tron@2186: /* $Id$ */
tron@2186: 
truelight@0: #include "stdafx.h"
Darkvater@1891: #include "openttd.h"
tron@3101: #include "rail_map.h"
tron@3069: #include "road.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: {
tron@3069: 	RoadBits b;
truelight@0: 
tron@1214: 	switch (GetTileType(tile)) {
tron@3068: 		case MP_STREET:
tron@3069: 			switch (GetRoadType(tile)) {
tron@3069: 				case ROAD_NORMAL:   b = GetRoadBits(tile); break;
tron@3070: 				case ROAD_CROSSING: b = GetCrossingRoadBits(tile); break;
tron@3069: 				case ROAD_DEPOT:    return (~_m[tile].m5 & 3) == i;
tron@3069: 				default:            return false;
tron@3068: 			}
tron@3068: 			break;
truelight@0: 
tron@3068: 		case MP_STATION:
tron@3068: 			return
tron@3068: 				IS_BYTE_INSIDE(_m[tile].m5, 0x43, 0x43 + 8) &&
tron@3068: 				(~(_m[tile].m5 - 0x43) & 3) == i;
truelight@0: 
tron@3068: 		case MP_TUNNELBRIDGE:
tron@3068: 			// bail out, if not a bridge middle part with road underneath
tron@3068: 			if ((_m[tile].m5 & 0xF8) != 0xE8) return false;
tron@3068: 			// road direction perpendicular to bridge
tron@3069: 			b = (_m[tile].m5 & 0x01) ? ROAD_X : ROAD_Y;
tron@3068: 
tron@3068: 		default:
tron@3068: 			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: 
tron@3017: 	if (_game_mode == GM_EDITOR) return true;
truelight@0: 
truelight@0: 	blocks = GetRoadBitsByTile(tile);
tron@3017: 	if (blocks == 0) return true;
truelight@0: 
truelight@0: 	// Only do the special processing for actual players.
tron@3017: 	if (_current_player >= MAX_PLAYERS) 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: 
tron@3017: 	if (_cheats.magic_bulldozer.value) 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
tron@3017: 		if (_patches.extra_dynamite) 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;
tron@3069: 	RoadBits pieces;
truelight@201: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@0: 
Darkvater@1784: 	/* Road pieces are max 4 bitset values (NE, NW, SE, SW) */
tron@3069: 	if (p1 >> 4) return CMD_ERROR;
tron@3069: 	pieces = p1;
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);
tron@3017: 		} else {
tron@2049: 			t = GetTown(_m[tile].m2);
tron@3017: 		}
tron@3017: 	} else {
truelight@1280: 		t = NULL;
tron@3017: 	}
truelight@201: 
truelight@0: 	// allow deleting road under bridge
tron@3017: 	if (ti.type != MP_TUNNELBRIDGE && !EnsureNoVehicle(tile)) 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: 
tron@3060: 	switch (ti.type) {
tron@3060: 		case MP_TUNNELBRIDGE:
tron@3060: 			if (!EnsureNoVehicleZ(tile, TilePixelHeight(tile))) return CMD_ERROR;
truelight@0: 
tron@3060: 			if ((ti.map5 & 0xE9) == 0xE8) {
tron@3069: 				if (pieces & ROAD_X) goto return_error;
tron@3060: 			} else if ((ti.map5 & 0xE9) == 0xE9) {
tron@3069: 				if (pieces & ROAD_Y) goto return_error;
tron@3060: 			} else {
tron@3060: 				goto return_error;
truelight@0: 			}
truelight@0: 
tron@3060: 			cost = _price.remove_road * 2;
truelight@201: 
truelight@0: 			if (flags & DC_EXEC) {
Darkvater@1638: 				ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
tron@3060: 				_m[tile].m5 = ti.map5 & 0xC7;
tron@3060: 				SetTileOwner(tile, OWNER_NONE);
tron@3060: 				MarkTileDirtyByTile(tile);
truelight@0: 			}
truelight@201: 			return cost;
truelight@0: 
tron@3060: 		case MP_STREET:
tron@3060: 			// check if you're allowed to remove the street owned by a town
tron@3060: 			// removal allowance depends on difficulty setting
tron@3060: 			if (!CheckforTownRating(flags, t, ROAD_REMOVE)) return CMD_ERROR;
tron@3060: 
tron@3069: 			switch (GetRoadType(ti.tile)) {
tron@3069: 				case ROAD_NORMAL: {
tron@3060: 					byte c = pieces, t2;
tron@3060: 
tron@3069: 					if (ti.tileh != 0  && (ti.map5 == ROAD_Y || ti.map5 == ROAD_X)) {
tron@3060: 						c |= (c & 0xC) >> 2;
tron@3060: 						c |= (c & 0x3) << 2;
tron@3060: 					}
tron@3060: 
tron@3060: 					// limit the bits to delete to the existing bits.
