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@ -253,7 +253,7 @@ const byte _ffb_64[128] = {
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static void TPFMode1(TrackPathFinder* tpf, TileIndex tile, DiagDirection direction)
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{
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uint bits = 0;
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uint bits;
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int i;
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RememberData rd;
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TileIndex tile_org = tile;
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@ -282,54 +282,28 @@ static void TPFMode1(TrackPathFinder* tpf, TileIndex tile, DiagDirection directi
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}
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tile += TileOffsByDiagDir(direction);
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/* check if the new tile can be entered from that direction */
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/* Inside this block we should not use 'return' to indicate 'no way' condition (at least for rail transport type) */
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if (tpf->tracktype == TRANSPORT_ROAD || tpf->tracktype == TRANSPORT_RAIL) {
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/* Check in case of rail if the owner is the same */
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if (tpf->tracktype == TRANSPORT_RAIL) {
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/* don't enter train depot from the back */
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if (IsTileDepotType(tile, TRANSPORT_RAIL) && GetRailDepotDirection(tile) == direction) goto no_way;
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// don't enter train depot from the back
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if (IsTileDepotType(tile, TRANSPORT_RAIL) && GetRailDepotDirection(tile) == direction) return;
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/* Check in case of rail if the owner is the same */
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if (IsTileType(tile_org, MP_RAILWAY) || IsTileType(tile_org, MP_STATION) || IsTileType(tile_org, MP_TUNNELBRIDGE))
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if (IsTileType(tile, MP_RAILWAY) || IsTileType(tile, MP_STATION) || IsTileType(tile, MP_TUNNELBRIDGE))
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if (GetTileOwner(tile_org) != GetTileOwner(tile)) goto no_way;
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if (GetTileOwner(tile_org) != GetTileOwner(tile)) return;
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}
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// check if the new tile can be entered from that direction
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if (tpf->tracktype == TRANSPORT_ROAD) {
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/* road stops and depots now have a track (r4419) */
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/* don't enter road stop from the back */
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if (IsRoadStopTile(tile) && ReverseDiagDir(GetRoadStopDir(tile)) != direction) goto no_way;
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/* don't enter road depot from the back */
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if (IsTileDepotType(tile, TRANSPORT_ROAD) && ReverseDiagDir(GetRoadDepotDirection(tile)) != direction) goto no_way;
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// road stops and depots now have a track (r4419)
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// don't enter road stop from the back
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if (IsRoadStopTile(tile) && ReverseDiagDir(GetRoadStopDir(tile)) != direction) return;
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// don't enter road depot from the back
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if (IsTileDepotType(tile, TRANSPORT_ROAD) && ReverseDiagDir(GetRoadDepotDirection(tile)) != direction) return;
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}
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if (IsTileType(tile, MP_TUNNELBRIDGE)) {
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if (IsTunnel(tile)) {
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/* tunnel hole can be entered only from one direction */
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if (GetTunnelDirection(tile) != direction) goto no_way;
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} else if (IsBridge(tile)) {
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/* bridge ramp can be entered only from one direction (without custom bridge heads) */
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if (GetBridgeRampDirection(tile) != direction) goto no_way;
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}
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}
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if (tpf->tracktype == TRANSPORT_RAIL) {
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/* check for the rail type compatibility */
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Trackdir td = DiagdirToDiagTrackdir(direction);
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RailType type_org = GetTileRailType(tile_org, td);
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RailType type = GetTileRailType(tile, td);
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if (type != type_org) {
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// they can be compatible only if one is normal and the other one is elrail
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if (type_org == RAILTYPE_RAIL && type != RAILTYPE_ELECTRIC) goto no_way;
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if (type == RAILTYPE_RAIL && type_org != RAILTYPE_ELECTRIC) goto no_way;
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}
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}
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}
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tpf->rd.cur_length++;
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/* the next line is skipped when the new tile can't be entered from tile_org */
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bits = GetTileTrackStatus(tile, tpf->tracktype);
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no_way:
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tpf->rd.cur_length++;
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if ((byte)bits != tpf->var2) {
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bits &= _tpfmode1_and[direction];
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