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-- The power radiator fuctions like an inductive charger
-- only better in the game setting.
-- The purpose is to allow small appliances to receive power
-- without the overhead of the wiring needed for larger machines.
--
-- The power radiator will consume power corresponding to the
-- sum(power rating of the attached appliances)/0.06
-- Using inductive power transfer is very inefficient so this is
-- set to the factor 0.06.
--
-- Punching the radiator will toggle the power state of all attached appliances.
local power_radius = 12
minetest.register_craft({
output = 'technic:power_radiator 1',
recipe = {
{'technic:stainless_steel_ingot', 'technic:mv_transformer', 'technic:stainless_steel_ingot'},
{'technic:copper_coil', 'technic:machine_casing', 'technic:copper_coil'},
{'technic:rubber', 'technic:mv_cable', 'technic:rubber'},
}
})
------------------------------------------------------------------
-- API for inductive powered nodes:
-- Use the functions below to set the corresponding callbacks
-- Also two nodes are needed: The inactive and the active one. The active must be called <name>_active .
------------------------------------------------------------------
-- Register a new appliance using this function
technic.inductive_nodes = {}
technic.register_inductive_machine = function(name)
table.insert(technic.inductive_nodes, name)
table.insert(technic.inductive_nodes, name.."_active")
end
-- Appliances:
-- has_supply: pos of supply node if the appliance has a power radiator near with sufficient power for the demand else ""
-- EU_demand: The power demand of the device.
-- EU_charge: Actual use. set to EU_demand if active==1
-- active: set to 1 if the device is on
technic.inductive_on_construct = function(pos, eu_demand, infotext)
local meta = minetest.get_meta(pos)
meta:set_string("infotext", infotext)
meta:set_int("technic_inductive_power_machine", 1)
meta:set_int("EU_demand", eu_demand) -- The power demand of this appliance
meta:set_int("EU_charge", 0) -- The actual power draw of this appliance
meta:set_string("has_supply", "") -- Register whether we are powered or not. For use with several radiators.
meta:set_int("active", 0) -- If the appliance can be turned on and off by using it use this.
end
technic.inductive_on_punch_off = function(pos, eu_charge, swapnode)
local meta = minetest.get_meta(pos)
if meta:get_string("has_supply") ~= "" then
technic.swap_node(pos, swapnode)
meta:set_int("active", 1)
meta:set_int("EU_charge",eu_charge)
--print("-----------")
--print("Turn on:")
--print("EU_charge: "..meta:get_int("EU_charge"))
--print("has_supply: "..meta:get_string("has_supply"))
--print("<----------->")
end
end
technic.inductive_on_punch_on = function(pos, eu_charge, swapnode)
local meta = minetest.get_meta(pos)
technic.swap_node(pos, swapnode)
meta:set_int("active", 0)
meta:set_int("EU_charge",eu_charge)
--print("-----------")
--print("Turn off:")
--print("EU_charge: "..meta:get_int("EU_charge"))
--print("has_supply: "..meta:get_string("has_supply"))
--print("<---------->")
end
local shutdown_inductive_appliances = function(pos)
-- The supply radius
local rad = power_radius
-- If the radiator is removed. turn off all appliances in region
-- If another radiator is near it will turn on the appliances again
local positions = minetest.find_nodes_in_area(
{x=pos.x-rad, y=pos.y-rad, z=pos.z-rad},
{x=pos.x+rad, y=pos.y+rad, z=pos.z+rad},
technic.inductive_nodes)
for _, pos1 in pairs(positions) do
local meta1 = minetest.get_meta(pos1)
-- If the appliance is belonging to this node
if meta1:get_string("has_supply") == pos.x..pos.y..pos.z then
local nodename = minetest.get_node(pos1).name
-- Swap the node and make sure it is off and unpowered
if string.sub(nodename, -7) == "_active" then
technic.swap_node(pos1, string.sub(nodename, 1, -8))
meta1:set_int("active", 0)
