mirror of https://github.com/OpenTTD/OpenTTD
(svn r3900) When clearing a bridge determine the bridge direction and tile offset once instead of all over the place; also use UpdateSignalsOnSegment() instead of SetSignalsOnBothDir(), because this is sufficient
parent
8a77808f65
commit
fedebdd09b
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@ -624,15 +624,14 @@ static TileIndex FindEdgesOfBridge(TileIndex tile, TileIndex *endtile)
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static int32 DoClearBridge(TileIndex tile, uint32 flags)
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{
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DiagDirection direction;
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TileIndexDiff delta;
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TileIndex endtile;
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Vehicle *v;
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Town *t;
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Axis direction;
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SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
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direction = GB(_m[tile].m5, 0, 1);
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if (IsBridgeMiddle(tile)) {
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if (IsTransportUnderBridge(tile)) {
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/* delete transport route under the bridge */
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@ -677,23 +676,24 @@ static int32 DoClearBridge(TileIndex tile, uint32 flags)
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if (!EnsureNoVehicle(tile) || !EnsureNoVehicle(endtile)) return CMD_ERROR;
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direction = GetBridgeRampDirection(tile);
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delta = TileOffsByDir(direction);
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/* Make sure there's no vehicle on the bridge
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Omit tile and endtile, since these are already checked, thus solving the problem
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of bridges over water, or higher bridges, where z is not increased, eg level bridge
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*/
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tile += (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
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endtile -= (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
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/* Bridges on slopes might have their Z-value offset..correct this */
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v = FindVehicleBetween(tile, endtile, TilePixelHeight(tile) + 8 + GetCorrectTileHeight(tile));
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v = FindVehicleBetween(
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tile + delta,
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endtile - delta,
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TilePixelHeight(tile) + 8 + GetCorrectTileHeight(tile)
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);
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if (v != NULL) {
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VehicleInTheWayErrMsg(v);
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return CMD_ERROR;
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}
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/* Put the tiles back to start/end position */
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tile -= (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
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endtile += (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
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t = ClosestTownFromTile(tile, (uint)-1); //needed for town rating penalty
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// check if you're allowed to remove the bridge owned by a town.
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// removal allowal depends on difficulty settings
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@ -702,7 +702,6 @@ static int32 DoClearBridge(TileIndex tile, uint32 flags)
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}
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if (flags & DC_EXEC) {
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TileIndexDiff delta = (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
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TileIndex c;
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//checks if the owner is town then decrease town rating by RATING_TUNNEL_BRIDGE_DOWN_STEP until
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@ -739,15 +738,11 @@ static int32 DoClearBridge(TileIndex tile, uint32 flags)
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}
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}
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SetSignalsOnBothDir(tile, direction == AXIS_X ? TRACK_X : TRACK_Y);
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SetSignalsOnBothDir(endtile, direction == AXIS_X ? TRACK_X : TRACK_Y);
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UpdateSignalsOnSegment(tile, ReverseDiagDir(direction));
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UpdateSignalsOnSegment(endtile, direction);
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}
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if (direction == AXIS_X) {
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return (TileX(endtile) - TileX(tile) + 1) * _price.clear_bridge;
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} else {
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return (TileY(endtile) - TileY(tile) + 1) * _price.clear_bridge;
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}
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return (DistanceManhattan(tile, endtile) + 1) * _price.clear_bridge;
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}
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static int32 ClearTile_TunnelBridge(TileIndex tile, byte flags)
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