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vgstation13/code/ATMOSPHERICS/components/unary/heat_exchanger.dm

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/obj/machinery/atmospherics/unary/heat_exchanger
icon = 'heat_exchanger.dmi'
icon_state = "intact"
density = 1
name = "Heat Exchanger"
desc = "Exchanges heat between two input gases. Setup for fast heat transfer"
var/obj/machinery/atmospherics/unary/heat_exchanger/partner = null
var/update_cycle
update_icon()
if(node)
icon_state = "intact"
else
icon_state = "exposed"
return
initialize()
if(!partner)
var/partner_connect = turn(dir,180)
for(var/obj/machinery/atmospherics/unary/heat_exchanger/target in get_step(src,partner_connect))
if(target.dir & get_dir(src,target))
partner = target
partner.partner = src
break
..()
process()
..()
if(!partner)
return 0
if(!air_master || air_master.current_cycle <= update_cycle)
return 0
update_cycle = air_master.current_cycle
partner.update_cycle = air_master.current_cycle
var/air_heat_capacity = air_contents.heat_capacity()
var/other_air_heat_capacity = partner.air_contents.heat_capacity()
var/combined_heat_capacity = other_air_heat_capacity + air_heat_capacity
var/old_temperature = air_contents.temperature
var/other_old_temperature = partner.air_contents.temperature
if(combined_heat_capacity > 0)
var/combined_energy = partner.air_contents.temperature*other_air_heat_capacity + air_heat_capacity*air_contents.temperature
var/new_temperature = combined_energy/combined_heat_capacity
air_contents.temperature = new_temperature
partner.air_contents.temperature = new_temperature
if(network)
if(abs(old_temperature-air_contents.temperature) > 1)
network.update = 1
if(partner.network)
if(abs(other_old_temperature-partner.air_contents.temperature) > 1)
partner.network.update = 1
return 1