612 lines
22 KiB
C#
612 lines
22 KiB
C#
#nullable enable
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using Content.Server.Atmos.Reactions;
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using Content.Server.GameObjects.EntitySystems;
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using Content.Server.Interfaces;
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using Content.Shared.Atmos;
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using Robust.Shared.GameObjects.Systems;
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using Robust.Shared.Interfaces.Serialization;
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using Robust.Shared.IoC;
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using Robust.Shared.Prototypes;
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using Robust.Shared.Serialization;
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using Robust.Shared.ViewVariables;
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namespace Content.Server.Atmos
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{
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/// <summary>
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/// A general-purpose, variable volume gas mixture.
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/// </summary>
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[Serializable]
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public class GasMixture : IExposeData, IEquatable<GasMixture>, ICloneable
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{
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private readonly AtmosphereSystem _atmosphereSystem;
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[ViewVariables]
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private float[] _moles = new float[Atmospherics.TotalNumberOfGases];
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[ViewVariables]
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private float[] _molesArchived = new float[Atmospherics.TotalNumberOfGases];
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[ViewVariables]
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private float _temperature = Atmospherics.TCMB;
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public IReadOnlyList<float> Gases => _moles;
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[ViewVariables]
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public bool Immutable { get; private set; }
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[ViewVariables]
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public float LastShare { get; private set; } = 0;
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[ViewVariables]
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public readonly Dictionary<GasReaction, float> ReactionResults = new Dictionary<GasReaction, float>()
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{
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// We initialize the dictionary here.
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{ GasReaction.Fire, 0f }
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};
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[ViewVariables]
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public float HeatCapacity
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get
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{
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var capacity = 0f;
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for (var i = 0; i < Atmospherics.TotalNumberOfGases; i++)
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{
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capacity += _atmosphereSystem.GetGas(i).SpecificHeat * _moles[i];
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}
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return MathF.Max(capacity, Atmospherics.MinimumHeatCapacity);
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}
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}
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[ViewVariables]
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public float HeatCapacityArchived
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get
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{
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var capacity = 0f;
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for (var i = 0; i < Atmospherics.TotalNumberOfGases; i++)
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{
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capacity += _atmosphereSystem.GetGas(i).SpecificHeat * _molesArchived[i];
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}
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return MathF.Max(capacity, Atmospherics.MinimumHeatCapacity);
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}
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}
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[ViewVariables]
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public float TotalMoles
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get
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{
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var moles = 0f;
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foreach (var gas in _moles)
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{
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moles += gas;
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}
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return moles;
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}
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}
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[ViewVariables]
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public float Pressure
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{
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get
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{
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if (Volume <= 0) return 0f;
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return TotalMoles * Atmospherics.R * Temperature / Volume;
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}
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}
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[ViewVariables]
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public float Temperature
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{
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get => _temperature;
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set
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{
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if (Immutable) return;
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_temperature = MathF.Max(value, Atmospherics.TCMB);
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}
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}
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[ViewVariables]
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public float ThermalEnergy => Temperature * HeatCapacity;
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[ViewVariables]
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public float TemperatureArchived { get; private set; }
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[ViewVariables]
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public float Volume { get; set; }
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public GasMixture() : this(null)
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{
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}
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public GasMixture(AtmosphereSystem? atmosphereSystem)
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{
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_atmosphereSystem = atmosphereSystem ?? EntitySystem.Get<AtmosphereSystem>();
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}
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public GasMixture(float volume, AtmosphereSystem? atmosphereSystem = null)
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{
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if (volume < 0)
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volume = 0;
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Volume = volume;
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_atmosphereSystem = atmosphereSystem ?? EntitySystem.Get<AtmosphereSystem>();
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void MarkImmutable()
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{
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Immutable = true;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void Archive()
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{
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_moles.AsSpan().CopyTo(_molesArchived.AsSpan());
