tron@2186: /* $Id$ */
tron@2186: 
belugas@6393: /** @file road_cmd.cpp */
belugas@6393: 
truelight@0: #include "stdafx.h"
Darkvater@1891: #include "openttd.h"
tron@3189: #include "bridge_map.h"
rubidium@6160: #include "bridge.h"
tron@6134: #include "cmd_helper.h"
tron@3101: #include "rail_map.h"
tron@3144: #include "road_map.h"
tron@4232: #include "sprite.h"
hackykid@2008: #include "table/sprites.h"
tron@507: #include "table/strings.h"
rubidium@7266: #include "strings.h"
tron@2163: #include "functions.h"
maedhros@6857: #include "window.h"
tron@679: #include "map.h"
maedhros@6343: #include "landscape.h"
tron@1209: #include "tile.h"
tron@3319: #include "town_map.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"
KUDr@3900: #include "yapf/yapf.h"
truelight@1313: #include "depot.h"
maedhros@6541: #include "newgrf.h"
rubidium@6679: #include "station_map.h"
rubidium@6679: #include "tunnel_map.h"
rubidium@7389: #include "misc/autoptr.hpp"
rubidium@7582: #include "autoslope.h"
rubidium@7582: 
rubidium@7582: #define M(x) (1 << (x))
rubidium@7582: /* Level crossings may only be built on these slopes */
rubidium@7582: static const uint32 VALID_LEVEL_CROSSING_SLOPES = (M(SLOPE_SEN) | M(SLOPE_ENW) | M(SLOPE_NWS) | M(SLOPE_NS) | M(SLOPE_WSE) | M(SLOPE_EW) | M(SLOPE_FLAT));
rubidium@7582: #undef M
truelight@0: 
rubidium@6661: bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, Owner owner, bool *edge_road, RoadType rt)
truelight@0: {
tron@3149: 	RoadBits present;
tron@3149: 	RoadBits n;
truelight@0: 	*edge_road = true;
truelight@0: 
rubidium@6661: 	if (_game_mode == GM_EDITOR || remove == ROAD_NONE) return true;
truelight@0: 
rubidium@6751: 	/* Water can always flood and towns can always remove "normal" road pieces.
rubidium@6751: 	 * Towns are not be allowed to remove non "normal" road pieces, like tram
rubidium@6751: 	 * tracks as that would result in trams that cannot turn. */
rubidium@6751: 	if (_current_player == OWNER_WATER ||
rubidium@6751: 			(rt == ROADTYPE_ROAD && !IsValidPlayer(_current_player))) return true;
truelight@0: 
belugas@6393: 	/* Only do the special processing if the road is owned
belugas@6393: 	 * by a town */
Darkvater@4849: 	if (owner != OWNER_TOWN) return (owner == OWNER_NONE) || CheckOwnership(owner);
truelight@0: 
tron@3017: 	if (_cheats.magic_bulldozer.value) return true;
truelight@0: 
belugas@6393: 	/* Get a bitmask of which neighbouring roads has a tile */
rubidium@5587: 	n = ROAD_NONE;
rubidium@6661: 	present = GetAnyRoadBits(tile, rt);
rubidium@6661: 	if (present & ROAD_NE && GetAnyRoadBits(TILE_ADDXY(tile, -1,  0), rt) & ROAD_SW) n |= ROAD_NE;
rubidium@6661: 	if (present & ROAD_SE && GetAnyRoadBits(TILE_ADDXY(tile,  0,  1), rt) & ROAD_NW) n |= ROAD_SE;
rubidium@6661: 	if (present & ROAD_SW && GetAnyRoadBits(TILE_ADDXY(tile,  1,  0), rt) & ROAD_NE) n |= ROAD_SW;
rubidium@6661: 	if (present & ROAD_NW && GetAnyRoadBits(TILE_ADDXY(tile,  0, -1), rt) & ROAD_SE) n |= ROAD_NW;
truelight@201: 
belugas@6393: 	/* If 0 or 1 bits are set in n, or if no bits that match the bits to remove,
belugas@6393: 	 * then allow it */
tron@3149: 	if ((n & (n - 1)) != 0 && (n & remove) != 0) {
truelight@0: 		Town *t;
truelight@0: 		*edge_road = false;
belugas@6393: 		/* you can remove all kind of roads with extra dynamite */
tron@3017: 		if (_patches.extra_dynamite) return true;
truelight@0: 
rubidium@6256: 		t = ClosestTownFromTile(tile, (uint)-1);
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: 
rubidium@6661: static bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, bool *edge_road, RoadType rt)
rubidium@6116: {
rubidium@6661: 	return CheckAllowRemoveRoad(tile, remove, GetRoadOwner(tile, rt), edge_road, rt);
rubidium@6116: }
truelight@0: 
Darkvater@1784: /** Delete a piece of road.
tron@3491:  * @param tile tile where to remove road from
belugas@6483:  * @param flags operation to perform
tron@6134:  * @param p1 bit 0..3 road pieces to remove (RoadBits)
rubidium@6661:  *           bit 4..5 road type
rubidium@6814:  *           bit    6 ignore the fact that the tram track has not been removed
rubidium@6814:  *                    yet when removing the road bits when not actually doing
rubidium@6814:  *                    it. Makes it possible to test whether the road bits can
rubidium@6814:  *                    be removed from a level crossing without physically
rubidium@6814:  *                    removing the tram bits before the test.
Darkvater@1784:  * @param p2 unused
truelight@0:  */
rubidium@6943: CommandCost CmdRemoveRoad(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
belugas@6393: 	/* cost for removing inner/edge -roads */
Darkvater@1638: 	static const uint16 road_remove_cost[2] = {50, 18};
Darkvater@1638: 
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;
truelight@201: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@0: 
rubidium@6661: 	RoadType rt = (RoadType)GB(p1, 4, 2);
rubidium@6679: 	if (!IsValidRoadType(rt)) return CMD_ERROR;
Darkvater@2074: 
rubidium@7223: 	Town *t = NULL;
rubidium@6679: 	switch (GetTileType(tile)) {
rubidium@7370: 		case MP_ROAD:
rubidium@7223: 			if (_game_mode != GM_EDITOR && GetRoadOwner(tile, rt) == OWNER_TOWN) t = GetTownByTile(tile);
rubidium@6679: 			break;
rubidium@6679: 
rubidium@6679: 		case MP_STATION:
rubidium@6679: 			if (!IsDriveThroughStopTile(tile)) return CMD_ERROR;
rubidium@6679: 			break;
rubidium@6679: 
rubidium@6679: 		case MP_TUNNELBRIDGE:
rubidium@6679: 			if ((IsTunnel(tile) && GetTunnelTransportType(tile) != TRANSPORT_ROAD) ||
rubidium@6679: 					(IsBridge(tile) && GetBridgeTransportType(tile) != TRANSPORT_ROAD)) return CMD_ERROR;
rubidium@6679: 			break;
rubidium@6679: 
rubidium@6679: 		default:
rubidium@6679: 			return CMD_ERROR;
rubidium@6679: 	}
Darkvater@1638: 
tron@6134: 	RoadBits pieces = Extract<RoadBits, 0>(p1);
rubidium@6661: 	RoadTypes rts = GetRoadTypes(tile);
rubidium@6661: 	/* The tile doesn't have the given road type */
rubidium@6661: 	if (!HASBIT(rts, rt)) return CMD_ERROR;
tron@6134: 
rubidium@6661: 	if (!CheckAllowRemoveRoad(tile, pieces, &edge_road, rt)) return CMD_ERROR;
truelight@0: 
belugas@6406: 	if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
celestar@3933: 
belugas@6393: 	/* check if you're allowed to remove the street owned by a town
belugas@6393: 	 * removal allowance depends on difficulty setting */
celestar@5385: 	if (!CheckforTownRating(flags, t, ROAD_REMOVE)) return CMD_ERROR;
celestar@5385: 
rubidium@7370: 	if (!IsTileType(tile, MP_ROAD)) {
rubidium@6679: 		/* If it's the last roadtype, just clear the whole tile */
rubidium@6679: 		if (rts == RoadTypeToRoadTypes(rt)) return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
rubidium@6679: 
rubidium@6943: 		CommandCost cost;
rubidium@6679: 		if (IsTileType(tile, MP_TUNNELBRIDGE)) {
rubidium@6679: 			TileIndex other_end = IsTunnel(tile) ? GetOtherTunnelEnd(tile) : GetOtherBridgeEnd(tile);
rubidium@6679: 			/* Pay for *every* tile of the bridge or tunnel */
rubidium@6950: 			cost.AddCost((DistanceManhattan(IsTunnel(tile) ? GetOtherTunnelEnd(tile) : GetOtherBridgeEnd(tile), tile) + 1) * _price.remove_road);
rubidium@6679: 			if (flags & DC_EXEC) {
rubidium@6679: 				SetRoadTypes(other_end, GetRoadTypes(other_end) & ~RoadTypeToRoadTypes(rt));
rubidium@6679: 				SetRoadTypes(tile, GetRoadTypes(tile) & ~RoadTypeToRoadTypes(rt));
rubidium@6679: 
rubidium@6679: 				/* Mark tiles diry that have been repaved */
rubidium@6714: 				MarkTileDirtyByTile(tile);
rubidium@6679: 				MarkTileDirtyByTile(other_end);
rubidium@6679: 				if (IsBridge(tile)) {
rubidium@6679: 					TileIndexDiff delta = TileOffsByDiagDir(GetBridgeRampDirection(tile));
