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-rw-r--r--src/road_cmd.cpp21
1 files changed, 17 insertions, 4 deletions
diff --git a/src/road_cmd.cpp b/src/road_cmd.cpp
index 2c752a88e..275cad922 100644
--- a/src/road_cmd.cpp
+++ b/src/road_cmd.cpp
@@ -99,6 +99,11 @@ static bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, bool *edge_roa
* @param flags operation to perform
* @param p1 bit 0..3 road pieces to remove (RoadBits)
* bit 4..5 road type
+ * bit 6 ignore the fact that the tram track has not been removed
+ * yet when removing the road bits when not actually doing
+ * it. Makes it possible to test whether the road bits can
+ * be removed from a level crossing without physically
+ * removing the tram bits before the test.
* @param p2 unused
*/
int32 CmdRemoveRoad(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
@@ -236,7 +241,7 @@ int32 CmdRemoveRoad(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
/* Don't allow road to be removed from the crossing when there is tram;
* we can't draw the crossing without trambits ;) */
- if (rt == ROADTYPE_ROAD && HASBIT(GetRoadTypes(tile), ROADTYPE_TRAM)) return CMD_ERROR;
+ if (rt == ROADTYPE_ROAD && HASBIT(GetRoadTypes(tile), ROADTYPE_TRAM) && ((flags & DC_EXEC) || !HASBIT(p1, 6))) return CMD_ERROR;
if (flags & DC_EXEC) {
if (rt == ROADTYPE_ROAD) {
@@ -800,12 +805,20 @@ static int32 ClearTile_Road(TileIndex tile, byte flags)
#undef M
case ROAD_TILE_CROSSING: {
- int32 ret;
+ RoadTypes rts = GetRoadTypes(tile);
+ int32 ret = 0;
if (flags & DC_AUTO) return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
- ret = DoCommand(tile, GetCrossingRoadBits(tile), 0, flags, CMD_REMOVE_ROAD);
- if (CmdFailed(ret)) return CMD_ERROR;
+ /* Must iterate over the roadtypes in a reverse manner because
+ * tram tracks must be removed before the road bits. */
+ for (RoadType rt = ROADTYPE_HWAY; rt >= ROADTYPE_ROAD; rt--) {
+ if (HASBIT(rts, rt)) {
+ int32 tmp_ret = DoCommand(tile, 1 << 6 | rt << 4 | GetCrossingRoadBits(tile), 0, flags, CMD_REMOVE_ROAD);
+ if (CmdFailed(tmp_ret)) return tmp_ret;
+ ret += tmp_ret;
+ }
+ }
if (flags & DC_EXEC) {
DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);