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TemperatureArchived = Temperature;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void Merge(GasMixture giver)
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{
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if (Immutable || giver == null) return;
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if (MathF.Abs(Temperature - giver.Temperature) > Atmospherics.MinimumTemperatureDeltaToConsider)
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{
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var combinedHeatCapacity = HeatCapacity + giver.HeatCapacity;
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if (combinedHeatCapacity > 0f)
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{
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Temperature =
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(giver.Temperature * giver.HeatCapacity + Temperature * HeatCapacity) / combinedHeatCapacity;
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}
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}
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for (var i = 0; i < Atmospherics.TotalNumberOfGases; i++)
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{
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_moles[i] += giver._moles[i];
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public float GetMoles(int gasId)
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{
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return _moles[gasId];
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public float GetMoles(Gas gas)
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{
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return GetMoles((int)gas);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void SetMoles(int gasId, float quantity)
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{
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if (!Immutable)
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_moles[gasId] = quantity;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void SetMoles(Gas gas, float quantity)
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{
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SetMoles((int)gas, quantity);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void AdjustMoles(int gasId, float quantity)
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{
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if (!Immutable)
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_moles[gasId] += quantity;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void AdjustMoles(Gas gas, float moles)
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{
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AdjustMoles((int)gas, moles);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public GasMixture Remove(float amount)
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{
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return RemoveRatio(amount / TotalMoles);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public GasMixture RemoveRatio(float ratio)
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{
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if(ratio <= 0)
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return new GasMixture(Volume, _atmosphereSystem);
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if (ratio > 1)
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ratio = 1;
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var removed = new GasMixture(_atmosphereSystem) {Volume = Volume, Temperature = Temperature};
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for (var i = 0; i < Atmospherics.TotalNumberOfGases; i++)
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{
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var moles = _moles[i];
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if (moles < Atmospherics.GasMinMoles)
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removed._moles[i] = 0f;
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else
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{
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var removedMoles = moles * ratio;
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removed._moles[i] = removedMoles;
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if (!Immutable)
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_moles[i] -= removedMoles;
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}
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}
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return removed;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void CopyFromMutable(GasMixture sample)
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{
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if (Immutable) return;
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sample._moles.CopyTo(_moles, 0);
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Temperature = sample.Temperature;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public float Share(GasMixture sharer, int atmosAdjacentTurfs)
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{
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var temperatureDelta = TemperatureArchived - sharer.TemperatureArchived;
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var absTemperatureDelta = Math.Abs(temperatureDelta);
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var oldHeatCapacity = 0f;
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var oldSharerHeatCapacity = 0f;
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if (absTemperatureDelta > Atmospherics.MinimumTemperatureDeltaToConsider)
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{
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oldHeatCapacity = HeatCapacity;
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oldSharerHeatCapacity = sharer.HeatCapacity;
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}
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var heatCapacityToSharer = 0f;
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var heatCapacitySharerToThis = 0f;
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var movedMoles = 0f;
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var absMovedMoles = 0f;
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for(var i = 0; i < Atmospherics.TotalNumberOfGases; i++)
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{
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var thisValue = _moles[i];
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var sharerValue = sharer._moles[i];
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var delta = (thisValue - sharerValue) / (atmosAdjacentTurfs + 1);
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if (!(MathF.Abs(delta) >= Atmospherics.GasMinMoles)) continue;
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if (absTemperatureDelta > Atmospherics.MinimumTemperatureDeltaToConsider)
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{
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var gasHeatCapacity = delta * _atmosphereSystem.GetGas(i).SpecificHeat;
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if (delta > 0)
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{
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heatCapacityToSharer += gasHeatCapacity;
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}
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else
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{
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heatCapacitySharerToThis -= gasHeatCapacity;
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}
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}
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if (!Immutable) _moles[i] -= delta;
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if (!sharer.Immutable) sharer._moles[i] += delta;
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movedMoles += delta;
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absMovedMoles += MathF.Abs(delta);
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}
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LastShare = absMovedMoles;
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if (absTemperatureDelta > Atmospherics.MinimumTemperatureDeltaToConsider)
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{
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var newHeatCapacity = oldHeatCapacity + heatCapacitySharerToThis - heatCapacityToSharer;
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var newSharerHeatCapacity = oldSharerHeatCapacity + heatCapacityToSharer - heatCapacitySharerToThis;
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// Transfer of thermal energy (via changed heat capacity) between self and sharer.
