442 lines
15 KiB
Lua
442 lines
15 KiB
Lua
--[[
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Networks
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========
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Copyright (C) 2021 Joachim Stolberg
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AGPL v3
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See LICENSE.txt for more information
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Power API for power consuming and generating nodes
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]]--
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-- for lazy programmers
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local S2P = minetest.string_to_pos
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local P2S = function(pos) if pos then return minetest.pos_to_string(pos) end end
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local M = minetest.get_meta
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local N = tubelib2.get_node_lvm
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local OBS = networks.node_observer
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local Flip = tubelib2.Turn180Deg
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networks.power = {}
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networks.registered_networks.power = {}
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local DEFAULT_DATA = {
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curr_load = 0, -- network storage value
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max_capa = 0, -- network storage capacity
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consumed = 0, -- consumed power by consumers
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provided = 0, -- provided power by generators
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available = 0, -- max. available generator power
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netw_num = 0, -- network number
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}
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-- Storage parameters:
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-- capa = maximum value in power units
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-- load = current value in power units
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-- level = ratio value (load/capa) (0..1)
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local Power = {} -- {netID = {curr_load, max_capa, consumed, provided, available}}
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-- Determine load, capa and other power network data
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local function get_power_data(pos, tlib2, outdir, netID)
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assert(outdir)
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local netw = networks.get_network_table(pos, tlib2, outdir) or {}
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local max_capa = 1 -- to prevent nan
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local max_perf = 0
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local curr_load = 0
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-- Generators
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for _,item in ipairs(netw.gen or {}) do
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local ndef = minetest.registered_nodes[N(item.pos).name]
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local data = ndef.get_generator_data and ndef.get_generator_data(item.pos, Flip[item.indir], tlib2)
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if data then
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OBS("get_power_data", item.pos, data)
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max_capa = max_capa + (data.capa or 0)
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max_perf = max_perf + (data.perf or 0)
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curr_load = curr_load + ((data.level or 0) * (data.capa or 0))
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end
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end
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-- Storage systems
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for _,item in ipairs(netw.sto or {}) do
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local ndef = minetest.registered_nodes[N(item.pos).name]
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local data = ndef.get_storage_data and ndef.get_storage_data(item.pos, Flip[item.indir], tlib2)
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if data then
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OBS("get_power_data", item.pos, data)
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max_capa = max_capa + (data.capa or 0)
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curr_load = curr_load + ((data.level or 0) * (data.capa or 0))
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end
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end
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Power[netID] = {
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curr_load = curr_load, -- network storage value
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max_capa = max_capa, -- network storage capacity
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max_perf = max_perf, -- max. available power
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consumed = 0, -- consumed power
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provided = 0, -- provided power
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available = 0, -- available power
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num_nodes = netw.num_nodes,
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}
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return Power[netID]
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end
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-------------------------------------------------------------------------------
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-- For all types of nodes
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-------------------------------------------------------------------------------
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-- names: list of node names
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-- tlib2: tubelib2 instance
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-- node_type: one of "gen", "con", "sto", "junc"
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-- valid_sides: something like {"L", "R"} or nil
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function networks.power.register_nodes(names, tlib2, node_type, valid_sides)
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if node_type == "gen" then
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assert(#valid_sides <= 2)
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elseif node_type == "sto" then
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assert(#valid_sides == 1)
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elseif node_type == "con" or node_type == "junc" then
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assert(not valid_sides or type(valid_sides) == "table")
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valid_sides = valid_sides or {"B", "R", "F", "L", "D", "U"}
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elseif node_type and type(node_type) == "string" then
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valid_sides = valid_sides or {"B", "R", "F", "L", "D", "U"}
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else
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error("parameter error")
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end
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tlib2:add_secondary_node_names(names)
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networks.registered_networks.power[tlib2.tube_type] = tlib2
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for _, name in ipairs(names) do
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local ndef = minetest.registered_nodes[name]
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local tbl = ndef.networks or {}
