--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/road_cmd.cpp Wed Jan 10 18:12:09 2007 +0000
@@ -0,0 +1,1065 @@
+/* $Id$ */
+
+#include "stdafx.h"
+#include "openttd.h"
+#include "bridge_map.h"
+#include "rail_map.h"
+#include "road_map.h"
+#include "sprite.h"
+#include "table/sprites.h"
+#include "table/strings.h"
+#include "functions.h"
+#include "map.h"
+#include "tile.h"
+#include "town_map.h"
+#include "vehicle.h"
+#include "viewport.h"
+#include "command.h"
+#include "player.h"
+#include "town.h"
+#include "gfx.h"
+#include "sound.h"
+#include "yapf/yapf.h"
+#include "depot.h"
+
+
+static uint CountRoadBits(RoadBits r)
+{
+ uint count = 0;
+
+ if (r & ROAD_NW) ++count;
+ if (r & ROAD_SW) ++count;
+ if (r & ROAD_SE) ++count;
+ if (r & ROAD_NE) ++count;
+ return count;
+}
+
+
+static bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, bool* edge_road)
+{
+ RoadBits present;
+ RoadBits n;
+ Owner owner;
+ *edge_road = true;
+
+ if (_game_mode == GM_EDITOR) return true;
+
+ // Only do the special processing for actual players.
+ if (!IsValidPlayer(_current_player)) return true;
+
+ owner = IsLevelCrossingTile(tile) ? GetCrossingRoadOwner(tile) : GetTileOwner(tile);
+
+ // Only do the special processing if the road is owned
+ // by a town
+ if (owner != OWNER_TOWN) return (owner == OWNER_NONE) || CheckOwnership(owner);
+
+ if (_cheats.magic_bulldozer.value) return true;
+
+ // Get a bitmask of which neighbouring roads has a tile
+ n = 0;
+ present = GetAnyRoadBits(tile);
+ if (present & ROAD_NE && GetAnyRoadBits(TILE_ADDXY(tile,-1, 0)) & ROAD_SW) n |= ROAD_NE;
+ if (present & ROAD_SE && GetAnyRoadBits(TILE_ADDXY(tile, 0, 1)) & ROAD_NW) n |= ROAD_SE;
+ if (present & ROAD_SW && GetAnyRoadBits(TILE_ADDXY(tile, 1, 0)) & ROAD_NE) n |= ROAD_SW;
+ if (present & ROAD_NW && GetAnyRoadBits(TILE_ADDXY(tile, 0,-1)) & ROAD_SE) n |= ROAD_NW;
+
+ // If 0 or 1 bits are set in n, or if no bits that match the bits to remove,
+ // then allow it
+ if ((n & (n - 1)) != 0 && (n & remove) != 0) {
+ Town *t;
+ *edge_road = false;
+ // you can remove all kind of roads with extra dynamite
+ if (_patches.extra_dynamite) return true;
+
+ t = ClosestTownFromTile(tile, _patches.dist_local_authority);
+
+ SetDParam(0, t->index);
+ _error_message = STR_2009_LOCAL_AUTHORITY_REFUSES;
+ return false;
+ }
+
+ return true;
+}
+
+
+/** Delete a piece of road.
+ * @param tile tile where to remove road from
+ * @param p1 road piece flags
+ * @param p2 unused
+ */
+int32 CmdRemoveRoad(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
+{
+ // cost for removing inner/edge -roads
+ static const uint16 road_remove_cost[2] = {50, 18};
+
+ Owner owner;
+ Town *t;
+ /* true if the roadpiece was always removeable,
+ * false if it was a center piece. Affects town ratings drop */
+ bool edge_road;
+ RoadBits pieces;
+
+ SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
+
+ /* Road pieces are max 4 bitset values (NE, NW, SE, SW) */
+ if (p1 >> 4) return CMD_ERROR;
+ pieces = p1;
+
+ if (!IsTileType(tile, MP_STREET)) return CMD_ERROR;
+
+ owner = IsLevelCrossingTile(tile) ? GetCrossingRoadOwner(tile) : GetTileOwner(tile);
+
+ if (owner == OWNER_TOWN && _game_mode != GM_EDITOR) {
+ t = GetTownByTile(tile);
+ } else {
+ t = NULL;
+ }
+
+ if (!CheckAllowRemoveRoad(tile, pieces, &edge_road)) return CMD_ERROR;
+
+ if (!EnsureNoVehicle(tile)) return CMD_ERROR;
+
+ // check if you're allowed to remove the street owned by a town
+ // removal allowance depends on difficulty setting
+ if (!CheckforTownRating(flags, t, ROAD_REMOVE)) return CMD_ERROR;
+
+ switch (GetRoadTileType(tile)) {
+ case ROAD_TILE_NORMAL: {
+ RoadBits present = GetRoadBits(tile);
+ RoadBits c = pieces;
+
+ if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
+
+ if (GetTileSlope(tile, NULL) != SLOPE_FLAT &&
+ (present == ROAD_Y || present == ROAD_X)) {
+ c |= (c & 0xC) >> 2;
+ c |= (c & 0x3) << 2;
+ }
+
+ // limit the bits to delete to the existing bits.