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if (!Immutable && newHeatCapacity > Atmospherics.MinimumHeatCapacity)
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{
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Temperature = ((oldHeatCapacity * Temperature) - (heatCapacityToSharer * TemperatureArchived) + (heatCapacitySharerToThis * sharer.TemperatureArchived)) / newHeatCapacity;
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}
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if (!sharer.Immutable && newSharerHeatCapacity > Atmospherics.MinimumHeatCapacity)
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{
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sharer.Temperature = ((oldSharerHeatCapacity * sharer.Temperature) - (heatCapacitySharerToThis * sharer.TemperatureArchived) + (heatCapacityToSharer*TemperatureArchived)) / newSharerHeatCapacity;
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}
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// Thermal energy of the system (self and sharer) is unchanged.
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if (MathF.Abs(oldSharerHeatCapacity) > Atmospherics.MinimumHeatCapacity)
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{
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if (MathF.Abs(newSharerHeatCapacity / oldSharerHeatCapacity - 1) < 0.1)
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{
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TemperatureShare(sharer, Atmospherics.OpenHeatTransferCoefficient);
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}
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}
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}
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if (!(temperatureDelta > Atmospherics.MinimumTemperatureToMove) &&
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!(MathF.Abs(movedMoles) > Atmospherics.MinimumMolesDeltaToMove)) return 0f;
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var moles = TotalMoles;
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var theirMoles = sharer.TotalMoles;
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return (TemperatureArchived * (moles + movedMoles)) - (sharer.TemperatureArchived * (theirMoles - movedMoles)) * Atmospherics.R / Volume;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public float TemperatureShare(GasMixture sharer, float conductionCoefficient)
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{
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var temperatureDelta = TemperatureArchived - sharer.TemperatureArchived;
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if (MathF.Abs(temperatureDelta) > Atmospherics.MinimumTemperatureDeltaToConsider)
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{
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var heatCapacity = HeatCapacityArchived;
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var sharerHeatCapacity = sharer.HeatCapacityArchived;
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if (sharerHeatCapacity > Atmospherics.MinimumHeatCapacity && heatCapacity > Atmospherics.MinimumHeatCapacity)
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{
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var heat = conductionCoefficient * temperatureDelta * (heatCapacity * sharerHeatCapacity / (heatCapacity + sharerHeatCapacity));
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if (!Immutable)
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Temperature = MathF.Abs(MathF.Max(Temperature - heat / heatCapacity, Atmospherics.TCMB));
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if (!sharer.Immutable)
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sharer.Temperature = MathF.Abs(MathF.Max(sharer.Temperature + heat / sharerHeatCapacity, Atmospherics.TCMB));
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}
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}
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return sharer.Temperature;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public float TemperatureShare(float conductionCoefficient, float sharerTemperature, float sharerHeatCapacity)
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{
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var temperatureDelta = TemperatureArchived - sharerTemperature;
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if (MathF.Abs(temperatureDelta) > Atmospherics.MinimumTemperatureDeltaToConsider)
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{
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var heatCapacity = HeatCapacityArchived;
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if (sharerHeatCapacity > Atmospherics.MinimumHeatCapacity && heatCapacity > Atmospherics.MinimumHeatCapacity)
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{
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var heat = conductionCoefficient * temperatureDelta * (heatCapacity * sharerHeatCapacity / (heatCapacity + sharerHeatCapacity));
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if (!Immutable)
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Temperature = MathF.Abs(MathF.Max(Temperature - heat / heatCapacity, Atmospherics.TCMB));
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sharerTemperature = MathF.Abs(MathF.Max(sharerTemperature + heat / sharerHeatCapacity, Atmospherics.TCMB));
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}
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}
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return sharerTemperature;
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}
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public enum GasCompareResult
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{
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NoExchange = -2,
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TemperatureExchange = -1,
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}
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/// <summary>
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/// Compares sample to self to see if within acceptable ranges that group processing may be enabled.
