-- The supply converter is a generic device which can convert from -- LV to MV and back, and HV to MV and back. -- The machine will not convert from HV directly to LV. -- The machine is configured by the wiring below and above it. -- It is prepared for an upgrade slot if this is to be implemented later. -- -- The conversion factor is a constant and the conversion is a lossy operation. -- -- It works like this: -- The top side is setup as the "RE" side, the bottom as the "PR" side. -- Once the RE side is powered it will deliver power to the other side. -- Unused power is wasted just like any other producer! -- minetest.register_node( "technic:supply_converter", { description = "Supply Converter", tiles = {"technic_supply_converter_top.png", "technic_supply_converter_bottom.png", "technic_supply_converter_side.png", "technic_supply_converter_side.png", "technic_supply_converter_side.png", "technic_supply_converter_side.png"}, groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2}, sounds = default.node_sound_wood_defaults(), drawtype = "nodebox", paramtype = "light", is_ground_content = true, node_box = { type = "fixed", fixed = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}, }, selection_box = { type = "fixed", fixed = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}, }, on_construct = function(pos) local meta = minetest.env:get_meta(pos) meta:set_float("technic_hv_power_machine", 1) meta:set_float("technic_mv_power_machine", 1) meta:set_float("technic_power_machine", 1) meta:set_string("infotext", "Supply Converter") meta:set_float("active", false) end, }) minetest.register_craft({ output = 'technic:supply_converter 1', recipe = { {'technic:stainless_steel_ingot', 'technic:stainless_steel_ingot','technic:stainless_steel_ingot'}, {'technic:mv_transformer', 'technic:mv_cable', 'technic:lv_transformer'}, {'technic:mv_cable', 'technic:rubber', 'technic:lv_cable'}, } }) minetest.register_abm( { nodenames = {"technic:supply_converter"}, interval = 1, chance = 1, action = function(pos, node, active_object_count, active_object_count_wider) -- Conversion factors (a picture of V*A - loss) Asymmetric. local lv_mv_factor = 5 -- division (higher is less efficient) local mv_lv_factor = 4 -- multiplication (higher is more efficient) local mv_hv_factor = 5 -- division local hv_mv_factor = 4 -- multiplication local max_lv_demand = 2000 -- The increment size power supply tier. Determines how many are needed local max_mv_demand = 2000 -- -""- local max_hv_demand = 2000 -- -""- -- Machine information local machine_name = "Supply Converter" local meta = minetest.env:get_meta(pos) local upgrade = "" -- Replace with expansion slot later?? -- High voltage on top, low at bottom regardless of converter direction local pos_up = {x=pos.x, y=pos.y+1, z=pos.z} local pos_down = {x=pos.x, y=pos.y-1, z=pos.z} local meta_up = minetest.env:get_meta(pos_up) local meta_down = minetest.env:get_meta(pos_down) local convert_MV_LV = 0 local convert_LV_MV = 0 local convert_MV_HV = 0 local convert_HV_MV = 0 -- check cabling if meta_up:get_float("mv_cablelike") == 1 and meta_down:get_float("cablelike") == 1 then convert_MV_LV = 1 upgrade = "MV-LV step down" end if meta_up:get_float("cablelike") == 1 and meta_down:get_float("mv_cablelike") == 1 then convert_LV_MV = 1 upgrade = "LV-MV step up" end if meta_up:get_float("mv_cablelike") == 1 and meta_down:get_float("hv_cablelike") == 1 then convert_MV_HV = 1 upgrade = "MV-HV step up" end if meta_up:get_float("hv_cablelike") == 1 and meta_down:get_float("mv_cablelike") == 1 then convert_HV_MV = 1 upgrade = "HV-MV step down" end --print("Cabling:"..convert_MV_LV.."|"..convert_LV_MV.."|"..convert_HV_MV.."