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82cbea2aef
# Description This significantly improves the quality of the language system by fixing the mistakes I've made almost a year ago while developing it. Mainly, this throws away the old half-broken way of networking in favor of the component state system provided by RT. Language speaker comp is now shared with SendOnlyToOwner = true, and its state is handled manually. In addition to that, this brings the following changes: - UniversalLanguageSpeaker and LanguageKnowledge are now server-side - DetermineLanguagesEvent and LanguagesUpdateEvent are now shared (so that future systems can be built in shared, if needed) - Everything now uses the ProtoId<LanguagePrototype> type instead of raw strings (god, I hated those so much) - The server-side language system now accepts Entity<T?> arguments instead of EntityUid + T - UniversalLanguageSpeaker is now based on DetermineEntityLanguagesEvent and gets an Enabled field, which allows to turn it off. This may have some use in the future. - Some minor cleanup <!-- TODO MEDIA <details><summary><h1>Media</h1></summary> <p>  </p> </details> --> # Changelog No cl --------- Co-authored-by: VMSolidus <evilexecutive@gmail.com>
67 lines
2.8 KiB
C#
67 lines
2.8 KiB
C#
using System.Text;
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using Content.Shared.GameTicking;
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using Robust.Shared.Prototypes;
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namespace Content.Shared.Language.Systems;
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public abstract class SharedLanguageSystem : EntitySystem
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{
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/// <summary>
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/// The language used as a fallback in cases where an entity suddenly becomes a language speaker (e.g. the usage of make-sentient)
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/// </summary>
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[ValidatePrototypeId<LanguagePrototype>]
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public static readonly string FallbackLanguagePrototype = "TauCetiBasic";
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/// <summary>
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/// The language whose speakers are assumed to understand and speak every language. Should never be added directly.
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/// </summary>
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[ValidatePrototypeId<LanguagePrototype>]
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public static readonly string UniversalPrototype = "Universal";
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/// <summary>
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/// A cached instance of <see cref="UniversalPrototype"/>
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/// </summary>
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public static LanguagePrototype Universal { get; private set; } = default!;
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[Dependency] protected readonly IPrototypeManager _prototype = default!;
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[Dependency] protected readonly SharedGameTicker _ticker = default!;
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public override void Initialize()
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{
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Universal = _prototype.Index<LanguagePrototype>("Universal");
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}
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public LanguagePrototype? GetLanguagePrototype(ProtoId<LanguagePrototype> id)
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{
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_prototype.TryIndex(id, out var proto);
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return proto;
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}
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/// <summary>
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/// Obfuscate a message using the given language.
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/// </summary>
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public string ObfuscateSpeech(string message, LanguagePrototype language)
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{
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var builder = new StringBuilder();
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language.Obfuscation.Obfuscate(builder, message, this);
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return builder.ToString();
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}
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/// <summary>
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/// Generates a stable pseudo-random number in the range (min, max) (inclusively) for the given seed.
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/// One seed always corresponds to one number, however the resulting number also depends on the current round number.
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/// This method is meant to be used in <see cref="ObfuscationMethod"/> to provide stable obfuscation.
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/// </summary>
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internal int PseudoRandomNumber(int seed, int min, int max)
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{
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// Using RobustRandom or System.Random here is a bad idea because this method can get called hundreds of times per message.
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// Each call would require us to allocate a new instance of random, which would lead to lots of unnecessary calculations.
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// Instead, we use a simple but effective algorithm derived from the C language.
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// It does not produce a truly random number, but for the purpose of obfuscating messages in an RP-based game it's more than alright.
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seed = seed ^ (_ticker.RoundId * 127);
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var random = seed * 1103515245 + 12345;
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return min + Math.Abs(random) % (max - min + 1);
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}
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}
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