math.floor triggers error if it gets something nil

2019-07-20 19:43:38 +02:00 · 2019-07-20 19:43:38 +02:00 · b5e8068a99
parent 896baf8e05
commit b5e8068a99
1 changed files with 4 additions and 1 deletions
--- a/advtrains_line_automation/stoprail.lua
+++ b/advtrains_line_automation/stoprail.lua
@ -4,7 +4,10 @@

 local function to_int(n)
 	--- Disallow floating-point numbers
-	return math.floor(tonumber(n))
+	local k = tonumber(n)
+	if k then
+		return math.floor(k)
+	end
 end

 local function updatemeta(pos)