rubidium@6679: 
rubidium@6713: 					for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t);
rubidium@6679: 				}
rubidium@6679: 			}
rubidium@6679: 		} else {
rubidium@6950: 			cost.AddCost(_price.remove_road);
rubidium@6679: 			if (flags & DC_EXEC) {
rubidium@6679: 				SetRoadTypes(tile, GetRoadTypes(tile) & ~RoadTypeToRoadTypes(rt));
rubidium@6679: 				MarkTileDirtyByTile(tile);
rubidium@6679: 			}
rubidium@6679: 		}
rubidium@6950: 		return CommandCost(cost);
rubidium@6679: 	}
rubidium@6679: 
celestar@5385: 	switch (GetRoadTileType(tile)) {
celestar@5385: 		case ROAD_TILE_NORMAL: {
rubidium@6661: 			RoadBits present = GetRoadBits(tile, rt);
celestar@5385: 			RoadBits c = pieces;
celestar@5385: 
celestar@5385: 			if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
celestar@5385: 
celestar@5385: 			if (GetTileSlope(tile, NULL) != SLOPE_FLAT  &&
celestar@5385: 					(present == ROAD_Y || present == ROAD_X)) {
rubidium@5587: 				c |= (RoadBits)((c & 0xC) >> 2);
rubidium@5587: 				c |= (RoadBits)((c & 0x3) << 2);
celestar@5385: 			}
celestar@5385: 
belugas@6393: 			/* limit the bits to delete to the existing bits. */
celestar@5385: 			c &= present;
rubidium@6662: 			if (c == ROAD_NONE) return CMD_ERROR;
celestar@5385: 
celestar@5385: 			if (flags & DC_EXEC) {
celestar@5385: 				ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
celestar@5385: 
celestar@5385: 				present ^= c;
rubidium@6662: 				if (present == ROAD_NONE) {
rubidium@6661: 					RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt));
rubidium@6661: 					if (rts == ROADTYPES_NONE) {
rubidium@7536: 						/* Includes MarkTileDirtyByTile() */
rubidium@6661: 						DoClearSquare(tile);
rubidium@6661: 					} else {
rubidium@6662: 						SetRoadBits(tile, ROAD_NONE, rt);
rubidium@6661: 						SetRoadTypes(tile, rts);
rubidium@7536: 						MarkTileDirtyByTile(tile);
rubidium@6661: 					}
celestar@5385: 				} else {
rubidium@6764: 					/* When bits are removed, you *always* end up with something that
rubidium@6764: 					 * is not a complete straight road tile. However, trams do not have
rubidium@6764: 					 * onewayness, so they cannot remove it either. */
rubidium@6764: 					if (rt != ROADTYPE_TRAM) SetDisallowedRoadDirections(tile, DRD_NONE);
rubidium@6661: 					SetRoadBits(tile, present, rt);
celestar@5385: 					MarkTileDirtyByTile(tile);
celestar@5385: 				}
celestar@5385: 			}
rubidium@7516: 			return CommandCost(COUNTBITS(c) * _price.remove_road);
celestar@5385: 		}
celestar@5385: 
celestar@5385: 		case ROAD_TILE_CROSSING: {
celestar@5385: 			if (pieces & ComplementRoadBits(GetCrossingRoadBits(tile))) {
tron@3176: 				return CMD_ERROR;
truelight@0: 			}
truelight@0: 
rubidium@6697: 			/* Don't allow road to be removed from the crossing when there is tram;
rubidium@6697: 			 * we can't draw the crossing without trambits ;) */
rubidium@6814: 			if (rt == ROADTYPE_ROAD && HASBIT(GetRoadTypes(tile), ROADTYPE_TRAM) && ((flags & DC_EXEC) || !HASBIT(p1, 6))) return CMD_ERROR;
rubidium@6697: 
truelight@0: 			if (flags & DC_EXEC) {
rubidium@6661: 				if (rt == ROADTYPE_ROAD) {
rubidium@6661: 					ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
rubidium@6661: 				}
celestar@5385: 
rubidium@6661: 				RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt));
rubidium@6661: 				if (rts == ROADTYPES_NONE) {
rubidium@6661: 					MakeRailNormal(tile, GetTileOwner(tile), GetCrossingRailBits(tile), GetRailType(tile));
rubidium@6661: 				} else {
rubidium@6661: 					SetRoadTypes(tile, rts);
rubidium@6661: 				}
tron@3060: 				MarkTileDirtyByTile(tile);
rubidium@5587: 				YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetTrackBits(tile)));
truelight@0: 			}
rubidium@6950: 			return CommandCost(_price.remove_road * 2);
celestar@5385: 		}
tron@3977: 
celestar@5385: 		default:
celestar@5385: 		case ROAD_TILE_DEPOT:
celestar@5385: 			return CMD_ERROR;
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: 
tron@3104: static const RoadBits _valid_tileh_slopes_road[][15] = {
belugas@6393: 	/* set of normal ones */
truelight@0: 	{
rubidium@7641: 		ROAD_ALL,  // SLOPE_FLAT
rubidium@7641: 		ROAD_NONE, // SLOPE_W
rubidium@7641: 		ROAD_NONE, // SLOPE_S
rubidium@7641: 
rubidium@7641: 		ROAD_X,    // SLOPE_SW
rubidium@7641: 		ROAD_NONE, // SLOPE_E
rubidium@7641: 		ROAD_NONE, // SLOPE_EW
rubidium@7641: 
rubidium@7641: 		ROAD_Y,    // SLOPE_SE
rubidium@7641: 		ROAD_NONE, // SLOPE_WSE
rubidium@7641: 		ROAD_NONE, // SLOPE_N
rubidium@7641: 
rubidium@7641: 		ROAD_Y,    // SLOPE_NW
rubidium@7641: 		ROAD_NONE, // SLOPE_NS
rubidium@7641: 		ROAD_NONE, // SLOPE_NE
rubidium@7641: 
rubidium@7641: 		ROAD_X,    // SLOPE_ENW
rubidium@7641: 		ROAD_NONE, // SLOPE_SEN
rubidium@7641: 		ROAD_NONE  // SLOPE_ELEVATED
truelight@201: 	},
belugas@6393: 	/* allowed road for an evenly raised platform */
truelight@201: 	{
rubidium@7641: 		ROAD_NONE,         // SLOPE_FLAT
rubidium@7641: 		ROAD_SW | ROAD_NW, // SLOPE_W
rubidium@7641: 		ROAD_SW | ROAD_SE, // SLOPE_S
truelight@0: 
rubidium@7641: 		ROAD_Y  | ROAD_SW, // SLOPE_SW
rubidium@7641: 		ROAD_SE | ROAD_NE, // SLOPE_E
rubidium@7641: 		ROAD_ALL,          // SLOPE_EW
truelight@0: 
rubidium@7641: 		ROAD_X  | ROAD_SE, // SLOPE_SE
rubidium@7641: 		ROAD_ALL,          // SLOPE_WSE
rubidium@7641: 		ROAD_NW | ROAD_NE, // SLOPE_N
truelight@0: 
rubidium@7641: 		ROAD_X  | ROAD_NW, // SLOPE_NW
rubidium@7641: 		ROAD_ALL,          // SLOPE_NS
rubidium@7641: 		ROAD_ALL,          // SLOPE_NE
rubidium@7641: 
rubidium@7641: 		ROAD_Y  | ROAD_NE, // SLOPE_ENW
rubidium@7641: 		ROAD_ALL,          // SLOPE_SEN
rubidium@7641: 		ROAD_ALL           // SLOPE_ELEVATED
rubidium@7641: 	},
rubidium@7641: 	/* Singe bits on slopes */
rubidium@7641: 	{
rubidium@7641: 		ROAD_ALL,          // SLOPE_FLAT
rubidium@7641: 		ROAD_NE | ROAD_SE, // SLOPE_W
rubidium@7641: 		ROAD_NE | ROAD_NW, // SLOPE_S
rubidium@7641: 
rubidium@7641: 		ROAD_NE,           // SLOPE_SW
rubidium@7641: 		ROAD_NW | ROAD_SW, // SLOPE_E
rubidium@7641: 		ROAD_ALL,          // SLOPE_EW
rubidium@7641: 
rubidium@7641: 		ROAD_NW,           // SLOPE_SE
rubidium@7641: 		ROAD_ALL,          // SLOPE_WSE
rubidium@7641: 		ROAD_SE | ROAD_SW, // SLOPE_N
rubidium@7641: 
rubidium@7641: 		ROAD_SE,           // SLOPE_NW
rubidium@7641: 		ROAD_ALL,          // SLOPE_NS
rubidium@7641: 		ROAD_ALL,          // SLOPE_NE
rubidium@7641: 
rubidium@7641: 		ROAD_SW,           // SLOPE_ENW
rubidium@7641: 		ROAD_ALL,          // SLOPE_SEN
rubidium@7641: 		ROAD_ALL,          // SLOPE_ELEVATED
dominik@13: 	},
truelight@0: };
truelight@0: 
rubidium@7641: /**
rubidium@7641:  * Calculate the costs for roads on slopes
rubidium@7641:  *  Aside modify the RoadBits to fit on the slopes
rubidium@7641:  *
rubidium@7641:  * @note The RoadBits are modified too!
rubidium@7641:  * @param tileh The current slope
rubidium@7641:  * @param pieces The RoadBits we want to add
rubidium@7641:  * @param existing The existent RoadBits
rubidium@7641:  * @return The costs for these RoadBits on this slope
rubidium@7641:  */
rubidium@6943: static CommandCost CheckRoadSlope(Slope tileh, RoadBits* pieces, RoadBits existing)
truelight@0: {
tron@4246: 	if (IsSteepSlope(tileh)) {
rubidium@7641: 		/* Force straight roads. */
rubidium@7641: 		*pieces |= MirrorRoadBits(*pieces);
rubidium@7332: 
rubidium@7641: 		if (existing == ROAD_NONE || existing == *pieces) {
tron@4246: 			if (*pieces == ROAD_X || *pieces == ROAD_Y) return _price.terraform;
tron@4246: 		}
tron@4246: 		return CMD_ERROR;
tron@4246: 	}
rubidium@7641: 
rubidium@7641: 	RoadBits road_bits = *pieces | existing;
rubidium@7641: 
rubidium@7641: 	/* Single bits on slopes.
