/* Making Bombs with ZAS: Make burny fire with lots of burning Draw off 5000K gas from burny fire Separate gas into oxygen and plasma components Obtain plasma and oxygen tanks filled up about 50-75% with normal-temp gas Fill rest with super hot gas from separated canisters, they should be about 125C now. Attach to transfer valve and open. BOOM. */ //Some legacy definitions so fires can be started. atom/proc/temperature_expose(datum/gas_mixture/air, exposed_temperature, exposed_volume) return null turf/proc/hotspot_expose(exposed_temperature, exposed_volume, soh = 0) turf/simulated/hotspot_expose(exposed_temperature, exposed_volume, soh) if(fire_protection > world.time-300) return var/datum/gas_mixture/air_contents = return_air() if(!air_contents || exposed_temperature < PLASMA_MINIMUM_BURN_TEMPERATURE) return 0 var/igniting = 0 if(locate(/obj/fire) in src) return 1 var/datum/gas/volatile_fuel/fuel = locate() in air_contents.trace_gases var/obj/effect/decal/cleanable/liquid_fuel/liquid = locate() in src if(air_contents.calculate_firelevel(liquid) > vsc.IgnitionLevel && (fuel || liquid || air_contents.toxins > 0.5)) igniting = 1 if(air_contents.oxygen < 0.5) return 0 if(! (locate(/obj/fire) in src)) new /obj/fire(src,1000) //active_hotspot.just_spawned = (current_cycle < air_master.current_cycle) //remove just_spawned protection if no longer processing this cell return igniting obj fire //Icon for fire on turfs. anchored = 1 mouse_opacity = 0 //luminosity = 3 icon = 'fire.dmi' icon_state = "1" layer = TURF_LAYER var firelevel = 10000 //Calculated by gas_mixture.calculate_firelevel() process() . = 1 if(firelevel > vsc.IgnitionLevel) var/turf/simulated/floor/S = loc if(!S.zone) del src //Cannot exist where zones are broken. if(istype(S)) var datum/gas_mixture/air_contents = S.return_air() //Get whatever trace fuels are in the area datum/gas/volatile_fuel/fuel = locate() in air_contents.trace_gases //Also get liquid fuels on the ground. obj/effect/decal/cleanable/liquid_fuel/liquid = locate() in S var/datum/gas_mixture/flow = air_contents.remove_ratio(vsc.fire_consuption_rate) //The reason we're taking a part of the air instead of all of it is so that it doesn't jump to //the fire's max temperature instantaneously. firelevel = air_contents.calculate_firelevel(liquid) //Ensure that there is an appropriate amount of fuel and O2 here. if(firelevel > 0.25 && flow.oxygen > 0.3 && (air_contents.toxins || fuel || liquid)) for(var/direction in cardinal) if(S.air_check_directions&direction) //Grab all valid bordering tiles var/turf/simulated/enemy_tile = get_step(S, direction) if(istype(enemy_tile)) //If extinguisher mist passed over the turf it's trying to spread to, don't spread and //reduce firelevel. if(enemy_tile.fire_protection > world.time-30) firelevel -= 1.5 continue //Spread the fire. if(!(locate(/obj/fire) in enemy_tile)) if( prob( firelevel*10 ) && S.CanPass(null, enemy_tile, 0,0) && enemy_tile.CanPass(null, S, 0,0)) new/obj/fire(enemy_tile,firelevel) if(flow) //Ensure adequate oxygen and fuel. if(flow.oxygen > 0.3 && (flow.toxins || fuel || liquid)) //Change icon depending on the fuel, and thus temperature. if(firelevel > 6) icon_state = "3" SetLuminosity(7) else if(firelevel > 2.5) icon_state = "2" SetLuminosity(5) else icon_state = "1" SetLuminosity(3) //Ensure flow temperature is higher than minimum fire temperatures. flow.temperature = max(PLASMA_MINIMUM_BURN_TEMPERATURE+0.1,flow.temperature) //Burn the gas mixture. flow.zburn(liquid) if(fuel && fuel.moles <= 0.00001) air_contents.trace_gases.Remove(fuel) else del src S.assume_air(flow) //Then put it back where you found it. else del src else del src else del src for(var/mob/living/carbon/human/M in loc) M.FireBurn(firelevel) //Burn the humans! New(newLoc,fl) ..() if(!istype(loc, /turf)) del src dir = pick(cardinal) SetLuminosity(3) firelevel = fl air_master.active_hotspots.Add(src) Del() if (istype(loc, /turf/simulated)) SetLuminosity(0) loc = null air_master.active_hotspots.Remove(src) ..