From: Olav Bakke Svendsen <mail@olavbs.no>
Date: Wed, 11 Oct 2023 21:36:07 +0000 (+0200)
Subject: Empty stacks returned nil, not 0
X-Git-Tag: stable-steam~34
X-Git-Url: http://git.olavbs.no/?a=commitdiff_plain;h=65438f9e3b7c54f391da8c6460eb8b92c6de6ca7;p=cc.git

Empty stacks returned nil, not 0
---

diff --git a/steam/temporary-coal-feeder.lua b/steam/temporary-coal-feeder.lua
index 6f33ff1..8bf7a48 100644
--- a/steam/temporary-coal-feeder.lua
+++ b/steam/temporary-coal-feeder.lua
@@ -22,7 +22,8 @@ end
 local locate_coal = function()
   local stock = {}
   for addr,barrel in pairs(barrels) do
-    stock[addr] = barrel.getItemDetail(1).count
+    local item = barrel.getItemDetail(1)
+    stock[addr] = item.count or 0
   end
   return stock
 end
@@ -30,7 +31,8 @@ end
 local feed = function(stock)
   local stock = stock
   for deployer_addr,deployer in pairs(deployers) do
-    if refill_when(deployer.getItemDetail(1).count) then
+    local deployer_item = deployer.getItemDetail(1)
+    if refill_when(deployer_item.count or 0) then
       local f = function() return false, "No coal available" end
       for barrel_addr,count in pairs(stock) do
         if count >= refill_amt then