+ c &= present;
+ if (c == 0) return CMD_ERROR;
+
+ if (flags & DC_EXEC) {
+ ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
+
+ present ^= c;
+ if (present == 0) {
+ DoClearSquare(tile);
+ } else {
+ SetRoadBits(tile, present);
+ MarkTileDirtyByTile(tile);
+ }
+ }
+ return CountRoadBits(c) * _price.remove_road;
+ }
+
+ case ROAD_TILE_CROSSING: {
+ if (pieces & ComplementRoadBits(GetCrossingRoadBits(tile))) {
+ return CMD_ERROR;
+ }
+
+ if (flags & DC_EXEC) {
+ ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
+
+ MakeRailNormal(tile, GetTileOwner(tile), GetCrossingRailBits(tile), GetRailTypeCrossing(tile));
+ MarkTileDirtyByTile(tile);
+ YapfNotifyTrackLayoutChange(tile, FIND_FIRST_BIT(GetTrackBits(tile)));
+ }
+ return _price.remove_road * 2;
+ }
+
+ default:
+ case ROAD_TILE_DEPOT:
+ return CMD_ERROR;
+ }
+}
+
+
+static const RoadBits _valid_tileh_slopes_road[][15] = {
+ // set of normal ones
+ {
+ ROAD_ALL, 0, 0,
+ ROAD_X, 0, 0, // 3, 4, 5
+ ROAD_Y, 0, 0,
+ ROAD_Y, 0, 0, // 9, 10, 11
+ ROAD_X, 0, 0
+ },
+ // allowed road for an evenly raised platform
+ {
+ 0,
+ ROAD_SW | ROAD_NW,
+ ROAD_SW | ROAD_SE,
+ ROAD_Y | ROAD_SW,
+
+ ROAD_SE | ROAD_NE, // 4
+ ROAD_ALL,
+ ROAD_X | ROAD_SE,
+ ROAD_ALL,
+
+ ROAD_NW | ROAD_NE, // 8
+ ROAD_X | ROAD_NW,
+ ROAD_ALL,
+ ROAD_ALL,
+
+ ROAD_Y | ROAD_NE, // 12
+ ROAD_ALL,
+ ROAD_ALL
+ },
+};
+
+
+static uint32 CheckRoadSlope(Slope tileh, RoadBits* pieces, RoadBits existing)
+{
+ RoadBits road_bits;
+
+ if (IsSteepSlope(tileh)) {
+ if (existing == 0) {
+ // force full pieces.
+ *pieces |= (*pieces & 0xC) >> 2;
+ *pieces |= (*pieces & 0x3) << 2;
+ if (*pieces == ROAD_X || *pieces == ROAD_Y) return _price.terraform;
+ }
+ return CMD_ERROR;
+ }
+ road_bits = *pieces | existing;
+
+ // no special foundation
+ if ((~_valid_tileh_slopes_road[0][tileh] & road_bits) == 0) {
+ // force that all bits are set when we have slopes
+ if (tileh != SLOPE_FLAT) *pieces |= _valid_tileh_slopes_road[0][tileh];
+ return 0; // no extra cost
+ }
+
+ // foundation is used. Whole tile is leveled up
+ if ((~_valid_tileh_slopes_road[1][tileh] & road_bits) == 0) {
+ return existing != 0 ? 0 : _price.terraform;
+ }
+
+ // partly leveled up tile, only if there's no road on that tile
+ if (existing == 0 && (tileh == SLOPE_W || tileh == SLOPE_S || tileh == SLOPE_E || tileh == SLOPE_N)) {
+ // force full pieces.
+ *pieces |= (*pieces & 0xC) >> 2;
+ *pieces |= (*pieces & 0x3) << 2;
+ if (*pieces == ROAD_X || *pieces == ROAD_Y) return _price.terraform;
+ }
+ return CMD_ERROR;
+}
+
+/** Build a piece of road.
+ * @param tile tile where to build road
+ * @param p1 road piece flags
+ * @param p2 the town that is building the road (0 if not applicable)
+ */
+int32 CmdBuildRoad(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
+{
+ int32 cost = 0;
+ int32 ret;
+ RoadBits existing = 0;
+ RoadBits pieces;
+ Slope tileh;
+
+ SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
+
+ /* Road pieces are max 4 bitset values (NE, NW, SE, SW) and town can only be non-zero
+ * if a non-player is building the road */
+ if ((p1 >> 4) || (IsValidPlayer(_current_player) && p2 != 0) || !IsValidTownID(p2)) return CMD_ERROR;
+ pieces = p1;
+
+ tileh = GetTileSlope(tile, NULL);
+
+ switch (GetTileType(tile)) {
+ case MP_STREET:
+ switch (GetRoadTileType(tile)) {
+ case ROAD_TILE_NORMAL:
+ if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
+
+ existing = GetRoadBits(tile);
+ if ((existing & pieces) == pieces) {
+ return_cmd_error(STR_1007_ALREADY_BUILT);
+ }
+ if (!EnsureNoVehicle(tile)) return CMD_ERROR;
+ break;
+
+ case ROAD_TILE_CROSSING:
+ if (pieces != GetCrossingRoadBits(tile)) { // XXX is this correct?
