diff options
| -rw-r--r-- | clear_cmd.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/clear_cmd.c b/clear_cmd.c index 8ccd78758..2802fc9cf 100644 --- a/clear_cmd.c +++ b/clear_cmd.c @@ -259,13 +259,14 @@ int32 CmdTerraformLand(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) if (IsSteepSlope(s)) return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK); if (IsPlainRailTile(tile)) { - /* We need to check if a rail is on a leveled foundation and - * then treat it as such. Important for correct tunneling */ + /* If a piece of rail is on a foundation, prohibit any terraforming + * of that tile. We do need to check this with the original slope, not + * the would-be one. */ extern const TrackBits _valid_tileh_slopes[2][15]; TrackBits tb = GetTrackBits(tile); - uint foundation = (GetRailFoundation(s, tb) == 0) ? 1 : 0; - if (tb & ~_valid_tileh_slopes[foundation][s]) return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK); + if (GetRailFoundation(GetTileSlope(tile, NULL), tb) != 0) return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK); + if (tb & ~_valid_tileh_slopes[0][s]) return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK); } else return_cmd_error(STR_5800_OBJECT_IN_THE_WAY); } |