mirror of
https://github.com/DCFApixels/DragonECS.git
synced 2025-09-18 18:14:37 +08:00
438 lines
16 KiB
C#
438 lines
16 KiB
C#
using DCFApixels.DragonECS.Internal;
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using DCFApixels.DragonECS.Utils;
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using System;
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using System.Collections.Generic;
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using System.Runtime.CompilerServices;
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namespace DCFApixels.DragonECS
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{
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public abstract class EcsWorld
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{
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private const short GEN_BITS = 0x7fff;
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private const short DEATH_GEN_BIT = short.MinValue;
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private const int DEL_ENT_BUFFER_SIZE_OFFSET = 2;
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public static EcsWorld[] Worlds = new EcsWorld[8];
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private static IntDispenser _worldIdDispenser = new IntDispenser(0);
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public readonly short uniqueID;
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private int _worldTypeID;
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private IntDispenser _entityDispenser;
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private int _entitiesCount;
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private int _entitesCapacity;
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private short[] _gens; //старший бит указывает на то жива ли сущность
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private short[] _componentCounts;
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private EcsGroup _allEntites;
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private int[] _delEntBuffer;
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private int _delEntBufferCount;
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internal IEcsPoolImplementation[] _pools;
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private EcsNullPool _nullPool;
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private EcsSubject[] _subjects;
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private EcsQueryExecutor[] _executors;
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private List<WeakReference<EcsGroup>> _groups;
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private Stack<EcsGroup> _groupsPool = new Stack<EcsGroup>(64);
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private List<IEcsWorldEventListener> _listeners;
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private object[] _components;
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#region Properties
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public abstract Type Archetype { get; }
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public int UniqueID => uniqueID;
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public int Count => _entitiesCount;
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public int Capacity => _entitesCapacity; //_denseEntities.Length;
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public EcsReadonlyGroup Entities => _allEntites.Readonly;
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public ReadOnlySpan<IEcsPoolImplementation> AllPools => _pools;// new ReadOnlySpan<IEcsPoolImplementation>(pools, 0, _poolsCount);
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#endregion
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#region Constructors/Destroy
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static EcsWorld() => Worlds[0] = new EcsNullWorld();
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public EcsWorld() : this(true) { }
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internal EcsWorld(bool isIndexable)
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{
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_entitesCapacity = 512;
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_listeners = new List<IEcsWorldEventListener>();
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if (isIndexable)
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{
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uniqueID = (short)_worldIdDispenser.GetFree();
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if (uniqueID >= Worlds.Length)
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Array.Resize(ref Worlds, Worlds.Length << 1);
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Worlds[uniqueID] = this;
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}
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_worldTypeID = WorldMetaStorage.GetWorldID(Archetype);
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_entityDispenser = new IntDispenser(0);
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_nullPool = EcsNullPool.instance;
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_pools = new IEcsPoolImplementation[512];
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ArrayUtility.Fill(_pools, _nullPool);
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_gens = new short[_entitesCapacity];
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_componentCounts = new short[_entitesCapacity];
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ArrayUtility.Fill(_gens, DEATH_GEN_BIT);
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_delEntBufferCount = 0;
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_delEntBuffer = new int[_entitesCapacity >> DEL_ENT_BUFFER_SIZE_OFFSET];
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_groups = new List<WeakReference<EcsGroup>>();
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_allEntites = GetFreeGroup();
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_subjects = new EcsSubject[128];
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_executors = new EcsQueryExecutor[128];
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_components = new object[2];
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}
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public void Destroy()
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{
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_entityDispenser = null;
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_gens = null;
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_pools = null;
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_nullPool = null;
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_subjects = null;
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_executors = null;
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Worlds[uniqueID] = null;
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_worldIdDispenser.Release(uniqueID);
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}
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#endregion
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#region ComponentInfo
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public int GetComponentID<T>() => WorldMetaStorage.GetComponentID<T>(_worldTypeID);
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public int GetComponentID(Type type) => WorldMetaStorage.GetComponentID(type, _worldTypeID);
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public Type GetComponentType(int componentID) => WorldMetaStorage.GetComponentType(_worldTypeID, componentID);
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public bool IsComponentTypeDeclared<T>() => IsComponentTypeDeclared(typeof(T));
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public bool IsComponentTypeDeclared(Type type) => WorldMetaStorage.IsComponentTypeDeclared(_worldTypeID, type);