rubidium@7641: 	 * We check for the roads that need at least 2 bits */
rubidium@7641: 	if (_patches.build_on_slopes && !_is_old_ai_player &&
rubidium@7641: 			existing == ROAD_NONE && COUNTBITS(*pieces) == 1 &&
rubidium@7641: 			(_valid_tileh_slopes_road[2][tileh] & *pieces) == ROAD_NONE) {
rubidium@7641: 		return CommandCost(_price.terraform);
rubidium@7641: 	}
truelight@0: 
belugas@6393: 	/* no special foundation */
rubidium@7641: 	if ((~_valid_tileh_slopes_road[0][tileh] & road_bits) == ROAD_NONE) {
belugas@6393: 		/* force that all bits are set when we have slopes */
tron@3636: 		if (tileh != SLOPE_FLAT) *pieces |= _valid_tileh_slopes_road[0][tileh];
rubidium@6950: 		return CommandCost(); // no extra cost
tron@3381: 	}
tron@3381: 
belugas@6393: 	/* foundation is used. Whole tile is leveled up */
rubidium@7641: 	if ((~_valid_tileh_slopes_road[1][tileh] & road_bits) == ROAD_NONE) {
rubidium@7763: 		return CommandCost(existing != ROAD_NONE ? (Money)0 : _price.terraform);
tron@3381: 	}
tron@3381: 
rubidium@7641: 	/* Force straight roads. */
rubidium@7641: 	*pieces |= MirrorRoadBits(*pieces);
rubidium@7332: 
belugas@6393: 	/* partly leveled up tile, only if there's no road on that tile */
rubidium@7641: 	if ((existing == ROAD_NONE || existing == *pieces) && (tileh == SLOPE_W || tileh == SLOPE_S || tileh == SLOPE_E || tileh == SLOPE_N)) {
tron@3381: 		if (*pieces == ROAD_X || *pieces == ROAD_Y) return _price.terraform;
truelight@0: 	}
truelight@0: 	return CMD_ERROR;
truelight@0: }
truelight@0: 
Darkvater@1784: /** Build a piece of road.
tron@3491:  * @param tile tile where to build road
belugas@6483:  * @param flags operation to perform
tron@6134:  * @param p1 bit 0..3 road pieces to build (RoadBits)
rubidium@6661:  *           bit 4..5 road type
rubidium@6764:  *           bit 6..7 disallowed directions to toggle
Darkvater@1784:  * @param p2 the town that is building the road (0 if not applicable)
truelight@0:  */
rubidium@6943: CommandCost CmdBuildRoad(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
rubidium@6950: 	CommandCost cost;
rubidium@6943: 	CommandCost ret;
rubidium@5587: 	RoadBits existing = ROAD_NONE;
rubidium@6715: 	RoadBits all_bits = ROAD_NONE;
tron@3636: 	Slope tileh;
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 */
tron@6134: 	if ((IsValidPlayer(_current_player) && p2 != 0) || (_current_player == OWNER_TOWN && !IsValidTownID(p2))) return CMD_ERROR;
tron@6134: 
tron@6134: 	RoadBits pieces = Extract<RoadBits, 0>(p1);
Darkvater@1784: 
rubidium@6661: 	RoadType rt = (RoadType)GB(p1, 4, 2);
rubidium@6661: 	if (!IsValidRoadType(rt)) return CMD_ERROR;
rubidium@6661: 
rubidium@6764: 	DisallowedRoadDirections toggle_drd = (DisallowedRoadDirections)GB(p1, 6, 2);
rubidium@6764: 
celestar@3434: 	tileh = GetTileSlope(tile, NULL);
truelight@0: 
celestar@3434: 	switch (GetTileType(tile)) {
rubidium@7370: 		case MP_ROAD:
rubidium@3793: 			switch (GetRoadTileType(tile)) {
rubidium@6764: 				case ROAD_TILE_NORMAL: {
tron@4046: 					if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
rubidium@6756: 					if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
rubidium@6756: 
glx@6719: 					all_bits = GetAllRoadBits(tile);
rubidium@6662: 					if (!HASBIT(GetRoadTypes(tile), rt)) break;
tron@4046: 
rubidium@6661: 					existing = GetRoadBits(tile, rt);
rubidium@6764: 					RoadBits merged = existing | pieces;
rubidium@6768: 					bool crossing = (merged != ROAD_X && merged != ROAD_Y);
rubidium@6768: 					if (rt != ROADTYPE_TRAM && (GetDisallowedRoadDirections(tile) != DRD_NONE || toggle_drd != DRD_NONE) && crossing) {
rubidium@6764: 						/* Junctions cannot be one-way */
rubidium@6764: 						return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION);
rubidium@6764: 					}
tron@3150: 					if ((existing & pieces) == pieces) {
rubidium@6764: 						/* We only want to set the (dis)allowed road directions */
rubidium@6764: 						if (toggle_drd != DRD_NONE && rt != ROADTYPE_TRAM && GetRoadOwner(tile, ROADTYPE_ROAD) == _current_player) {
rubidium@6764: 							if (crossing) return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION);
rubidium@6764: 
rubidium@6764: 							/* Ignore half built tiles */
rubidium@6764: 							if (flags & DC_EXEC && rt != ROADTYPE_TRAM && (existing == ROAD_X || existing == ROAD_Y)) {
rubidium@6764: 								SetDisallowedRoadDirections(tile, GetDisallowedRoadDirections(tile) ^ toggle_drd);
rubidium@6764: 								MarkTileDirtyByTile(tile);
rubidium@6764: 							}
rubidium@6950: 							return CommandCost();
rubidium@6764: 						}
tron@3066: 						return_cmd_error(STR_1007_ALREADY_BUILT);
tron@3066: 					}
rubidium@6764: 				} break;
tron@3066: 
rubidium@3793: 				case ROAD_TILE_CROSSING:
rubidium@6661: 					if (HASBIT(GetRoadTypes(tile), rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
rubidium@6715: 					all_bits = GetCrossingRoadBits(tile);
rubidium@6715: 					if (pieces & ComplementRoadBits(all_bits)) goto do_clear;
rubidium@6661: 					break;
tron@3066: 
tron@3069: 				default:
rubidium@3793: 				case ROAD_TILE_DEPOT:
tron@3066: 					goto do_clear;
tron@3060: 			}
tron@3060: 			break;
truelight@0: 
tron@3060: 		case MP_RAILWAY: {
tron@3099: 			Axis roaddir;
dominik@13: 
tron@3636: 			if (IsSteepSlope(tileh)) {
tron@3060: 				return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
tron@3060: 			}
tron@3060: 
tron@3104: 			/* Level crossings may only be built on these slopes */
rubidium@7582: 			if (!HASBIT(VALID_LEVEL_CROSSING_SLOPES, tileh)) {
tron@3060: 				return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
tron@3060: 			}
tron@3060: 
rubidium@3792: 			if (GetRailTileType(tile) != RAIL_TILE_NORMAL) goto do_clear;
tron@3269: 			switch (GetTrackBits(tile)) {
tron@3269: 				case TRACK_BIT_X:
tron@3269: 					if (pieces & ROAD_X) goto do_clear;
tron@3269: 					roaddir = AXIS_Y;
tron@3269: 					break;
tron@3269: 
tron@3269: 				case TRACK_BIT_Y:
tron@3269: 					if (pieces & ROAD_Y) goto do_clear;
tron@3269: 					roaddir = AXIS_X;
tron@3269: 					break;
tron@3269: 
tron@3269: 				default: goto do_clear;
tron@3060: 			}
tron@3060: 
belugas@6406: 			if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
tron@3381: 
tron@3060: 			if (flags & DC_EXEC) {
rubidium@5587: 				YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetTrackBits(tile)));
rubidium@6697: 				/* Always add road to the roadtypes (can't draw without it) */
rubidium@6697: 				MakeRoadCrossing(tile, _current_player, _current_player, _current_player, GetTileOwner(tile), roaddir, GetRailType(tile), RoadTypeToRoadTypes(rt) | ROADTYPES_ROAD, p2);
tron@3100: 				MarkTileDirtyByTile(tile);
tron@3060: 			}
rubidium@6950: 			return CommandCost(_price.build_road * (rt == ROADTYPE_ROAD ? 2 : 4));
tron@3017: 		}
truelight@0: 
rubidium@6679: 		case MP_STATION:
rubidium@6679: 			if (!IsDriveThroughStopTile(tile)) return CMD_ERROR;
rubidium@6679: 			if (HASBIT(GetRoadTypes(tile), rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
rubidium@6761: 			/* Don't allow "upgrading" the roadstop when vehicles are already driving on it */
rubidium@6761: 			if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
rubidium@6679: 			break;
rubidium@6679: 
rubidium@6679: 		case MP_TUNNELBRIDGE:
rubidium@6679: 			if ((IsTunnel(tile) && GetTunnelTransportType(tile) != TRANSPORT_ROAD) ||
rubidium@6679: 					(IsBridge(tile) && GetBridgeTransportType(tile) != TRANSPORT_ROAD)) return CMD_ERROR;
rubidium@6679: 			if (HASBIT(GetRoadTypes(tile), rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
rubidium@6761: 			/* Don't allow "upgrading" the bridge/tunnel when vehicles are already driving on it */
rubidium@6761: 			if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
rubidium@6679: 			break;
rubidium@6679: 
tron@3060: 		default:
truelight@0: do_clear:;
tron@3491: 			ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
tron@3381: 			if (CmdFailed(ret)) return ret;
rubidium@6950: 			cost.AddCost(ret);
truelight@0: 	}
truelight@0: 
rubidium@6716: 	if (all_bits != pieces) {
rubidium@6715: 		/* Check the foundation/slopes when adding road/tram bits */
rubidium@6715: 		ret = CheckRoadSlope(tileh, &pieces, all_bits | existing);
rubidium@6715: 		/* Return an error if we need to build a foundation (ret != 0) but the
rubidium@6715: 		 * current patch-setting is turned off (or stupid AI@work) */
rubidium@6950: 		if (CmdFailed(ret) || (ret.GetCost() != 0 && (!_patches.build_on_slopes || _is_old_ai_player))) {
rubidium@6715: 			return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
rubidium@6715: 		}
rubidium@6950: 		cost.AddCost(ret);
rubidium@6715: 	}
truelight@0: 
rubidium@7370: 	if (IsTileType(tile, MP_ROAD)) {
belugas@6393: 		/* Don't put the pieces that already exist */
tron@3150: 		pieces &= ComplementRoadBits(existing);
truelight@0: 	}
truelight@0: 
