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-rw-r--r--src/tunnelbridge_cmd.cpp27
1 files changed, 5 insertions, 22 deletions
diff --git a/src/tunnelbridge_cmd.cpp b/src/tunnelbridge_cmd.cpp
index f6c62d918..020d8b360 100644
--- a/src/tunnelbridge_cmd.cpp
+++ b/src/tunnelbridge_cmd.cpp
@@ -532,29 +532,12 @@ CommandCost CmdBuildTunnel(TileIndex start_tile, uint32 flags, uint32 p1, uint32
/* slope of end tile must be complementary to the slope of the start tile */
if (end_tileh != ComplementSlope(start_tileh)) {
- /*
- * A lot of things can be autosloped, but then there is still a structure with
- * on top of a tunnel entrance which is bad. Therefor we disallow those.
- * Furthermore half road bits (not tram bits) can always be removed, so we
- * need to preserve that behaviour here too.
- */
- switch (GetTileType(end_tile)) {
- default: return_cmd_error(STR_5005_UNABLE_TO_EXCAVATE_LAND);
+ /* Check if there is a structure on the terraformed tile. Do not add the cost, that will be done by the terraforming */
+ ret = DoCommand(end_tile, 0, 0, DC_AUTO, CMD_LANDSCAPE_CLEAR);
+ if (CmdFailed(ret)) return_cmd_error(STR_5005_UNABLE_TO_EXCAVATE_LAND);
- /* Tiles that can be (safely) "auto" terraformed for tunnels */
- case MP_ROAD:
- if (GetRoadTileType(end_tile) != ROAD_TILE_NORMAL || // Depots and crossings can't be removed
- (GetRoadTypes(end_tile) & ROADTYPES_TRAMHWAY) != 0 || // Half tram bits must not be removed
- COUNTBITS(GetRoadBits(end_tile, ROADTYPE_ROAD)) > 1) { // Non-half road bits must not be removed either
- return_cmd_error(STR_5005_UNABLE_TO_EXCAVATE_LAND);
- }
- /* FALL THROUGH */
- case MP_CLEAR:
- case MP_TREES:
- ret = DoCommand(end_tile, end_tileh & start_tileh, 0, flags, CMD_TERRAFORM_LAND);
- if (CmdFailed(ret)) return_cmd_error(STR_5005_UNABLE_TO_EXCAVATE_LAND);
- break;
- }
+ ret = DoCommand(end_tile, end_tileh & start_tileh, 0, flags, CMD_TERRAFORM_LAND);
+ if (CmdFailed(ret)) return_cmd_error(STR_5005_UNABLE_TO_EXCAVATE_LAND);
} else {
ret = DoCommand(end_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
if (CmdFailed(ret)) return ret;