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-- Dig and place services
mesecon.on_placenode = function(pos, node)
mesecon.execute_autoconnect_hooks_now(pos, node)
-- Receptors: Send on signal when active
if mesecon.is_receptor_on(node.name) then
mesecon.receptor_on(pos, mesecon.receptor_get_rules(node))
end
-- Conductors: Send turnon signal when powered or replace by respective offstate conductor
-- if placed conductor is an onstate one
if mesecon.is_conductor(node.name) then
local sources = mesecon.is_powered(pos)
if sources then
-- also call receptor_on if itself is powered already, so that neighboring
-- conductors will be activated (when pushing an on-conductor with a piston)
for _, s in ipairs(sources) do
local rule = vector.subtract(pos, s)
mesecon.turnon(pos, rule)
end
--mesecon.receptor_on (pos, mesecon.conductor_get_rules(node))
elseif mesecon.is_conductor_on(node) then
minetest.swap_node(pos, {name = mesecon.get_conductor_off(node)})
end
end
-- Effectors: Send changesignal and activate or deactivate
if mesecon.is_effector(node.name) then
local powered_rules = {}
local unpowered_rules = {}
-- for each input rule, check if powered
for _, r in ipairs(mesecon.effector_get_rules(node)) do
local powered = mesecon.is_powered(pos, r)
if powered then table.insert(powered_rules, r)
else table.insert(unpowered_rules, r) end
local state = powered and mesecon.state.on or mesecon.state.off
mesecon.changesignal(pos, node, r, state, 1)
end
if (#powered_rules > 0) then
for _, r in ipairs(powered_rules) do
mesecon.activate(pos, node, r, 1)
end
else
for _, r in ipairs(unpowered_rules) do
mesecon.deactivate(pos, node, r, 1)
end
end
end
end
mesecon.on_dignode = function(pos, node)
if mesecon.is_conductor_on(node) then
mesecon.receptor_off(pos, mesecon.conductor_get_rules(node))
elseif mesecon.is_receptor_on(node.name) then
mesecon.receptor_off(pos, mesecon.receptor_get_rules(node))
end
mesecon.execute_autoconnect_hooks_queue(pos, node)
end
minetest.register_on_placenode(mesecon.on_placenode)
minetest.register_on_dignode(mesecon.on_dignode)
-- Overheating service for fast circuits
local OVERHEAT_MAX = mesecon.setting("overheat_max", 20)
local COOLDOWN_TIME = mesecon.setting("cooldown_time", 2.0)
local COOLDOWN_STEP = mesecon.setting("cooldown_granularity", 0.5)
local COOLDOWN_MULTIPLIER = OVERHEAT_MAX / COOLDOWN_TIME
local cooldown_timer = 0.0
local object_heat = {}
-- returns true if heat is too high
function mesecon.do_overheat(pos)
local id = minetest.hash_node_position(pos)
local heat = (object_heat[id] or 0) + 1
object_heat[id] = heat
if heat >= OVERHEAT_MAX then
minetest.log("action", "Node overheats at " .. minetest.pos_to_string(pos))
object_heat[id] = nil
return true
end
return false
end
function mesecon.do_cooldown(pos)
local id = minetest.hash_node_position(pos)
object_heat[id] = nil
end
function mesecon.get_heat(pos)
local id = minetest.hash_node_position(pos)
return object_heat[id] or 0
end
function mesecon.move_hot_nodes(moved_nodes)
local new_heat = {}
for _, n in ipairs(moved_nodes) do
local old_id = minetest.hash_node_position(n.oldpos)
local new_id = minetest.hash_node_position(n.pos)
new_heat[new_id] = object_heat[old_id]
object_heat[old_id] = nil
end
for id, heat in pairs(new_heat) do
object_heat[id] = heat
end
end
local function global_cooldown(dtime)
cooldown_timer = cooldown_timer + dtime
if cooldown_timer < COOLDOWN_STEP then
return -- don't overload the CPU
end
local cooldown = COOLDOWN_MULTIPLIER * cooldown_timer
cooldown_timer = 0
for id, heat in pairs(object_heat) do
heat = heat - cooldown
if heat <= 0 then
object_heat[id] = nil -- free some RAM
else
object_heat[id] = heat
end
end
end
minetest.register_globalstep(global_cooldown)
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