rubidium@7516: 	cost.AddCost(COUNTBITS(pieces) * _price.build_road);
rubidium@6679: 	if (IsTileType(tile, MP_TUNNELBRIDGE)) {
rubidium@6679: 		/* Pay for *every* tile of the bridge or tunnel */
rubidium@6950: 		cost.MultiplyCost(DistanceManhattan(IsTunnel(tile) ? GetOtherTunnelEnd(tile) : GetOtherBridgeEnd(tile), tile));
rubidium@6679: 	}
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
rubidium@6679: 		switch (GetTileType(tile)) {
rubidium@7370: 			case MP_ROAD: {
rubidium@6679: 				RoadTileType rtt = GetRoadTileType(tile);
rubidium@6679: 				if (existing == ROAD_NONE || rtt == ROAD_TILE_CROSSING) {
rubidium@6679: 					SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
rubidium@6679: 					SetRoadOwner(tile, rt, _current_player);
rubidium@6968: 					if (_current_player == OWNER_TOWN && rt == ROADTYPE_ROAD) SetTownIndex(tile, p2);
rubidium@6679: 				}
rubidium@6679: 				if (rtt != ROAD_TILE_CROSSING) SetRoadBits(tile, existing | pieces, rt);
rubidium@6679: 			} break;
rubidium@6679: 
rubidium@6679: 			case MP_TUNNELBRIDGE: {
rubidium@6679: 				TileIndex other_end = IsTunnel(tile) ? GetOtherTunnelEnd(tile) : GetOtherBridgeEnd(tile);
rubidium@6679: 
rubidium@6679: 				SetRoadTypes(other_end, GetRoadTypes(other_end) | RoadTypeToRoadTypes(rt));
rubidium@6661: 				SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
rubidium@6679: 
rubidium@6679: 				/* Mark tiles diry that have been repaved */
rubidium@6679: 				MarkTileDirtyByTile(other_end);
rubidium@6714: 				MarkTileDirtyByTile(tile);
rubidium@6679: 				if (IsBridge(tile)) {
rubidium@6679: 					TileIndexDiff delta = TileOffsByDiagDir(GetBridgeRampDirection(tile));
rubidium@6679: 
rubidium@6713: 					for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t);
rubidium@6679: 				}
rubidium@6679: 			} break;
rubidium@6679: 
rubidium@6679: 			case MP_STATION:
rubidium@6679: 				SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
rubidium@6679: 				break;
rubidium@6679: 
rubidium@6679: 			default:
rubidium@6679: 				MakeRoadNormal(tile, pieces, RoadTypeToRoadTypes(rt), p2, _current_player, _current_player, _current_player);
rubidium@6679: 				break;
truelight@0: 		}
truelight@0: 
rubidium@7370: 		if (rt != ROADTYPE_TRAM && IsTileType(tile, MP_ROAD) && GetRoadTileType(tile) == ROAD_TILE_NORMAL) {
rubidium@6764: 			existing |= pieces;
rubidium@6764: 			SetDisallowedRoadDirections(tile, (existing == ROAD_X || existing == ROAD_Y) ?
rubidium@6764: 					GetDisallowedRoadDirections(tile) ^ toggle_drd : DRD_NONE);
rubidium@6764: 		}
rubidium@6764: 
truelight@0: 		MarkTileDirtyByTile(tile);
truelight@0: 	}
truelight@0: 	return cost;
truelight@0: }
truelight@0: 
celestar@6368: /**
celestar@6368:  * Switches the rail type on a level crossing.
celestar@6368:  * @param tile        The tile on which the railtype is to be convert.
celestar@6368:  * @param totype      The railtype we want to convert to
celestar@6368:  * @param exec        Switches between test and execute mode
celestar@6368:  * @return            The cost and state of the operation
celestar@6368:  * @retval CMD_ERROR  An error occured during the operation.
celestar@6368:  */
rubidium@6943: CommandCost DoConvertStreetRail(TileIndex tile, RailType totype, bool exec)
truelight@0: {
belugas@6393: 	/* not a railroad crossing? */
Darkvater@1927: 	if (!IsLevelCrossing(tile)) return CMD_ERROR;
truelight@0: 
truelight@0: 	if (exec) {
rubidium@6172: 		SetRailType(tile, totype);
truelight@0: 		MarkTileDirtyByTile(tile);
rubidium@5587: 		YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetCrossingRailBits(tile)));
rubidium@7539: 		VehicleFromPos(tile, &tile, UpdateTrainPowerProc);
truelight@0: 	}
truelight@0: 
maedhros@7730: 	return CommandCost(RailBuildCost(totype) / 2);
truelight@0: }
truelight@0: 
truelight@0: 
Darkvater@1784: /** Build a long piece of road.
tron@3491:  * @param end_tile end tile of drag
belugas@6483:  * @param flags operation to perform
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)
rubidium@6662:  * - p2 = (bit 3 + 4) - road type
rubidium@6764:  * - p2 = (bit 5) - set road direction
Darkvater@1784:  */
rubidium@6943: CommandCost CmdBuildLongRoad(TileIndex end_tile, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
tron@3491: 	TileIndex start_tile, tile;
rubidium@6943: 	CommandCost cost, ret;
rubidium@6710: 	bool had_bridge = false;
rubidium@7428: 	bool had_tunnel = false;
rubidium@6764: 	bool had_success = false;
rubidium@6764: 	DisallowedRoadDirections drd = DRD_NORTHBOUND;
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;
rubidium@6662: 	RoadType rt = (RoadType)GB(p2, 3, 2);
rubidium@6662: 	if (!IsValidRoadType(rt)) return CMD_ERROR;
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;
rubidium@6491: 		p2 ^= IS_INT_INSIDE(p2 & 3, 1, 3) ? 3 : 0;
rubidium@6764: 		drd = DRD_SOUTHBOUND;
truelight@0: 	}
truelight@0: 
rubidium@6764: 	/* On the X-axis, we have to swap the initial bits, so they
rubidium@6764: 	 * will be interpreted correctly in the GTTS. Futhermore
rubidium@6764: 	 * when you just 'click' on one tile to build them. */
rubidium@7670: 	if (HASBIT(p2, 2) == (start_tile == end_tile && HASBIT(p2, 0) == HASBIT(p2, 1))) drd ^= DRD_BOTH;
rubidium@6764: 	/* No disallowed direction bits have to be toggled */
rubidium@6764: 	if (!HASBIT(p2, 5)) drd = DRD_NONE;
rubidium@6764: 
truelight@0: 	tile = start_tile;
belugas@6393: 	/* Start tile is the small number. */
Darkvater@1784: 	for (;;) {
tron@3098: 		RoadBits bits = HASBIT(p2, 2) ? ROAD_Y : ROAD_X;
tron@3098: 
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: 
rubidium@6764: 		ret = DoCommand(tile, drd << 6 | rt << 4 | bits, 0, flags, CMD_BUILD_ROAD);
Darkvater@1784: 		if (CmdFailed(ret)) {
Darkvater@1784: 			if (_error_message != STR_1007_ALREADY_BUILT) return CMD_ERROR;
Darkvater@3671: 			_error_message = INVALID_STRING_ID;
tron@2549: 		} else {
rubidium@6764: 			had_success = true;
rubidium@7428: 			/* Only pay for the upgrade on one side of the bridges and tunnels */
rubidium@7428: 			if (IsTileType(tile, MP_TUNNELBRIDGE)) {
rubidium@7428: 				if (IsBridge(tile)) {
rubidium@7428: 					if ((!had_bridge || GetBridgeRampDirection(tile) == DIAGDIR_SE || GetBridgeRampDirection(tile) == DIAGDIR_SW)) {
rubidium@7428: 						cost.AddCost(ret);
rubidium@7428: 					}
rubidium@7428: 					had_bridge = true;
rubidium@7428: 				} else {
rubidium@7428: 					if ((!had_tunnel || GetTunnelDirection(tile) == DIAGDIR_SE || GetTunnelDirection(tile) == DIAGDIR_SW)) {
rubidium@7428: 						cost.AddCost(ret);
rubidium@7428: 					}
rubidium@7428: 					had_tunnel = true;
rubidium@6710: 				}
rubidium@6710: 			} else {
rubidium@6950: 				cost.AddCost(ret);
rubidium@6710: 			}
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: 
rubidium@6764: 	return !had_success ? CMD_ERROR : cost;
truelight@0: }
truelight@0: 
Darkvater@1784: /** Remove a long piece of road.
tron@3491:  * @param end_tile end tile of drag
belugas@6483:  * @param flags operation to perform
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)
rubidium@6662:  * - p2 = (bit 3 + 4) - road type
Darkvater@1784:  */
rubidium@6943: CommandCost CmdRemoveLongRoad(TileIndex end_tile, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
tron@3491: 	TileIndex start_tile, tile;
rubidium@7442: 	CommandCost cost, ret, money;
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;
rubidium@6662: 	RoadType rt = (RoadType)GB(p2, 3, 2);
rubidium@6662: 	if (!IsValidRoadType(rt)) return CMD_ERROR;
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;
tron@3017: 		p2 ^= IS_INT_INSIDE(p2 & 3, 1, 3) ? 3 : 0;
truelight@0: 	}
truelight@0: 
rubidium@7442: 	money.AddCost(GetAvailableMoneyForCommand());
truelight@0: 	tile = start_tile;
belugas@6393: 	/* Start tile is the small number. */
Darkvater@1784: 	for (;;) {
tron@3098: 		RoadBits bits = HASBIT(p2, 2) ? ROAD_Y : ROAD_X;
tron@3098: 
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: 
belugas@6393: 		/* try to remove the halves. */
tron@3098: 		if (bits != 0) {
rubidium@7442: 			ret = DoCommand(tile, rt << 4 | bits, 0, flags & ~DC_EXEC, CMD_REMOVE_ROAD);
rubidium@7442: 			if (CmdSucceeded(ret)) {
rubidium@7442: 				if (flags & DC_EXEC) {
rubidium@7442: 					money.AddCost(-ret.GetCost());
rubidium@7442: 					if (money.GetCost() < 0) {
rubidium@7442: 						_additional_cash_required = DoCommand(end_tile, start_tile, p2, flags & ~DC_EXEC, CMD_REMOVE_LONG_ROAD).GetCost();
rubidium@7442: 						return cost;
rubidium@7442: 					}
rubidium@7442: 					DoCommand(tile, rt << 4 | bits, 0, flags, CMD_REMOVE_ROAD);
rubidium@7442: 				}
rubidium@7442: 				cost.AddCost(ret);
rubidium@7442: 			}
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: 
rubidium@6950: 	return (cost.GetCost() == 0) ? CMD_ERROR : cost;
truelight@0: }
truelight@0: 
Darkvater@1784: /** Build a road depot.
