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-rw-r--r--src/newgrf.cpp11
1 files changed, 10 insertions, 1 deletions
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 267d47656..83170d2f9 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -7628,7 +7628,16 @@ static void FinaliseHouseArray()
/* We need to check all houses again to we are sure that multitile houses
* did get consecutive IDs and none of the parts are missing. */
- IsHouseSpecValid(hs, next1, next2, next3, NULL);
+ if (!IsHouseSpecValid(hs, next1, next2, next3, NULL)) {
+ /* GetHouseNorthPart checks 3 houses that are directly before
+ * it in the house pool. If any of those houses have multi-tile
+ * flags set it assumes it's part of a multitile house. Since
+ * we can have invalid houses in the pool marked as disabled, we
+ * don't want to have them influencing valid tiles. As such set
+ * building_flags to zero here to make sure any house following
+ * this one in the pool is properly handled as 1x1 house. */
+ hs->building_flags = 0;
+ }
}
if (min_year != 0) {