@@ -849,14 +849,23 @@ int32 CmdRemoveSignalTrack(TileIndex til
typedef int32 DoConvertRailProc(TileIndex tile, RailType totype, bool exec);
/**
* Switches the rail type.
* Railtypes are stored on a per-tile basis, not on a per-track basis, so
* all the tracks in the given tile will be converted.
* @param tile The tile on which the railtype is to be convert.
* @param totype The railtype we want to convert to
* @param exec Switches between test and execute mode
* @return The cost and state of the operation
* @retval CMD_ERROR An error occured during the operation.
*/
static int32 DoConvertRail(TileIndex tile, RailType totype, bool exec)
{
if (!CheckTileOwnership(tile)) return CMD_ERROR;
if (!EnsureNoVehicle(tile) && (!IsCompatibleRail(GetRailType(tile), totype) || IsPlainRailTile(tile))) return CMD_ERROR;
if (GetRailType(tile) == totype) return CMD_ERROR;
// tile is already of requested type?
// 'hidden' elrails can't be downgraded to normal rail when elrails are disabled
if (_patches.disable_elrails && totype == RAILTYPE_RAIL && GetRailType(tile) == RAILTYPE_ELECTRIC) return CMD_ERROR;