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README.md

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+Equivalent Exchange for Minetest
+
+A semi-port of the minecraft mod Equivalent Exchange
+
+Usage:
+Cheat yourself a energy condenser (equivalent_exchange:condenser)

depends.txt

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+default

emcs.lua

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+local emcs = {
+	node = {
+		["default:"] = {
+			["stone"] = 1,
+			["cobble"] = 1,
+			["desert_stone"] = 1,
+			["stonebrick"] = 1,
+			["desert_stonebrick"] = 1,
+			["dirt_with_grass"] = 1,
+			["dirt_with_snow"] = 1,
+			dirt = 1,
+			sand=1,
+			["desert_sand"] = 1,
+			gravel = 4,
+			sandstone = 4,
+			sandstonebrick = 4,
+			clay = 16,
+			brick = 16,
+			tree = 32,
+			jungletree = 32,
+			junglewood = 8,
+			cactus = 8,
+			papyrus = 32,
+			bookshelf = 336,
+			glass = 1,
+			fence_wood = 12,
+			rail = 96,
+			ladder = 14,
+			wood = 8,
+			torch = 9,
+			sign_wall = 52,
+			chest = 64,
+			chest_locked = 320,
+			furnace = 8,
+			mossycobble = 1,
+			mese=75978,
+			obsidian = 64,
+		}
+	},
+	craftitem = {
+		["default:"] = {
+			stick = 2,
+			paper = 96,
+			book = 288,
+			coal_lump = 128,
+			mese_crystal = 8442,
+			diamond = 8192,
+			clay_lump = 16,
+			steel_ingot = 256,
+			copper_ingot = 85,
+			bronze_ingot = 255,
+			gold_ingot = 2048,
+			mese_crystal_fragment = 938,
+			clay_brick = 16,
+		}
+	}
+--	block = {
+--		["default:"] = {
+--		}
+--	}
+}
+
+for type, emcset in pairs(emcs) do
+	for prefix, subs in pairs(emcset) do
+		for name, emc in pairs(subs) do
+			local ornode = minetest.registered_items[prefix..name]
+			local node = {emc=emc}
+			for tagname, tagvalue in pairs(ornode) do
+				node[tagname] = tagvalue
+			end
+			print(name.."="..emc.."="..dump(node.emc))
+			minetest["register_"..type](":"..prefix..name, node)
+		end
+	end
+end

init.lua

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+dofile(minetest.get_modpath("equivalent_exchange").."/emcs.lua")
+
+equivalent_exchange = {
+	convert = function(pos)
+		local meta = minetest.get_meta(pos)
+		local inventory = meta:get_inventory()
+		local target = inventory:get_stack("to", 1)
+		if target:is_empty() then return end
+		if not inventory:room_for_item("from", target:get_name()) then return end
+		target = target:to_table()
+		local target_emc = equivalent_exchange.get_emc(target.name)
+		if not target_emc then return end
+		local emc = meta:get_int("emc")
+		local size = inventory:get_size("from")
+		for i=1, size do
+			local stack = inventory:get_stack("from", i)
+			if not stack:is_empty() then
+				stack = stack:to_table()
+				local local_emc = equivalent_exchange.get_emc(stack.name)
+				if local_emc ~= nil then
+					emc = emc + local_emc * stack.count
+					inventory:set_stack("from", i, {})
+				end
+				--print(dump(stack))
+			end
+		end
+		local timesOver = math.floor(emc / target_emc)
+		emc = emc - timesOver * target_emc
+		meta:set_int("emc", emc)
+		inventory:add_item("from", {name=target.name, count = timesOver})
+		meta:set_string("formspec", equivalent_exchange.get_formspec(emc, target_emc))
+	end,
+	get_emc = function(name)
+		return minetest.registered_items[name].emc
+	end,
+	get_formspec = function(emc, target)
+		return "size[8,10]"..
+				"list[current_name;to;1,0;1,1;]"..
+				"list[current_name;from;0,1.5;8,4;]"..
+				"list[current_player;main;0,6;8,4;]"..
+				"image[4,0;1,1;default_furnace_fire_bg.png^[lowpart:"..
+				(emc/target*100)..":default_furnace_fire_fg.png]"
+	end,
+}
+
+minetest.register_craftitem("equivalent_exchange:book_of_power_1", {
+	description = "Book Of Power 1",
+	inventory_image = "default_book.png",
+	emc = 1200,
+})
+
+minetest.register_node("equivalent_exchange:condenser", {
+	description = "Energy Condenser",
+	tiles = {
+		"default_chest_top.png^equivalent_exchange_magic.png",
+		"default_chest_top.png^equivalent_exchange_magic.png",
+		"default_chest_side.png^equivalent_exchange_magic.png",
+		"default_chest_side.png^equivalent_exchange_magic.png",
+		"default_chest_side.png^equivalent_exchange_magic.png",
+		"default_chest_front.png^equivalent_exchange_magic.png"
+	},
+	paramtype2 = "facedir",
+	groups = {cracky=2},
+	is_ground_content = false,
+	sounds = default.node_sound_stone_defaults(),
+	on_construct = function(pos)
+	local meta = minetest.get_meta(pos)
+		meta:set_string("formspec", equivalent_exchange.get_formspec(0, 0))
+		meta:set_string("infotext", "Energy Condenser")
+		local inv = meta:get_inventory()
+		inv:set_size("to", 1)
+		inv:set_size("from", 8*4)
+	end,
+	can_dig = function(pos,player)
+		local meta = minetest.get_meta(pos);
+		local inv = meta:get_inventory()
+		if not inv:is_empty("to") then
+			return false
+		elseif not inv:is_empty("from") then
+			return false
+		end
+		return true
+	end,
+	on_metadata_inventory_put = function(pos, listname, index, stack, player)
+		equivalent_exchange.convert(pos)
+		return stack:get_count()
+	end,
+	on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
+		equivalent_exchange.convert(pos)
+		return count
+	end,
+	emc = 500
+})