From 00f61dfb81100094b64de06ca4e1ef73ef8bcd47 Mon Sep 17 00:00:00 2001
From: Tim <t4im@users.noreply.github.com>
Date: Fri, 30 Jan 2015 05:09:20 +0100
Subject: [PATCH] rewrite extractor dye recipes, adding a few dyes and making it work better with the dye mod also preventing any issues if it is being run in a game without it

---
 technic/helpers.lua |   60 ++++++++++++++++++++++++++++++++++++------------------------
 1 files changed, 36 insertions(+), 24 deletions(-)

diff --git a/technic/helpers.lua b/technic/helpers.lua
index 459b482..d4306cf 100644
--- a/technic/helpers.lua
+++ b/technic/helpers.lua
@@ -1,27 +1,3 @@
-function get_item_meta (string)
-	if string.find(string, "return {") then
-		return minetest.deserialize(string)
-	else return nil
-	end
-end
-
-function set_item_meta (table)
-	return minetest.serialize(table)
-end
-
-function has_locked_chest_privilege(meta, player)
-	if player:get_player_name() ~= meta:get_string("owner") then
-		return false
-	end
-	return true
-end
-
-minetest.swap_node = minetest.swap_node or function(pos, node)
-	local oldmeta = minetest.get_meta(pos):to_table()
-	minetest.set_node(pos, node)
-	minetest.get_meta(pos):from_table(oldmeta)
-end
-
 -- Only changes name, keeps other params
 function technic.swap_node(pos, name)
 	local node = minetest.get_node(pos)
@@ -32,3 +8,39 @@
 	return node.name
 end
 
+-- Fully charge RE chargeable item.
+-- Must be defined early to reference in item definitions.
+function technic.refill_RE_charge(stack)
+	local max_charge = technic.power_tools[stack:get_name()]
+	if not max_charge then return stack end
+	technic.set_RE_wear(stack, max_charge, max_charge)
+	local meta = minetest.deserialize(stack:get_metadata()) or {}
+	meta.charge = max_charge
+	stack:set_metadata(minetest.serialize(meta))
+	return stack
+end
+
+local function resolve_name(function_name)
+	local a = _G
+	for key in string.gmatch(function_name, "([^%.]+)(%.?)") do
+		if a[key] then
+			a = a[key]
+		else
+			return nil
+		end
+	end
+	return a
+end
+
+function technic.function_exists(function_name)
+	return type(resolve_name(function_name)) == 'function'
+end
+
+-- if the node is loaded, returns it. If it isn't loaded, load it and return nil.
+function technic.get_or_load_node(pos)
+	local node_or_nil = minetest.get_node_or_nil(pos)
+	if node_or_nil then return node_or_nil end
+	local vm = VoxelManip()
+	local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
+	return nil
+end

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