Add compressor

RealBadAngel

2013-07-15 410afaa58369cdcdf1fce598addb7cc74aaff074

Add compressor

 technic/machines/lv/compressor.lua

New file
@@ -0,0 +1,207 @@
technic.compressor_recipes ={}

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)


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_cable',    'default:stone'},
    }
})

minetest.register_craftitem("technic:compressor", {
    description = "Compressor",
    stack_max = 99,
})

local compressor_formspec =
    "invsize[8,9;]"..
    "label[0,0;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 = "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.env:get_meta(pos)
        meta:set_string("infotext", "Compressor")
        meta:set_float("technic_power_machine", 1)
        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.env: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(), "Machine cannot be removed because it is not empty");
            return false
        else
            return true
        end
    end,
})

minetest.register_node("technic:compressor_active", {
    description = "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.env: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(), "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)
        -- Run a machine through its states. Takes the same arguments as the ABM action
        -- and adds the machine's states and any extra data which is needed by the machine.
        -- A machine is characterized by running through a set number of states (usually 2:
        -- Idle and active) in some order. A state decides when to move to the next one
        -- and the machine only changes state if it is powered correctly.
        -- The machine will automatically shut down if disconnected from power in some fashion.
        local meta         = minetest.env:get_meta(pos)
        local eu_input     = meta:get_int("LV_EU_input")
        local state        = meta:get_int("state")
        local next_state   = state

        -- Machine information
        local machine_name         = "Compressor"
        local machine_node         = "technic:compressor"
        local machine_state_demand = { 50, 300 }
 
         -- Setup meta data if it does not exist. state is used as an indicator of this
        if state == 0 then
            meta:set_int("state", 1)
            meta:set_int("LV_EU_demand", machine_state_demand[1])
            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")
 
        -- State machine
        if eu_input == 0 then
            -- unpowered - go idle
            hacky_swap_node(pos, machine_node)
            meta:set_string("infotext", machine_name.." Unpowered")
            next_state = 1
        elseif eu_input == machine_state_demand[state] then
            -- Powered - do the state specific actions
			    
            local inv    = meta:get_inventory()
            local empty  = inv:is_empty("src")
            local srcstack  = inv:get_stack("src", 1)
            local src_item = nil
            local recipe = nil
            local result = 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 state == 1 then
                hacky_swap_node(pos, machine_node)
                meta:set_string("infotext", machine_name.." Idle")

                if not empty and result and inv:room_for_item("dst",result) then
                    meta:set_int("src_time", 0)
                    next_state = 2
                end
            elseif state == 2 then
                hacky_swap_node(pos, machine_node.."_active")
                meta:set_string("infotext", machine_name.." Active")

                if empty then
                    next_state = 1
                else
                    meta:set_int("src_time", meta:get_int("src_time") + 1)
                    if meta:get_int("src_time") == 4 then 
                        -- 4 ticks per output
                        -- check if there's room for output in "dst" list

                        meta:set_int("src_time", 0)
                        if recipe and inv:room_for_item("dst",result) then
                            -- take stuff from "src" list
                            srcstack:take_item(recipe.src_count)
                            inv:set_stack("src", 1, srcstack)
                            -- Put result in "dst" list
                            inv:add_item("dst", result)
                        else
                            -- all full: go idle
                            next_state = 1
                        end
                    end
                end
            end
        end
        -- Change state?
        if next_state ~= state then
            meta:set_int("LV_EU_demand", machine_state_demand[next_state])
            meta:set_int("state", next_state)
        end
    end
})

technic.register_LV_machine ("technic:compressor","RE")
technic.register_LV_machine ("technic:compressor_active","RE")

 technic/machines/lv/init.lua

@@ -16,4 +16,4 @@
dofile(path.."/cnc_api.lua")
dofile(path.."/cnc_nodes.lua")
dofile(path.."/extractor.lua")

dofile(path.."/compressor.lua")