+ return_cmd_error(STR_1007_ALREADY_BUILT);
+ }
+ goto do_clear;
+
+ default:
+ case ROAD_TILE_DEPOT:
+ goto do_clear;
+ }
+ break;
+
+ case MP_RAILWAY: {
+ Axis roaddir;
+
+ if (IsSteepSlope(tileh)) {
+ return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
+ }
+
+#define M(x) (1 << (x))
+ /* Level crossings may only be built on these slopes */
+ if (!HASBIT(M(SLOPE_SEN) | M(SLOPE_ENW) | M(SLOPE_NWS) | M(SLOPE_NS) | M(SLOPE_WSE) | M(SLOPE_EW) | M(SLOPE_FLAT), tileh)) {
+ return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
+ }
+#undef M
+
+ if (GetRailTileType(tile) != RAIL_TILE_NORMAL) goto do_clear;
+ switch (GetTrackBits(tile)) {
+ case TRACK_BIT_X:
+ if (pieces & ROAD_X) goto do_clear;
+ roaddir = AXIS_Y;
+ break;
+
+ case TRACK_BIT_Y:
+ if (pieces & ROAD_Y) goto do_clear;
+ roaddir = AXIS_X;
+ break;
+
+ default: goto do_clear;
+ }
+
+ if (!EnsureNoVehicle(tile)) return CMD_ERROR;
+
+ if (flags & DC_EXEC) {
+ YapfNotifyTrackLayoutChange(tile, FIND_FIRST_BIT(GetTrackBits(tile)));
+ MakeRoadCrossing(tile, _current_player, GetTileOwner(tile), roaddir, GetRailType(tile), p2);
+ MarkTileDirtyByTile(tile);
+ }
+ return _price.build_road * 2;
+ }
+
+ default:
+do_clear:;
+ ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
+ if (CmdFailed(ret)) return ret;
+ cost += ret;
+ }
+
+ ret = CheckRoadSlope(tileh, &pieces, existing);
+ /* Return an error if we need to build a foundation (ret != 0) but the
+ * current patch-setting is turned off (or stupid AI@work) */
+ if (CmdFailed(ret) || (ret != 0 && (!_patches.build_on_slopes || _is_old_ai_player)))
+ return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
+
+ cost += ret;
+
+ if (IsTileType(tile, MP_STREET)) {
+ // Don't put the pieces that already exist
+ pieces &= ComplementRoadBits(existing);
+ }
+
+ cost += CountRoadBits(pieces) * _price.build_road;
+
+ if (flags & DC_EXEC) {
+ if (IsTileType(tile, MP_STREET)) {
+ SetRoadBits(tile, existing | pieces);
+ } else {
+ MakeRoadNormal(tile, _current_player, pieces, p2);
+ }
+
+ MarkTileDirtyByTile(tile);
+ }
+ return cost;
+}
+
+int32 DoConvertStreetRail(TileIndex tile, RailType totype, bool exec)
+{
+ // not a railroad crossing?
+ if (!IsLevelCrossing(tile)) return CMD_ERROR;
+
+ // not owned by me?
+ if (!CheckTileOwnership(tile) || !EnsureNoVehicle(tile)) return CMD_ERROR;
+
+ if (GetRailTypeCrossing(tile) == totype) return CMD_ERROR;
+
+ // 'hidden' elrails can't be downgraded to normal rail when elrails are disabled
+ if (_patches.disable_elrails && totype == RAILTYPE_RAIL && GetRailTypeCrossing(tile) == RAILTYPE_ELECTRIC) return CMD_ERROR;
+
+ if (exec) {
+ SetRailTypeCrossing(tile, totype);
+ MarkTileDirtyByTile(tile);
+ YapfNotifyTrackLayoutChange(tile, FIND_FIRST_BIT(GetCrossingRailBits(tile)));
+ }
+
+ return _price.build_rail >> 1;
+}
+
+
+/** Build a long piece of road.