tron@3491:  * @param tile tile where to build the depot
belugas@6483:  * @param flags operation to perform
tron@6134:  * @param p1 bit 0..1 entrance direction (DiagDirection)
rubidium@6662:  *           bit 2..3 road type
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:  */
rubidium@6943: CommandCost CmdBuildRoadDepot(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
rubidium@6943: 	CommandCost cost;
tron@3636: 	Slope tileh;
truelight@0: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@0: 
tron@6134: 	DiagDirection dir = Extract<DiagDirection, 0>(p1);
rubidium@6662: 	RoadType rt = (RoadType)GB(p1, 2, 2);
rubidium@6662: 
rubidium@6662: 	if (!IsValidRoadType(rt)) return CMD_ERROR;
Darkvater@1784: 
tron@3055: 	tileh = GetTileSlope(tile, NULL);
tron@3636: 	if (tileh != SLOPE_FLAT && (
tron@2549: 				!_patches.build_on_slopes ||
tron@3636: 				IsSteepSlope(tileh) ||
tron@6134: 				!CanBuildDepotByTileh(dir, tileh)
tron@2549: 			)) {
tron@2549: 		return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
truelight@0: 	}
truelight@0: 
tron@3491: 	cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
Darkvater@1784: 	if (CmdFailed(cost)) return CMD_ERROR;
truelight@0: 
celestar@5385: 	if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST);
celestar@5385: 
rubidium@7389: 	Depot *dep = new Depot(tile);
tron@2549: 	if (dep == NULL) return CMD_ERROR;
rubidium@7389: 	AutoPtrT<Depot> d_auto_delete = dep;
truelight@0: 
truelight@201: 	if (flags & DC_EXEC) {
truelight@0: 		dep->town_index = ClosestTownFromTile(tile, (uint)-1)->index;
truelight@0: 
rubidium@6661: 		MakeRoadDepot(tile, _current_player, dir, rt);
tron@3100: 		MarkTileDirtyByTile(tile);
rubidium@7389: 		d_auto_delete.Detach();
truelight@0: 	}
rubidium@6950: 	return cost.AddCost(_price.build_road_depot);
truelight@0: }
truelight@0: 
rubidium@6943: static CommandCost RemoveRoadDepot(TileIndex tile, uint32 flags)
truelight@0: {
darkvater@149: 	if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER)
truelight@0: 		return CMD_ERROR;
truelight@0: 
rubidium@7758: 	if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
truelight@0: 
rubidium@7389: 	if (flags & DC_EXEC) {
rubidium@7389: 		DoClearSquare(tile);
rubidium@7389: 		delete GetDepotByTile(tile);
rubidium@7389: 	}
truelight@0: 
rubidium@6950: 	return CommandCost(_price.remove_road_depot);
truelight@0: }
truelight@0: 
rubidium@6943: static CommandCost ClearTile_Road(TileIndex tile, byte flags)
tron@1977: {
rubidium@3793: 	switch (GetRoadTileType(tile)) {
rubidium@3793: 		case ROAD_TILE_NORMAL: {
rubidium@6661: 			RoadBits b = GetAllRoadBits(tile);
truelight@0: 
Darkvater@5637: 			/* Clear the road if only one piece is on the tile OR the AI tries
Darkvater@5637: 			 * to clear town road OR we are not using the DC_AUTO flag */
rubidium@7675: 			if ((COUNTBITS(b) == 1 && GetRoadBits(tile, ROADTYPE_TRAM) == ROAD_NONE) ||
Darkvater@5637: 			    ((flags & DC_AI_BUILDING) && IsTileOwner(tile, OWNER_TOWN)) ||
Darkvater@5637: 			    !(flags & DC_AUTO)
Darkvater@5637: 				) {
rubidium@6679: 				RoadTypes rts = GetRoadTypes(tile);
rubidium@6950: 				CommandCost ret;
rubidium@6679: 				for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
rubidium@6679: 					if (HASBIT(rts, rt)) {
rubidium@6943: 						CommandCost tmp_ret = DoCommand(tile, rt << 4 | GetRoadBits(tile, rt), 0, flags, CMD_REMOVE_ROAD);
rubidium@6679: 						if (CmdFailed(tmp_ret)) return tmp_ret;
rubidium@6950: 						ret.AddCost(tmp_ret);
rubidium@6679: 					}
rubidium@6679: 				}
rubidium@6679: 				return ret;
tron@3060: 			}
Darkvater@5637: 			return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
Darkvater@5643: 		}
truelight@0: 
rubidium@3793: 		case ROAD_TILE_CROSSING: {
rubidium@6814: 			RoadTypes rts = GetRoadTypes(tile);
rubidium@6950: 			CommandCost ret;
tron@3060: 
tron@3069: 			if (flags & DC_AUTO) return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
tron@3060: 
rubidium@6814: 			/* Must iterate over the roadtypes in a reverse manner because
rubidium@6814: 			 * tram tracks must be removed before the road bits. */
rubidium@6814: 			for (RoadType rt = ROADTYPE_HWAY; rt >= ROADTYPE_ROAD; rt--) {
rubidium@6814: 				if (HASBIT(rts, rt)) {
rubidium@6943: 					CommandCost tmp_ret = DoCommand(tile, 1 << 6 | rt << 4 | GetCrossingRoadBits(tile), 0, flags, CMD_REMOVE_ROAD);
rubidium@6814: 					if (CmdFailed(tmp_ret)) return tmp_ret;
rubidium@6950: 					ret.AddCost(tmp_ret);
rubidium@6814: 				}
rubidium@6814: 			}
tron@3060: 
tron@3060: 			if (flags & DC_EXEC) {
tron@3491: 				DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
tron@3060: 			}
tron@3060: 			return ret;
tron@3060: 		}
tron@3060: 
tron@3069: 		default:
rubidium@3793: 		case ROAD_TILE_DEPOT:
tron@3060: 			if (flags & DC_AUTO) {
tron@3060: 				return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
tron@3060: 			}
tron@3060: 			return RemoveRoadDepot(tile, flags);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: 
rubidium@6248: struct DrawRoadTileStruct {
truelight@0: 	uint16 image;
truelight@0: 	byte subcoord_x;
truelight@0: 	byte subcoord_y;
rubidium@6248: };
truelight@0: 
truelight@0: #include "table/road_land.h"
truelight@0: 
truelight@0: 
rubidium@7335: Foundation GetRoadFoundation(Slope tileh, RoadBits bits)
tron@2548: {
rubidium@7335: 	if (!IsSteepSlope(tileh)) {
rubidium@7355: 		if ((~_valid_tileh_slopes_road[0][tileh] & bits) == 0) {
rubidium@7355: 			/* As one can remove a single road piece when in a corner on a foundation as
rubidium@7355: 			 * it is on a sloped piece of landscape, one creates a state that cannot be
rubidium@7355: 			 * created directly, but the state itself is still perfectly drawable.
rubidium@7355: 			 * However, as we do not want this to be build directly, we need to check
rubidium@7355: 			 * for that situation in here. */
rubidium@7355: 			return (tileh != 0 && HAS_SINGLE_BIT(bits)) ? FOUNDATION_LEVELED : FOUNDATION_NONE;
rubidium@7355: 		}
rubidium@7335: 		if ((~_valid_tileh_slopes_road[1][tileh] & bits) == 0) return FOUNDATION_LEVELED;
tron@4246: 	}
truelight@0: 
rubidium@7335: 	return (bits == ROAD_X ? FOUNDATION_INCLINED_X : FOUNDATION_INCLINED_Y);
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: /**
maedhros@6541:  * Whether to draw unpaved roads regardless of the town zone.
maedhros@6541:  * By default, OpenTTD always draws roads as unpaved if they are on a desert
maedhros@6541:  * tile or above the snowline. Newgrf files, however, can set a bit that allows
maedhros@6541:  * paved roads to be built on desert tiles as they would be on grassy tiles.
maedhros@6541:  *
maedhros@6541:  * @param tile The tile the road is on
maedhros@6541:  * @param roadside What sort of road this is
maedhros@6541:  * @return True if the road should be drawn unpaved regardless of the roadside.
