diff --git a/code/game/mecha/mecha.dm b/code/game/mecha/mecha.dm
index 65b23540ed0..e00cebaade5 100644
--- a/code/game/mecha/mecha.dm
+++ b/code/game/mecha/mecha.dm
@@ -41,10 +41,13 @@
//inner atmos machinery. Air tank mostly
var/use_internal_tank = 0
+ var/internal_tank_valve = 0 // If the valve is set to one atm (0) or 40 (1)
+ var/internal_tank_wire = null
var/obj/item/device/radio/radio = null
var/obj/machinery/atmospherics/portables_connector/connected_port = null //filling the air tanks
var/obj/machinery/portable_atmospherics/canister/internal_tank
+ var/obj/machinery/portable_atmospherics/canister/cabin
var/max_temperature = 2500
var/internal_damage_threshold = 50 //health percentage below which internal damage is possible
@@ -78,6 +81,9 @@
if(!add_airtank())
removeVerb(/obj/mecha/verb/connect_to_port)
removeVerb(/obj/mecha/verb/toggle_internal_tank)
+ if(!add_cabin())
+ world << "Something went wrong! Are you sure you read the blueprints right?"
+ world << "Please report this to a coder."
src.spark_system.set_up(2, 0, src)
src.spark_system.attach(src)
cell = new(src)
@@ -115,6 +121,14 @@
internal_tank = new /obj/machinery/portable_atmospherics/canister/air(src)
return internal_tank
+/obj/mecha/proc/add_cabin()
+ cabin = new /obj/machinery/portable_atmospherics/canister/
+ var/startingpressure = 1/20
+ cabin.air_contents.oxygen = (O2STANDARD*startingpressure)*cabin.air_contents.volume/(R_IDEAL_GAS_EQUATION*cabin.air_contents.temperature)
+ cabin.air_contents.nitrogen = (N2STANDARD*startingpressure)*cabin.air_contents.volume/(R_IDEAL_GAS_EQUATION*cabin.air_contents.temperature)
+
+ return cabin
+
/obj/mecha/proc/do_after(delay as num)
sleep(delay)
if(src)
@@ -727,18 +741,58 @@
return T.remove_air(amount)
return
-/obj/mecha/return_air()
+/obj/mecha/return_air(var/airtank)
if(use_internal_tank && internal_tank)
+ var/datum/gas_mixture/environmenttank
+ var/datum/gas_mixture/environmentcabin
+ environmenttank = internal_tank.air_contents
+ environmentcabin = cabin.air_contents
+ var/release_pressure = null
+
+ if(internal_tank_valve)
+ release_pressure = INFINITY
+ else
+ release_pressure = ONE_ATMOSPHERE
+
+ var/cabin_pressure = environmentcabin.return_pressure()
+ var/pressure_delta = min(release_pressure - cabin_pressure, (environmenttank.return_pressure() - environmentcabin.return_pressure())/2)
+ //Can not have a pressure delta that would cause environment pressure > tank pressure
+
+ var/transfer_moles = 0
+ if((environmenttank.temperature > 0) && (pressure_delta > 0))
+ transfer_moles = pressure_delta*environmentcabin.volume/(environmentcabin.temperature * R_IDEAL_GAS_EQUATION)
+
+ //Actually transfer the gas
+ var/datum/gas_mixture/removed = environmenttank.remove(transfer_moles)
+ environmentcabin.merge(removed)
+
+ if(airtank)
+ . = internal_tank.return_air()
+ else
+ . = cabin.return_air()
+ else if(airtank)
. = internal_tank.return_air()
+
+ else if (cabin.return_pressure() > WARNING_HIGH_PRESSURE)
+
+ cabin.air_contents.remove(min(75,cabin.return_pressure()))
+ . = cabin.return_air()
else
. = get_turf_air()
return
-/obj/mecha/proc/return_pressure()
+/obj/mecha/proc/return_pressure(var/airtank)
. = 0
- var/datum/gas_mixture/gm = return_air()
+
+ var/datum/gas_mixture/gm = null
+ if(airtank)
+ gm = return_air(1)
+ else
+ gm = return_air()
+
if(gm)
. = gm.return_pressure()
+
return
/obj/mecha/proc/return_temperature()
@@ -1010,6 +1064,25 @@
else
return
if(mob_container.forceMove(src.loc))//ejecting mob container
+ if(ishuman(occupant) && (return_pressure() > HAZARD_HIGH_PRESSURE))
+ use_internal_tank = 0
+ var/datum/gas_mixture/environment = get_turf_air()
+ if(environment)
+ var/env_pressure = environment.return_pressure()
+ var/pressure_delta = (cabin.return_pressure() - env_pressure)
+ //Can not have a pressure delta that would cause environment pressure > tank pressure
+
+ var/transfer_moles = 0
+ if(pressure_delta > 0)
+ transfer_moles = pressure_delta*environment.volume/(cabin.return_temperature() * R_IDEAL_GAS_EQUATION)
+
+ //Actually transfer the gas
+ var/datum/gas_mixture/removed = cabin.air_contents.remove(transfer_moles)
+ loc.assume_air(removed)
+
+ occupant.SetStunned(5)
+ occupant.SetWeakened(5)
+ occupant << "You were blown out of the mech!"
src.log_message("[mob_container] moved out.")
occupant.reset_view()
/*
@@ -1143,7 +1216,8 @@
Integrity: [integrity]%
Powercell charge: [isnull(cell_charge)?"No powercell installed":"[cell.percent()]%"]
Air source: [use_internal_tank?"Internal Airtank":"Environment"]
- Airtank pressure: [src.return_pressure()]kPa
+ Airtank pressure: [return_pressure(1)]kPa
+ Cabin pressure: [src.return_pressure()]kPa
Internal temperature: [src.return_temperature()]°K|[src.return_temperature() - T0C]°C
Lights: [lights?"on":"off"]
[src.dna?"DNA-locked:
[src.dna] \[Reset\]
":null]
@@ -1259,6 +1333,7 @@
[add_req_access?"Edit operation keycodes":null]
[maint_access?"Initiate maintenance protocol":null]
+ [(state >= 1) ?"Toggle Internal Air Pressure Safety":null]