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#endregion
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#region Getters
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#if UNITY_2020_3_OR_NEWER
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[UnityEngine.Scripting.Preserve]
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#endif
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public TPool GetPool<TPool>() where TPool : IEcsPoolImplementation, new()
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{
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int uniqueID = WorldMetaStorage.GetPoolID<TPool>(_worldTypeID);
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if (uniqueID >= _pools.Length)
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{
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int oldCapacity = _pools.Length;
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Array.Resize(ref _pools, _pools.Length << 1);
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ArrayUtility.Fill(_pools, _nullPool, oldCapacity, oldCapacity - _pools.Length);
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}
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if (_pools[uniqueID] == _nullPool)
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{
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var pool = new TPool();
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_pools[uniqueID] = pool;
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pool.OnInit(this, uniqueID);
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}
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return (TPool)_pools[uniqueID];
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}
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public TSubject GetSubject<TSubject>() where TSubject : EcsSubject
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{
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int uniqueID = WorldMetaStorage.GetSubjectID<TSubject>(_worldTypeID);
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if (uniqueID >= _subjects.Length)
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Array.Resize(ref _subjects, _subjects.Length << 1);
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if (_subjects[uniqueID] == null)
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_subjects[uniqueID] = EcsSubject.Builder.Build<TSubject>(this);
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return (TSubject)_subjects[uniqueID];
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}
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public TExecutor GetExecutor<TExecutor>() where TExecutor : EcsQueryExecutor, new()
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{
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int index = WorldMetaStorage.GetExecutorID<TExecutor>(_worldTypeID);
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if (index >= _executors.Length)
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Array.Resize(ref _executors, _executors.Length << 1);
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if (_executors[index] == null)
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{
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var executor = new TExecutor();
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executor.Initialize(this);
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_executors[index] = executor;
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}
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return (TExecutor)_executors[index];
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}
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public T Get<T>() where T : class, new()
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{
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int index = WorldMetaStorage.GetWorldComponentID<T>(_worldTypeID);
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if (index >= _components.Length)
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Array.Resize(ref _executors, _executors.Length << 1);
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var result = _components[index];
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if (result == null)
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{
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result = new T();
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_components[index] = result;
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}
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return (T)result;
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}
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#endregion
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#region Where Query
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public EcsReadonlyGroup WhereFor<TSubject>(EcsReadonlyGroup sourceGroup, out TSubject subject) where TSubject : EcsSubject
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{
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var executor = GetExecutor<EcsWhereExecutor<TSubject>>();
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subject = executor.Subject;
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return executor.ExecuteFor(sourceGroup);
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}
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public EcsReadonlyGroup WhereFor<TSubject>(EcsReadonlyGroup sourceGroup) where TSubject : EcsSubject
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{
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return GetExecutor<EcsWhereExecutor<TSubject>>().ExecuteFor(sourceGroup);
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}
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public EcsReadonlyGroup Where<TSubject>(out TSubject subject) where TSubject : EcsSubject
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{
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var executor = GetExecutor<EcsWhereExecutor<TSubject>>();
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subject = executor.Subject;
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return executor.Execute();
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}
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public EcsReadonlyGroup Where<TSubject>() where TSubject : EcsSubject
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{
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return GetExecutor<EcsWhereExecutor<TSubject>>().Execute();
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}
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#endregion
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#region Entity
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public int NewEmptyEntity()
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{
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int entityID = _entityDispenser.GetFree();
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_entitiesCount++;
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if (_gens.Length <= entityID)
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{
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Array.Resize(ref _gens, _gens.Length << 1);
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Array.Resize(ref _componentCounts, _gens.Length);
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ArrayUtility.Fill(_gens, DEATH_GEN_BIT, _entitesCapacity);
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_entitesCapacity = _gens.Length;
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for (int i = 0; i < _groups.Count; i++)
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{
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if (_groups[i].TryGetTarget(out EcsGroup group))
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{
