- Fixed: The nodebuilder is highly likely to renumber vertices, so we need to remember how the

original vertices map to the new ones until after vertex slopes are handled.

SVN r3380 (trunk)

src/nodebuild_utility.cpp

@@ -75,7 +75,7 @@ angle_t FNodeBuilder::PointToAngle (fixed_t x, fixed_t y)
 
 void FNodeBuilder::FindUsedVertices (vertex_t *oldverts, int max)
 {
-	int *map = (int *)alloca (max*sizeof(int));
+	int *map = new int[max];
 	int i;
 	FPrivVert newvert;
 
@@ -102,6 +102,17 @@ void FNodeBuilder::FindUsedVertices (vertex_t *oldverts, int max)
 		Level.Lines[i].v1 = (vertex_t *)(size_t)map[v1];
 		Level.Lines[i].v2 = (vertex_t *)(size_t)map[v2];
 	}
+	OldVertexTable = map;
+}
+
+// Retrieves the original vertex -> current vertex table.
+// Doing so prevents the node builder from freeing it.
+
+const int *FNodeBuilder::GetOldVertexTable()
+{
+	int *table = OldVertexTable;
+	OldVertexTable = NULL;
+	return table;
 }
 
 // For every sidedef in the map, create a corresponding seg.