55 lines
1.7 KiB
C#
55 lines
1.7 KiB
C#
using System;
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using System.Reflection;
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using System.Collections.Generic;
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namespace Encompass
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{
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public abstract class EntityRenderer : Renderer, IEntityTracker
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{
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private readonly List<Type> componentTypes = new List<Type>();
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private EntityTracker entityTracker = new EntityTracker();
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public IEnumerable<Type> ComponentTypes { get { return componentTypes; } }
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public Type DrawComponentType { get; }
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public abstract void Render(Entity entity);
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public EntityRenderer()
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{
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var rendersAttribute = GetType().GetCustomAttribute<Renders>(false);
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if (rendersAttribute != null)
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{
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componentTypes = rendersAttribute.componentTypes;
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DrawComponentType = rendersAttribute.drawComponentType;
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}
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}
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bool IEntityTracker.CheckAndTrackEntity(Guid entityID)
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{
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var entity = GetEntity(entityID);
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var shouldTrack = CheckEntity(entity);
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if (shouldTrack) { entityTracker.TrackEntity(entityID); }
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return shouldTrack;
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}
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bool IEntityTracker.CheckAndUntrackEntity(Guid entityID)
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{
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var entity = GetEntity(entityID);
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var shouldUntrack = !CheckEntity(entity);
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if (shouldUntrack) { entityTracker.UntrackEntity(entityID); }
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return shouldUntrack;
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}
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public bool IsTracking(Guid entityID)
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{
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return entityTracker.IsTracking(entityID);
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}
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private bool CheckEntity(Entity entity)
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{
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return EntityChecker.CheckEntity(entity, componentTypes) &&
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entity.HasComponent(DrawComponentType);
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}
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}
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}
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