tron@3060: 					if ((c &= ti.map5) == 0) goto return_error;
tron@3060: 
tron@3060: 					// calculate the cost
tron@3060: 					t2 = c;
tron@3060: 					cost = 0;
tron@3060: 					do {
tron@3060: 						if (t2 & 1) cost += _price.remove_road;
tron@3060: 					} while (t2 >>= 1);
tron@3060: 
tron@3060: 					if (flags & DC_EXEC) {
tron@3060: 						ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
tron@3060: 
tron@3060: 						_m[tile].m5 ^= c;
tron@3098: 						if (GetRoadBits(tile) == 0) {
tron@3060: 							DoClearSquare(tile);
tron@3060: 						} else {
tron@3060: 							MarkTileDirtyByTile(tile);
tron@3060: 						}
tron@3060: 					}
tron@3060: 					return cost;
tron@3060: 				}
tron@3060: 
tron@3069: 				case ROAD_CROSSING: {
tron@3103: 					if (pieces & ComplementRoadBits(GetCrossingRoadBits(tile))) {
tron@3103: 						goto return_error;
tron@3060: 					}
tron@3060: 
tron@3060: 					cost = _price.remove_road * 2;
tron@3060: 					if (flags & DC_EXEC) {
tron@3060: 						ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
tron@3060: 
tron@3103: 						MakeRailNormal(tile, GetTileOwner(tile), GetCrossingRailBits(tile), GB(_m[tile].m4, 0, 4));
tron@3101: 						MarkTileDirtyByTile(tile);
tron@3060: 					}
tron@3060: 					return cost;
tron@3060: 				}
tron@3060: 
tron@3069: 				default:
tron@3069: 				case ROAD_DEPOT:
tron@3060: 					goto return_error;
truelight@0: 			}
truelight@0: 
tron@3060: 		default:
truelight@0: return_error:;
tron@3060: 			return_cmd_error(INVALID_STRING_ID);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: 
tron@3104: static const RoadBits _valid_tileh_slopes_road[][15] = {
truelight@0: 	// set of normal ones
truelight@0: 	{
truelight@0: 		ROAD_ALL, 0, 0,
tron@3098: 		ROAD_X,   0, 0,  // 3, 4, 5
tron@3098: 		ROAD_Y,   0, 0,
tron@3098: 		ROAD_Y,   0, 0,  // 9, 10, 11
tron@3098: 		ROAD_X,   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,
tron@3098: 		ROAD_Y  | ROAD_SW,
truelight@0: 
truelight@0: 		ROAD_SE | ROAD_NE, // 4
truelight@0: 		ROAD_ALL,
tron@3098: 		ROAD_X  | ROAD_SE,
truelight@0: 		ROAD_ALL,
truelight@0: 
truelight@0: 		ROAD_NW | ROAD_NE, // 8
tron@3098: 		ROAD_X  | ROAD_NW,
truelight@0: 		ROAD_ALL,
truelight@0: 		ROAD_ALL,
truelight@0: 
tron@3098: 		ROAD_Y  | ROAD_NE, // 12
truelight@0: 		ROAD_ALL,
truelight@0: 		ROAD_ALL
dominik@13: 	},
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
tron@3017: 		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: 
tron@3060: 	switch (ti.type) {
tron@3060: 		case MP_STREET:
tron@3069: 			switch (GetRoadType(ti.tile)) {
tron@3069: 				case ROAD_NORMAL:
tron@3069: 					if ((GetRoadBits(ti.tile) & pieces) == pieces) {
tron@3066: 						return_cmd_error(STR_1007_ALREADY_BUILT);
tron@3066: 					}
tron@3066: 					existing = ti.map5;
tron@3066: 					break;
tron@3066: 
tron@3069: 				case ROAD_CROSSING:
tron@3103: 					if (pieces != GetCrossingRoadBits(ti.tile)) { // XXX is this correct?
