From 646e629c698cdd8088496a846bed44b66b43940e Mon Sep 17 00:00:00 2001
From: Maik Wild <mail@maikwild.de>
Date: Mon, 15 Oct 2018 13:50:41 +0200
Subject: [PATCH] fixed debug error

---
 map_gen/Diggy/Debug.lua | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/map_gen/Diggy/Debug.lua b/map_gen/Diggy/Debug.lua
index 761e27f1..375883e2 100644
--- a/map_gen/Diggy/Debug.lua
+++ b/map_gen/Diggy/Debug.lua
@@ -90,6 +90,10 @@ function Debug.print_grid_value(value, surface, position)
         b = 0
     end
 
+    if (g < 0) then
+        g = 0
+    end
+
     r = abs(r)
 
     local color = { r = r, g = g, b = b}