() turf/simulated/var/fire_protection = 0 //Protects newly extinguished tiles from being overrun again. turf/proc/apply_fire_protection() turf/simulated/apply_fire_protection() fire_protection = world.time datum/gas_mixture/proc/zburn(obj/effect/decal/cleanable/liquid_fuel/liquid) //This proc is similar to fire(), but uses a simple logarithm to calculate temp, and is thus more stable with ZAS. if(temperature > PLASMA_MINIMUM_BURN_TEMPERATURE) var total_fuel = toxins datum/gas/volatile_fuel/fuel = locate() in trace_gases if(fuel) //Volatile Fuel total_fuel += fuel.moles if(liquid) //Liquid Fuel if(liquid.amount <= 0) del liquid else total_fuel += liquid.amount*15 if(! (fuel || toxins || liquid) ) return 0 //If there's no fuel, there's no burn. Can't divide by zero anyway. if(oxygen > 0.3) //Calculate the firelevel. var/firelevel = calculate_firelevel(liquid) //Reaches a maximum practical temperature of around 4500. //Increase temperature. temperature = max( vsc.fire_temperature_multiplier*log(0.04*firelevel + 1.24) , temperature ) var/total_reactants = min(oxygen, 2*total_fuel) + total_fuel //Consume some gas. var/consumed_gas = max( min( total_reactants, vsc.fire_gas_combustion_ratio*firelevel ), 0.2) oxygen -= min(oxygen, (total_reactants-total_fuel)*consumed_gas/total_reactants ) toxins -= min(toxins, toxins*consumed_gas/total_reactants ) carbon_dioxide += max(consumed_gas, 0) if(fuel) fuel.moles -= fuel.moles*consumed_gas/total_reactants if(fuel.moles <= 0) del fuel if(liquid) liquid.amount -= liquid.amount*consumed_gas/(total_reactants) if(liquid.amount <= 0) del liquid update_values() return consumed_gas return 0 datum/gas_mixture/proc/calculate_firelevel(obj/effect/decal/cleanable/liquid_fuel/liquid) //Calculates the firelevel based on one equation instead of having to do this multiple times in different areas. var datum/gas/volatile_fuel/fuel = locate() in trace_gases var/total_fuel = toxins - 0.5 if(liquid) total_fuel += (liquid.amount*15) if(fuel) total_fuel += fuel.moles var/total_combustables = (total_fuel + oxygen) if(total_fuel <= 0 || oxygen <= 0) return 0 return max( 0, vsc.fire_firelevel_multiplier*(total_combustables/(total_combustables + nitrogen))*log(2*total_combustables/oxygen)*log(total_combustables/total_fuel)) /mob/living/carbon/human/proc/FireBurn(var/firelevel) //Burns mobs due to fire. Respects heat transfer coefficients on various body parts. //Due to TG reworking how fireprotection works, this is kinda less meaningful. var head_exposure = 1 chest_exposure = 1 groin_exposure = 1 legs_exposure = 1 arms_exposure = 1 var/mx = min(max(0.1,firelevel / 20),10) var/last_temperature = vsc.fire_temperature_multiplier*log(0.04*firelevel + 1.24) //Get heat transfer coefficients for clothing. //skytodo: kill anyone who breaks things then orders me to fix them for(var/obj/item/clothing/C in src) if(l_hand == C || r_hand == C) continue if( C.max_heat_protection_temperature >= last_temperature ) if(C.body_parts_covered & HEAD) head_exposure = 0 if(C.body_parts_covered & UPPER_TORSO) chest_exposure = 0 if(C.body_parts_covered & LOWER_TORSO) groin_exposure = 0 if(C.body_parts_covered & LEGS) legs_exposure = 0 if(C.body_parts_covered & ARMS) arms_exposure = 0 //Always check these damage procs first if fire damage isn't working. They're probably what's wrong. apply_damage(2.5*mx*head_exposure, BURN, "head", 0, 0, "Fire") apply_damage(2.5*mx*chest_exposure, BURN, "chest", 0, 0, "Fire") apply_damage(2.0*mx*groin_exposure, BURN, "groin", 0, 0, "Fire") apply_damage(0.6*mx*legs_exposure, BURN, "l_leg", 0, 0, "Fire") apply_damage(0.6*mx*legs_exposure, BURN, "r_leg", 0, 0, "Fire") apply_damage(0.4*mx*arms_exposure, BURN, "l_arm", 0, 0, "Fire") apply_damage(0.4*mx*arms_exposure, BURN, "r_arm", 0, 0, "Fire") //flash_pain() #undef ZAS_FIRE_CONSUMPTION_RATE