From b9dfbc00dc0dbf02cbc502bd82d58b5f4d937672 Mon Sep 17 00:00:00 2001
From: cheapie <no-email-for-you@example.com>
Date: Wed, 12 Apr 2017 02:33:09 -0500
Subject: Require a water supply if pipeworks is installed

---
 init.lua | 42 ++++++++++++++++++++++++++++++++++--------
 1 file changed, 34 insertions(+), 8 deletions(-)

(limited to 'init.lua')

diff --git a/init.lua b/init.lua
index 43d0c35..449b91f 100644
--- a/init.lua
+++ b/init.lua
@@ -1,10 +1,30 @@
-local function set_formspec(meta,enabled,full)
+local pipeworks_installed = minetest.get_modpath("pipeworks")
+
+local function find_water_supply(pos)
+	if not pipeworks_installed then return true end
+	local minp = vector.add(pos,vector.new(-1,-1,-1))
+	local maxp = vector.add(pos,vector.new(1,1,1))
+	local nodes = minetest.find_nodes_in_area(minp,maxp,"group:pipe")
+	for _,pos in pairs(nodes) do
+		local node = minetest.get_node(pos)
+		if string.match(node.name,"^pipeworks:.*_loaded$") then
+			return true
+		end
+	end
+	return false
+end
+
+local function set_formspec(meta,enabled,full,water)
 	local status
 	if enabled then
-		if full then
-			status = "Full Bin"
+		if water then
+			if full then
+				status = "Full Bin"
+			else
+				status = "Making Ice"
+			end
 		else
-			status = "Making Ice"
+			status = "Water Error"
 		end
 	else
 		status = "Off"
@@ -23,17 +43,23 @@ local function update_status(pos,meta,ice)
 		timer:stop()
 		set_formspec(meta,false)
 	else
+		local water = find_water_supply(pos)
 		local binpos = vector.add(pos,vector.new(0,-1,0))
 		local binnode = minetest.get_node(binpos)
 		local binmeta = minetest.get_meta(binpos)
 		local bininv = binmeta:get_inventory()
 		if binnode.name ~= "icemachine:bin" or not bininv:room_for_item("ice","icemachine:cube") then
 			timer:stop()
-			set_formspec(meta,true,true)
+			set_formspec(meta,true,true,true)
 		else
-			if not timer:is_started() then timer:start(30) end
-			if ice then bininv:add_item("ice","icemachine:cube 9") end
-			set_formspec(meta,true,false)
+			if water then
+				if not timer:is_started() then timer:start(30) end
+				if ice then bininv:add_item("ice","icemachine:cube 9") end
+				set_formspec(meta,true,false,true)
+			else
+				timer:stop()
+				set_formspec(meta,true,false,false)
+			end
 		end
 	end
 end
-- 
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