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group.OnWorldResize(_gens.Length);
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}
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else
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{
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int last = _groups.Count - 1;
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_groups[i--] = _groups[last];
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_groups.RemoveAt(last);
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}
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}
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foreach (var item in _pools)
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item.OnWorldResize(_gens.Length);
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_listeners.InvokeOnWorldResize(_gens.Length);
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}
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_gens[entityID] &= GEN_BITS;
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_allEntites.Add(entityID);
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_listeners.InvokeOnNewEntity(entityID);
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return entityID;
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}
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public entlong NewEmptyEntityLong()
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{
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int e = NewEmptyEntity();
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return GetEntityLong(e);
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}
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public void DelEntity(int entityID)
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{
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_allEntites.Remove(entityID);
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_delEntBuffer[_delEntBufferCount++] = entityID;
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_gens[entityID] |= DEATH_GEN_BIT;
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_entitiesCount--;
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_listeners.InvokeOnDelEntity(entityID);
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if (_delEntBufferCount >= _delEntBuffer.Length)
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ReleaseDelEntityBuffer();
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public entlong GetEntityLong(int entityID) => new entlong(entityID, _gens[entityID], uniqueID); //TODO придумать получше имя метода
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public bool IsAlive(int entityID, short gen) => _gens[entityID] == gen;
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public bool IsUsed(int entityID) => _gens[entityID] >= 0;
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public short GetGen(int entityID) => _gens[entityID];
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public short GetComponentsCount(int entityID) => _componentCounts[entityID];
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public bool IsMatchesMask(EcsMask mask, int entityID)
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{
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#if (DEBUG && !DISABLE_DEBUG) || !DISABLE_DRAGONECS_ASSERT_CHEKS
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if (mask._worldType != Archetype)
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throw new EcsFrameworkException("The types of the target world of the mask and this world are different.");
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#endif
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for (int i = 0, iMax = mask._inc.Length; i < iMax; i++)
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{
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if (!_pools[mask._inc[i]].Has(entityID))
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return false;
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}
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for (int i = 0, iMax = mask._exc.Length; i < iMax; i++)
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{
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if (_pools[mask._exc[i]].Has(entityID))
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return false;
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}
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return true;
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}
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public void ReleaseDelEntityBuffer()
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{
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ReadOnlySpan<int> buffser = new ReadOnlySpan<int>(_delEntBuffer, 0, _delEntBufferCount);
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foreach (var pool in _pools)
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pool.OnReleaseDelEntityBuffer(buffser);
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_listeners.InvokeOnReleaseDelEntityBuffer(buffser);
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for (int i = 0; i < _delEntBufferCount; i++)
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_entityDispenser.Release(_delEntBuffer[i]);
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_delEntBufferCount = 0;
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}
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public void DeleteEmptyEntites()
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{
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foreach (var e in _allEntites)
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{
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if (_componentCounts[e] <= 0) DelEntity(e);
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}
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}
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#region Copy/Clone
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public void CopyEntity(int fromEntityID, int toEntityID)
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{
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foreach (var pool in _pools)
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{
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if (pool.Has(fromEntityID)) pool.Copy(fromEntityID, toEntityID);
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}
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}
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public int CloneEntity(int fromEntityID)
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{
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int newEntity = NewEmptyEntity();
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CopyEntity(fromEntityID, newEntity);
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return newEntity;
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}
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public void CloneEntity(int fromEntityID, int toEntityID)
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{
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CopyEntity(fromEntityID, toEntityID);
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foreach (var pool in _pools)
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{
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if (!pool.Has(fromEntityID) && pool.Has(toEntityID))
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pool.Del(toEntityID);
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}
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}
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#endregion
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#region Components Increment
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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internal void IncrementEntityComponentCount(int entityID) => _componentCounts[entityID]++;
