? OWNER_NONE : new_player;
truelight@0: 	}
truelight@0: 
tron@1901: 	if (!IsTileOwner(tile, old_player)) return;
truelight@0: 
tron@2502: 	if (new_player != OWNER_SPECTATOR) {
tron@1902: 		SetTileOwner(tile, new_player);
truelight@0: 	}	else {
tron@2493: 		if (GB(_m[tile].m5, 4, 4) == 0) {
tron@1902: 			SetTileOwner(tile, OWNER_NONE);
Darkvater@1927: 		} else if (IsLevelCrossing(tile)) {
tron@2049: 			_m[tile].m5 = (_m[tile].m5&8) ? 0x5 : 0xA;
tron@2049: 			SetTileOwner(tile, _m[tile].m3);
tron@2049: 			_m[tile].m3 = 0;
tron@2049: 			_m[tile].m4 &= 0x80;
truelight@0: 		} else {
truelight@0: 			DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1093: void InitializeRoad(void)
truelight@0: {
truelight@0: 	_last_built_road_depot_tile = 0;
truelight@0: }
truelight@0: 
truelight@0: const TileTypeProcs _tile_type_road_procs = {
truelight@0: 	DrawTile_Road,						/* draw_tile_proc */
truelight@0: 	GetSlopeZ_Road,						/* get_slope_z_proc */
truelight@0: 	ClearTile_Road,						/* clear_tile_proc */
truelight@0: 	GetAcceptedCargo_Road,		/* get_accepted_cargo_proc */
truelight@0: 	GetTileDesc_Road,					/* get_tile_desc_proc */
truelight@0: 	GetTileTrackStatus_Road,	/* get_tile_track_status_proc */
truelight@0: 	ClickTile_Road,						/* click_tile_proc */
truelight@0: 	AnimateTile_Road,					/* animate_tile_proc */
truelight@0: 	TileLoop_Road,						/* tile_loop_clear */
truelight@0: 	ChangeTileOwner_Road,			/* change_tile_owner_clear */
truelight@0: 	NULL,											/* get_produced_cargo_proc */
truelight@0: 	VehicleEnter_Road,				/* vehicle_enter_tile_proc */
truelight@0: 	VehicleLeave_Road,				/* vehicle_leave_tile_proc */
dominik@39: 	GetSlopeTileh_Road,				/* get_slope_tileh_proc */
truelight@0: };