|"..convert_MV_HV) if convert_MV_LV == 0 and convert_LV_MV == 0 and convert_HV_MV == 0 and convert_MV_HV == 0 then meta:set_string("infotext", machine_name.." has bad cabling") meta:set_int("LV_EU_demand", 0) meta:set_int("LV_EU_supply", 0) meta:set_int("LV_EU_input", 0) meta:set_int("MV_EU_demand", 0) meta:set_int("MV_EU_supply", 0) meta:set_int("MV_EU_input", 0) meta:set_int("HV_EU_demand", 0) meta:set_int("HV_EU_supply", 0) meta:set_int("HV_EU_input", 0) return end -- The node is programmed with an upgrade slot -- containing a MV-LV step down, LV-MV step up, HV-MV step down or MV-HV step up unit if upgrade == "" then meta:set_string("infotext", machine_name.." has an empty converter slot"); technic.unregister_LV_machine("technic:supply_converter") technic.unregister_MV_machine("technic:supply_converter") technic.unregister_HV_machine("technic:supply_converter") meta:set_int("LV_EU_demand", 0) meta:set_int("LV_EU_supply", 0) meta:set_int("LV_EU_input", 0) meta:set_int("MV_EU_demand", 0) meta:set_int("MV_EU_supply", 0) meta:set_int("MV_EU_input", 0) meta:set_int("HV_EU_demand", 0) meta:set_int("HV_EU_supply", 0) meta:set_int("HV_EU_input", 0) return end -- State machine if upgrade == "MV-LV step down" and convert_MV_LV then -- Register machine type technic.register_LV_machine("technic:supply_converter","PR") technic.register_MV_machine("technic:supply_converter","RE") -- Power off automatically if no longer connected to a switching station technic.switching_station_timeout_count(pos, "MV") local eu_input = meta:get_int("MV_EU_input") if eu_input == 0 then -- Unpowered - go idle --hacky_swap_node(pos, machine_node) meta:set_string("infotext", machine_name.." Unpowered") meta:set_int("LV_EU_supply", 0) meta:set_int("MV_EU_supply", 0) meta:set_int("LV_EU_demand", 0) meta:set_int("MV_EU_demand", max_mv_demand) else -- MV side has got power to spare meta:set_string("infotext", machine_name.." is active (MV:"..max_mv_demand.."->LV:"..eu_input*mv_lv_factor..")"); meta:set_int("LV_EU_supply", eu_input*mv_lv_factor) end --------------------------------------------------- elseif upgrade == "LV-MV step up" and convert_LV_MV then -- Register machine type technic.register_LV_machine("technic:supply_converter","RE") technic.register_MV_machine("technic:supply_converter","PR") -- Power off automatically if no longer connected to a switching station technic.switching_station_timeout_count(pos, "LV") local eu_input = meta:get_int("LV_EU_input") if eu_input == 0 then -- Unpowered - go idle --hacky_swap_node(pos, machine_node) meta:set_string("infotext", machine_name.." Unpowered") meta:set_int("LV_EU_supply", 0) meta:set_int("MV_EU_supply", 0) meta:set_int("LV_EU_demand", max_lv_demand) meta:set_int("MV_EU_demand", 0) else -- LV side has got power to spare meta:set_string("infotext", machine_name.." is active (LV:"..max_lv_demand.."->MV:"..eu_input/lv_mv_factor..")"); meta:set_int("MV_EU_supply", eu_input/lv_mv_factor) end --------------------------------------------------- elseif upgrade == "HV-MV step down" and convert_HV_MV then -- Register machine type technic.register_MV_machine("technic:supply_converter","PR") technic.register_HV_machine("technic:supply_converter","RE") -- Power off automatically if no longer connected to a switching station technic.switching_station_timeout_count(pos, "HV") local eu_input = meta:get_int("HV_EU_input") if eu_input == 0 then -- Unpowered - go idle --hacky_swap_node(pos, machine_node) meta:set_string("infotext", machine_name.." Unpowered") meta:set_int("MV_EU_supply", 0) meta:set_int("HV_EU_supply", 0) meta:set_int("MV_EU_demand", 0) meta:set_int("HV_EU_demand", max_hv_demand) else -- HV side has got power to spare meta:set_string("infotext", machine_name.." is active (HV:"..max_hv_demand.."->MV:"..eu_input*hv_mv_factor..")"); meta:set_int("MV_EU_supply", eu_input*hv_mv_factor) end --------------------------------------------------- elseif upgrade == "MV-HV step up" and convert_MV_HV then -- Register machine type technic.register_MV_machine("technic:supply_converter","RE") technic.register_HV_machine("technic:supply_converter","PR") -- Power off automatically if no longer connected to a switching station technic.switching_station_timeout_count(pos, "MV") local eu_input = meta:get_int("MV_EU_input") if eu_input == 0 then -- Unpowered - go idle --hacky_swap_node(pos, machine_node) meta:set_string("infotext", machine_name.." Unpowered") meta:set_int("MV_EU_supply", 0) meta:set_int("HV_EU_supply", 0) meta:set_int("MV_EU_demand", max_mv_demand) meta:set_int("HV_EU_demand", 0) else -- MV side has got power to spare meta:set_string("infotext", machine_name.." is active (MV:"..max_mv_demand.."->HV:"..eu_input/mv_hv_factor..")"); meta:set_int("HV_EU_supply", eu_input/mv_hv_factor) end --------------------------------------------------- end end, })