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Diffstat (limited to 'technic/technic/machines/switching_station.lua')
| -rw-r--r-- | technic/technic/machines/switching_station.lua | 404 |
1 files changed, 404 insertions, 0 deletions
diff --git a/technic/technic/machines/switching_station.lua b/technic/technic/machines/switching_station.lua new file mode 100644 index 0000000..d6f23a3 --- /dev/null +++ b/technic/technic/machines/switching_station.lua @@ -0,0 +1,404 @@ +-- SWITCHING STATION +-- The switching station is the center of all power distribution on an electric network. +-- +-- The station collects power from sources (PR), distributes it to sinks (RE), +-- and uses the excess/shortfall to charge and discharge batteries (BA). +-- +-- For now, all supply and demand values are expressed in kW. +-- +-- It works like this: +-- All PR,BA,RE nodes are indexed and tagged with the switching station. +-- The tagging is to allow more stations to be built without allowing a cheat +-- with duplicating power. +-- All the RE nodes are queried for their current EU demand. Those which are off +-- would require no or a small standby EU demand, while those which are on would +-- require more. +-- If the total demand is less than the available power they are all updated with the +-- demand number. +-- If any surplus exists from the PR nodes the batteries will be charged evenly with this. +-- If the total demand requires draw on the batteries they will be discharged evenly. +-- +-- If the total demand is more than the available power all RE nodes will be shut down. +-- We have a brown-out situation. +-- +-- Hence all the power distribution logic resides in this single node. +-- +-- Nodes connected to the network will have one or more of these parameters as meta data: +-- <LV|MV|HV>_EU_supply : Exists for PR and BA node types. This is the EU value supplied by the node. Output +-- <LV|MV|HV>_EU_demand : Exists for RE and BA node types. This is the EU value the node requires to run. Output +-- <LV|MV|HV>_EU_input : Exists for RE and BA node types. This is the actual EU value the network can give the node. Input +-- +-- The reason the LV|MV|HV type is prepended toe meta data is because some machine could require several supplies to work. +-- This way the supplies are separated per network. + +technic.networks = {} + +local S = technic.getter + +minetest.register_craft({ + output = "technic:switching_station", + recipe = { + {"", "technic:lv_transformer", ""}, + {"default:copper_ingot", "technic:machine_casing", "default:copper_ingot"}, + {"technic:lv_cable0", "technic:lv_cable0", "technic:lv_cable0"} + } +}) + +minetest.register_node("technic:switching_station",{ + description = S("Switching Station"), + tiles = {"technic_water_mill_top_active.png", "technic_water_mill_top_active.png", + "technic_water_mill_top_active.png", "technic_water_mill_top_active.png", + "technic_water_mill_top_active.png", "technic_water_mill_top_active.png"}, + groups = {snappy=2, choppy=2, oddly_breakable_by_hand=2}, + sounds = default.node_sound_wood_defaults(), + drawtype = "nodebox", + paramtype = "light", + 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_string("infotext", S("Switching Station")) + meta:set_string("active", 1) + end, +}) + +-------------------------------------------------- +-- Functions to traverse the electrical network +-------------------------------------------------- + +-- Add a wire node to the LV/MV/HV network +local add_new_cable_node = function(nodes, pos) + -- Ignore if the node has already been added + for i = 1, #nodes do + if pos.x == nodes[i].x and + pos.y == nodes[i].y and + pos.z == nodes[i].z then + return false + end + end + table.insert(nodes, {x=pos.x, y=pos.y, z=pos.z, visited=1}) + return true +end + +-- Generic function to add found connected nodes to the right classification array +local check_node_subp = function(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes, pos, machines, tier, sw_pos, from_below) + technic.get_or_load_node(pos) + local meta = minetest.get_meta(pos) + local name = minetest.get_node(pos).name + + if technic.is_tier_cable(name, tier) then + add_new_cable_node(all_nodes, pos) + elseif machines[name] then + --dprint(name.." is a "..machines[name]) + if machines[name] == technic.producer then + add_new_cable_node(PR_nodes, pos) + elseif machines[name] == technic.receiver then + add_new_cable_node(RE_nodes, pos) + elseif machines[name] == technic.producer_receiver then + add_new_cable_node(PR_nodes, pos) + add_new_cable_node(RE_nodes, pos) + elseif machines[name] == "SPECIAL" and + (pos.x ~= sw_pos.x or pos.y ~= sw_pos.y or pos.z ~= sw_pos.z) and + from_below then + -- Another switching station -> disable it + add_new_cable_node(SP_nodes, pos) + meta:set_int("active", 0) + meta:set_string("active_pos", minetest.serialize(sw_pos)) + elseif machines[name] == technic.battery then + add_new_cable_node(BA_nodes, pos) + end + + meta:set_int(tier.."_EU_timeout", 2) -- Touch node + end +end + +-- Traverse a network given a list of machines and a cable type name +local traverse_network = function(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes, i, machines, tier, sw_pos) + local pos = all_nodes[i] + local positions = { + {x=pos.x+1, y=pos.y, z=pos.z}, + {x=pos.x-1, y=pos.y, z=pos.z}, + {x=pos.x, y=pos.y+1, z=pos.z}, + {x=pos.x, y=pos.y-1, z=pos.z}, + {x=pos.x, y=pos.y, z=pos.z+1}, + {x=pos.x, y=pos.y, z=pos.z-1}} + --print("ON") + for i, cur_pos in pairs(positions) do + check_node_subp(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes, cur_pos, machines, tier, sw_pos, i == 3) + end +end + +local touch_nodes = function(list, tier) + for _, pos in ipairs(list) do + local meta = minetest.get_meta(pos) + meta:set_int(tier.."_EU_timeout", 2) -- Touch node + end +end + +local get_network = function(sw_pos, pos1, tier) + local cached = technic.networks[minetest.hash_node_position(pos1)] + if cached and cached.tier == tier then + touch_nodes(cached.PR_nodes, tier) + touch_nodes(cached.BA_nodes, tier) + touch_nodes(cached.RE_nodes, tier) + for _, pos in ipairs(cached.SP_nodes) do + local meta = minetest.get_meta(pos) + meta:set_int("active", 0) + meta:set_string("active_pos", minetest.serialize(sw_pos)) + end + return cached.PR_nodes, cached.BA_nodes, cached.RE_nodes + end + local i = 1 + local PR_nodes = {} + local BA_nodes = {} + local RE_nodes = {} + local SP_nodes = {} + local all_nodes = {pos1} + repeat + traverse_network(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes, + i, technic.machines[tier], tier, sw_pos) + i = i + 1 + until all_nodes[i] == nil + technic.networks[minetest.hash_node_position(pos1)] = {tier = tier, PR_nodes = PR_nodes, + RE_nodes = RE_nodes, BA_nodes = BA_nodes, SP_nodes = SP_nodes} + return PR_nodes, BA_nodes, RE_nodes +end + +----------------------------------------------- +-- The action code for the switching station -- +----------------------------------------------- +minetest.register_abm({ + nodenames = {"technic:switching_station"}, + label = "Switching Station", -- allows the mtt profiler to profile this abm individually + interval = 1, + chance = 1, + action = function(pos, node, active_object_count, active_object_count_wider) + local meta = minetest.get_meta(pos) + local meta1 = nil + local pos1 = {} + local PR_EU = 0 -- EUs from PR nodes + local BA_PR_EU = 0 -- EUs from BA nodes (discharching) + local BA_RE_EU = 0 -- EUs to BA nodes (charging) + local RE_EU = 0 -- EUs to RE nodes + + local tier = "" + local PR_nodes + local BA_nodes + local RE_nodes + local machine_name = S("Switching Station") + + if meta:get_int("active") ~= 1 then + meta:set_int("active", 1) + local active_pos = minetest.deserialize(meta:get_string("active_pos")) + if active_pos then + local meta1 = minetest.get_meta(active_pos) + meta:set_string("infotext", S("%s (Slave)"):format(meta1:get_string("infotext"))) + end + return + end + + -- Which kind of network are we on: + pos1 = {x=pos.x, y=pos.y-1, z=pos.z} + + local name = minetest.get_node(pos1).name + local tier = technic.get_cable_tier(name) + if tier then + PR_nodes, BA_nodes, RE_nodes = get_network(pos, pos1, tier) + else + --dprint("Not connected to a network") + meta:set_string("infotext", S("%s Has No Network"):format(machine_name)) + return + end + + -- Run all the nodes + local function run_nodes(list) + for _, pos2 in ipairs(list) do + technic.get_or_load_node(pos2) + local node2 = minetest.get_node(pos2) + local nodedef + if node2 and node2.name then + nodedef = minetest.registered_nodes[node2.name] + end + if nodedef and nodedef.technic_run then + nodedef.technic_run(pos2, node2) + end + end + end + + run_nodes(PR_nodes) + run_nodes(RE_nodes) + run_nodes(BA_nodes) + + -- Strings for the meta data + local eu_demand_str = tier.."_EU_demand" + local eu_input_str = tier.."_EU_input" + local eu_supply_str = tier.."_EU_supply" + + -- Distribute charge equally across multiple batteries. + local charge_total = 0 + local battery_count = 0 + + for n, pos1 in pairs(BA_nodes) do + meta1 = minetest.get_meta(pos1) + local charge = meta1:get_int("internal_EU_charge") + + if (meta1:get_int(eu_demand_str) ~= 0) then + charge_total = charge_total + charge + battery_count = battery_count + 1 + end + end + + local charge_distributed = math.floor(charge_total / battery_count) + + for n, pos1 in pairs(BA_nodes) do + meta1 = minetest.get_meta(pos1) + + if (meta1:get_int(eu_demand_str) ~= 0) then + meta1:set_int("internal_EU_charge", charge_distributed) + end + end + + -- Get all the power from the PR nodes + local PR_eu_supply = 0 -- Total power + for _, pos1 in pairs(PR_nodes) do + meta1 = minetest.get_meta(pos1) + PR_eu_supply = PR_eu_supply + meta1:get_int(eu_supply_str) + end + --dprint("Total PR supply:"..PR_eu_supply) + + -- Get all the demand from the RE nodes + local RE_eu_demand = 0 + for _, pos1 in pairs(RE_nodes) do + meta1 = minetest.get_meta(pos1) + RE_eu_demand = RE_eu_demand + meta1:get_int(eu_demand_str) + end + --dprint("Total RE demand:"..RE_eu_demand) + + -- Get all the power from the BA nodes + local BA_eu_supply = 0 + for _, pos1 in pairs(BA_nodes) do + meta1 = minetest.get_meta(pos1) + BA_eu_supply = BA_eu_supply + meta1:get_int(eu_supply_str) + end + --dprint("Total BA supply:"..BA_eu_supply) + + -- Get all the demand from the BA nodes + local BA_eu_demand = 0 + for _, pos1 in pairs(BA_nodes) do + meta1 = minetest.get_meta(pos1) + BA_eu_demand = BA_eu_demand + meta1:get_int(eu_demand_str) + end + --dprint("Total BA demand:"..BA_eu_demand) + + meta:set_string("infotext", + S("@1. Supply: @2 Demand: @3", + machine_name, technic.prettynum(PR_eu_supply), technic.prettynum(RE_eu_demand))) + + -- If the PR supply is enough for the RE demand supply them all + if PR_eu_supply >= RE_eu_demand then + --dprint("PR_eu_supply"..PR_eu_supply.." >= RE_eu_demand"..RE_eu_demand) + for _, pos1 in pairs(RE_nodes) do + meta1 = minetest.get_meta(pos1) + local