tron@3066: 						return_cmd_error(STR_1007_ALREADY_BUILT);
tron@3066: 					}
tron@3066: 					goto do_clear;
tron@3066: 
tron@3069: 				default:
tron@3069: 				case ROAD_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@3060: 			if (IsSteepTileh(ti.tileh)) { // very steep tile
tron@3060: 				return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
tron@3060: 			}
tron@3060: 
tron@3104: #define M(x) (1 << (x))
tron@3104: 			/* Level crossings may only be built on these slopes */
tron@3104: 			if (!HASBIT(M(14) | M(13) | M(11) | M(10) | M(7) | M(5) | M(0), ti.tileh)) {
tron@3060: 				return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
tron@3060: 			}
tron@3104: #undef M
tron@3060: 
tron@3060: 			if (ti.map5 == 2) {
tron@3069: 				if (pieces & ROAD_Y) goto do_clear;
tron@3099: 				roaddir = AXIS_X;
tron@3060: 			} else if (ti.map5 == 1) {
tron@3069: 				if (pieces & ROAD_X) goto do_clear;
tron@3099: 				roaddir = AXIS_Y;
tron@3060: 			} else {
tron@3060: 				goto do_clear;
tron@3060: 			}
tron@3060: 
tron@3060: 			if (flags & DC_EXEC) {
tron@3099: 				MakeRoadCrossing(tile, _current_player, GetTileOwner(tile), roaddir, GB(_m[tile].m3, 0, 4), p2);
tron@3100: 				MarkTileDirtyByTile(tile);
tron@3060: 			}
tron@3060: 			return _price.build_road * 2;
tron@3017: 		}
truelight@0: 
tron@3060: 		case MP_TUNNELBRIDGE:
tron@3060: 			/* check for flat land */
tron@3060: 			if (IsSteepTileh(ti.tileh)) { // very steep tile
tron@3060: 				return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
tron@3060: 			}
truelight@0: 
tron@3060: 			/* is this middle part of a bridge? */
tron@3060: 			if ((ti.map5 & 0xC0) != 0xC0) goto do_clear;
truelight@0: 
tron@3060: 			/* only allow roads pertendicular to bridge */
tron@3060: 			if (((pieces & 5U) != 0) == ((ti.map5 & 0x01U) != 0)) goto do_clear;
tron@3060: 
tron@3060: 			/* check if clear land under bridge */
tron@3060: 			if ((ti.map5 & 0xF8) == 0xE8) { /* road under bridge */
tron@3060: 				return_cmd_error(STR_1007_ALREADY_BUILT);
tron@3060: 			} else if ((ti.map5 & 0xE0) == 0xE0) { /* other transport route under bridge */
tron@3060: 				return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK);
tron@3060: 			} else if ((ti.map5 & 0xF8) == 0xC8) { /* water under bridge */
tron@3060: 				return_cmd_error(STR_3807_CAN_T_BUILD_ON_WATER);
tron@3060: 			}
tron@3060: 
tron@3060: 			/* all checked, can build road now! */
tron@3060: 			cost = _price.build_road * 2;
tron@3060: 			if (flags & DC_EXEC) {
tron@3060: 				ModifyTile(tile,
tron@3060: 					MP_MAPOWNER_CURRENT | MP_MAP5,
tron@3060: 					(ti.map5 & 0xC7) | 0x28 // map5
tron@3060: 				);
tron@3060: 			}
tron@3060: 			return cost;
tron@3060: 
tron@3060: 		default:
truelight@0: do_clear:;
tron@3060: 			if (CmdFailed(DoCommandByTile(tile, 0, 0, flags & ~DC_EXEC, CMD_LANDSCAPE_CLEAR)))
tron@3060: 				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@3069: 	if (ti.type != MP_STREET || GetRoadType(ti.tile) != ROAD_NORMAL) {
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@3099: 			MakeRoadNormal(tile, _current_player, pieces, p2);
tron@3099: 		} else {
tron@3099: 			_m[tile].m5 |= pieces;
truelight@0: 		}
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 (;;) {
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: 
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;
tron@3017: 		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 (;;) {
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: 
truelight@0: 		// try to remove the halves.
