added a mv grinder

Jonathan Raphael Joachim Kolberg

2013-07-19 d37cf7d5365837b8e26af2c5fa6abe0d712c6716

added a mv grinder

 technic/machines/mv/grinder.lua

New file
@@ -0,0 +1,292 @@
-- MV grinder

minetest.register_craft({
    output = 'technic:mv_grinder',
    recipe = {
        {'technic:stainless_steel_ingot', 'technic:grinder', 'technic:stainless_steel_ingot'},
        {'pipeworks:tube_000000', 'technic:mv_transformer', 'pipeworks:tube_000000'},
        {'technic:stainless_steel_ingot', 'technic:mv_cable', 'technic:stainless_steel_ingot'},
    }
})
minetest.register_craftitem("technic:mv_grinder", {
    description = "MV Grinder",
    stack_max = 99,
})

local mv_grinder_formspec =
   "invsize[8,10;]"..
   "list[current_name;src;3,1;1,1;]"..
   "list[current_name;dst;5,1;2,2;]"..
   "list[current_player;main;0,6;8,4;]"..
   "label[0,0;MV Grinder]"..
   "list[current_name;upgrade1;1,4;1,1;]"..
   "list[current_name;upgrade2;2,4;1,1;]"..
   "label[1,5;Upgrade Slots]"

minetest.register_node(
"technic:mv_grinder",
{
    description = "MV Grinder",
    tiles = {"technic_mv_grinder_top.png", "technic_mv_grinder_bottom.png", "technic_mv_grinder_side.png",
            "technic_mv_grinder_side.png", "technic_mv_grinder_side.png", "technic_mv_grinder_front.png"},
    paramtype2 = "facedir",
    groups = {cracky=2, tubedevice=1,tubedevice_receiver=1,},
    tube={insert_object=function(pos,node,stack,direction)
            local meta=minetest.env:get_meta(pos)
            local inv=meta:get_inventory()
            return inv:add_item("src",stack)
        end,
        can_insert=function(pos,node,stack,direction)
            local meta=minetest.env:get_meta(pos)
            local inv=meta:get_inventory()
            return inv:room_for_item("src",stack)
        end,
    },
    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", "MV Grinder")
        meta:set_float("technic_mv_power_machine", 1)
        meta:set_int("tube_time",  0)
        meta:set_string("formspec", mv_grinder_formspec)
        local inv = meta:get_inventory()
        inv:set_size("src", 1)
        inv:set_size("dst", 4)
        inv:set_size("upgrade1", 1)
        inv:set_size("upgrade2", 1)
    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") or not inv:is_empty("upgrade1") or not inv:is_empty("upgrade2") 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:mv_grinder_active",
    {
        description = "Grinder",
        tiles = {"technic_mv_grinder_top.png", "technic_mv_grinder_bottom.png", "technic_mv_grinder_side.png",
            "technic_mv_grinder_side.png", "technic_mv_grinder_side.png", "technic_mv_grinder_front_active.png"},
        paramtype2 = "facedir",
        groups = {cracky=2,tubedevice=1,tubedevice_receiver=1,not_in_creative_inventory=1},
        tube={    insert_object=function(pos,node,stack,direction)
                local meta=minetest.env:get_meta(pos)
                local inv=meta:get_inventory()
                return inv:add_item("src",stack)
            end,
            can_insert=function(pos,node,stack,direction)
                local meta=minetest.env:get_meta(pos)
                local inv=meta:get_inventory()
                return inv:room_for_item("src",stack)
            end,
        },
        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") or not inv:is_empty("upgrade1") or not inv:is_empty("upgrade2") 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,
        -- These three makes sure upgrades are not moved in or out while the grinder is active.
        allow_metadata_inventory_put = function(pos, listname, index, stack, player)
            if listname == "src" or listname == "dst" then
                return 99
            else
                return 0 -- Disallow the move
            end
        end,
        allow_metadata_inventory_take = function(pos, listname, index, stack, player)
            if listname == "src" or listname == "dst" then
                return 99
            else
                return 0 -- Disallow the move
            end
        end,
        allow_metadata_inventory_move = function(pos, from_list, to_list, to_list, to_index, count, player)
            return 0
        end,
    })

local send_grinded_items = function(pos,x_velocity,z_velocity)
    -- Send items on their way in the pipe system.
    local meta=minetest.env:get_meta(pos) 
    local inv = meta:get_inventory()
    local i=0
    for _,stack in ipairs(inv:get_list("dst")) do
        i=i+1
        if stack then
            local item0=stack:to_table()
            if item0 then 
                item0["count"]="1"
                local item1=tube_item({x=pos.x,y=pos.y,z=pos.z},item0)
                item1:get_luaentity().start_pos = {x=pos.x,y=pos.y,z=pos.z}
                item1:setvelocity({x=x_velocity, y=0, z=z_velocity})
                item1:setacceleration({x=0, y=0, z=0})
                stack:take_item(1);
                inv:set_stack("dst", i, stack)
                return
            end
        end
    end
end

minetest.register_abm(
    { nodenames = {"technic:mv_grinder","technic:mv_grinder_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("MV_EU_input")
        local state        = meta:get_int("state")
        local next_state   = state

