76 lines
3.5 KiB
C#
76 lines
3.5 KiB
C#
using Content.Server.Atmos.EntitySystems;
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using Content.Shared.Atmos;
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using JetBrains.Annotations;
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namespace Content.Server.Atmos.Reactions
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{
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[UsedImplicitly]
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[DataDefinition]
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public sealed class PlasmaFireReaction : IGasReactionEffect
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{
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public ReactionResult React(GasMixture mixture, IGasMixtureHolder? holder, AtmosphereSystem atmosphereSystem)
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{
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var energyReleased = 0f;
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var oldHeatCapacity = atmosphereSystem.GetHeatCapacity(mixture);
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var temperature = mixture.Temperature;
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var location = holder as TileAtmosphere;
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mixture.ReactionResults[GasReaction.Fire] = 0;
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// More plasma released at higher temperatures.
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var temperatureScale = 0f;
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if (temperature > Atmospherics.PlasmaUpperTemperature)
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temperatureScale = 1f;
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else
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temperatureScale = (temperature - Atmospherics.PlasmaMinimumBurnTemperature) /
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(Atmospherics.PlasmaUpperTemperature - Atmospherics.PlasmaMinimumBurnTemperature);
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if (temperatureScale > 0)
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{
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var oxygenBurnRate = Atmospherics.OxygenBurnRateBase - temperatureScale;
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var plasmaBurnRate = 0f;
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var initialOxygenMoles = mixture.GetMoles(Gas.Oxygen);
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var initialPlasmaMoles = mixture.GetMoles(Gas.Plasma);
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// Supersaturation makes tritium.
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var supersaturation = initialOxygenMoles / initialPlasmaMoles > Atmospherics.SuperSaturationThreshold;
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if (initialOxygenMoles > initialPlasmaMoles * Atmospherics.PlasmaOxygenFullburn)
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plasmaBurnRate = initialPlasmaMoles * temperatureScale / Atmospherics.PlasmaBurnRateDelta;
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else
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plasmaBurnRate = temperatureScale * (initialOxygenMoles / Atmospherics.PlasmaOxygenFullburn) / Atmospherics.PlasmaBurnRateDelta;
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if (plasmaBurnRate > Atmospherics.MinimumHeatCapacity)
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{
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plasmaBurnRate = MathF.Min(plasmaBurnRate, MathF.Min(initialPlasmaMoles, initialOxygenMoles / oxygenBurnRate));
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mixture.SetMoles(Gas.Plasma, initialPlasmaMoles - plasmaBurnRate);
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mixture.SetMoles(Gas.Oxygen, initialOxygenMoles - plasmaBurnRate * oxygenBurnRate);
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mixture.AdjustMoles(supersaturation ? Gas.Tritium : Gas.CarbonDioxide, plasmaBurnRate);
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energyReleased += Atmospherics.FirePlasmaEnergyReleased * plasmaBurnRate;
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mixture.ReactionResults[GasReaction.Fire] += plasmaBurnRate * (1 + oxygenBurnRate);
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}
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}
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if (energyReleased > 0)
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{
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var newHeatCapacity = atmosphereSystem.GetHeatCapacity(mixture);
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if (newHeatCapacity > Atmospherics.MinimumHeatCapacity)
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mixture.Temperature = (temperature * oldHeatCapacity + energyReleased) / newHeatCapacity;
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}
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if (location != null)
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{
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var mixTemperature = mixture.Temperature;
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if (mixTemperature > Atmospherics.FireMinimumTemperatureToExist)
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{
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atmosphereSystem.HotspotExpose(location.GridIndex, location.GridIndices, mixTemperature, mixture.Volume);
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}
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}
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return mixture.ReactionResults[GasReaction.Fire] != 0 ? ReactionResult.Reacting : ReactionResult.NoReaction;
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}
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}
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}
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