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assert(tbl[tlib2.tube_type] == nil, "more than one call of 'networks.power.register_nodes' for " .. names[1])
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tbl[tlib2.tube_type] = {ntype = node_type}
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minetest.override_item(name, {networks = tbl})
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tlib2:set_valid_sides(name, valid_sides)
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end
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end
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-- To be called for each power network change via
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-- tubelib2_on_update2 or register_on_tube_update2
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function networks.power.update_network(pos, outdir, tlib2, node)
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local ndef = networks.net_def(pos, tlib2.tube_type)
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assert(ndef, "node " .. N(pos).name .. " has no 'networks." .. tlib2.tube_type .. "' table")
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if ndef.ntype == "junc" then
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outdir = 0
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end
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local netID = networks.get_netID(pos, outdir)
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if netID then
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Power[netID] = nil
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end
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networks.update_network(pos, outdir, tlib2, node)
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end
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-------------------------------------------------------------------------------
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-- Consumer
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-------------------------------------------------------------------------------
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-- Function checks for a power grid, not for enough power
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-- Param outdir is optional
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function networks.power.power_available(pos, tlib2, outdir)
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for _,outdir in ipairs(networks.get_outdirs(pos, tlib2, outdir)) do
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local netID = networks.determine_netID(pos, tlib2, outdir)
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if netID then
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local pwr = Power[netID] or get_power_data(pos, tlib2, outdir, netID)
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OBS("power_available", pos, pwr)
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return pwr.curr_load > 0
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end
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end
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end
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-- Param outdir is optional
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function networks.power.consume_power(pos, tlib2, outdir, amount)
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assert(amount)
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for _,outdir in ipairs(networks.get_outdirs(pos, tlib2, outdir)) do
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local netID = networks.determine_netID(pos, tlib2, outdir)
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if netID then
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local pwr = Power[netID] or get_power_data(pos, tlib2, outdir, netID)
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OBS("consume_power", pos, {outdir = outdir, amount = amount}, pwr)
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if pwr.curr_load >= amount then
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pwr.curr_load = pwr.curr_load - amount
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pwr.consumed = pwr.consumed + amount
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return amount
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else
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local consumed = pwr.curr_load
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pwr.curr_load = 0
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pwr.consumed = pwr.consumed + consumed
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return consumed
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end
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end
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end
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return 0
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end
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-------------------------------------------------------------------------------
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-- Generator
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-------------------------------------------------------------------------------
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-- amount is the maximum power, the generator can provide.
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-- cp1 and cp2 are control points for the charge regulator.
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-- From cp1 the charging power is reduced more and more and reaches zero at cp2.
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--
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-- A
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-- |
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-- 100 % |-------------------__
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-- | --__
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-- | --__
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-- | --__
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-- --+------------------+---------------+---->
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-- | cp1 cp2
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--
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function networks.power.provide_power(pos, tlib2, outdir, amount, cp1, cp2)
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assert(outdir)
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assert(amount and amount > 0)
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local netID = networks.determine_netID(pos, tlib2, outdir)
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if netID then
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local pwr = Power[netID] or get_power_data(pos, tlib2, outdir, netID)
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local x = pwr.curr_load / pwr.max_capa
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OBS("provide_power", pos, {outdir = outdir, amount = amount}, pwr)
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pwr.available = pwr.available + amount
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amount = math.min(amount, pwr.max_capa - pwr.curr_load)
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cp1 = cp1 or 0.8
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cp2 = cp2 or 1.0
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if x < cp1 then -- charge with full power
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pwr.curr_load = pwr.curr_load + amount
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pwr.provided = pwr.provided + amount
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return amount
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elseif x < cp2 then -- charge with reduced power
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local factor = 1 - ((x - cp1) / (cp2 - cp1))
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local provided = amount * factor
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pwr.curr_load = pwr.curr_load + provided
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pwr.provided = pwr.provided + provided
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return provided