maedhros@6541:  */
maedhros@6541: static bool AlwaysDrawUnpavedRoads(TileIndex tile, Roadside roadside)
maedhros@6541: {
maedhros@6541: 	return (IsOnSnow(tile) &&
maedhros@6541: 			!(_opt.landscape == LT_TROPIC && HasGrfMiscBit(GMB_DESERT_PAVED_ROADS) &&
maedhros@6541: 				roadside != ROADSIDE_BARREN && roadside != ROADSIDE_GRASS && roadside != ROADSIDE_GRASS_ROAD_WORKS));
maedhros@6541: }
maedhros@6541: 
maedhros@6541: /**
rubidium@6691:  * Draws the catenary for the given tile
rubidium@6691:  * @param ti   information about the tile (slopes, height etc)
rubidium@6691:  * @param tram the roadbits for the tram
rubidium@6691:  */
rubidium@6691: void DrawTramCatenary(TileInfo *ti, RoadBits tram)
rubidium@6691: {
rubidium@6691: 	/* Don't draw the catenary under a low bridge */
rubidium@6691: 	if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && !HASBIT(_transparent_opt, TO_BUILDINGS)) {
rubidium@6691: 		uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
rubidium@6691: 
rubidium@6699: 		if (height <= GetTileMaxZ(ti->tile) + TILE_HEIGHT) return;
rubidium@6691: 	}
rubidium@6691: 
rubidium@6691: 	SpriteID front;
rubidium@6691: 	SpriteID back;
rubidium@6691: 
rubidium@6691: 	if (ti->tileh != SLOPE_FLAT) {
rubidium@6691: 		back  = SPR_TRAMWAY_BACK_WIRES_SLOPED  + _road_sloped_sprites[ti->tileh - 1];
rubidium@6691: 		front = SPR_TRAMWAY_FRONT_WIRES_SLOPED + _road_sloped_sprites[ti->tileh - 1];
rubidium@6691: 	} else {
rubidium@6691: 		back  = SPR_TRAMWAY_BASE + _road_backpole_sprites_1[tram];
rubidium@6691: 		front = SPR_TRAMWAY_BASE + _road_frontwire_sprites_1[tram];
rubidium@6691: 	}
rubidium@6691: 
rubidium@7601: 	AddSortableSpriteToDraw(back,  PAL_NONE, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, HASBIT(_transparent_opt, TO_BUILDINGS));
rubidium@7601: 	AddSortableSpriteToDraw(front, PAL_NONE, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, HASBIT(_transparent_opt, TO_BUILDINGS));
rubidium@6691: }
rubidium@6691: 
rubidium@6691: /**
rubidium@6764:  * Draws details on/around the road
rubidium@6764:  * @param img the sprite to draw
rubidium@6764:  * @param ti  the tile to draw on
rubidium@6764:  * @param dx  the offset from the top of the BB of the tile
rubidium@6764:  * @param dy  the offset from the top of the BB of the tile
rubidium@6764:  * @param h   the height of the sprite to draw
rubidium@6764:  */
rubidium@6764: static void DrawRoadDetail(SpriteID img, TileInfo *ti, int dx, int dy, int h)
rubidium@6764: {
rubidium@6764: 	int x = ti->x | dx;
rubidium@6764: 	int y = ti->y | dy;
rubidium@6764: 	byte z = ti->z;
rubidium@6764: 	if (ti->tileh != SLOPE_FLAT) z = GetSlopeZ(x, y);
rubidium@6764: 	AddSortableSpriteToDraw(img, PAL_NONE, x, y, 2, 2, h, z);
rubidium@6764: }
rubidium@6764: 
rubidium@6764: /**
peter1138@2471:  * Draw ground sprite and road pieces
peter1138@2471:  * @param ti TileInfo
peter1138@2471:  */
tron@4081: static void DrawRoadBits(TileInfo* ti)
peter1138@2471: {
rubidium@6661: 	RoadBits road = GetRoadBits(ti->tile, ROADTYPE_ROAD);
rubidium@6691: 	RoadBits tram = GetRoadBits(ti->tile, ROADTYPE_TRAM);
rubidium@6691: 
peter1138@2471: 	const DrawRoadTileStruct *drts;
peter1138@5668: 	SpriteID image = 0;
peter1138@5668: 	SpriteID pal = PAL_NONE;
tron@4048: 	Roadside roadside;
peter1138@2471: 
tron@3636: 	if (ti->tileh != SLOPE_FLAT) {
rubidium@7335: 		DrawFoundation(ti, GetRoadFoundation(ti->tileh, road | tram));
peter1138@2471: 
belugas@6393: 		/* DrawFoundation() modifies ti.
belugas@6393: 		 * Default sloped sprites.. */
tron@3636: 		if (ti->tileh != SLOPE_FLAT) image = _road_sloped_sprites[ti->tileh - 1] + 0x53F;
peter1138@2471: 	}
peter1138@2471: 
rubidium@6691: 	if (image == 0) image = _road_tile_sprites_1[road != ROAD_NONE ? road : tram];
peter1138@2471: 
tron@4048: 	roadside = GetRoadside(ti->tile);
peter1138@2471: 
maedhros@6541: 	if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) {
peter1138@2471: 		image += 19;
tron@4048: 	} else {
tron@4048: 		switch (roadside) {
peter1138@5668: 			case ROADSIDE_BARREN:           pal = PALETTE_TO_BARE_LAND; break;
tron@4048: 			case ROADSIDE_GRASS:            break;
tron@4048: 			case ROADSIDE_GRASS_ROAD_WORKS: break;
tron@4048: 			default:                        image -= 19; break; // Paved
tron@4048: 		}
peter1138@2471: 	}
peter1138@2471: 
peter1138@5668: 	DrawGroundSprite(image, pal);
peter1138@2471: 
rubidium@6691: 	/* For tram we overlay the road graphics with either tram tracks only
rubidium@6691: 	 * (when there is actual road beneath the trams) or with tram tracks
rubidium@6691: 	 * and some dirts which hides the road graphics */
rubidium@6691: 	if (tram != ROAD_NONE) {
rubidium@6691: 		if (ti->tileh != SLOPE_FLAT) {
rubidium@6691: 			image = _road_sloped_sprites[ti->tileh - 1] + SPR_TRAMWAY_SLOPED_OFFSET;
rubidium@6691: 		} else {
rubidium@6691: 			image = _road_tile_sprites_1[tram] - SPR_ROAD_Y;
rubidium@6691: 		}
rubidium@6691: 		image += (road == ROAD_NONE) ? SPR_TRAMWAY_TRAM : SPR_TRAMWAY_OVERLAY;
rubidium@6691: 		DrawGroundSprite(image, pal);
rubidium@6691: 	}
rubidium@6691: 
rubidium@6965: 	if (road != ROAD_NONE) {
rubidium@6965: 		DisallowedRoadDirections drd = GetDisallowedRoadDirections(ti->tile);
rubidium@6965: 		if (drd != DRD_NONE) {
rubidium@6965: 			DrawRoadDetail(SPR_ONEWAY_BASE + drd - 1 + ((road == ROAD_X) ? 0 : 3), ti, 8, 8, 0);
rubidium@6965: 		}
rubidium@6965: 	}
rubidium@6965: 
celestar@3430: 	if (HasRoadWorks(ti->tile)) {
belugas@6393: 		/* Road works */
rubidium@6691: 		DrawGroundSprite((road | tram) & ROAD_X ? SPR_EXCAVATION_X : SPR_EXCAVATION_Y, PAL_NONE);
peter1138@2471: 		return;
peter1138@2471: 	}
peter1138@2471: 
rubidium@6691: 	if (tram != ROAD_NONE) DrawTramCatenary(ti, tram);
rubidium@6691: 
belugas@6393: 	/* Return if full detail is disabled, or we are zoomed fully out. */
truelight@6626: 	if (!HASBIT(_display_opt, DO_FULL_DETAIL) || _cur_dpi->zoom > ZOOM_LVL_DETAIL) return;
tron@5148: 
belugas@6393: 	/* Draw extra details. */
tron@4048: 	for (drts = _road_display_table[roadside][road]; drts->image != 0; drts++) {
rubidium@6764: 		DrawRoadDetail(drts->image, ti, drts->subcoord_x, drts->subcoord_y, 0x10);
peter1138@2471: 	}
peter1138@2471: }
peter1138@2471: 
truelight@0: static void DrawTile_Road(TileInfo *ti)
truelight@0: {
rubidium@3793: 	switch (GetRoadTileType(ti->tile)) {
rubidium@3793: 		case ROAD_TILE_NORMAL:
tron@4081: 			DrawRoadBits(ti);
tron@3060: 			break;
truelight@0: 
rubidium@3793: 		case ROAD_TILE_CROSSING: {
peter1138@5668: 			SpriteID image;
peter1138@5668: 			SpriteID pal = PAL_NONE;
maedhros@6541: 			Roadside roadside = GetRoadside(ti->tile);
tron@4000: 
rubidium@7335: 			if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
truelight@0: 
rubidium@6172: 			image = GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.crossing;
tron@3060: 
tron@3272: 			if (GetCrossingRoadAxis(ti->tile) == AXIS_X) image++;
celestar@3322: 			if (IsCrossingBarred(ti->tile)) image += 2;
tron@3060: 
maedhros@6541: 			if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) {
tron@3060: 				image += 8;
tron@3060: 			} else {
maedhros@6541: 				switch (roadside) {
peter1138@5668: 					case ROADSIDE_BARREN: pal = PALETTE_TO_BARE_LAND; break;
tron@4048: 					case ROADSIDE_GRASS:  break;
tron@4048: 					default:              image += 4; break; // Paved
tron@4048: 				}
tron@3060: 			}
tron@3060: 
peter1138@5668: 			DrawGroundSprite(image, pal);
rubidium@6697: 			if (HASBIT(GetRoadTypes(ti->tile), ROADTYPE_TRAM)) {
rubidium@6697: 				DrawGroundSprite(SPR_TRAMWAY_OVERLAY + (GetCrossingRoadAxis(ti->tile) ^ 1), pal);
rubidium@6697: 				DrawTramCatenary(ti, GetCrossingRoadBits(ti->tile));
rubidium@6697: 			}
rubidium@6172: 			if (GetRailType(ti->tile) == RAILTYPE_ELECTRIC) DrawCatenary(ti);
tron@3060: 			break;
truelight@0: 		}
truelight@0: 
tron@3098: 		default:
rubidium@3793: 		case ROAD_TILE_DEPOT: {
tron@4232: 			const DrawTileSprites* dts;
tron@4232: 			const DrawTileSeqStruct* dtss;
peter1138@5668: 			SpriteID palette;
truelight@0: 
rubidium@7335: 			if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
tron@1398: 
tron@4226: 			palette = PLAYER_SPRITE_COLOR(GetTileOwner(ti->tile));
truelight@0: 
rubidium@6691: 			if (HASBIT(GetRoadTypes(ti->tile), ROADTYPE_TRAM)) {
rubidium@6691: 				dts =  &_tram_depot[GetRoadDepotDirection(ti->tile)];
rubidium@6691: 			} else {
rubidium@6691: 				dts =  &_road_depot[GetRoadDepotDirection(ti->tile)];
rubidium@6691: 			}
rubidium@6691: 
peter1138@5668: 			DrawGroundSprite(dts->ground_sprite, PAL_NONE);
tron@3060: 
tron@4232: 			for (dtss = dts->seq; dtss->image != 0; dtss++) {
peter1138@5668: 				SpriteID image = dtss->image;
peter1138@5668: 				SpriteID pal;
tron@3060: 
rubidium@7333: 				if (!HASBIT(_transparent_opt, TO_BUILDINGS) && HASBIT(image, PALETTE_MODIFIER_COLOR)) {
peter1138@5668: 					pal = palette;
peter1138@5668: 				} else {
peter1138@5668: 					pal = PAL_NONE;
