add validation check for invalid plane normals (fixes #89)

doesn't actually fix the problem but it looks it was a bug in xash.
wootguy · Apr 23, 2024 · 64f0ad9 · 64f0ad9
1 parent a9468f7
commit 64f0ad9
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/bsp/Bsp.cpp b/src/bsp/Bsp.cpp
@@ -3525,6 +3525,14 @@ bool Bsp::validate() {
 			}
 		}
 	}
+	for (int i = 0; i < planeCount; i++) {
+		BSPPLANE& plane = planes[i];
+
+		if (plane.vNormal.length() < 0.5f) {
+			logf("Bad normal for plane %d\n", i);
+			isValid = false;
+		}
+	}
 
 	for (int i = 0; i < clipnodeCount; i++) {
 		if (clipnodes[i].iPlane < 0 || clipnodes[i].iPlane >= planeCount) {