melterns/metal_melter/melter.lua

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-- Melts metals using lava as a heat source
-- Max lava that can be held by the melter
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metal_melter.max_fuel = 8000
-- Max metal that can be held by the melter
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metal_melter.max_metal = 16000
-- How much metal is given for melting a typename (in millibuckets)
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metal_melter.spec = {
ingot = 144,
crystal = 144,
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block = 1296,
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lump = 288,
cast = 288,
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ore = 288
}
local function in_table(t, n)
local found = nil
for _, v in pairs(t) do
if v == n then
found = v
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end
end
return found
end
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function metal_melter.get_metal_from_stack(stack)
local metal = nil
local metal_type = nil
for mt, types in pairs(metal_melter.melts) do
if metal then break end
for tp,items in pairs(types) do
if in_table(items, stack) then
metal = mt
metal_type = tp
break
end
end
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end
return metal, metal_type
end
function metal_melter.get_metal_melter_formspec_default()
return "size[8,8.5]"..
default.gui_bg..
default.gui_bg_img..
default.gui_slots..
"list[context;input;2.25,0.2;1,1;]"..
"list[context;heat;2.25,1.4;1,1;]"..
"image[1.3,1.4;1,1;gui_furnace_arrow_bg.png^[transformR90]"..
"image[0.08,0;1.4,2.8;melter_gui_barbg.png]"..
"image[0.08,0;1.4,2.8;melter_gui_gauge.png]"..
"label[0.08,3.4;Lava: 0/"..metal_melter.max_fuel.." mB]"..
"image[6.68,0;1.4,2.8;melter_gui_barbg.png]"..
"image[6.68,0;1.4,2.8;melter_gui_gauge.png]"..
"label[0.08,3.75;No Molten Metal]"..
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"list[context;bucket_in;4.75,0.2;1,1;]"..
"list[context;bucket_out;4.75,1.4;1,1;]"..
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"image[5.75,0.2;1,1;gui_furnace_arrow_bg.png^[transformR270]"..
"image[5.75,1.4;1,1;gui_furnace_arrow_bg.png^[transformR90]"..
"button[6.68,2.48;1.33,1;dump;Dump]"..
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"list[current_player;main;0,4.25;8,1;]"..
"list[current_player;main;0,5.5;8,3;8]"..
"listring[context;heat]"..
"listring[current_player;main]"..
"listring[context;input]"..
"listring[current_player;main]"..
"listring[context;bucket_in]"..
"listring[current_player;main]"..
"listring[context;bucket_out]"..
"listring[current_player;main]"..
default.get_hotbar_bg(0, 4.25)
end
function metal_melter.get_metal_melter_formspec(data)
local lava_percent = data.lava_level / metal_melter.max_fuel
local metal_percent = data.metal_level / metal_melter.max_metal
local metal_formspec = "label[0.08,3.75;No Molten Metal]"
if data.metal ~= "" then
metal_formspec = "label[0.08,3.75;"..data.metal..": "..data.metal_level.."/"..metal_melter.max_metal.." mB]"
end
return "size[8,8.5]"..
default.gui_bg..
default.gui_bg_img..
default.gui_slots..
"list[context;input;2.25,0.2;1,1;]"..
"list[context;heat;2.25,1.4;1,1;]"..
"image[1.3,1.4;1,1;gui_furnace_arrow_bg.png^[transformR90]"..
"image[0.08,0;1.4,2.8;melter_gui_barbg.png]"..
"image[0.08,"..(2.44 - lava_percent * 2.44)..";1.4,"..(lava_percent * 2.8)..";default_lava.png]"..
"image[0.08,0;1.4,2.8;melter_gui_gauge.png]"..
"label[0.08,3.4;Lava: "..data.lava_level.."/"..metal_melter.max_fuel.." mB]"..
"image[6.68,0;1.4,2.8;melter_gui_barbg.png]"..
"image[6.68,"..(2.44 - metal_percent * 2.44)..";1.4,"..(metal_percent * 2.8)..";"..data.metal_texture.."]"..
"image[6.68,0;1.4,2.8;melter_gui_gauge.png]"..
metal_formspec..
"list[context;bucket_in;4.75,0.2;1,1;]"..
"list[context;bucket_out;4.75,1.4;1,1;]"..
"image[5.75,0.2;1,1;gui_furnace_arrow_bg.png^[transformR270]"..
"image[5.75,1.4;1,1;gui_furnace_arrow_bg.png^[transformR90]"..
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"button[6.68,2.48;1.33,1;dump;Dump]"..
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"list[current_player;main;0,4.25;8,1;]"..
"list[current_player;main;0,5.5;8,3;8]"..