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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internal void DecrementEntityComponentCount(int entityID)
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{
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var count = --_componentCounts[entityID];
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if (count == 0 && _allEntites.Has(entityID)) DelEntity(entityID);
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#if (DEBUG && !DISABLE_DEBUG) || !DISABLE_DRAGONECS_ASSERT_CHEKS
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if (count < 0) throw new EcsFrameworkException("нарушен баланс инкремента/декремента компонентов");
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#endif
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}
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#endregion
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#endregion
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#region Groups Pool
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internal void RegisterGroup(EcsGroup group)
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{
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_groups.Add(new WeakReference<EcsGroup>(group));
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}
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internal EcsGroup GetFreeGroup()
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{
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EcsGroup result = _groupsPool.Count <= 0 ? new EcsGroup(this) : _groupsPool.Pop();
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result._isReleased = false;
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return result;
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}
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internal void ReleaseGroup(EcsGroup group)
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{
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#if (DEBUG && !DISABLE_DEBUG) || !DISABLE_DRAGONECS_ASSERT_CHEKS
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if (group.World != this)
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throw new ArgumentException("groupFilter.WorldIndex != this");
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#endif
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group._isReleased = true;
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group.Clear();
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_groupsPool.Push(group);
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}
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#endregion
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#region Debug
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public void GetComponents(int entityID, List<object> list)
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{
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list.Clear();
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var itemsCount = GetComponentsCount(entityID);
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if (itemsCount == 0)
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return;
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for (var i = 0; i < _pools.Length; i++)
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{
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if (_pools[i].Has(entityID))
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list.Add(_pools[i].GetRaw(entityID));
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if (list.Count >= itemsCount)
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break;
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}
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}
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#endregion
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}
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internal sealed class EcsNullWorld : EcsWorld<EcsNullWorld>
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{
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public EcsNullWorld() : base(false) { }
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}
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public abstract class EcsWorld<TWorldArchetype> : EcsWorld
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where TWorldArchetype : EcsWorld<TWorldArchetype>
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{
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public override Type Archetype => typeof(TWorldArchetype);
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public EcsWorld() : base() { }
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internal EcsWorld(bool isIndexable) : base(isIndexable) { }
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}
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#region Callbacks Interface
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public interface IEcsWorldEventListener
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{
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void OnWorldResize(int newSize);
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void OnReleaseDelEntityBuffer(ReadOnlySpan<int> buffer);
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void OnWorldDestroy();
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void OnNewEntity(int entityID);
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void OnDelEntity(int entityID);
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}
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internal static class WorldEventListExtensions
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void InvokeOnWorldResize(this List<IEcsWorldEventListener> self, int newSize)
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{
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for (int i = 0, iMax = self.Count; i < iMax; i++) self[i].OnWorldResize(newSize);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void InvokeOnReleaseDelEntityBuffer(this List<IEcsWorldEventListener> self, ReadOnlySpan<int> buffer)
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{
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for (int i = 0, iMax = self.Count; i < iMax; i++) self[i].OnReleaseDelEntityBuffer(buffer);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void InvokeOnWorldDestroy(this List<IEcsWorldEventListener> self)
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{
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for (int i = 0, iMax = self.Count; i < iMax; i++) self[i].OnWorldDestroy();
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void InvokeOnNewEntity(this List<IEcsWorldEventListener> self, int entityID)
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{
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for (int i = 0, iMax = self.Count; i < iMax; i++) self[i].OnNewEntity(entityID);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void InvokeOnDelEntity(this List<IEcsWorldEventListener> self, int entityID)
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{
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for (int i = 0, iMax = self.Count; i < iMax; i++) self[i].OnDelEntity(entityID);
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}
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}
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#endregion
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#region Extensions
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public static class IntExtensions
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static entlong ToEntityLong(this int self, EcsWorld world) => world.GetEntityLong(self);
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}
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#endregion
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}
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