+ * @param end_tile end tile of drag
+ * @param p1 start tile of drag
+ * @param p2 various bitstuffed elements
+ * - p2 = (bit 0) - start tile starts in the 2nd half of tile (p2 & 1)
+ * - p2 = (bit 1) - end tile starts in the 2nd half of tile (p2 & 2)
+ * - p2 = (bit 2) - direction: 0 = along x-axis, 1 = along y-axis (p2 & 4)
+ */
+int32 CmdBuildLongRoad(TileIndex end_tile, uint32 flags, uint32 p1, uint32 p2)
+{
+ TileIndex start_tile, tile;
+ int32 cost, ret;
+
+ SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
+
+ if (p1 >= MapSize()) return CMD_ERROR;
+
+ start_tile = p1;
+
+ /* Only drag in X or Y direction dictated by the direction variable */
+ if (!HASBIT(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
+ if (HASBIT(p2, 2) && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
+
+ /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
+ if (start_tile > end_tile || (start_tile == end_tile && HASBIT(p2, 0))) {
+ TileIndex t = start_tile;
+ start_tile = end_tile;
+ end_tile = t;
+ p2 ^= IS_INT_INSIDE(p2&3, 1, 3) ? 3 : 0;
+ }
+
+ cost = 0;
+ tile = start_tile;
+ // Start tile is the small number.
+ for (;;) {
+ RoadBits bits = HASBIT(p2, 2) ? ROAD_Y : ROAD_X;
+
+ if (tile == end_tile && !HASBIT(p2, 1)) bits &= ROAD_NW | ROAD_NE;
+ if (tile == start_tile && HASBIT(p2, 0)) bits &= ROAD_SE | ROAD_SW;
+
+ ret = DoCommand(tile, bits, 0, flags, CMD_BUILD_ROAD);
+ if (CmdFailed(ret)) {
+ if (_error_message != STR_1007_ALREADY_BUILT) return CMD_ERROR;
+ _error_message = INVALID_STRING_ID;
+ } else {
+ cost += ret;
+ }
+
+ if (tile == end_tile) break;
+
+ tile += HASBIT(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
+ }
+
+ return (cost == 0) ? CMD_ERROR : cost;
+}
+
+/** Remove a long piece of road.
+ * @param end_tile end tile of drag
+ * @param p1 start tile of drag
+ * @param p2 various bitstuffed elements
+ * - p2 = (bit 0) - start tile starts in the 2nd half of tile (p2 & 1)
+ * - p2 = (bit 1) - end tile starts in the 2nd half of tile (p2 & 2)
+ * - p2 = (bit 2) - direction: 0 = along x-axis, 1 = along y-axis (p2 & 4)
+ */
+int32 CmdRemoveLongRoad(TileIndex end_tile, uint32 flags, uint32 p1, uint32 p2)
+{
+ TileIndex start_tile, tile;
+ int32 cost, ret;
+
+ SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
+
+ if (p1 >= MapSize()) return CMD_ERROR;
+
+ start_tile = p1;
+
+ /* Only drag in X or Y direction dictated by the direction variable */
+ if (!HASBIT(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
+ if (HASBIT(p2, 2) && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
+
+ /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
+ if (start_tile > end_tile || (start_tile == end_tile && HASBIT(p2, 0))) {
+ TileIndex t = start_tile;
+ start_tile = end_tile;
+ end_tile = t;
+ p2 ^= IS_INT_INSIDE(p2 & 3, 1, 3) ? 3 : 0;
+ }
+
+ cost = 0;
+ tile = start_tile;
+ // Start tile is the small number.
+ for (;;) {
+ RoadBits bits = HASBIT(p2, 2) ? ROAD_Y : ROAD_X;
+
+ if (tile == end_tile && !HASBIT(p2, 1)) bits &= ROAD_NW | ROAD_NE;
+ if (tile == start_tile && HASBIT(p2, 0)) bits &= ROAD_SE | ROAD_SW;
+
+ // try to remove the halves.
+ if (bits != 0) {
+ ret = DoCommand(tile, bits, 0, flags, CMD_REMOVE_ROAD);
+ if (!CmdFailed(ret)) cost += ret;
+ }
+
+ if (tile == end_tile) break;
+
+ tile += HASBIT(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
+ }
+
+ return (cost == 0) ? CMD_ERROR : cost;
+}
+
+/** Build a road depot.