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/// </summary>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public GasCompareResult Compare(GasMixture sample)
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{
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var moles = 0f;
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for(var i = 0; i < Atmospherics.TotalNumberOfGases; i++)
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{
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var gasMoles = _moles[i];
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var delta = MathF.Abs(gasMoles - sample._moles[i]);
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if (delta > Atmospherics.MinimumMolesDeltaToMove && (delta > gasMoles * Atmospherics.MinimumAirRatioToMove))
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return (GasCompareResult)i; // We can move gases!
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moles += gasMoles;
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}
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if (moles > Atmospherics.MinimumMolesDeltaToMove)
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{
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var tempDelta = MathF.Abs(Temperature - sample.Temperature);
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if (tempDelta > Atmospherics.MinimumTemperatureDeltaToSuspend)
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return GasCompareResult.TemperatureExchange; // There can be temperature exchange.
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}
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// No exchange at all!
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return GasCompareResult.NoExchange;
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}
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/// <summary>
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/// Pump gas from this mixture to the output mixture.
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/// Amount depends on target pressure.
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/// </summary>
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/// <param name="outputAir">The mixture to pump the gas to</param>
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/// <param name="targetPressure">The target pressure to reach</param>
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/// <returns>Whether we could pump air to the output or not</returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public bool PumpGasTo(GasMixture outputAir, float targetPressure)
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{
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var outputStartingPressure = outputAir.Pressure;
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var pressureDelta = targetPressure - outputStartingPressure;
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if (pressureDelta < 0.01)
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// No need to pump gas, we've reached the target.
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return false;
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if (!(TotalMoles > 0) || !(Temperature > 0)) return false;
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// We calculate the necessary moles to transfer with the ideal gas law.
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var transferMoles = pressureDelta * outputAir.Volume / (Temperature * Atmospherics.R);
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// And now we transfer the gas.
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var removed = Remove(transferMoles);
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outputAir.Merge(removed);
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return true;
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}
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/// <summary>
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/// Releases gas from this mixture to the output mixture.
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/// It can't transfer air to a mixture with higher pressure.
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/// </summary>
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/// <param name="outputAir"></param>
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/// <param name="targetPressure"></param>
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/// <returns></returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public bool ReleaseGasTo(GasMixture outputAir, float targetPressure)
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{
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var outputStartingPressure = outputAir.Pressure;
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var inputStartingPressure = Pressure;
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if (outputStartingPressure >= MathF.Min(targetPressure, inputStartingPressure - 10))
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// No need to pump gas if the target is already reached or input pressure is too low.
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// Need at least 10 kPa difference to overcome friction in the mechanism.
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return false;
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if (!(TotalMoles > 0) || !(Temperature > 0)) return false;
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// We calculate the necessary moles to transfer with the ideal gas law.
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var pressureDelta = MathF.Min(targetPressure - outputStartingPressure, (inputStartingPressure - outputStartingPressure) / 2f);
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var transferMoles = pressureDelta * outputAir.Volume / (Temperature * Atmospherics.R);
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// And now we transfer the gas.