"listring[context;heat]"..
"listring[current_player;main]"..
"listring[context;input]"..
"listring[current_player;main]"..
"listring[context;bucket_in]"..
"listring[current_player;main]"..
"listring[context;bucket_out]"..
"listring[current_player;main]"..
default.get_hotbar_bg(0, 4.25)
end
local function allow_metadata_inventory_put (pos, listname, index, stack, player)
if minetest.is_protected(pos, player:get_player_name()) then
return 0
end
if listname == "bucket_out" then
if stack:get_name() ~= "bucket:bucket_empty" then
return 0
end
return 1
end
if listname == "heat" then
if stack:get_name() ~= "bucket:bucket_lava" then
return 0
end
end
return stack:get_count()
end
local function allow_metadata_inventory_move (pos, from_list, from_index, to_list, to_index, count, player)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
local stack = inv:get_stack(from_list, from_index)
return allow_metadata_inventory_put(pos, to_list, to_index, stack, player)
end
local function allow_metadata_inventory_take (pos, listname, index, stack, player)
if minetest.is_protected(pos, player:get_player_name()) then
return 0
end
return stack:get_count()
end
local function take_from_stack(stack, count)
-- Take count from stack, return nil if the item count reaches 0
local newcount = stack:get_count() - count
if newcount <= 0 then
return nil
end
stack:set_count(newcount)
return stack
end
local function swap_node(pos, name)
local node = minetest.get_node(pos)
if node.name == name then
return
end
node.name = name
minetest.swap_node(pos, node)
end
local function melter_node_timer(pos, elapsed)
local refresh = false
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
-- Current amount of lava in the block
local heat_count = meta:get_int("lava_level")
-- Current amount of metal in the block
local metal_count = meta:get_int("metal_level")
-- Current metal used
local metal = meta:get_string("metal")
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local dumping = meta:get_int("dump")
if dumping and dumping == 1 then
metal_count = 0
metal = ""
refresh = true
meta:set_int("dump", 0)
end
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-- Insert lava bucket into tank, return empty bucket
if inv:get_stack("heat", 1):get_name() == "bucket:bucket_lava" then
if heat_count + 1000 <= metal_melter.max_fuel then
heat_count = heat_count + 1000
inv:set_list("heat", {"bucket:bucket_empty"})
refresh = true
end
end
-- Handle input bucket, only allow a molten metal
local bucket_in = inv:get_stack("bucket_in", 1):get_name()
if bucket_in:find("bucket") and bucket_in ~= "bucket:bucket_empty" then
local bucket_fluid = fluidity.get_fluid_for_bucket(bucket_in)
local fluid_is_metal = fluidity.get_metal_for_fluid(bucket_fluid) ~= nil
local empty_bucket = false
if fluid_is_metal then
if metal ~= "" and metal == bucket_fluid then
if metal_count + 1000 <= metal_melter.max_metal then
metal_count = metal_count + 1000
empty_bucket = true
end
elseif metal == "" then
metal_count = 1000
metal = bucket_fluid
empty_bucket = true
end
end
if empty_bucket then
inv:set_list("bucket_in", {"bucket:bucket_empty"})
refresh = true
end
end
-- Handle bucket output, only allow empty buckets in this slot
local bucket_out = inv:get_stack("bucket_out", 1):get_name()
if bucket_out == "bucket:bucket_empty" and metal ~= "" and inv:get_stack("bucket_out", 1):get_count() == 1 then
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local bucket = fluidity.get_bucket_for_fluid(metal)
if metal_count >= 1000 then
metal_count = metal_count - 1000
inv:set_list("bucket_out", {bucket})
refresh = true
if metal_count == 0 then
metal = ""
end
end
end
-- Handle metal input. Must be a: ingot, lump, block or ore.