+ * @param tile tile where to build the depot
+ * @param p1 entrance direction (DiagDirection)
+ * @param p2 unused
+ *
+ * @todo When checking for the tile slope,
+ * distingush between "Flat land required" and "land sloped in wrong direction"
+ */
+int32 CmdBuildRoadDepot(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
+{
+ int32 cost;
+ Depot *dep;
+ Slope tileh;
+
+ SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
+
+ if (p1 > 3) return CMD_ERROR; // check direction
+
+ if (!EnsureNoVehicle(tile)) return CMD_ERROR;
+
+ tileh = GetTileSlope(tile, NULL);
+ if (tileh != SLOPE_FLAT && (
+ !_patches.build_on_slopes ||
+ IsSteepSlope(tileh) ||
+ !CanBuildDepotByTileh(p1, tileh)
+ )) {
+ return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
+ }
+
+ cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
+ if (CmdFailed(cost)) return CMD_ERROR;
+
+ if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST);
+
+ dep = AllocateDepot();
+ if (dep == NULL) return CMD_ERROR;
+
+ if (flags & DC_EXEC) {
+ dep->xy = tile;
+ dep->town_index = ClosestTownFromTile(tile, (uint)-1)->index;
+
+ MakeRoadDepot(tile, _current_player, p1);
+ MarkTileDirtyByTile(tile);
+ }
+ return cost + _price.build_road_depot;
+}
+
+static int32 RemoveRoadDepot(TileIndex tile, uint32 flags)
+{
+ if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER)
+ return CMD_ERROR;
+
+ if (!EnsureNoVehicle(tile)) return CMD_ERROR;
+
+ if (flags & DC_EXEC) DeleteDepot(GetDepotByTile(tile));
+
+ return _price.remove_road_depot;
+}
+
+#define M(x) (1<<(x))
+
+static int32 ClearTile_Road(TileIndex tile, byte flags)
+{
+ switch (GetRoadTileType(tile)) {
+ case ROAD_TILE_NORMAL: {
+ RoadBits b = GetRoadBits(tile);
+
+ if (!((1 << b) & (M(1)|M(2)|M(4)|M(8))) &&
+ (!(flags & DC_AI_BUILDING) || !IsTileOwner(tile, OWNER_TOWN)) &&
+ flags & DC_AUTO) {
+ return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
+ }
+ return DoCommand(tile, b, 0, flags, CMD_REMOVE_ROAD);
+ }
+
+ case ROAD_TILE_CROSSING: {
+ int32 ret;
+
+ if (flags & DC_AUTO) return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
+
+ ret = DoCommand(tile, GetCrossingRoadBits(tile), 0, flags, CMD_REMOVE_ROAD);
+ if (CmdFailed(ret)) return CMD_ERROR;
+
+ if (flags & DC_EXEC) {
+ DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
+ }
+ return ret;
+ }
+
+ default:
+ case ROAD_TILE_DEPOT:
+ if (flags & DC_AUTO) {
+ return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
+ }
+ return RemoveRoadDepot(tile, flags);
+ }
+}
+
+
+typedef struct DrawRoadTileStruct {
+ uint16 image;
+ byte subcoord_x;
+ byte subcoord_y;
+} DrawRoadTileStruct;
+
+#include "table/road_land.h"
+
+
+uint GetRoadFoundation(Slope tileh, RoadBits bits)
+{
+ uint i;
+
+ // normal level sloped building
+ if (!IsSteepSlope(tileh) &&
+ (~_valid_tileh_slopes_road[1][tileh] & bits) == 0) {
+ return tileh;
+ }
+
+ // inclined sloped building
+ switch (bits) {
+ case ROAD_X: i = 0; break;
+ case ROAD_Y: i = 1; break;
+ default: return 0;
+ }
+ switch (tileh) {
+ case SLOPE_W:
+ case SLOPE_STEEP_W: i += 0; break;
+ case SLOPE_S:
+ case SLOPE_STEEP_S: i += 2; break;
+ case SLOPE_E:
+ case SLOPE_STEEP_E: i += 4; break;
+ case SLOPE_N:
+ case SLOPE_STEEP_N: i += 6; break;
+ default: return 0;
+ }
+ return i + 15;
+}
+
+const byte _road_sloped_sprites[14] = {
+ 0, 0, 2, 0,
+ 0, 1, 0, 0,
+ 3, 0, 0, 0,
+ 0, 0
+};
+
+/**
+ * Draw ground sprite and road pieces
+ * @param ti TileInfo
+ * @param road RoadBits to draw
+ */
+static void DrawRoadBits(TileInfo* ti)
+{
+ RoadBits road = GetRoadBits(ti->tile);
+ const DrawRoadTileStruct *drts;
+ PalSpriteID image = 0;
+ Roadside roadside;
+
+ if (ti->tileh != SLOPE_FLAT) {
+ int foundation = GetRoadFoundation(ti->tileh, road);
+
+ if (foundation != 0) DrawFoundation(ti, foundation);
+
+ // DrawFoundation() modifies ti.
+ // Default sloped sprites..
+ if (ti->tileh != SLOPE_FLAT) image = _road_sloped_sprites[ti->tileh - 1] + 0x53F;
+ }
+
+ if (image == 0) image = _road_tile_sprites_1[road];
+
+ roadside = GetRoadside(ti->tile);
+
+ if (IsOnSnow(ti->tile)) {
+ image += 19;
+ } else {
+ switch (roadside) {
+ case ROADSIDE_BARREN: image |= PALETTE_TO_BARE_LAND; break;
+ case ROADSIDE_GRASS: break;
+ case ROADSIDE_GRASS_ROAD_WORKS: break;
+ default: image -= 19; break; // Paved
+ }
+ }
+
+ DrawGroundSprite(image);
+
+ if (HasRoadWorks(ti->tile)) {
+ // Road works
+ DrawGroundSprite(road & ROAD_X ? SPR_EXCAVATION_X : SPR_EXCAVATION_Y);
+ return;
+ }
+
+ // Return if full detail is disabled, or we are zoomed fully out.
