ShadowNinja
2013-10-30 be2f30a1a2f5b6c2aae7fd4cf8231aec2da0844d
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technic.compressor_recipes = {}
 
local S = technic.getter
 
technic.register_compressor_recipe = function(src, src_count, dst, dst_count)
    technic.compressor_recipes[src] = {src_count = src_count, dst_name = dst, dst_count = dst_count}
    if unified_inventory then
        unified_inventory.register_craft({
            type = "compressing",
            output = dst.." "..dst_count,
            items = {src.." "..src_count},
            width = 0,
        })
    end
end
 
technic.get_compressor_recipe = function(item)
    if technic.compressor_recipes[item.name] and 
       item.count >= technic.compressor_recipes[item.name].src_count then
        return technic.compressor_recipes[item.name]
    else
        return nil
    end
end
 
technic.register_compressor_recipe("default:snowblock",         1, "default:ice",             1)
technic.register_compressor_recipe("default:sand",              1, "default:sandstone",       1)
technic.register_compressor_recipe("default:desert_sand",       1, "default:desert_stone",    1)
technic.register_compressor_recipe("technic:mixed_metal_ingot", 1, "technic:composite_plate", 1)
technic.register_compressor_recipe("default:copper_ingot",      5, "technic:copper_plate",    1)
technic.register_compressor_recipe("technic:coal_dust",         4, "technic:graphite",        1)
technic.register_compressor_recipe("technic:carbon_cloth",      1, "technic:carbon_plate",    1)
technic.register_compressor_recipe("technic:enriched_uranium",  4, "technic:uranium_fuel",    1)
 
 
minetest.register_alias("compressor", "technic:compressor")
minetest.register_craft({
    output = 'technic:compressor',
    recipe = {
        {'default:stone',    'default:stone',    'default:stone'},
        {'mesecons:piston',    'technic:motor',    'mesecons:piston'},
        {'default:stone',    'technic:lv_cable0',    'default:stone'},
    }
})
 
local compressor_formspec =
    "invsize[8,9;]"..
    "label[0,0;"..S("Compressor").."]"..
    "list[current_name;src;3,1;1,1;]"..
    "list[current_name;dst;5,1;2,2;]"..
    "list[current_player;main;0,5;8,4;]"
 
minetest.register_node("technic:compressor", {
    description = S("Compressor"),
    tiles = {"technic_compressor_top.png",  "technic_compressor_bottom.png",
             "technic_compressor_side.png", "technic_compressor_side.png",
             "technic_compressor_back.png", "technic_compressor_front.png"},
    paramtype2 = "facedir",
    groups = {cracky=2},
    legacy_facedir_simple = true,
    sounds = default.node_sound_wood_defaults(),
    on_construct = function(pos)
        local meta = minetest.get_meta(pos)
        meta:set_string("infotext", S("Compressor"))
        meta:set_string("formspec", compressor_formspec)
        local inv = meta:get_inventory()
        inv:set_size("src", 1)
        inv:set_size("dst", 4)
    end,
    can_dig = function(pos,player)
        local meta = minetest.get_meta(pos)
        local inv = meta:get_inventory()
        if not inv:is_empty("src") or not inv:is_empty("dst") then
            minetest.chat_send_player(player:get_player_name(),
                    S("Machine cannot be removed because it is not empty"))
            return false
        else
            return true
        end
    end,
})
 
minetest.register_node("technic:compressor_active", {
    description = S("Compressor"),
    tiles = {"technic_compressor_top.png",  "technic_compressor_bottom.png",
             "technic_compressor_side.png", "technic_compressor_side.png",
             "technic_compressor_back.png", "technic_compressor_front_active.png"},
    paramtype2 = "facedir",
    groups = {cracky=2, not_in_creative_inventory=1},
    legacy_facedir_simple = true,
    sounds = default.node_sound_wood_defaults(),
    can_dig = function(pos,player)
        local meta = minetest.get_meta(pos);
        local inv = meta:get_inventory()
        if not inv:is_empty("src") or not inv:is_empty("dst") then
            minetest.chat_send_player(player:get_player_name(),
                    S("Machine cannot be removed because it is not empty"))
            return false
        else
            return true
        end
    end,
})
 
minetest.register_abm({
    nodenames = {"technic:compressor","technic:compressor_active"},
    interval = 1,
    chance   = 1,
    action = function(pos, node, active_object_count, active_object_count_wider)
        local meta         = minetest.get_meta(pos)
        local eu_input     = meta:get_int("LV_EU_input")
        local machine_name = S("Compressor")
        local machine_node = "technic:compressor"
        local demand       = 300
 
         -- Setup meta data if it does not exist.
        if not eu_input then
            meta:set_int("LV_EU_demand", demand)
            meta:set_int("LV_EU_input", 0)
            return
        end
 
        -- Power off automatically if no longer connected to a switching station
        technic.switching_station_timeout_count(pos, "LV")
        local inv    = meta:get_inventory()
        local empty  = inv:is_empty("src")
        local srcstack  = inv:get_stack("src", 1)
        local src_item, recipe, result = nil, nil, nil
 
        if srcstack then
            src_item = srcstack:to_table()
        end
        if src_item then
            recipe = technic.get_compressor_recipe(src_item)
        end
        if recipe then
            result = {name=recipe.dst_name, count=recipe.dst_count}
        end 
        if empty or (not result) or
           (not inv:room_for_item("dst", result)) then
            hacky_swap_node(pos, machine_node)
            meta:set_string("infotext", S("%s Idle"):format(machine_name))
            meta:set_int("LV_EU_demand", 0)
            meta:set_int("src_time", 0)
            return
        end
 
        if eu_input < demand then
            hacky_swap_node(pos, machine_node)
            meta:set_string("infotext", S("%s Unpowered"):format(machine_name))
        elseif eu_input >= demand then
            hacky_swap_node(pos, machine_node.."_active")
            meta:set_string("infotext", S("%s Active"):format(machine_name))
 
            meta:set_int("src_time", meta:get_int("src_time") + 1)
            if meta:get_int("src_time") >= 4 then 
                meta:set_int("src_time", 0)
                srcstack:take_item(recipe.src_count)
                inv:set_stack("src", 1, srcstack)
                inv:add_item("dst", result)
            end
        end
        meta:set_int("LV_EU_demand", demand)
    end
})
 
technic.register_machine("LV", "technic:compressor",        technic.receiver)
technic.register_machine("LV", "technic:compressor_active", technic.receiver)