tron@3098: 		if (bits != 0) {
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: 	int32 cost;
truelight@0: 	Depot *dep;
Darkvater@1784: 	TileIndex tile;
tron@3055: 	uint tileh;
truelight@0: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@0: 
Darkvater@1785: 	if (p1 > 3) return CMD_ERROR; // check direction
Darkvater@1784: 
tron@3055: 	tile = TileVirtXY(x, y);
truelight@0: 
tron@2549: 	if (!EnsureNoVehicle(tile)) return CMD_ERROR;
truelight@0: 
tron@3055: 	tileh = GetTileSlope(tile, NULL);
tron@3055: 	if (tileh != 0 && (
tron@2549: 				!_patches.build_on_slopes ||
tron@3055: 				IsSteepTileh(tileh) ||
tron@3055: 				!CanBuildDepotByTileh(p1, 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: 
tron@3099: 		MakeRoadDepot(tile, _current_player, p1);
tron@3100: 		MarkTileDirtyByTile(tile);
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: {
tron@3069: 	switch (GetRoadType(tile)) {
tron@3069: 		case ROAD_NORMAL: {
tron@3069: 			RoadBits b = GetRoadBits(tile);
truelight@0: 
tron@3060: 			if (!((1 << b) & (M(1)|M(2)|M(4)|M(8))) &&
tron@3060: 					(!(flags & DC_AI_BUILDING) || !IsTileOwner(tile, OWNER_TOWN)) &&
tron@3060: 					flags & DC_AUTO) {
truelight@0: 				return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
tron@3060: 			}
tron@3060: 			return DoCommandByTile(tile, b, 0, flags, CMD_REMOVE_ROAD);
truelight@201: 		}
truelight@0: 
tron@3069: 		case ROAD_CROSSING: {
tron@3060: 			int32 ret;
tron@3060: 
tron@3069: 			if (flags & DC_AUTO) return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
tron@3060: 
tron@3070: 			ret = DoCommandByTile(tile, GetCrossingRoadBits(tile), 0, flags, CMD_REMOVE_ROAD);
tron@3060: 			if (CmdFailed(ret)) return CMD_ERROR;
tron@3060: 
tron@3060: 			if (flags & DC_EXEC) {
tron@3060: 				DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
tron@3060: 			}
tron@3060: 			return ret;
tron@3060: 		}
tron@3060: 
tron@3069: 		default:
tron@3069: 		case ROAD_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: 
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@3098: uint GetRoadFoundation(uint tileh, RoadBits bits)
tron@2548: {
truelight@0: 	int i;
truelight@0: 	// normal level sloped building
tron@3017: 	if ((~_valid_tileh_slopes_road[1][tileh] & bits) == 0) return tileh;
truelight@0: 
truelight@0: 	// inclined sloped building
tron@3017: 	if ((
tron@3017: 				(i  = 0, tileh == 1) ||
tron@3017: 				(i += 2, tileh == 2) ||
tron@3017: 				(i += 2, tileh == 4) ||
tron@3017: 				(i += 2, tileh == 8)
tron@3017: 			) && (
tron@3098: 				(     bits == ROAD_X) ||
tron@3098: 				(i++, bits == ROAD_Y)
tron@3017: 			)) {
truelight@0: 		return i + 15;
tron@3017: 	}
truelight@0: 
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@3098: static void DrawRoadBits(TileInfo* ti, RoadBits 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
tron@3098: 		DrawGroundSprite(road & ROAD_X ? SPR_EXCAVATION_X : SPR_EXCAVATION_Y);
peter1138@2471: 		return;
peter1138@2471: 	}
peter1138@2471: 
peter1138@2471: 	// Draw extra details.
