From 39491e3908ef06b3731ff3e2b854780ed79363a1 Mon Sep 17 00:00:00 2001
From: Elias Fleckenstein <eliasfleckenstein@web.de>
Date: Mon, 11 Jan 2021 14:05:39 +0100
Subject: [PATCH] Add API

---
 init.lua | 107 +++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 97 insertions(+), 10 deletions(-)

diff --git a/init.lua b/init.lua
index d365af7..4899eed 100644
--- a/init.lua
+++ b/init.lua
@@ -1,23 +1,110 @@
-minetest.register_globalstep(function()
+autodupe = {}
+
+local function prepare_item_collect(pos)
+	minetest.localplayer:set_pos(vector.subtract(pos, vector.new(0, 1, 0)))
+end
+
+local function node_inv_str(pos)
+	return "nodemeta:" .. pos.x .. "," .. pos.y .. "," .. pos.z
+end
+
+local function inv_empty(pos)
+	local inv = minetest.get_inventory(node_inv_str(pos))
+	return not inv or not inv.src or inv.src[1]:get_name() == ""
+end
+
+local function get_free_inv_slot()
+	for index, stack in ipairs(minetest.get_inventory("current_player").main) do
+		if stack:get_name() == "" then
+			return index
+		end
+	end
+	return 1
+end
+
+function autodupe.needed(index)
+	local player = minetest.localplayer
+	local ppos = player:get_pos()
+	local furnaces = minetest.find_nodes_near(ppos, 5, "mcl_furnaces:furnace", true)
+	local found_furnace = false
+	for _, fpos in ipairs(furnaces) do
+		if inv_empty(fpos) then
+			found_furnace = true
+			local invstr = node_inv_str(fpos)
+			local invact = InventoryAction("move")
+			invact:from("current_player", "main", index)
+			invact:to(invstr, "src", 1)
+			invact:apply()
+			minetest.interact("activate", {type = "nothing"})
+			break
+		end
+	end
+
+	if not found_furnace then
+		local airs = minetest.find_nodes_near(ppos, 5, "air", false)
+		for _, apos in ipairs(airs) do
+			if inv_empty(apos) then
+				if minetest.switch_to_item("mcl_furnaces:furnace") then
+					minetest.place_node(apos)
+					prepare_item_collect(apos)
+				end
+				return
+			end
+		end
+	end
+end
+
+local function dupe_furnaces()
+	local furnace_index
+	for index, stack in ipairs(minetest.get_inventory("current_player").main) do
+		if stack:get_name() == "mcl_furnaces:furnace" then
+			if furnace_index then
+				return true
+			end
+			furnace_index = index
+		end
+	end
+	if furnace_index then
+		autodupe.needed(furnace_index)
+	end
+end
+
+function autodupe.cleanup()
+	if not dupe_furnaces() then
+		return false
+	end
+	local player = minetest.localplayer
+	local ppos = player:get_pos()
+	local furnaces = minetest.find_nodes_near(ppos, 5, "mcl_furnaces:furnace", true)
+	for _, fpos in ipairs(furnaces) do
+		prepare_item_collect(fpos)
+		autotool.select_best_tool("mcl_furnaces:furnace")
+		minetest.dig_node(fpos)
+		return false
+	end
+	return true
+end
+
+minetest.register_globalstep(function(dtime)
 	if not minetest.settings:get_bool("autodupe") then return end
 	local player = minetest.localplayer
 	if not player then return end
-	local airs = minetest.find_nodes_near(player:get_pos(), 5, "air")
+	local airs = minetest.find_nodes_near(player:get_pos(), 5, "air", true)
 	for _, p in ipairs(airs) do
-		local invstr = "nodemeta:" .. p.x .. "," .. p.y .. "," .. p.z
-		if minetest.get_inventory(invstr) then
-			local invact = InventoryAction("drop")
+		if not inv_empty(p) then
+			local invstr = node_inv_str(p)
+			local invact = InventoryAction("move")
 			invact:from(invstr, "src", 1)
-			invact:set_count(0)
+			invact:to("current_player", "main", get_free_inv_slot())
 			invact:apply()
 		end
 	end
-	local furnaces = minetest.find_nodes_near(player:get_pos(), 5, "mcl_furnaces:furnace")
+	local furnaces = minetest.find_nodes_near(player:get_pos(), 5, "mcl_furnaces:furnace", true)
 	local dug_any = false
 	local index = player:get_wield_index()
 	for _, p in ipairs(furnaces) do
-		local inv = minetest.get_inventory("nodemeta:" .. p.x .. "," .. p.y .. "," .. p.z)
-		if inv and inv.src and inv.src[1]:get_name() ~= "" then
+		local inv = minetest.get_inventory(node_inv_str(p))
+		if not inv_empty(p) then
 			if not dug_any then
 				autotool.select_best_tool("mcl_furnaces:furnace")
 				dug_any = true
@@ -29,6 +116,6 @@ minetest.register_globalstep(function()
 		player:set_wield_index(index)
 		minetest.close_formspec("")
 	end
-end) 
+end)
 
 minetest.register_cheat("AutoDupe", "World", "autodupe")
-- 
2.44.0