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else -- turn off
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return 0
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end
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end
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return 0
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end
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-- Function for generators with storage capacity
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function networks.power.get_storage_load(pos, tlib2, outdir, amount)
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local netID = networks.determine_netID(pos, tlib2, outdir)
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if netID then
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local pwr = Power[netID] or get_power_data(pos, tlib2, outdir, netID)
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OBS("get_storage_load", pos, pwr)
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if pwr.max_capa and pwr.max_capa > 0 then
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return pwr.curr_load / pwr.max_capa * amount
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else
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error("invalid pwr.max_capa", pwr.max_capa)
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end
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end
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return 0
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end
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-------------------------------------------------------------------------------
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-- Storage
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-------------------------------------------------------------------------------
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-- Function returns a table with storage level as ratio (0..1) and the
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-- charging state (1 = charging, -1 = uncharging, or 0)
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-- Function provides nil if no network is available
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function networks.power.get_storage_data(pos, tlib2, outdir)
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assert(outdir)
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local netID = networks.determine_netID(pos, tlib2, outdir)
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if netID then
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local pwr = Power[netID] or get_power_data(pos, tlib2, outdir, netID)
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OBS("get_storage_data", pos, pwr)
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local charging = (pwr.provided > pwr.consumed and 1) or (pwr.provided < pwr.consumed and -1) or 0
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return {level = pwr.curr_load / pwr.max_capa, charging = charging}
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end
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end
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-- To be called for each network storage change (turn on/off of storage/generator nodes)
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function networks.power.start_storage_calc(pos, tlib2, outdir)
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assert(outdir)
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local netID = networks.determine_netID(pos, tlib2, outdir)
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OBS("start_storage_calc", pos)
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if netID then
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Power[netID] = nil
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end
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end
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-------------------------------------------------------------------------------
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-- Transformer
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-------------------------------------------------------------------------------
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-- Charge transfer in both directions between network 1 and network 2
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-- 'netw1' and 'netw2' are tubelib2 network instances.
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-- Function returns a table with result values for:
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-- {curr_load1, curr_load2, max_capa1, max_capa2, moved}
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function networks.power.transfer_duplex(pos, netw1, outdir1, netw2, outdir2, amount)
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local netID1 = networks.determine_netID(pos, netw1, outdir1)
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local netID2 = networks.determine_netID(pos, netw2, outdir2)
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if netID1 and netID2 then
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local pwr1 = Power[netID1] or get_power_data(pos, netw1, outdir1, netID1)
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local pwr2 = Power[netID2] or get_power_data(pos, netw2, outdir2, netID2)
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local lvl = pwr1.curr_load / pwr1.max_capa - pwr2.curr_load / pwr2.max_capa
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local moved
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pwr2.available = pwr2.available + amount
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pwr1.available = pwr1.available + amount
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if lvl > 0 then
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-- transfer from netw1 to netw2
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moved = math.min(amount, lvl * math.min(pwr1.max_capa, pwr2.max_capa))
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moved = math.max(moved, 0)
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pwr1.curr_load = pwr1.curr_load - moved
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pwr2.curr_load = pwr2.curr_load + moved
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pwr1.consumed = (pwr1.consumed or 0) + moved
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pwr2.provided = (pwr2.provided or 0) + moved
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elseif lvl < 0 then
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-- transfer from netw2 to netw1
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moved = math.min(amount, lvl * math.min(pwr1.max_capa, pwr2.max_capa))
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moved = math.max(moved, 0)
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pwr2.curr_load = pwr2.curr_load - moved
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pwr1.curr_load = pwr1.curr_load + moved
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pwr2.consumed = (pwr2.consumed or 0) + moved
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pwr1.provided = (pwr1.provided or 0) + moved
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else
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moved = 0
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end
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OBS("transfer_duplex", pos, pwr1, pwr2)
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return {
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curr_load1 = pwr1.curr_load,
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curr_load2 = pwr2.curr_load,
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max_capa1 = pwr1.max_capa,
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max_capa2 = pwr2.max_capa,
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moved = moved}
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end
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end
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-- Charge transfer in one direction from network 1 to network 2
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-- 'netw1' and 'netw2' are tubelib2 network instances.
