Fix access violation in create_schematic() (#11534)

fixes #11533 Schematics saved from y locations greater than 0 would cause an access violation if layer probabilities were specified
minetest · Aug 16, 2021 · 963fbd1 · 963fbd1
1 parent b3b075e
commit 963fbd1
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/mapgen/mg_schematic.cpp b/src/mapgen/mg_schematic.cpp
@@ -598,8 +598,9 @@ void Schematic::applyProbabilities(v3s16 p0,
 	}
 
 	for (size_t i = 0; i != splist->size(); i++) {
-		s16 y = (*splist)[i].first - p0.Y;
-		slice_probs[y] = (*splist)[i].second;
+		s16 slice = (*splist)[i].first;
+		if (slice < size.Y)
+			slice_probs[slice] = (*splist)[i].second;
 	}
 }