Merge pull request vrld#5 from am0d/master

Fixes divide-by-zero error in vector:normalize() and vector:normalize_inplace()
theGoodEvil · May 18, 2012 · b259e75 · b259e75
2 parents b12f02f + 1c683f5
commit b259e75
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/vector.lua b/vector.lua
@@ -116,12 +116,14 @@ end
 
 function vector:normalize_inplace()
 	local l = self:len()
-	self.x, self.y = self.x / l, self.y / l
+	if l > 0 then self.x, self.y = self.x / l, self.y / l end
 	return self
 end
 
 function vector:normalized()
-	return self / self:len()
+    local l = self:len()
+    if l == 0 then return self end
+	return self / l
 end
 
 function vector:rotate_inplace(phi)