        -- Machine information
        local machine_name         = "MV Grinder"
        local machine_node         = "technic:mv_grinder"
        local machine_state_demand = { 50, 600, 450, 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("MV_EU_demand", machine_state_demand[1])
            meta:set_int("MV_EU_input", 0)
            return
        end
	
        -- Power off automatically if no longer connected to a switching station
        technic.switching_station_timeout_count(pos, "MV")
	
        -- 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")
			
            -- get the names of the upgrades
            local upg_item1
            local upg_item1_name=""
            local upg_item2
            local upg_item2_name=""
            local srcstack = inv:get_stack("upgrade1", 1)
            if  srcstack then upg_item1=srcstack:to_table() end
            srcstack = inv:get_stack("upgrade2", 1)
            if  srcstack then upg_item2=srcstack:to_table() end
            if upg_item1 then upg_item1_name=upg_item1.name end
            if upg_item2 then upg_item2_name=upg_item2.name end

            -- Save some power by installing battery upgrades. Fully upgraded makes this
            -- furnace use the same amount of power as the LV version
            local EU_saving_upgrade = 0
            if upg_item1_name=="technic:battery" then EU_saving_upgrade = EU_saving_upgrade + 1 end
            if upg_item2_name=="technic:battery" then EU_saving_upgrade = EU_saving_upgrade + 1 end

            -- Tube loading speed can be upgraded using control logic units
            local tube_speed_upgrade = 0
            if upg_item1_name=="technic:control_logic_unit" then tube_speed_upgrade = tube_speed_upgrade + 1 end
            if upg_item2_name=="technic:control_logic_unit" then tube_speed_upgrade = tube_speed_upgrade + 1 end

            -- Handle pipeworks (consumes tube_speed_upgrade)
            local pos1={x=pos.x, y=pos.y, z=pos.z}
            local x_velocity=0
            local z_velocity=0

            -- Output is on the left side of the furnace
            if node.param2==3 then pos1.z=pos1.z-1 z_velocity =-1 end
            if node.param2==2 then pos1.x=pos1.x-1 x_velocity =-1 end
            if node.param2==1 then pos1.z=pos1.z+1 z_velocity = 1 end
            if node.param2==0 then pos1.x=pos1.x+1 x_velocity = 1 end

            local output_tube_connected = false
            local meta1 = minetest.env:get_meta(pos1) 
            if meta1:get_int("tubelike") == 1 then
                output_tube_connected=true
            end
            tube_time = meta:get_int("tube_time")
            tube_time = tube_time + tube_speed_upgrade
            if tube_time > 3 then
                tube_time = 0
                if output_tube_connected then
                    send_grinded_items(pos,x_velocity,z_velocity)
                end
            end
            meta:set_int("tube_time", tube_time)

            -- The machine shuts down if we have nothing to grind and no tube is connected
            -- or if we have nothing to send with a tube connected.
            if    (not output_tube_connected and inv:is_empty("src"))
            or (    output_tube_connected and inv:is_empty("dst")) then
                next_state = 1
            end

            if state == 1 then
                hacky_swap_node(pos, machine_node)
                meta:set_string("infotext", machine_name.." Idle")

                local result = technic.get_grinder_recipe(inv:get_stack("src", 1))
                if not empty and result and inv:room_for_item("dst",result) then
                    meta:set_int("src_time", 0)
                    next_state = 2+EU_saving_upgrade
                end

            elseif state == 2 or state == 3 or state == 4 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
                        local result = technic.get_grinder_recipe(inv:get_stack("src", 1))

                        meta:set_int("src_time", 0)
                        if inv:room_for_item("dst",result) then
                            -- take stuff from "src" list
                            srcstack = inv:get_stack("src", 1)
                            srcstack:take_item()
                            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("MV_EU_demand", machine_state_demand[next_state])
            meta:set_int("state", next_state)
        end
    end
})

technic.register_MV_machine ("technic:mv_grinder","RE")
technic.register_MV_machine ("technic:mv_grinder_active","RE")

 technic/machines/mv/init.lua

@@ -5,6 +5,7 @@
dofile(path.."/solar_array.lua")
dofile(path.."/electric_furnace.lua")
dofile(path.."/alloy_furnace.lua")
dofile(path.."/grinder.lua")

-- The power radiator supplies appliances with inductive coupled power:
-- Lighting and associated textures is taken directly from VanessaE's homedecor and made electric.