tron@3017: 	for (drts = _road_display_table[ground_type][road]; drts->image != 0; drts++) {
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);
tron@3017: 		AddSortableSpriteToDraw(drts->image, x, y, 2, 2, 0x10, z);
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: 
tron@3098: 	switch (GetRoadType(ti->tile)) {
tron@3098: 		case ROAD_NORMAL:
tron@3098: 			DrawRoadBits(ti, GetRoadBits(ti->tile), GB(_m[ti->tile].m4, 4, 3), HASBIT(_m[ti->tile].m4, 7), false);
tron@3060: 			break;
truelight@0: 
tron@3098: 		case ROAD_CROSSING: {
tron@3097: 			if (ti->tileh != 0) DrawFoundation(ti, ti->tileh);
truelight@0: 
tron@3060: 			image = GetRailTypeInfo(GB(_m[ti->tile].m4, 0, 4))->base_sprites.crossing;
tron@3060: 
tron@3060: 			if (GB(ti->map5, 3, 1) == 0) image++; /* direction */
tron@3060: 
tron@3060: 			if ((ti->map5 & 4) != 0) image += 2;
tron@3060: 
tron@3060: 			if ( _m[ti->tile].m4 & 0x80) {
tron@3060: 				image += 8;
tron@3060: 			} else {
tron@3060: 				m2 = GB(_m[ti->tile].m4, 4, 3);
tron@3060: 				if (m2 == 0) image |= PALETTE_TO_BARE_LAND;
tron@3060: 				if (m2 > 1) image += 4;
tron@3060: 			}
tron@3060: 
tron@3060: 			DrawGroundSprite(image);
tron@3060: 			break;
truelight@0: 		}
truelight@0: 
tron@3098: 		default:
tron@3098: 		case ROAD_DEPOT: {
tron@3060: 			uint32 ormod;
tron@3060: 			PlayerID player;
tron@3060: 			const DrawRoadSeqStruct* drss;
truelight@0: 
tron@3060: 			if (ti->tileh != 0) DrawFoundation(ti, ti->tileh);
tron@1398: 
tron@3060: 			ormod = PALETTE_TO_GREY;	//was this a bug/problem?
tron@3060: 			player = GetTileOwner(ti->tile);
tron@3060: 			if (player < MAX_PLAYERS) ormod = PLAYER_SPRITE_COLOR(player);
truelight@0: 
tron@3060: 			drss = _road_display_datas[ti->map5 & 0xF];
tron@3060: 
tron@3060: 			DrawGroundSprite(drss++->image);
tron@3060: 
tron@3060: 			for (; drss->image != 0; drss++) {
tron@3060: 				uint32 image = drss->image;
tron@3060: 
tron@3060: 				if (image & PALETTE_MODIFIER_COLOR) image |= ormod;
tron@3060: 				if (_display_opt & DO_TRANS_BUILDINGS) MAKE_TRANSPARENT(image);
tron@3060: 
tron@3060: 				AddSortableSpriteToDraw(image, ti->x | drss->subcoord_x,
tron@3060: 					ti->y | drss->subcoord_y, drss->width, drss->height, 0x14, ti->z
tron@3060: 				);
tron@3060: 			}
tron@3060: 			break;
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@2952: 	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) {
tron@3098: 		switch (GetRoadType(ti->tile)) {
tron@3098: 			case ROAD_NORMAL: {
tron@3098: 				uint f = GetRoadFoundation(ti->tileh, GetRoadBits(ti->tile));
tron@3098: 
tron@3060: 				if (f != 0) {
tron@3060: 					if (f < 15) {
tron@3060: 						// leveled foundation
tron@3060: 						return z + 8;
tron@3060: 					}
tron@3060: 					// inclined foundation
tron@3060: 					th = _inclined_tileh[f - 15];
truelight@0: 				}
tron@3060: 				break;
truelight@0: 			}
tron@3060: 
tron@3097: 			// if these are on a slope then there's a level foundation
tron@3098: 			case ROAD_DEPOT:
tron@3098: 			case ROAD_CROSSING:
tron@3060: 				return z + 8;
tron@3060: 
tron@3060: 			default: break;
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) {
tron@3098: 		switch (GetRoadType(ti->tile)) {
tron@3098: 			case ROAD_NORMAL: {
tron@3098: 				uint f = GetRoadFoundation(ti->tileh, GetRoadBits(ti->tile));
tron@3098: 
tron@3060: 				if (f != 0) {
tron@3060: 					if (f < 15) {
tron@3060: 						// leveled foundation
tron@3060: 						return 0;
tron@3060: 					}
tron@3060: 					// inclined foundation
tron@3060: 					return _inclined_tileh[f - 15];
dominik@39: 				}
tron@3060: 				break;
dominik@39: 			}
tron@3060: 
tron@3097: 			// if these are on a slope then there's a level foundation
