From a8865205e8b9f4c8b9c035dc7226460630c1dc78 Mon Sep 17 00:00:00 2001
From: Valansch <mail@maikwild.de>
Date: Sat, 2 Sep 2017 14:58:18 +0200
Subject: [PATCH] Fixed exception in on_tick after well was removed. #44

---
 control.lua | 3 ++-
 on_tick.lua | 8 ++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/control.lua b/control.lua
index c1a55cca..874b6df2 100644
--- a/control.lua
+++ b/control.lua
@@ -2,6 +2,7 @@ require "util"
 require "locale/utils/event"
 require "config"
 require "locale/utils/utils"
+require "locale/utils/list_utils"
 require "base_data"
 require "user_groups"
 require "chatlog"
@@ -41,4 +42,4 @@ function walkabout(player_name, distance)
 		game.player.print("This command moved to /walkabout.")
 end
 
-Event.register(defines.events.on_player_created, player_joined)
\ No newline at end of file
+Event.register(defines.events.on_player_created, player_joined)
diff --git a/on_tick.lua b/on_tick.lua
index e9bab9c8..387261b2 100644
--- a/on_tick.lua
+++ b/on_tick.lua
@@ -1,6 +1,10 @@
 function refill_well()
-    for _,well in pairs(global.wells) do 
-      well.chest.insert({name = well.item, count = well.items_per_second * 15})
+    for _,well in pairs(global.wells) do
+      if well.chest.valid then
+        well.chest.insert({name = well.item, count = well.items_per_second * 15})
+      else
+        table.remove_element(global.wells, well)
+      end
     end
 end