33 lines
966 B
C#
33 lines
966 B
C#
using System.Reflection;
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namespace Encompass
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{
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/// <summary>
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/// A Spawner is a special type of Engine that runs a Spawn method in response to each Message it receives.
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/// Spawners are useful for organizing the building of new Entities in your game.
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/// </summary>
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public abstract class Spawner<TMessage> : Engine where TMessage : struct, IMessage
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{
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protected Spawner() : base()
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{
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var readsAttribute = GetType().GetCustomAttribute<Reads>(false);
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if (readsAttribute != null)
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{
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readsAttribute.ReadTypes.Add(typeof(TMessage));
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}
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ReceiveTypes.Add(typeof(TMessage));
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}
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public override void Update(double dt)
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{
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foreach (ref readonly var message in ReadMessages<TMessage>())
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{
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Spawn(message);
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}
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}
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protected abstract void Spawn(in TMessage message);
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}
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}
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