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var removed = Remove(transferMoles);
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outputAir.Merge(removed);
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return true;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public ReactionResult React(IGasMixtureHolder holder)
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{
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var reaction = ReactionResult.NoReaction;
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var temperature = Temperature;
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var energy = ThermalEnergy;
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foreach (var prototype in _atmosphereSystem.GasReactions)
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{
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if (energy < prototype.MinimumEnergyRequirement ||
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temperature < prototype.MinimumTemperatureRequirement)
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continue;
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var doReaction = true;
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for (var i = 0; i < prototype.MinimumRequirements.Length; i++)
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{
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if(i > Atmospherics.TotalNumberOfGases)
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throw new IndexOutOfRangeException("Reaction Gas Minimum Requirements Array Prototype exceeds total number of gases!");
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var req = prototype.MinimumRequirements[i];
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if (!(GetMoles(i) < req)) continue;
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doReaction = false;
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break;
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}
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if (!doReaction)
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continue;
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reaction = prototype.React(this, holder, _atmosphereSystem.EventBus);
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if(reaction.HasFlag(ReactionResult.StopReactions))
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break;
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}
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return reaction;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void Clear()
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{
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if (Immutable) return;
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Array.Clear(_moles, 0, Atmospherics.TotalNumberOfGases);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void Multiply(float multiplier)
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{
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if (Immutable) return;
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for(var i = 0; i < Atmospherics.TotalNumberOfGases; i++)
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{
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_moles[i] *= multiplier;
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}
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}
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public void ExposeData(ObjectSerializer serializer)
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{
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serializer.DataField(this, x => Immutable, "immutable", false);
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serializer.DataField(this, x => Volume, "volume", 0f);
|
|
serializer.DataField(this, x => LastShare, "lastShare", 0f);
|
|
serializer.DataField(this, x => TemperatureArchived, "temperatureArchived", 0f);
|
|
serializer.DataField(ref _moles, "moles", new float[Atmospherics.TotalNumberOfGases]);
|
|
serializer.DataField(ref _molesArchived, "molesArchived", new float[Atmospherics.TotalNumberOfGases]);
|
|
serializer.DataField(ref _temperature, "temperature", Atmospherics.TCMB);
|
|
|
|
// The arrays MUST have a specific length.
|
|
Array.Resize(ref _moles, Atmospherics.TotalNumberOfGases);
|
|
Array.Resize(ref _molesArchived, Atmospherics.TotalNumberOfGases);
|
|
}
|
|
|
|
public override bool Equals(object? obj)
|
|
{
|
|
if (obj is GasMixture mix)
|
|
return Equals(mix);
|
|
return false;
|
|
}
|
|
|
|
public bool Equals(GasMixture? other)
|
|
{
|
|
if (ReferenceEquals(null, other)) return false;
|
|
if (ReferenceEquals(this, other)) return true;
|
|
return _moles.SequenceEqual(other._moles)
|
|
&& _molesArchived.SequenceEqual(other._molesArchived)
|
|
&& _temperature.Equals(other._temperature)
|
|
&& ReactionResults.SequenceEqual(other.ReactionResults)
|
|
&& Immutable == other.Immutable
|
|
&& LastShare.Equals(other.LastShare)
|
|
&& TemperatureArchived.Equals(other.TemperatureArchived)
|
|
&& Volume.Equals(other.Volume);
|
|
}
|
|
|
|
public override int GetHashCode()
|
|
{
|
|
var hashCode = new HashCode();
|
|
|
|
for (var i = 0; i < Atmospherics.TotalNumberOfGases; i++)
|
|
{
|
|
var moles = _moles[i];
|
|
var molesArchived = _molesArchived[i];
|
|
hashCode.Add(moles);
|
|
hashCode.Add(molesArchived);
|
|
}
|
|
|
|
hashCode.Add(_temperature);
|
|
hashCode.Add(TemperatureArchived);
|
|
hashCode.Add(Immutable);
|
|
hashCode.Add(LastShare);
|
|
hashCode.Add(Volume);
|
|
|
|
return hashCode.ToHashCode();
|
|
}
|
|
|
|
public object Clone()
|
|
{
|
|
var newMixture = new GasMixture(_atmosphereSystem)
|
|
{
|
|
_moles = (float[])_moles.Clone(),
|
|
_molesArchived = (float[])_molesArchived.Clone(),
|
|
_temperature = _temperature,
|
|
Immutable = Immutable,
|
|
LastShare = LastShare,
|
|
TemperatureArchived = TemperatureArchived,
|
|
Volume = Volume,
|
|
};
|
|
return newMixture;
|
|
}
|
|
}
|
|
}
|