+ if (!(_display_opt & DO_FULL_DETAIL) || _cur_dpi->zoom == 2) return;
+
+ // Draw extra details.
+ for (drts = _road_display_table[roadside][road]; drts->image != 0; drts++) {
+ int x = ti->x | drts->subcoord_x;
+ int y = ti->y | drts->subcoord_y;
+ byte z = ti->z;
+ if (ti->tileh != SLOPE_FLAT) z = GetSlopeZ(x, y);
+ AddSortableSpriteToDraw(drts->image, x, y, 2, 2, 0x10, z);
+ }
+}
+
+static void DrawTile_Road(TileInfo *ti)
+{
+ switch (GetRoadTileType(ti->tile)) {
+ case ROAD_TILE_NORMAL:
+ DrawRoadBits(ti);
+ break;
+
+ case ROAD_TILE_CROSSING: {
+ PalSpriteID image;
+
+ if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, ti->tileh);
+
+ image = GetRailTypeInfo(GetRailTypeCrossing(ti->tile))->base_sprites.crossing;
+
+ if (GetCrossingRoadAxis(ti->tile) == AXIS_X) image++;
+ if (IsCrossingBarred(ti->tile)) image += 2;
+
+ if (IsOnSnow(ti->tile)) {
+ image += 8;
+ } else {
+ switch (GetRoadside(ti->tile)) {
+ case ROADSIDE_BARREN: image |= PALETTE_TO_BARE_LAND; break;
+ case ROADSIDE_GRASS: break;
+ default: image += 4; break; // Paved
+ }
+ }
+
+ DrawGroundSprite(image);
+ if (GetRailTypeCrossing(ti->tile) == RAILTYPE_ELECTRIC) DrawCatenary(ti);
+ break;
+ }
+
+ default:
+ case ROAD_TILE_DEPOT: {
+ const DrawTileSprites* dts;
+ const DrawTileSeqStruct* dtss;
+ uint32 palette;
+
+ if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, ti->tileh);
+
+ palette = PLAYER_SPRITE_COLOR(GetTileOwner(ti->tile));
+
+ dts = &_road_depot[GetRoadDepotDirection(ti->tile)];
+ DrawGroundSprite(dts->ground_sprite);
+
+ for (dtss = dts->seq; dtss->image != 0; dtss++) {
+ uint32 image = dtss->image;
+
+ if (_display_opt & DO_TRANS_BUILDINGS) {
+ MAKE_TRANSPARENT(image);
+ } else if (image & PALETTE_MODIFIER_COLOR) {
+ image |= palette;
+ }
+
+ AddSortableSpriteToDraw(
+ image,
+ ti->x + dtss->delta_x, ti->y + dtss->delta_y,
+ dtss->size_x, dtss->size_y,
+ dtss->size_z, ti->z
+ );
+ }
+ break;
+ }
+ }
+ DrawBridgeMiddle(ti);
+}
+
+void DrawRoadDepotSprite(int x, int y, DiagDirection dir)
+{
+ uint32 palette = PLAYER_SPRITE_COLOR(_local_player);
+ const DrawTileSprites* dts = &_road_depot[dir];
+ const DrawTileSeqStruct* dtss;
+
+ x += 33;
+ y += 17;
+
+ DrawSprite(dts->ground_sprite, x, y);
+
+ for (dtss = dts->seq; dtss->image != 0; dtss++) {
+ Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
+ uint32 image = dtss->image;
+
+ if (image & PALETTE_MODIFIER_COLOR) image |= palette;
+
+ DrawSprite(image, x + pt.x, y + pt.y);
+ }
+}
+
+static uint GetSlopeZ_Road(TileIndex tile, uint x, uint y)
+{
+ uint z;
+ Slope tileh = GetTileSlope(tile, &z);
+
+ if (tileh == SLOPE_FLAT) return z;
+ if (GetRoadTileType(tile) == ROAD_TILE_NORMAL) {
+ uint f = GetRoadFoundation(tileh, GetRoadBits(tile));
+
+ if (f != 0) {
+ if (IsSteepSlope(tileh)) {
+ z += TILE_HEIGHT;
+ } else if (f < 15) {
+ return z + TILE_HEIGHT; // leveled foundation
+ }
+ tileh = _inclined_tileh[f - 15]; // inclined foundation
+ }
+ return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
+ } else {
+ return z + TILE_HEIGHT;
+ }
+}
+
+static Slope GetSlopeTileh_Road(TileIndex tile, Slope tileh)
+{
+ if (tileh == SLOPE_FLAT) return SLOPE_FLAT;
+ if (GetRoadTileType(tile) == ROAD_TILE_NORMAL) {
+ uint f = GetRoadFoundation(tileh, GetRoadBits(tile));
+
+ if (f == 0) return tileh;