eu_demand = meta1:get_int(eu_demand_str) + meta1:set_int(eu_input_str, eu_demand) + end + -- We have a surplus, so distribute the rest equally to the BA nodes + -- Let's calculate the factor of the demand + PR_eu_supply = PR_eu_supply - RE_eu_demand + local charge_factor = 0 -- Assume all batteries fully charged + if BA_eu_demand > 0 then + charge_factor = PR_eu_supply / BA_eu_demand + end + for n, pos1 in pairs(BA_nodes) do + meta1 = minetest.get_meta(pos1) + local eu_demand = meta1:get_int(eu_demand_str) + meta1:set_int(eu_input_str, math.floor(eu_demand * charge_factor)) + --dprint("Charging battery:"..math.floor(eu_demand*charge_factor)) + end + return + end + + -- If the PR supply is not enough for the RE demand we will discharge the batteries too + if PR_eu_supply + BA_eu_supply >= RE_eu_demand then + --dprint("PR_eu_supply "..PR_eu_supply.."+BA_eu_supply "..BA_eu_supply.." >= RE_eu_demand"..RE_eu_demand) + for _, pos1 in pairs(RE_nodes) do + meta1 = minetest.get_meta(pos1) + local eu_demand = meta1:get_int(eu_demand_str) + meta1:set_int(eu_input_str, eu_demand) + end + -- We have a deficit, so distribute to the BA nodes + -- Let's calculate the factor of the supply + local charge_factor = 0 -- Assume all batteries depleted + if BA_eu_supply > 0 then + charge_factor = (PR_eu_supply - RE_eu_demand) / BA_eu_supply + end + for n,pos1 in pairs(BA_nodes) do + meta1 = minetest.get_meta(pos1) + local eu_supply = meta1:get_int(eu_supply_str) + meta1:set_int(eu_input_str, math.floor(eu_supply * charge_factor)) + --dprint("Discharging battery:"..math.floor(eu_supply*charge_factor)) + end + return + end + + -- If the PR+BA supply is not enough for the RE demand: Power only the batteries + local charge_factor = 0 -- Assume all batteries fully charged + if BA_eu_demand > 0 then + charge_factor = PR_eu_supply / BA_eu_demand + end + for n, pos1 in pairs(BA_nodes) do + meta1 = minetest.get_meta(pos1) + local eu_demand = meta1:get_int(eu_demand_str) + meta1:set_int(eu_input_str, math.floor(eu_demand * charge_factor)) + end + for n, pos1 in pairs(RE_nodes) do + meta1 = minetest.get_meta(pos1) + meta1:set_int(eu_input_str, 0) + end + end, +}) + +-- Timeout ABM +-- Timeout for a node in case it was disconnected from the network +-- A node must be touched by the station continuously in order to function +local function switching_station_timeout_count(pos, tier) + local meta = minetest.get_meta(pos) + local timeout = meta:get_int(tier.."_EU_timeout") + if timeout <= 0 then + meta:set_int(tier.."_EU_input", 0) -- Not needed anymore <-- actually, it is for supply converter + return true + else + meta:set_int(tier.."_EU_timeout", timeout - 1) + return false + end +end +minetest.register_abm({ + nodenames = {"group:technic_machine"}, + interval = 1, + chance = 1, + action = function(pos, node, active_object_count, active_object_count_wider) + for tier, machines in pairs(technic.machines) do + if machines[node.name] and switching_station_timeout_count(pos, tier) then + local nodedef = minetest.registered_nodes[node.name] + if nodedef and nodedef.technic_disabled_machine_name then + node.name = nodedef.technic_disabled_machine_name + minetest.swap_node(pos, node) + elseif nodedef and nodedef.technic_on_disable then + nodedef.technic_on_disable(pos, node) + end + if nodedef then + local meta = minetest.get_meta(pos) + meta:set_string("infotext", S("%s Has No Network"):format(nodedef.description)) + end + end + end + end, +}) + +for tier, machines in pairs(technic.machines) do + -- SPECIAL will not be traversed + technic.register_machine(tier, "technic:switching_station", "SPECIAL") +end + |