89 lines
2.4 KiB
C#
89 lines
2.4 KiB
C#
using System;
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using System.Collections.Generic;
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namespace MoonTools.ECS
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{
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public abstract class System : EntityComponentReader
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{
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internal MessageDepot MessageDepot => World.MessageDepot;
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public System(World world) : base(world) { }
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public abstract void Update(TimeSpan delta);
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protected Entity CreateEntity()
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{
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return EntityStorage.Create();
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}
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protected void Set<TComponent>(in Entity entity, in TComponent component) where TComponent : unmanaged
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{
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#if DEBUG
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// check for use after destroy
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if (!Exists(entity))
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{
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throw new ArgumentException("This entity is not valid!");
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}
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#endif
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ComponentDepot.Set<TComponent>(entity.ID, component);
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}
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protected void Remove<TComponent>(in Entity entity) where TComponent : unmanaged
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{
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ComponentDepot.Remove<TComponent>(entity.ID);
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}
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protected ReadOnlySpan<TMessage> ReadMessages<TMessage>() where TMessage : unmanaged
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{
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return MessageDepot.All<TMessage>();
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}
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protected TMessage ReadMessage<TMessage>() where TMessage : unmanaged
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{
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return MessageDepot.First<TMessage>();
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}
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protected bool SomeMessage<TMessage>() where TMessage : unmanaged
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{
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return MessageDepot.Some<TMessage>();
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}
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protected IEnumerable<TMessage> ReadMessagesWithEntity<TMessage>(in Entity entity) where TMessage : unmanaged, IHasEntity
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{
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return MessageDepot.WithEntity<TMessage>(entity.ID);
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}
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protected ref readonly TMessage ReadMessageWithEntity<TMessage>(in Entity entity) where TMessage : unmanaged, IHasEntity
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{
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return ref MessageDepot.FirstWithEntity<TMessage>(entity.ID);
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}
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protected bool SomeMessageWithEntity<TMessage>(in Entity entity) where TMessage : unmanaged, IHasEntity
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{
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return MessageDepot.SomeWithEntity<TMessage>(entity.ID);
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}
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protected void Send<TMessage>(in TMessage message) where TMessage : unmanaged
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{
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MessageDepot.Add(message);
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}
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protected void Relate<TRelationKind>(in Entity entityA, in Entity entityB, TRelationKind relationData) where TRelationKind : unmanaged
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{
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RelationDepot.Set<TRelationKind>(new Relation(entityA, entityB), relationData);
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}
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protected void Unrelate<TRelationKind>(in Entity entityA, in Entity entityB) where TRelationKind : unmanaged
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{
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RelationDepot.Remove<TRelationKind>(new Relation(entityA, entityB));
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}
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protected void Destroy(in Entity entity)
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{
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ComponentDepot.OnEntityDestroy(entity.ID);
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RelationDepot.OnEntityDestroy(entity.ID);
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EntityStorage.Destroy(entity);
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}
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}
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}
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