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Aurora.3/code/modules/power/generator.dm
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Batrachophreno 4ecb0bc21c Repath obj/machinery to obj/structure/machinery [MDB Ignore] (#22500) 
Repaths obj/machinery to obj/structure/machinery. **Note for
reviewers:** the only meaningful changed code exists within
**code/game/objects/structures.dm** and
**code/game/objects/structures/_machinery.dm**, largely concerning
damage procs. With the exception of moving airlock defines to their own
file, ALL OTHER CHANGES ARE STRICTLY PATH CHANGES.

Objects, _categorically_, are largely divided between those you can hold
in your hand/inventory and those you can't. Machinery objects are
already subtypes of Structures behaviorally, this PR just makes their
pathing reflect that, and allows for future work (tool actions, more
health/destruction functionality) to be developed without unnecessary
code duplication.

I have tested this PR by loading up the Horizon and dismantling various
machines and structures with tools, shooting guns of various types
throughout the ship, and detonating a bunch of explosions throughout the
ship.
2026-05-26 19:35:48 +00:00

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/obj/structure/machinery/power/generator
name = "\improper Stirling engine"
desc = "It's a high efficiency Stirling engine. This model produces electricity from the temperature and differential between two gas loops."
icon_state = "teg-unassembled"
density = TRUE
anchored = FALSE
obj_flags = OBJ_FLAG_ROTATABLE
use_power = POWER_USE_OFF
idle_power_usage = 1000
var/max_power = 2500000
var/thermal_efficiency = 0.65
var/obj/structure/machinery/atmospherics/binary/circulator/circ1
var/obj/structure/machinery/atmospherics/binary/circulator/circ2
var/last_circ1_gen = 0
var/last_circ2_gen = 0
var/last_thermal_gen = 0
var/stored_energy = 0
var/lastgen1 = 0
var/lastgen2 = 0
var/effective_gen = 0
var/lastgenlev = 0
var/datum/effect_system/sparks/spark_system
/obj/structure/machinery/power/generator/Initialize()
. = ..()
desc = initial(desc) + " Rated for [round(max_power/1000)] kW."
var/dirs
if (dir == NORTH || dir == SOUTH)
dirs = list(EAST,WEST)
else
dirs = list(NORTH,SOUTH)
spark_system = bind_spark(src, 3, dirs)
reconnect()
/obj/structure/machinery/power/generator/Destroy()
QDEL_NULL(spark_system)
circ1 = null
circ2 = null
return ..()
/**
* Circulators connect in dir and reverse_dir(dir) directions
* A mnemonic to determine circulator/generator directions: the cirulators orbit clockwise around the generator.
* So a circulator to the NORTH of the generator connects first to the EAST, then to the WEST,
* and a circulator to the WEST of the generator connects first to the NORTH, then to the SOUTH.
* Note that the circulator's outlet dir is it's always facing dir, and it's inlet is always the reverse
*/
/obj/structure/machinery/power/generator/proc/reconnect()
if(circ1)
circ1.temperature_overlay = null
if(circ2)
circ2.temperature_overlay = null
circ1 = null
circ2 = null
if(src.loc && anchored)
if(src.dir & (EAST|WEST))
circ1 = locate(/obj/structure/machinery/atmospherics/binary/circulator) in get_step(src,WEST)
circ2 = locate(/obj/structure/machinery/atmospherics/binary/circulator) in get_step(src,EAST)
if(circ1 && circ2)
if(circ1.dir != NORTH || circ2.dir != SOUTH)
circ1 = null
circ2 = null
else if(src.dir & (NORTH|SOUTH))
circ1 = locate(/obj/structure/machinery/atmospherics/binary/circulator) in get_step(src,NORTH)
circ2 = locate(/obj/structure/machinery/atmospherics/binary/circulator) in get_step(src,SOUTH)
if(circ1 && circ2 && (circ1.dir != EAST || circ2.dir != WEST))
circ1 = null
circ2 = null
update_icon()
/obj/structure/machinery/power/generator/update_icon()
icon_state = anchored ? "teg-assembled" : "teg-unassembled"
ClearOverlays()
if(circ1)
circ1.temperature_overlay = null
if(circ2)
circ2.temperature_overlay = null
if(stat & (NOPOWER|BROKEN))
return TRUE
else
if (lastgenlev != 0)
AddOverlays("teg-op[lastgenlev]")
if (circ1 && circ2)
var/extreme = (lastgenlev > 9) ? "ex" : ""
if (circ1.last_temperature < circ2.last_temperature)
circ1.temperature_overlay = "circ-[extreme]cold"
circ1.is_hot_loop = FALSE
circ2.temperature_overlay = "circ-[extreme]hot"
circ2.is_hot_loop = TRUE
else
circ1.temperature_overlay = "circ-[extreme]hot"
circ1.is_hot_loop = TRUE
circ2.temperature_overlay = "circ-[extreme]cold"
circ2.is_hot_loop = FALSE
return TRUE
/obj/structure/machinery/power/generator/process()
if(!circ1 || !circ2 || !anchored || stat & (BROKEN|NOPOWER))
stored_energy = 0
return
var/datum/gas_mixture/air1 = circ1.return_transfer_air()
var/datum/gas_mixture/air2 = circ2.return_transfer_air()
lastgen2 = lastgen1
