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Audible siren to warn of reactor meltdown
The siren sounds a "danger" tone continuously while it is active and damaged, such that meltdown is imminent. It sounds a one-off "clear" tone if it has been sounding "danger" and the danger has passed, either because the structure is repaired or because the reactor has become idle.
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@ -54,6 +54,49 @@ local nodebox = {
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{ -0.303, -0.303, -0.397, 0.303, 0.303, 0.397 },
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}
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local reactor_siren = {}
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local function siren_set_state(pos, newstate)
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local hpos = minetest.hash_node_position(pos)
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local siren = reactor_siren[hpos]
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if not siren then
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if newstate == "off" then return end
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siren = {state="off"}
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reactor_siren[hpos] = siren
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end
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if newstate == "danger" and siren.state ~= "danger" then
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if siren.handle then minetest.sound_stop(siren.handle) end
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siren.handle = minetest.sound_play("technic_hv_nuclear_reactor_siren_danger_loop", {pos=pos, gain=1.5, loop=true, max_hear_distance=48})
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siren.state = "danger"
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elseif newstate == "clear" then
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if siren.handle then minetest.sound_stop(siren.handle) end
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local clear_handle = minetest.sound_play("technic_hv_nuclear_reactor_siren_clear", {pos=pos, gain=1.5, loop=false, max_hear_distance=48})
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siren.handle = clear_handle
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siren.state = "clear"
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minetest.after(10, function ()
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if siren.handle == clear_handle then
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minetest.sound_stop(clear_handle)
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if reactor_siren[hpos] == siren then
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reactor_siren[hpos] = nil
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end
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end
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end)
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elseif newstate == "off" and siren.state ~= "off" then
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if siren.handle then minetest.sound_stop(siren.handle) end
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siren.handle = nil
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reactor_siren[hpos] = nil
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end
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end
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local function siren_danger(pos, meta)
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meta:set_int("siren", 1)
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siren_set_state(pos, "danger")
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end
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local function siren_clear(pos, meta)
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if meta:get_int("siren") ~= 0 then
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siren_set_state(pos, "clear")
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meta:set_int("siren", 0)
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end
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end
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local reactor_structure_badness = function(pos)
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-- The reactor consists of a 9x9x9 cube structure
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-- A cross section through the middle:
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@ -142,8 +185,10 @@ minetest.register_abm({
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if badness == 0 then
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if accum_badness ~= 0 then
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meta:set_int("structure_accumulated_badness", accum_badness - 1)
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siren_clear(pos, meta)
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end
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else
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siren_danger(pos, meta)
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accum_badness = accum_badness + badness
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if accum_badness >= 100 then
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meltdown_reactor(pos)
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@ -190,6 +235,7 @@ local run = function(pos, node)
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meta:set_string("infotext", S("%s Idle"):format(machine_name))
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technic.swap_node(pos, "technic:hv_nuclear_reactor_core")
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meta:set_int("structure_accumulated_badness", 0)
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siren_clear(pos, meta)
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elseif burn_time > 0 then
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burn_time = burn_time + 1
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meta:set_int("burn_time", burn_time)
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@ -227,6 +273,7 @@ minetest.register_node("technic:hv_nuclear_reactor_core", {
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inv:set_size("src", 6)
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end,
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can_dig = technic.machine_can_dig,
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on_destruct = function(pos) siren_set_state(pos, "off") end,
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allow_metadata_inventory_put = technic.machine_inventory_put,
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allow_metadata_inventory_take = technic.machine_inventory_take,
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allow_metadata_inventory_move = technic.machine_inventory_move,
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@ -250,6 +297,7 @@ minetest.register_node("technic:hv_nuclear_reactor_core_active", {
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},
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can_dig = technic.machine_can_dig,
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after_dig_node = meltdown_reactor,
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on_destruct = function(pos) siren_set_state(pos, "off") end,
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allow_metadata_inventory_put = technic.machine_inventory_put,
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allow_metadata_inventory_take = technic.machine_inventory_take,
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allow_metadata_inventory_move = technic.machine_inventory_move,
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@ -271,6 +319,7 @@ minetest.register_node("technic:hv_nuclear_reactor_core_active", {
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meta:set_int("burn_time", 0)
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technic.swap_node(pos, "technic:hv_nuclear_reactor_core")
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meta:set_int("structure_accumulated_badness", 0)
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siren_clear(pos, meta)
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return
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end
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BIN
technic/sounds/technic_hv_nuclear_reactor_siren_clear.ogg
Normal file
BIN
technic/sounds/technic_hv_nuclear_reactor_siren_clear.ogg
Normal file
Binary file not shown.
BIN
technic/sounds/technic_hv_nuclear_reactor_siren_danger_loop.ogg
Normal file
BIN
technic/sounds/technic_hv_nuclear_reactor_siren_danger_loop.ogg
Normal file
Binary file not shown.
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