meta1:set_int("EU_charge", 0)
end
meta1:set_string("has_supply", "")
end
end
end
local toggle_on_off_inductive_appliances = function(pos, node, puncher)
if pos == nil then return end
-- The supply radius
local rad = power_radius
local positions = minetest.find_nodes_in_area(
{x=pos.x-rad, y=pos.y-rad, z=pos.z-rad},
{x=pos.x+rad, y=pos.y+rad, z=pos.z+rad},
technic.inductive_nodes)
for _, pos1 in pairs(positions) do
local meta1 = minetest.get_meta(pos1)
if meta1:get_string("has_supply") == pos.x..pos.y..pos.z then
minetest.punch_node(pos1)
end
end
end
minetest.register_node("technic:power_radiator", {
description = "MV Power Radiator",
tiles = {"technic_lv_cable.png", "technic_lv_cable.png", "technic_lv_cable.png",
"technic_lv_cable.png", "technic_lv_cable.png", "technic_lv_cable.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},
},
on_construct = function(pos)
local meta = minetest.get_meta(pos)
meta:set_int("MV_EU_demand",1) -- Demand on the primary side when idle
meta:set_int("connected_EU_demand",0) -- Potential demand of connected appliances
meta:set_string("infotext", "MV Power Radiator")
end,
on_dig = function(pos, node, digger)
shutdown_inductive_appliances(pos)
return minetest.node_dig(pos, node, digger)
end,
on_punch = function(pos, node, puncher)
toggle_on_off_inductive_appliances(pos, node, puncher)
end
})
minetest.register_abm({
label = "Machines: run power radiator",
nodenames = {"technic:power_radiator"},
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("MV_EU_input")
local eu_demand = meta:get_int("MV_EU_demand")
-- Power off automatically if no longer connected to a switching station
technic.switching_station_timeout_count(pos, "MV")
if eu_input == 0 then
-- No power
meta:set_string("infotext", "MV Power Radiator is unpowered");
-- meta:set_int("active", 1) -- used for setting textures someday maybe
shutdown_inductive_appliances(pos)
meta:set_int("connected_EU_demand", 0)
meta:set_int("MV_EU_demand",1)
elseif eu_input == eu_demand then
-- Powered and ready
-- The maximum EU sourcing a single radiator can provide.
local max_charge = 30000 -- == the max EU demand of the radiator
local connected_EU_demand = meta:get_int("connected_EU_demand")
-- Efficiency factor
local eff_factor = 0.06
-- The supply radius
local rad = power_radius
local meta1 = nil
local pos1 = {}
local used_charge = 0
-- Index all nodes within supply range
local positions = minetest.find_nodes_in_area(
{x=pos.x-rad, y=pos.y-rad, z=pos.z-rad},
{x=pos.x+rad, y=pos.y+rad, z=pos.z+rad},
technic.inductive_nodes)
for _, pos1 in pairs(positions) do
local meta1 = minetest.get_meta(pos1)
-- If not supplied see if this node can handle it.
if meta1:get_string("has_supply") == "" then
-- if demand surpasses the capacity of this node, don't bother adding it.
local app_eu_demand = math.floor(meta1:get_int("EU_demand") / eff_factor)
if connected_EU_demand + app_eu_demand <= max_charge then
-- We can power the appliance. Register, and spend power if it is on.
connected_EU_demand = connected_EU_demand + app_eu_demand
meta1:set_string("has_supply", pos.x..pos.y..pos.z)
--Always 0: used_charge = math.floor(used_charge + meta1:get_int("EU_charge") / eff_factor)
end
elseif meta1:get_string("has_supply") == pos.x..pos.y..pos.z then
-- The appliance has power from this node. Spend power if it is on.
used_charge = used_charge + math.floor(meta1:get_int("EU_charge") / eff_factor)
end
meta:set_string("infotext", "MV Power Radiator is powered ("
..math.floor(used_charge / max_charge * 100)
.."% of maximum power)");
if used_charge == 0 then
meta:set_int("MV_EU_demand", 1) -- Still idle
else
meta:set_int("MV_EU_demand", used_charge)
end
end
-- Save state
meta:set_int("connected_EU_demand", connected_EU_demand)
end
end,
})
technic.register_machine("MV", "technic:power_radiator", technic.receiver)
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