lastgen1 = 0
last_thermal_gen = 0
last_circ1_gen = 0
last_circ2_gen = 0
if(air1 && air2)
var/air1_heat_capacity = air1.heat_capacity()
var/air2_heat_capacity = air2.heat_capacity()
var/delta_temperature = abs(air2.temperature - air1.temperature)
if(delta_temperature > 0 && air1_heat_capacity > 0 && air2_heat_capacity > 0)
var/energy_transfer = delta_temperature*air2_heat_capacity*air1_heat_capacity/(air2_heat_capacity+air1_heat_capacity)
var/heat = energy_transfer*(1-thermal_efficiency)
last_thermal_gen = energy_transfer*thermal_efficiency
if(air2.temperature > air1.temperature)
air2.temperature = air2.temperature - energy_transfer/air2_heat_capacity
air1.temperature = air1.temperature + heat/air1_heat_capacity
else
air2.temperature = air2.temperature + heat/air2_heat_capacity
air1.temperature = air1.temperature - energy_transfer/air1_heat_capacity
playsound(get_turf(src), 'sound/effects/beam.ogg', 25, FALSE, 10, , required_preferences = ASFX_AMBIENCE, channel = CHANNEL_AMBIENCE)
//Transfer the air
if (air1)
circ1.air2.merge(air1)
if (air2)
circ2.air2.merge(air2)
//Update the gas networks
if(circ1.network2)
circ1.network2.update = 1
if(circ2.network2)
circ2.network2.update = 1
//Exceeding maximum power leads to some power loss
if(effective_gen > max_power && prob(5))
spark_system.queue()
stored_energy *= 0.67
//Power
last_circ1_gen = circ1.return_stored_energy()
last_circ2_gen = circ2.return_stored_energy()
stored_energy += last_thermal_gen + last_circ1_gen + last_circ2_gen
lastgen1 = stored_energy*0.4 //smoothened power generation to prevent slingshotting as pressure is equalized, then restored by pumps
stored_energy -= lastgen1
effective_gen = (lastgen1 + lastgen2) / 2
// update icon overlays and power usage only when necessary
var/genlev = max(0, min( round(11*effective_gen / max_power), 11))
if(effective_gen > 100 && genlev == 0)
genlev = 1
if(genlev != lastgenlev)
lastgenlev = genlev
update_icon()
ADD_TO_POWERNET(src, effective_gen)
/obj/structure/machinery/power/generator/attack_ai(mob/user)
if(!ai_can_interact(user))
return
attack_hand(user)
/obj/structure/machinery/power/generator/attackby(obj/item/attacking_item, mob/user)
if(attacking_item.tool_behaviour == TOOL_WRENCH)
attacking_item.play_tool_sound(get_turf(src), 75)
anchored = !anchored
balloon_alert(user, "[anchored ? "secure" : "unsecure"]")
user.visible_message("[user.name] [anchored ? "secures" : "unsecures"] the bolts holding [src.name] to the floor.", \
"You [anchored ? "secure" : "unsecure"] the bolts holding [src] to the floor.", \
"You hear a ratchet")
update_use_power(anchored ? POWER_USE_IDLE : POWER_USE_OFF)
if(anchored) // Powernet connection stuff.
connect_to_network()
else
disconnect_from_network()
reconnect()
else
..()
/obj/structure/machinery/power/generator/attack_hand(mob/user)
add_fingerprint(user)
if(stat & (BROKEN|NOPOWER) || !anchored) return
if(!circ1 || !circ2) //Just incase the middle part of the TEG was not wrenched last.
reconnect()
ui_interact(user)
/obj/structure/machinery/power/generator/ui_interact(mob/user, datum/tgui/ui)
ui = SStgui.try_update_ui(user, src, ui)
if(!ui)
// Interface ID should match your tgui route registration/name.
ui = new(user, src, "StirlingEngine", "Stirling Engine")
ui.open()
/obj/structure/machinery/power/generator/ui_data(mob/user)
var/list/data = list()
var/vertical = FALSE
if(dir == NORTH || dir == SOUTH)
vertical = TRUE
data["totalOutput"] = effective_gen / 1000
data["maxTotalOutput"] = max_power / 1000
data["thermalOutput"] = last_thermal_gen / 1000
data["circConnected"] = FALSE
if(circ1)
// The one on the left (or top)
data["primaryDir"] = vertical ? "top" : "left"
data["primaryOutput"] = last_circ1_gen/1000
data["primaryFlowCapacity"] = circ1.volume_capacity_used*100
data["primaryInletPressure"] = XGM_PRESSURE(circ1.air1)
data["primaryInletTemperature"] = circ1.air1.temperature
data["primaryOutletPressure"] = XGM_PRESSURE(circ1.air2)
data["primaryOutletTemperature"] = circ1.air2.temperature
data["primaryIsHot"] = circ1.is_hot_loop
if(circ2)
// The one on the right (or bottom)
data["secondaryDir"] = vertical ? "bottom" : "right"
data["secondaryOutput"] = last_circ2_gen/1000
data["secondaryFlowCapacity"] = circ2.volume_capacity_used*100
data["secondaryInletPressure"] = XGM_PRESSURE(circ2.air1)
data["secondaryInletTemperature"] = circ2.air1.temperature
data["secondaryOutletPressure"] = XGM_PRESSURE(circ2.air2)
data["secondaryOutletTemperature"] = circ2.air2.temperature
data["secondaryIsHot"] = circ2.is_hot_loop
data["circConnected"] = (circ1 && circ2) ? TRUE : FALSE
return data
/obj/structure/machinery/power/generator/power_change()
..()
update_icon()
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