tron@3098: 			case ROAD_CROSSING:
tron@3098: 			case ROAD_DEPOT:
tron@3060: 				return 0;
tron@3060: 
tron@3060: 			default: break;
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: 
tron@3017: 	switch (_opt.landscape) {
tron@3017: 		case LT_HILLY:
tron@3017: 			if ((_m[tile].m4 & 0x80) != (GetTileZ(tile) > _opt.snow_line ? 0x80 : 0x00)) {
tron@3017: 				_m[tile].m4 ^= 0x80;
tron@3017: 				MarkTileDirtyByTile(tile);
tron@3017: 			}
tron@3017: 			break;
tron@3017: 
tron@3017: 		case LT_DESERT:
tron@3017: 			if (GetMapExtraBits(tile) == 1 && !(_m[tile].m4 & 0x80)) {
tron@3017: 				_m[tile].m4 |= 0x80;
tron@3017: 				MarkTileDirtyByTile(tile);
tron@3017: 			}
tron@3017: 			break;
truelight@0: 	}
truelight@0: 
tron@3069: 	if (GetRoadType(tile) == ROAD_DEPOT) 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@3069: 					(_m[tile].m5 == ROAD_Y || _m[tile].m5 == ROAD_X)) {
tron@3017: 				if (GetTileSlope(tile, NULL) == 0 && EnsureNoVehicle(tile) && CHANCE16(1, 20)) {
tron@3091: 					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: 
tron@3017: 			if (b == p[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@3069: 	if (GetRoadType(tile) == ROAD_DEPOT) 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: {
tron@3066: 	switch (mode) {
tron@3066: 		case TRANSPORT_RAIL:
tron@3066: 			if (!IsLevelCrossing(tile)) return 0;
tron@3066: 			return _m[tile].m5 & 8 ? 0x101 : 0x202;
truelight@201: 
tron@3066: 		case TRANSPORT_ROAD:
tron@3071: 			switch (GetRoadType(tile)) {
tron@3069: 				case ROAD_NORMAL:
tron@3069: 					return !_road_special_gettrackstatus && GB(_m[tile].m4, 4, 3) >= 6 ?
tron@3069: 						0 : _road_trackbits[GetRoadBits(tile)] * 0x101;
tron@3066: 
tron@3069: 				case ROAD_CROSSING: {
tron@3066: 					uint32 r = (_m[tile].m5 & 8 ? 0x202 : 0x101);
tron@3066: 					if (_m[tile].m5 & 4) r *= 0x10001;
tron@3066: 					return r;
tron@3066: 				}
tron@3066: 
tron@3069: 				default:
tron@3069: 				case ROAD_DEPOT:
tron@3066: 					break;
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);
tron@3069: 	switch (GetRoadType(tile)) {
tron@3069: 		case ROAD_CROSSING: td->str = STR_1818_ROAD_RAIL_LEVEL_CROSSING; break;
tron@3069: 		case ROAD_DEPOT: td->str = STR_1817_ROAD_VEHICLE_DEPOT; break;
tron@3069: 		default: td->str = _road_tile_strings[GB(_m[tile].m4, 4, 3)]; break;
tron@3069: 	}
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: {
tron@3069: 	switch (GetRoadType(tile)) {
tron@3069: 		case ROAD_CROSSING:
tron@3060: 			if (v->type == VEH_Train && GB(_m[tile].m5, 2, 1) == 0) {
tron@3060: 				/* train crossing a road */
tron@3060: 				SndPlayVehicleFx(SND_0E_LEVEL_CROSSING, v);
tron@3060: 				SB(_m[tile].m5, 2, 1, 1);
tron@3060: 				MarkTileDirtyByTile(tile);
truelight@0: 			}
tron@3060: 			break;
tron@3060: 
tron@3069: 		case ROAD_DEPOT:
tron@3060: 			if (v->type == VEH_Road && v->u.road.frame == 11) {
tron@3060: 				if (_roadveh_enter_depot_unk0[GB(_m[tile].m5, 0, 2)] == v->u.road.state) {
tron@3060: 					RoadVehEnterDepot(v);
tron@3060: 					return 4;
tron@3060: 				}
tron@3060: 			}
tron@3060: 			break;
tron@3060: 
tron@3060: 		default: break;
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@3069: 		switch (GetRoadType(tile)) {
tron@3069: 			case ROAD_NORMAL:
tron@3060: 				SetTileOwner(tile, OWNER_NONE);
tron@3060: 				break;
tron@3060: 
tron@3069: 			case ROAD_CROSSING:
tron@3099: 				MakeRoadNormal(tile, _m[tile].m3, GetCrossingRoadBits(tile), _m[tile].m2);
tron@3060: 				break;
tron@3060: 
tron@3069: 			default:
tron@3069: 			case ROAD_DEPOT:
tron@3060: 				DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
tron@3060: 				break;
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: };