+ if (f < 15) return SLOPE_FLAT; // leveled foundation
+ return _inclined_tileh[f - 15]; // inclined foundation
+ } else {
+ return SLOPE_FLAT;
+ }
+}
+
+static void GetAcceptedCargo_Road(TileIndex tile, AcceptedCargo ac)
+{
+ /* not used */
+}
+
+static void AnimateTile_Road(TileIndex tile)
+{
+ if (IsLevelCrossing(tile)) MarkTileDirtyByTile(tile);
+}
+
+
+static const Roadside _town_road_types[][2] = {
+ { ROADSIDE_GRASS, ROADSIDE_GRASS },
+ { ROADSIDE_PAVED, ROADSIDE_PAVED },
+ { ROADSIDE_PAVED, ROADSIDE_PAVED },
+ { ROADSIDE_TREES, ROADSIDE_TREES },
+ { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
+};
+
+static const Roadside _town_road_types_2[][2] = {
+ { ROADSIDE_GRASS, ROADSIDE_GRASS },
+ { ROADSIDE_PAVED, ROADSIDE_PAVED },
+ { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
+ { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
+ { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
+};
+
+
+static void TileLoop_Road(TileIndex tile)
+{
+ switch (_opt.landscape) {
+ case LT_HILLY:
+ if (IsOnSnow(tile) != (GetTileZ(tile) > _opt.snow_line)) {
+ ToggleSnow(tile);
+ MarkTileDirtyByTile(tile);
+ }
+ break;
+
+ case LT_DESERT:
+ if (GetTropicZone(tile) == TROPICZONE_DESERT && !IsOnDesert(tile)) {
+ ToggleDesert(tile);
+ MarkTileDirtyByTile(tile);
+ }
+ break;
+ }
+
+ if (GetRoadTileType(tile) == ROAD_TILE_DEPOT) return;
+
+ if (!HasRoadWorks(tile)) {
+ const Town* t = ClosestTownFromTile(tile, (uint)-1);
+ int grp = 0;
+
+ if (t != NULL) {
+ grp = GetTownRadiusGroup(t, tile);
+
+ // Show an animation to indicate road work
+ if (t->road_build_months != 0 &&
+ (DistanceManhattan(t->xy, tile) < 8 || grp != 0) &&
+ GetRoadTileType(tile) == ROAD_TILE_NORMAL && (GetRoadBits(tile) == ROAD_X || GetRoadBits(tile) == ROAD_Y)) {
+ if (GetTileSlope(tile, NULL) == SLOPE_FLAT && EnsureNoVehicle(tile) && CHANCE16(1, 20)) {
+ StartRoadWorks(tile);
+
+ SndPlayTileFx(SND_21_JACKHAMMER, tile);
+ CreateEffectVehicleAbove(
+ TileX(tile) * TILE_SIZE + 7,
+ TileY(tile) * TILE_SIZE + 7,
+ 0,
+ EV_BULLDOZER);
+ MarkTileDirtyByTile(tile);
+ return;
+ }
+ }
+ }
+
+ {
+ /* Adjust road ground type depending on 'grp' (grp is the distance to the center) */
+ const Roadside* new_rs = (_opt.landscape == LT_CANDY) ? _town_road_types_2[grp] : _town_road_types[grp];
+ Roadside cur_rs = GetRoadside(tile);
+
+ /* We have our desired type, do nothing */
+ if (cur_rs == new_rs[0]) return;
+
+ /* We have the pre-type of the desired type, switch to the desired type */
+ if (cur_rs == new_rs[1]) {
+ cur_rs = new_rs[0];
+ /* We have barren land, install the pre-type */
+ } else if (cur_rs == ROADSIDE_BARREN) {
+ cur_rs = new_rs[1];
+ /* We're totally off limits, remove any installation and make barren land */
+ } else {
+ cur_rs = ROADSIDE_BARREN;
+ }
+ SetRoadside(tile, cur_rs);
+ MarkTileDirtyByTile(tile);
+ }
+ } else if (IncreaseRoadWorksCounter(tile)) {
+ TerminateRoadWorks(tile);
+ MarkTileDirtyByTile(tile);
+ }
+}
+
+static void ClickTile_Road(TileIndex tile)
+{
+ if (GetRoadTileType(tile) == ROAD_TILE_DEPOT) ShowDepotWindow(tile, VEH_Road);
+}
+
+static const byte _road_trackbits[16] = {
+ 0x0, 0x0, 0x0, 0x10, 0x0, 0x2, 0x8, 0x1A, 0x0, 0x4, 0x1, 0x15, 0x20, 0x26, 0x29, 0x3F,
+};
+
+static uint32 GetTileTrackStatus_Road(TileIndex tile, TransportType mode)