local input = inv:get_stack("input", 1):get_name()
if input ~= "" then
local mt, t = metal_melter.get_metal_from_stack(input)
if mt then
local metal_name = fluidity.molten_metals[mt]
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if metal_name and (metal == "" or metal == metal_name) then
local cnt = metal_melter.spec[t]
local heat_consume = math.floor(cnt / 2)
if metal_count + cnt <= metal_melter.max_metal and heat_count >= heat_consume then
metal = metal_name
metal_count = metal_count + cnt
heat_count = heat_count - heat_consume
inv:set_stack("input", 1, take_from_stack(inv:get_stack("input", 1), 1))
refresh = true
end
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end
end
end
-- Refresh metadata and formspec
if refresh then
meta:set_int("lava_level", heat_count)
meta:set_int("metal_level", metal_count)
meta:set_string("metal", metal)
local metal_texture = "default_lava.png"
local metal_name = ""
local infotext = "Metal Melter\n"
infotext = infotext.."Lava: "..heat_count.."/"..metal_melter.max_fuel.." mB \n"
if metal ~= "" then
metal_texture = "fluidity_"..fluidity.get_metal_for_fluid(metal)..".png"
local metal_node = minetest.registered_nodes[metal]
metal_name = fluidity.fluid_name(metal_node.description)
infotext = infotext..metal_name..": "..metal_count.."/"..metal_melter.max_metal.." mB"
else
infotext = infotext.."No Molten Metal"
end
if heat_count > 144 then
swap_node(pos, "metal_melter:metal_melter_filled")
else
swap_node(pos, "metal_melter:metal_melter")
end
meta:set_string("infotext", infotext)
meta:set_string("formspec", metal_melter.get_metal_melter_formspec(
{lava_level=heat_count, metal_level=metal_count, metal_texture=metal_texture, metal=metal_name}))
end
-- If true, calls for another clock cycle.
return refresh
end
local function on_construct(pos)
local meta = minetest.get_meta(pos)
meta:set_string("formspec", metal_melter.get_metal_melter_formspec_default())
-- Create inventory
local inv = meta:get_inventory()
inv:set_size('input', 1)
inv:set_size('heat', 1)
inv:set_size('bucket_in', 1)
inv:set_size('bucket_out', 1)
-- Fluid buffers
meta:set_int('lava_level', 0)
meta:set_int('metal_level', 0)
-- Metal source block
meta:set_string('metal', '')
-- Default infotext
meta:set_string("infotext", "Metal Melter Inactive")
end
local function can_dig(pos, player)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
return inv:is_empty("input") and inv:is_empty("heat") and inv:is_empty("bucket_in") and inv:is_empty("bucket_out")
end
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local function on_receive_fields(pos, formname, fields, sender)
if sender and minetest.is_protected(pos, sender:get_player_name()) then
return 0
end
local meta = minetest.get_meta(pos)
if fields["dump"] then
meta:set_int('dump', 1)
minetest.get_node_timer(pos):start(1.0)
end
end
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minetest.register_node("metal_melter:metal_melter", {
description = "Metal Melter",
tiles = {
"melter_side.png", "melter_side.png",
"melter_side.png", "melter_side.png",
"melter_side.png", "melter_front.png"
},
paramtype2 = "facedir",
groups = {cracky=2},
legacy_facedir_simple = true,
is_ground_content = false,
sounds = default.node_sound_stone_defaults(),
can_dig = can_dig,
on_timer = melter_node_timer,
on_construct = on_construct,
on_metadata_inventory_move = function(pos)
minetest.get_node_timer(pos):start(1.0)
end,
on_metadata_inventory_put = function(pos)
minetest.get_node_timer(pos):start(1.0)
end,
on_blast = function(pos)
local drops = {}
default.get_inventory_drops(pos, "input", drops)
default.get_inventory_drops(pos, "heat", drops)
default.get_inventory_drops(pos, "bucket_in", drops)
default.get_inventory_drops(pos, "bucket_out", drops)
drops[#drops+1] = "metal_melter:metal_melter"
minetest.remove_node(pos)
return drops
end,
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on_receive_fields = on_receive_fields,
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allow_metadata_inventory_put = allow_metadata_inventory_put,
allow_metadata_inventory_move = allow_metadata_inventory_move,
allow_metadata_inventory_take = allow_metadata_inventory_take,
})
minetest.register_node("metal_melter:metal_melter_filled", {
tiles = {
"melter_side.png", "melter_side.png",
"melter_side.png", "melter_side.png",
"melter_side.png", "melter_front.png^melter_front_lava.png"
},
paramtype2 = "facedir",
groups = {cracky=2,not_in_creative_inventory=1},
legacy_facedir_simple = true,
is_ground_content = false,
sounds = default.node_sound_stone_defaults(),
drop = "metal_melter:metal_melter",
light_source = 8,
can_dig = can_dig,
on_timer = melter_node_timer,
on_construct = on_construct,
on_metadata_inventory_move = function(pos)
minetest.get_node_timer(pos):start(1.0)
end,
on_metadata_inventory_put = function(pos)
minetest.get_node_timer(pos):start(1.0)
end,
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on_receive_fields = on_receive_fields,
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allow_metadata_inventory_put = allow_metadata_inventory_put,
allow_metadata_inventory_move = allow_metadata_inventory_move,
allow_metadata_inventory_take = allow_metadata_inventory_take,
})
-- Set a spec
function metal_melter.set_spec(specname, value)
metal_melter.spec[specname] = value
end