tron@4226: 				}
tron@3060: 
tron@4077: 				AddSortableSpriteToDraw(
peter1138@5668: 					image, pal,
tron@4232: 					ti->x + dtss->delta_x, ti->y + dtss->delta_y,
tron@4232: 					dtss->size_x, dtss->size_y,
rubidium@7333: 					dtss->size_z, ti->z,
rubidium@7333: 					HASBIT(_transparent_opt, TO_BUILDINGS)
tron@3060: 				);
tron@3060: 			}
tron@3060: 			break;
truelight@0: 		}
truelight@0: 	}
celestar@5385: 	DrawBridgeMiddle(ti);
truelight@0: }
truelight@0: 
rubidium@6666: void DrawRoadDepotSprite(int x, int y, DiagDirection dir, RoadType rt)
truelight@0: {
peter1138@5668: 	SpriteID palette = PLAYER_SPRITE_COLOR(_local_player);
rubidium@6691: 	const DrawTileSprites* dts = (rt == ROADTYPE_TRAM) ? &_tram_depot[dir] : &_road_depot[dir];
tron@4232: 	const DrawTileSeqStruct* dtss;
truelight@0: 
tron@2639: 	x += 33;
tron@2639: 	y += 17;
truelight@0: 
peter1138@5668: 	DrawSprite(dts->ground_sprite, PAL_NONE, x, y);
truelight@0: 
tron@4232: 	for (dtss = dts->seq; dtss->image != 0; dtss++) {
tron@4232: 		Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
peter1138@5668: 		SpriteID image = dtss->image;
truelight@201: 
peter1138@5668: 		DrawSprite(image, HASBIT(image, PALETTE_MODIFIER_COLOR) ? palette : PAL_NONE, x + pt.x, y + pt.y);
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@4231: static uint GetSlopeZ_Road(TileIndex tile, uint x, uint y)
truelight@0: {
tron@4231: 	uint z;
tron@4231: 	Slope tileh = GetTileSlope(tile, &z);
tron@3098: 
tron@3636: 	if (tileh == SLOPE_FLAT) return z;
tron@4231: 	if (GetRoadTileType(tile) == ROAD_TILE_NORMAL) {
rubidium@7335: 		Foundation f = GetRoadFoundation(tileh, GetAllRoadBits(tile));
rubidium@7335: 		z += ApplyFoundationToSlope(f, &tileh);
tron@4231: 		return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
tron@3286: 	} else {
tron@3645: 		return z + TILE_HEIGHT;
truelight@0: 	}
dominik@39: }
dominik@39: 
rubidium@7335: static Foundation GetFoundation_Road(TileIndex tile, Slope tileh)
dominik@39: {
rubidium@3793: 	if (GetRoadTileType(tile) == ROAD_TILE_NORMAL) {
rubidium@7335: 		return GetRoadFoundation(tileh, GetAllRoadBits(tile));
tron@3286: 	} else {
rubidium@7335: 		return FlatteningFoundation(tileh);
dominik@39: 	}
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: 
tron@4048: 
tron@4048: static const Roadside _town_road_types[][2] = {
tron@4048: 	{ ROADSIDE_GRASS,         ROADSIDE_GRASS },
tron@4048: 	{ ROADSIDE_PAVED,         ROADSIDE_PAVED },
tron@4048: 	{ ROADSIDE_PAVED,         ROADSIDE_PAVED },
tron@4048: 	{ ROADSIDE_TREES,         ROADSIDE_TREES },
tron@4048: 	{ ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
truelight@0: };
truelight@0: 
tron@4048: static const Roadside _town_road_types_2[][2] = {
tron@4048: 	{ ROADSIDE_GRASS,         ROADSIDE_GRASS },
tron@4048: 	{ ROADSIDE_PAVED,         ROADSIDE_PAVED },
tron@4048: 	{ ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
tron@4048: 	{ ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
tron@4048: 	{ ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
truelight@0: };
truelight@0: 
truelight@0: 
tron@1977: static void TileLoop_Road(TileIndex tile)
truelight@0: {
tron@3017: 	switch (_opt.landscape) {
belugas@6357: 		case LT_ARCTIC:
maedhros@6343: 			if (IsOnSnow(tile) != (GetTileZ(tile) > GetSnowLine())) {
celestar@3430: 				ToggleSnow(tile);
tron@3017: 				MarkTileDirtyByTile(tile);
tron@3017: 			}
tron@3017: 			break;
tron@3017: 
belugas@6357: 		case LT_TROPIC:
celestar@3430: 			if (GetTropicZone(tile) == TROPICZONE_DESERT && !IsOnDesert(tile)) {
celestar@3430: 				ToggleDesert(tile);
tron@3017: 				MarkTileDirtyByTile(tile);
tron@3017: 			}
tron@3017: 			break;
truelight@0: 	}
truelight@0: 
rubidium@3793: 	if (GetRoadTileType(tile) == ROAD_TILE_DEPOT) return;
truelight@0: 
rubidium@7641: 	const Town* t = ClosestTownFromTile(tile, (uint)-1);
celestar@3430: 	if (!HasRoadWorks(tile)) {
tron@4077: 		int grp = 0;
truelight@1280: 
truelight@0: 		if (t != NULL) {
truelight@0: 			grp = GetTownRadiusGroup(t, tile);
truelight@201: 
belugas@6393: 			/* Show an animation to indicate road work */
truelight@201: 			if (t->road_build_months != 0 &&
tron@4077: 					(DistanceManhattan(t->xy, tile) < 8 || grp != 0) &&
rubidium@7641: 					GetRoadTileType(tile) == ROAD_TILE_NORMAL && COUNTBITS(GetAllRoadBits(tile)) > 1 ) {
rubidium@7641: 				if (GetTileSlope(tile, NULL) == SLOPE_FLAT && EnsureNoVehicleOnGround(tile) && CHANCE16(1, 40)) {
celestar@3430: 					StartRoadWorks(tile);
truelight@201: 
tron@541: 					SndPlayTileFx(SND_21_JACKHAMMER, tile);
truelight@0: 					CreateEffectVehicleAbove(
celestar@3421: 						TileX(tile) * TILE_SIZE + 7,
celestar@3421: 						TileY(tile) * TILE_SIZE + 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: 		{
celestar@3430: 			/* Adjust road ground type depending on 'grp' (grp is the distance to the center) */
belugas@6357: 			const Roadside* new_rs = (_opt.landscape == LT_TOYLAND) ? _town_road_types_2[grp] : _town_road_types[grp];
tron@4048: 			Roadside cur_rs = GetRoadside(tile);
truelight@201: 
celestar@3430: 			/* We have our desired type, do nothing */
tron@4048: 			if (cur_rs == new_rs[0]) return;
celestar@3430: 
celestar@3430: 			/* We have the pre-type of the desired type, switch to the desired type */
tron@4048: 			if (cur_rs == new_rs[1]) {
tron@4048: 				cur_rs = new_rs[0];
celestar@3430: 			/* We have barren land, install the pre-type */
tron@4048: 			} else if (cur_rs == ROADSIDE_BARREN) {
tron@4048: 				cur_rs = new_rs[1];
celestar@3430: 			/* We're totally off limits, remove any installation and make barren land */
truelight@0: 			} else {
tron@4048: 				cur_rs = ROADSIDE_BARREN;
truelight@0: 			}
tron@4048: 			SetRoadside(tile, cur_rs);
truelight@0: 			MarkTileDirtyByTile(tile);
truelight@0: 		}
celestar@3430: 	} else if (IncreaseRoadWorksCounter(tile)) {
celestar@3430: 		TerminateRoadWorks(tile);
rubidium@7641: 
rubidium@7641: 		if (_patches.mod_road_rebuild) {
rubidium@7641: 			/* Generate a nicer town surface */
rubidium@7641: 			const RoadBits old_rb = GetAnyRoadBits(tile, ROADTYPE_ROAD);
rubidium@7641: 			const RoadBits new_rb = CleanUpRoadBits(tile, old_rb);
rubidium@7641: 
rubidium@7641: 			if (old_rb != new_rb) {
rubidium@7641: 				DoCommand(tile, (old_rb ^ new_rb), t->index, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_REMOVE_ROAD);
rubidium@7641: 			}
rubidium@7641: 		}
rubidium@7641: 
truelight@0: 		MarkTileDirtyByTile(tile);
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1977: static void ClickTile_Road(TileIndex tile)
truelight@0: {
rubidium@6259: 	if (GetRoadTileType(tile) == ROAD_TILE_DEPOT) ShowDepotWindow(tile, VEH_ROAD);
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: 
rubidium@6683: static uint32 GetTileTrackStatus_Road(TileIndex tile, TransportType mode, uint sub_mode)
tron@1977: {
rubidium@6661: 
tron@3066: 	switch (mode) {
tron@3066: 		case TRANSPORT_RAIL:
tron@3066: 			if (!IsLevelCrossing(tile)) return 0;
tron@3267: 			return GetCrossingRailBits(tile) * 0x101;
truelight@201: 
tron@3066: 		case TRANSPORT_ROAD:
rubidium@6683: 			if ((GetRoadTypes(tile) & sub_mode) == 0) return 0;
rubidium@3793: 			switch (GetRoadTileType(tile)) {
rubidium@6683: 				case ROAD_TILE_NORMAL: {
rubidium@6683: 					RoadType rt = (RoadType)FindFirstBit(sub_mode);
rubidium@6764: 					const uint drd_to_multiplier[DRD_END] = { 0x101, 0x100, 0x1, 0x0 };
rubidium@6764: 					uint multiplier = drd_to_multiplier[rt == ROADTYPE_TRAM ? DRD_NONE : GetDisallowedRoadDirections(tile)];
rubidium@6764: 					return HasRoadWorks(tile) ? 0 : _road_trackbits[GetRoadBits(tile, rt)] * multiplier;
rubidium@6683: 				}
tron@3066: 
rubidium@3793: 				case ROAD_TILE_CROSSING: {
tron@4158: 					uint32 r = AxisToTrackBits(GetCrossingRoadAxis(tile)) * 0x101;
tron@3272: 
tron@3367: 					if (IsCrossingBarred(tile)) r *= 0x10001;
tron@3066: 					return r;
tron@3066: 				}
tron@3066: 
tron@3069: 				default:
rubidium@3793: 				case ROAD_TILE_DEPOT:
tron@4158: 					return AxisToTrackBits(DiagDirToAxis(GetRoadDepotDirection(tile))) * 0x101;
truelight@201: 			}
tron@3066: 			break;
tron@3066: 
tron@3066: 		default: break;
truelight@0: 	}
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: static const StringID _road_tile_strings[] = {
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@1901: 	td->owner = GetTileOwner(tile);
rubidium@3793: 	switch (GetRoadTileType(tile)) {
rubidium@3793: 		case ROAD_TILE_CROSSING: td->str = STR_1818_ROAD_RAIL_LEVEL_CROSSING; break;
rubidium@3793: 		case ROAD_TILE_DEPOT: td->str = STR_1817_ROAD_VEHICLE_DEPOT; break;
tron@4048: 		default: td->str = _road_tile_strings[GetRoadside(tile)]; break;
tron@3069: 	}
truelight@0: }
truelight@0: 
maedhros@6723: /**
maedhros@6723:  * Given the direction the road depot is pointing, this is the direction the
maedhros@6723:  * vehicle should be travelling in in order to enter the depot.