+{
+ switch (mode) {
+ case TRANSPORT_RAIL:
+ if (!IsLevelCrossing(tile)) return 0;
+ return GetCrossingRailBits(tile) * 0x101;
+
+ case TRANSPORT_ROAD:
+ switch (GetRoadTileType(tile)) {
+ case ROAD_TILE_NORMAL:
+ return HasRoadWorks(tile) ? 0 : _road_trackbits[GetRoadBits(tile)] * 0x101;
+
+ case ROAD_TILE_CROSSING: {
+ uint32 r = AxisToTrackBits(GetCrossingRoadAxis(tile)) * 0x101;
+
+ if (IsCrossingBarred(tile)) r *= 0x10001;
+ return r;
+ }
+
+ default:
+ case ROAD_TILE_DEPOT:
+ return AxisToTrackBits(DiagDirToAxis(GetRoadDepotDirection(tile))) * 0x101;
+ }
+ break;
+
+ default: break;
+ }
+ return 0;
+}
+
+static const StringID _road_tile_strings[] = {
+ STR_1814_ROAD,
+ STR_1814_ROAD,
+ STR_1814_ROAD,
+ STR_1815_ROAD_WITH_STREETLIGHTS,
+ STR_1814_ROAD,
+ STR_1816_TREE_LINED_ROAD,
+ STR_1814_ROAD,
+ STR_1814_ROAD,
+};
+
+static void GetTileDesc_Road(TileIndex tile, TileDesc *td)
+{
+ td->owner = GetTileOwner(tile);
+ switch (GetRoadTileType(tile)) {
+ case ROAD_TILE_CROSSING: td->str = STR_1818_ROAD_RAIL_LEVEL_CROSSING; break;
+ case ROAD_TILE_DEPOT: td->str = STR_1817_ROAD_VEHICLE_DEPOT; break;
+ default: td->str = _road_tile_strings[GetRoadside(tile)]; break;
+ }
+}
+
+static const byte _roadveh_enter_depot_unk0[4] = {
+ 8, 9, 0, 1
+};
+
+static uint32 VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y)
+{
+ switch (GetRoadTileType(tile)) {
+ case ROAD_TILE_CROSSING:
+ if (v->type == VEH_Train && !IsCrossingBarred(tile)) {
+ /* train crossing a road */
+ SndPlayVehicleFx(SND_0E_LEVEL_CROSSING, v);
+ BarCrossing(tile);
+ MarkTileDirtyByTile(tile);
+ }
+ break;
+
+ case ROAD_TILE_DEPOT:
+ if (v->type == VEH_Road &&
+ v->u.road.frame == 11 &&
+ _roadveh_enter_depot_unk0[GetRoadDepotDirection(tile)] == v->u.road.state) {
+ VehicleEnterDepot(v);
+ return 4;
+ }
+ break;
+
+ default: break;
+ }
+ return 0;
+}
+
+
+static void ChangeTileOwner_Road(TileIndex tile, PlayerID old_player, PlayerID new_player)
+{
+ if (IsLevelCrossing(tile) && GetCrossingRoadOwner(tile) == old_player) {
+ SetCrossingRoadOwner(tile, new_player == PLAYER_SPECTATOR ? OWNER_NONE : new_player);
+ }
+
+ if (!IsTileOwner(tile, old_player)) return;
+
+ if (new_player != PLAYER_SPECTATOR) {
+ SetTileOwner(tile, new_player);
+ } else {
+ switch (GetRoadTileType(tile)) {
+ case ROAD_TILE_NORMAL:
+ SetTileOwner(tile, OWNER_NONE);
+ break;
+
+ case ROAD_TILE_CROSSING:
+ MakeRoadNormal(tile, GetCrossingRoadOwner(tile), GetCrossingRoadBits(tile), GetTownIndex(tile));
+ break;
+
+ default:
+ case ROAD_TILE_DEPOT:
+ DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
+ break;
+ }
+ }
+}
+
+
+const TileTypeProcs _tile_type_road_procs = {
+ DrawTile_Road, /* draw_tile_proc */
+ GetSlopeZ_Road, /* get_slope_z_proc */
+ ClearTile_Road, /* clear_tile_proc */
+ GetAcceptedCargo_Road, /* get_accepted_cargo_proc */
+ GetTileDesc_Road, /* get_tile_desc_proc */
+ GetTileTrackStatus_Road, /* get_tile_track_status_proc */
+ ClickTile_Road, /* click_tile_proc */
+ AnimateTile_Road, /* animate_tile_proc */
+ TileLoop_Road, /* tile_loop_clear */
+ ChangeTileOwner_Road, /* change_tile_owner_clear */
+ NULL, /* get_produced_cargo_proc */
+ VehicleEnter_Road, /* vehicle_enter_tile_proc */
+ GetSlopeTileh_Road, /* get_slope_tileh_proc */
+};