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technic/technic/machines/supply_converter.lua

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-- 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,
})
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