maedhros@6723:  */
maedhros@6723: static const byte _roadveh_enter_depot_dir[4] = {
maedhros@6723: 	TRACKDIR_X_SW, TRACKDIR_Y_NW, TRACKDIR_X_NE, TRACKDIR_Y_SE
truelight@0: };
truelight@0: 
tron@1977: static uint32 VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y)
truelight@0: {
rubidium@3793: 	switch (GetRoadTileType(tile)) {
rubidium@3793: 		case ROAD_TILE_CROSSING:
rubidium@6259: 			if (v->type == VEH_TRAIN && !IsCrossingBarred(tile)) {
tron@3060: 				/* train crossing a road */
tron@3060: 				SndPlayVehicleFx(SND_0E_LEVEL_CROSSING, v);
celestar@3322: 				BarCrossing(tile);
tron@3060: 				MarkTileDirtyByTile(tile);
truelight@0: 			}
tron@3060: 			break;
tron@3060: 
rubidium@3793: 		case ROAD_TILE_DEPOT:
rubidium@6259: 			if (v->type == VEH_ROAD &&
tron@4077: 					v->u.road.frame == 11 &&
maedhros@6723: 					_roadveh_enter_depot_dir[GetRoadDepotDirection(tile)] == v->u.road.state) {
maedhros@6857: 				v->u.road.state = RVSB_IN_DEPOT;
maedhros@6857: 				v->vehstatus |= VS_HIDDEN;
maedhros@6857: 				v->direction = ReverseDir(v->direction);
rubidium@7492: 				if (v->Next() == NULL) VehicleEnterDepot(v);
maedhros@6857: 				v->tile = tile;
maedhros@6857: 
maedhros@6857: 				InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
rubidium@5991: 				return VETSB_ENTERED_WORMHOLE;
tron@3060: 			}
tron@3060: 			break;
tron@3060: 
tron@3060: 		default: break;
truelight@0: 	}
rubidium@5991: 	return VETSB_CONTINUE;
truelight@0: }
truelight@0: 
truelight@0: 
Darkvater@2436: static void ChangeTileOwner_Road(TileIndex tile, PlayerID old_player, PlayerID new_player)
truelight@0: {
rubidium@6661: 	if (GetRoadTileType(tile) == ROAD_TILE_DEPOT) {
rubidium@6717: 		if (GetTileOwner(tile) == old_player) {
rubidium@6717: 			if (new_player == PLAYER_SPECTATOR) {
rubidium@6717: 				DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
rubidium@6717: 			} else {
rubidium@6717: 				SetTileOwner(tile, new_player);
rubidium@6717: 			}
rubidium@6689: 		}
rubidium@6661: 		return;
truelight@0: 	}
truelight@0: 
rubidium@6661: 	for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
rubidium@6661: 		if (!HASBIT(GetRoadTypes(tile), rt)) continue;
truelight@0: 
rubidium@6661: 		if (GetRoadOwner(tile, rt) == old_player) {
rubidium@6661: 			SetRoadOwner(tile, rt, new_player == PLAYER_SPECTATOR ? OWNER_NONE : new_player);
rubidium@6661: 		}
rubidium@6661: 	}
tron@3060: 
rubidium@6661: 	if (IsLevelCrossing(tile)) {
rubidium@6689: 		if (GetTileOwner(tile) == old_player) {
rubidium@6689: 			if (new_player == PLAYER_SPECTATOR) {
rubidium@6689: 				MakeRoadNormal(tile, GetCrossingRoadBits(tile), GetRoadTypes(tile), GetTownIndex(tile), GetRoadOwner(tile, ROADTYPE_ROAD), GetRoadOwner(tile, ROADTYPE_TRAM), GetRoadOwner(tile, ROADTYPE_HWAY));
rubidium@6689: 			} else {
rubidium@6689: 				SetTileOwner(tile, new_player);
rubidium@6689: 			}
rubidium@6689: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
rubidium@7494: static CommandCost TerraformTile_Road(TileIndex tile, uint32 flags, uint z_new, Slope tileh_new)
rubidium@7494: {
rubidium@7582: 	if (_patches.build_on_slopes && AutoslopeEnabled()) {
rubidium@7582: 		switch (GetRoadTileType(tile)) {
rubidium@7582: 			case ROAD_TILE_CROSSING:
rubidium@7582: 				if (!IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) && HASBIT(VALID_LEVEL_CROSSING_SLOPES, tileh_new)) return _price.terraform;
rubidium@7582: 				break;
rubidium@7582: 
rubidium@7582: 			case ROAD_TILE_DEPOT:
rubidium@7582: 				if (AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, GetRoadDepotDirection(tile))) return _price.terraform;
rubidium@7582: 				break;
rubidium@7582: 
rubidium@7582: 			case ROAD_TILE_NORMAL: {
rubidium@7582: 				RoadBits bits = GetAllRoadBits(tile);
rubidium@7582: 				RoadBits bits_copy = bits;
rubidium@7582: 				/* Check if the slope-road_bits combination is valid at all, i.e. it is save to call GetRoadFoundation(). */
rubidium@7582: 				if (!CmdFailed(CheckRoadSlope(tileh_new, &bits_copy, ROAD_NONE))) {
rubidium@7582: 					/* CheckRoadSlope() sometimes changes the road_bits, if it does not agree with them. */
rubidium@7582: 					if (bits == bits_copy) {
rubidium@7582: 						uint z_old;
rubidium@7582: 						Slope tileh_old = GetTileSlope(tile, &z_old);
rubidium@7582: 
rubidium@7582: 						/* Get the slope on top of the foundation */
rubidium@7582: 						z_old += ApplyFoundationToSlope(GetRoadFoundation(tileh_old, bits), &tileh_old);
rubidium@7582: 						z_new += ApplyFoundationToSlope(GetRoadFoundation(tileh_new, bits), &tileh_new);
rubidium@7582: 
rubidium@7582: 						/* The surface slope must not be changed */
rubidium@7582: 						if ((z_old == z_new) && (tileh_old == tileh_new)) return _price.terraform;
rubidium@7582: 					}
rubidium@7582: 				}
rubidium@7582: 				break;
rubidium@7582: 			}
rubidium@7582: 
rubidium@7582: 			default: NOT_REACHED();
rubidium@7582: 		}
rubidium@7582: 	}
rubidium@7582: 
rubidium@7494: 	return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
rubidium@7494: }
rubidium@7494: 
truelight@0: 
rubidium@5587: extern const TileTypeProcs _tile_type_road_procs = {
rubidium@4344: 	DrawTile_Road,           /* draw_tile_proc */
rubidium@4344: 	GetSlopeZ_Road,          /* get_slope_z_proc */
rubidium@4344: 	ClearTile_Road,          /* clear_tile_proc */
rubidium@4344: 	GetAcceptedCargo_Road,   /* get_accepted_cargo_proc */
rubidium@4344: 	GetTileDesc_Road,        /* get_tile_desc_proc */
rubidium@4344: 	GetTileTrackStatus_Road, /* get_tile_track_status_proc */
rubidium@4344: 	ClickTile_Road,          /* click_tile_proc */
rubidium@4344: 	AnimateTile_Road,        /* animate_tile_proc */
rubidium@4344: 	TileLoop_Road,           /* tile_loop_clear */
rubidium@4344: 	ChangeTileOwner_Road,    /* change_tile_owner_clear */
rubidium@4344: 	NULL,                    /* get_produced_cargo_proc */
rubidium@4344: 	VehicleEnter_Road,       /* vehicle_enter_tile_proc */
rubidium@7335: 	GetFoundation_Road,      /* get_foundation_proc */
rubidium@7494: 	TerraformTile_Road,      /* terraform_tile_proc */
truelight@0: };