obj/machinery/atmospherics/trinary/mixer
icon = 'icons/obj/atmospherics/mixer.dmi'
icon_state = "intact_off"
name = "Gas mixer"
mirror = /obj/machinery/atmospherics/trinary/mixer/mirrored
var/on = 0
var/target_pressure = ONE_ATMOSPHERE
var/node1_concentration = 0.5
var/node2_concentration = 0.5
//node 3 is the outlet, nodes 1 & 2 are intakes
obj/machinery/atmospherics/trinary/mixer/update_icon()
if(stat & NOPOWER)
icon_state = "intact_off"
else if(node2 && node3 && node1)
icon_state = "intact_[on?("on"):("off")]"
else
icon_state = "intact_off"
on = 0
..()
obj/machinery/atmospherics/trinary/mixer/power_change()
var/old_stat = stat
..()
if(old_stat != stat)
update_icon()
obj/machinery/atmospherics/trinary/mixer/New()
..()
air3.volume = 300
obj/machinery/atmospherics/trinary/mixer/process()
. = ..()
if(!on)
return
var/output_starting_pressure = air3.return_pressure()
if(output_starting_pressure >= target_pressure)
//No need to mix if target is already full!
return
//Calculate necessary moles to transfer using PV=nRT
var/pressure_delta = target_pressure - output_starting_pressure
var/transfer_moles1 = 0
var/transfer_moles2 = 0
if(air1.temperature > 0)
transfer_moles1 = (node1_concentration*pressure_delta)*air3.volume/(air1.temperature * R_IDEAL_GAS_EQUATION)
if(air2.temperature > 0)
transfer_moles2 = (node2_concentration*pressure_delta)*air3.volume/(air2.temperature * R_IDEAL_GAS_EQUATION)
var/air1_moles = air1.total_moles()
var/air2_moles = air2.total_moles()
if((air1_moles < transfer_moles1) || (air2_moles < transfer_moles2))
if(!transfer_moles1 || !transfer_moles2) return
var/ratio = min(air1_moles/transfer_moles1, air2_moles/transfer_moles2)
transfer_moles1 *= ratio
transfer_moles2 *= ratio
//Actually transfer the gas
if(transfer_moles1 > 0)
var/datum/gas_mixture/removed1 = air1.remove(transfer_moles1)
air3.merge(removed1)
if(transfer_moles2 > 0)
var/datum/gas_mixture/removed2 = air2.remove(transfer_moles2)
air3.merge(removed2)
if(network1 && transfer_moles1)
network1.update = 1
if(network2 && transfer_moles2)
network2.update = 1
if(network3)
network3.update = 1
return 1
obj/machinery/atmospherics/trinary/mixer/attack_hand(user as mob)
if(..())
return
src.add_fingerprint(usr)
if(!src.allowed(user))
user << "Access denied."
return
usr.set_machine(src)
var/dat = {"Power: [on?"On":"Off"]
Desirable output pressure:
[target_pressure]kPa | Change
Node 1 Concentration:
-
-
[node1_concentration]([node1_concentration*100]%)
+
+
Node 2 Concentration:
-
-
[node2_concentration]([node2_concentration*100]%)
+
+
"}
user << browse("[src.name] control[dat]", "window=atmo_mixer")
onclose(user, "atmo_mixer")
return
obj/machinery/atmospherics/trinary/mixer/Topic(href,href_list)
if(..()) return
if(href_list["power"])
on = !on
if(href_list["set_press"])
var/new_pressure = input(usr,"Enter new output pressure (0-4500kPa)","Pressure control",src.target_pressure) as num
src.target_pressure = max(0, min(4500, new_pressure))
if(href_list["node1_c"])
var/value = text2num(href_list["node1_c"])
src.node1_concentration = max(0, min(1, src.node1_concentration + value))
src.node2_concentration = max(0, min(1, src.node2_concentration - value))
if(href_list["node2_c"])
var/value = text2num(href_list["node2_c"])
src.node2_concentration = max(0, min(1, src.node2_concentration + value))
src.node1_concentration = max(0, min(1, src.node1_concentration - value))
src.update_icon()
src.updateUsrDialog()
return
/obj/machinery/atmospherics/trinary/mixer/mirrored
icon_state = "intactm_off"
pipe_flags = IS_MIRROR
/obj/machinery/atmospherics/trinary/mixer/mirrored/update_icon()
..()
if(stat & NOPOWER)
icon_state = "intactm_off"
else if(node2 && node3 && node1)
icon_state = "intactm_[on?("on"):("off")]"
else
icon_state = "intactm_off"
on = 0
return