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https://github.com/cybergirlvannie/OpenSS13.git
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hobnob13
184 lines
3.9 KiB
Plaintext
184 lines
3.9 KiB
Plaintext
/*
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* Valve - on/off valve machine, prevents gas flow through a pipe when off
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*
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* Valves work by having two internal gas reservoirs, and flowing between them only when open.
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*/
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obj/machinery/valve
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name = "valve"
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icon = 'pipes.dmi'
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icon_state = "valve0"
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desc = "A gas valve."
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anchored = 1
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capmult = 2
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var
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obj/substance/gas/gas1 = null // gas reservoir connected to node1
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obj/substance/gas/ngas1 = null
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obj/substance/gas/gas2 = null // gas reservoir connected to node2
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obj/substance/gas/ngas2 = null
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capacity = 6000000.0
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obj/machinery/node1 = null // pipe/machine connected to gas1
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obj/machinery/node2 = null // pipe/machine connected to gas2
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obj/machinery/vnode1 = null // pipeline of node1
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obj/machinery/vnode2 = null // pipeline of node2
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id = "v1" // Not implemented: planned id to control valves remotely
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open = 0 // true if the valve is open
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// Create a valve, create gas reservoirs.
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// p_dir calculated from icon direction
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New()
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..()
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gas1 = new/obj/substance/gas(src)
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ngas1 = new/obj/substance/gas()
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gas2 = new/obj/substance/gas(src)
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ngas2 = new/obj/substance/gas()
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gasflowlist += src
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switch(dir)
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if(1, 2)
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p_dir = 3
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if(4,8)
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p_dir = 12
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icon_state = "valve[open]"
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// Examine verb
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examine()
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set src in oview(1)
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if(usr.stat)
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return
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usr.client_mob() << "[desc] It is [ open? "open" : "closed"]."
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// Find the connected nodes
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buildnodes()
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var/turf/T = src.loc
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node1 = get_machine(level, T, dir )
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node2 = get_machine(level, T , turn(dir, 180) )
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vnode1 = node1 ? node1.getline() : null
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vnode2 = node2 ? node2.getline() : null
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return
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// Update the gas values with the newly calculated values
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gas_flow()
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gas1.replace_by(ngas1)
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gas2.replace_by(ngas2)
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// Perform flow into and out of the valve, and if open, between the two reservoirs
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process()
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var/delta_gt
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if(vnode1)
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delta_gt = FLOWFRAC * ( vnode1.get_gas_val(src) - gas1.tot_gas() / capmult)
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calc_delta( src, gas1, ngas1, vnode1, delta_gt)
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else
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leak_to_turf(1)
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if(vnode2)
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delta_gt = FLOWFRAC * ( vnode2.get_gas_val(src) - gas2.tot_gas() / capmult)
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calc_delta( src, gas2, ngas2, vnode2, delta_gt)
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else
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leak_to_turf(2)
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if(open) // valve operating, so transfer btwen resv1 & 2
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delta_gt = FLOWFRAC * (gas1.tot_gas() / capmult - gas2.tot_gas() / capmult)
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var/obj/substance/gas/ndelta = new()
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if(delta_gt < 0) // then flowing from R2 to R1
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ndelta.set_frac(gas2, -delta_gt)
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ngas2.sub_delta(ndelta)
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ngas1.add_delta(ndelta)
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else // flowing from R1 to R2
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ndelta.set_frac(gas1, delta_gt)
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ngas2.add_delta(ndelta)
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ngas1.sub_delta(ndelta)
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// Return the gas fullness value. Two reservoirs, so which value returned depends on who's asking
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get_gas_val(from)
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if(from == vnode2)
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return gas2.tot_gas()/capmult
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else
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return gas1.tot_gas()/capmult
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// Return the corresponding gas resevoir connected to the given node
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get_gas(from)
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if(from == vnode2)
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return gas2
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return gas1
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// Leak gas to turf if either node is null
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proc/leak_to_turf(var/port)
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var/turf/T
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switch(port)
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if(1)
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T = get_step(src, dir)
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if(2)
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T = get_step(src, turn(dir, 180) )
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if(T.density)
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T = src.loc
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if(T.density)
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return
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if(port==1)
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flow_to_turf(gas1, ngas1, T)
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else
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flow_to_turf(gas2, ngas2, T)
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// Monkey interact same as human
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attack_paw(mob/user)
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attack_hand(user)
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// Interact, toggle open/closed state, show correct animation, set correct final icon state
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attack_hand(mob/user)
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..()
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add_fingerprint(user)
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// if(stat & NOPOWER) return
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// use_power(5)
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if(!open) // now opening
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flick("valve01", src)
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icon_state = "valve1"
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sleep(10)
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else // now closing
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flick("valve10", src)
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icon_state = "valve0"
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sleep(10)
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open = !open |