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-- Function returns a table with result values for:
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-- {curr_load1, curr_load2, max_capa1, max_capa2, moved}
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function networks.power.transfer_simplex(pos, netw1, outdir1, netw2, outdir2, amount)
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local netID1 = networks.determine_netID(pos, netw1, outdir1)
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local netID2 = networks.determine_netID(pos, netw2, outdir2)
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if netID1 and netID2 then
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local pwr1 = Power[netID1] or get_power_data(pos, netw1, outdir1, netID1)
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local pwr2 = Power[netID2] or get_power_data(pos, netw2, outdir2, netID2)
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local lvl = pwr1.curr_load / pwr1.max_capa - pwr2.curr_load / pwr2.max_capa
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local moved
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pwr2.available = pwr2.available + amount
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if lvl > 0 then
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-- transfer from netw1 to netw2
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moved = math.min(amount, lvl * math.min(pwr1.max_capa, pwr2.max_capa))
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moved = math.max(moved, 0)
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pwr1.curr_load = pwr1.curr_load - moved
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pwr2.curr_load = pwr2.curr_load + moved
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pwr1.consumed = (pwr1.consumed or 0) + moved
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pwr2.provided = (pwr2.provided or 0) + moved
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else
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moved = 0
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end
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OBS("transfer_simplex", pos, pwr1, pwr2)
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return {
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curr_load1 = pwr1.curr_load,
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curr_load2 = pwr2.curr_load,
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max_capa1 = pwr1.max_capa,
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max_capa2 = pwr2.max_capa,
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moved = moved}
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end
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end
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-------------------------------------------------------------------------------
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-- Switch
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-------------------------------------------------------------------------------
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function networks.power.turn_switch_on(pos, tlib2, name_off, name_on)
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local node = N(pos)
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local meta = M(pos)
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local changed = false
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if node.name == name_off then
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node.name = name_on
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changed = true
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elseif meta:get_string("netw_name") == name_off then
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meta:set_string("netw_name", name_on)
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else
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return false
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end
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if meta:contains("netw_param2") then
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meta:set_int("netw_param2", meta:get_int("netw_param2_copy"))
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else
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node.param2 = meta:get_int("netw_param2_copy")
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end
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meta:set_int("netw_param2_copy", 0)
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if changed then
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minetest.swap_node(pos, node)
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end
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tlib2:after_place_tube(pos)
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return true
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end
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function networks.power.turn_switch_off(pos, tlib2, name_off, name_on)
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local node = N(pos)
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local meta = M(pos)
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local changed = false
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if node.name == name_on then
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node.name = name_off
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changed = true
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elseif meta:get_string("netw_name") == name_on then
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meta:set_string("netw_name", name_off)
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else
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return false
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end
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if meta:contains("netw_param2") then
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meta:set_int("netw_param2_copy", meta:get_int("netw_param2"))
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--meta:set_int("netw_param2", 0)
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else
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meta:set_int("netw_param2_copy", node.param2)
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end
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if changed then
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minetest.swap_node(pos, node)
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end
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if meta:contains("netw_param2") then
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node.param2 = meta:get_int("netw_param2")
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end
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tlib2:after_dig_tube(pos, node)
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return true
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end
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-------------------------------------------------------------------------------
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-- Statistics
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-------------------------------------------------------------------------------
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function networks.power.get_network_data(pos, tlib2, outdir)
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for _,outdir in ipairs(networks.get_outdirs(pos, tlib2, outdir)) do
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local netID = networks.determine_netID(pos, tlib2, outdir)
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if netID then
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local pwr = Power[netID] or get_power_data(pos, tlib2, outdir, netID)
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local consumed, provided, available
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if pwr.available > 0 and pwr.max_perf > 0 then
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local fac = pwr.max_perf / pwr.available
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available = pwr.max_perf
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provided = pwr.provided * fac
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consumed = pwr.consumed * fac
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else
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available = pwr.max_perf
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provided = 0
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consumed = pwr.consumed
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end
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local res = {
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curr_load = pwr.curr_load, -- network storage value
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max_capa = pwr.max_capa, -- network storage capacity
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consumed = consumed, -- consumed power by consumers
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provided = provided, -- provided power by generators
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available = available, -- max. available generator power
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netw_num = networks.netw_num(netID), -- network number
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}
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pwr.consumed = 0
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pwr.provided = 0
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pwr.available = 0
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return res
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end
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end
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return DEFAULT_DATA
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end
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