parent
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20 changed files with 653 additions and 2 deletions
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using GameCore.TinyECS; |
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|
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namespace GameCore.Test |
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{ |
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using Entity = Entity<EntityType>; |
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|
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} |
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namespace GameCore.Test |
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{ |
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public enum EntityType |
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{ |
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Unit, |
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Monster, |
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} |
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|
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} |
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using System; |
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using Unity.Burst; |
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using Unity.Collections; |
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using Unity.Collections.LowLevel.Unsafe; |
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using Unity.Jobs; |
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using Unity.Mathematics; |
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using UnityEngine; |
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|
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namespace GameCore.Test |
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{ |
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[BurstCompile] |
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public struct TestJob : IJobParallelFor |
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{ |
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public void Execute(int index) |
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{ |
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|
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} |
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} |
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} |
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@ -0,0 +1,8 @@ |
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fileFormatVersion: 2 |
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guid: 4ebb82ca8005849b48d82e7b2799da17 |
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folderAsset: yes |
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using System; |
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|
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namespace GameCore.TinyECS |
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{ |
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public readonly struct Entity<TEnum> : IEquatable<Entity<TEnum>> where TEnum : unmanaged |
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{ |
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public readonly TEnum type; |
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public readonly int index; |
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public readonly int generation; |
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|
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public Entity(TEnum type, int index, int generation) |
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{ |
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this.type = type; |
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this.index = index; |
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this.generation = generation; |
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} |
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|
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public override string ToString() |
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{ |
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return $"Entity<{type}>({index},{generation})"; |
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} |
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|
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public bool Equals(Entity<TEnum> other) |
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{ |
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return type.Equals(other.type) && index == other.index && generation == other.generation; |
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} |
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|
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public override bool Equals(object obj) |
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{ |
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return obj is Entity<TEnum> other && Equals(other); |
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} |
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|
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public override int GetHashCode() |
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{ |
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return HashCode.Combine(type, index, generation); |
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} |
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public static bool operator ==(Entity<TEnum> lhs, Entity<TEnum> rhs) |
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{ |
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return lhs.Equals(rhs); |
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} |
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|
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public static bool operator !=(Entity<TEnum> lhs, Entity<TEnum> rhs) |
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{ |
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return !(lhs == rhs); |
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} |
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} |
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} |
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fileFormatVersion: 2 |
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guid: ad57411486945444c95e8a0aec2cf8b7 |
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defaultReferences: [] |
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@ -0,0 +1,129 @@ |
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using System; |
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using Unity.Collections; |
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using System.Diagnostics; |
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namespace GameCore.TinyECS |
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{ |
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public struct EntityCollection<TEnum> : IDisposable where TEnum : unmanaged |
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{ |
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private struct Buffer |
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{ |
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public int index; |
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public int generation; |
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} |
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private NativeList<Buffer> entityBuffer; |
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private NativeList<int> entityIndexToDataIndex; |
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private TEnum entityType; |
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public EntityCollection(TEnum type, int capacity, Allocator allocator) |
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{ |
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entityType = type; |
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entityBuffer = new (capacity, allocator); |
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entityIndexToDataIndex = new (capacity, allocator); |
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} |
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public void Dispose() |
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{ |
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entityBuffer.Dispose(); |
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entityIndexToDataIndex.Dispose(); |
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} |
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public int Count => entityBuffer.Length; |
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public Entity<TEnum> this[int index] |
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{ |
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get |
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{ |
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var buf = entityBuffer[index]; |
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return new(entityType, buf.index, buf.generation); |
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} |
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} |
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public int Add(Entity<TEnum> entity) |
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{ |
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CheckEntityType(entity); |
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var dataIndex = entityBuffer.Length; |
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var oldEntityCount = entityIndexToDataIndex.Length; |
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if (entity.index >= oldEntityCount) |
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{ |
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entityIndexToDataIndex.Resize(entity.index + 1, NativeArrayOptions.UninitializedMemory); |
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for (int i = oldEntityCount, e = entity.index - 1; i < e; ++i) |
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{ |
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entityIndexToDataIndex[i] = -1; |
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} |
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} |
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entityIndexToDataIndex[entity.index] = dataIndex; |
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entityBuffer.Add(new Buffer{index = entity.index, generation = entity.generation }); |
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return dataIndex; |
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} |
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public bool TryGetIndex(Entity<TEnum> entity, out int index) |
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{ |
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CheckEntityType(entity); |
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index = 0; |
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if (entity.index >= entityIndexToDataIndex.Length) |
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{ |
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return false; |
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} |
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index = entityIndexToDataIndex[entity.index]; |
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if (index < 0 || index >= entityBuffer.Length) |
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{ |
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return false; |
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} |
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var buf = entityBuffer[index]; |
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return buf.index == entity.index && buf.generation == entity.generation; |
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} |
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public bool Remove(Entity<TEnum> entity, out int index, out bool removeFromBack) |
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{ |
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CheckEntityType(entity); |
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if (!TryGetIndex(entity, out index)) |
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{ |
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removeFromBack = false; |
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return false; |
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} |
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removeFromBack = RemoveInternal(entity, index); |
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return true; |
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} |
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private bool RemoveInternal(Entity<TEnum> entity, int index) |
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{ |
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entityIndexToDataIndex[entity.index] = -1; |
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var backIndex = entityBuffer.Length - 1; |
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if (index == backIndex) |
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{ |
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entityBuffer.Resize(backIndex, NativeArrayOptions.UninitializedMemory); |
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return true; |
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} |
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var backBuf = entityBuffer[backIndex]; |
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entityBuffer.RemoveAtSwapBack(index); |
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entityIndexToDataIndex[backBuf.index] = index; |
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return false; |
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} |
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[Conditional("DEBUG")] |
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void CheckEntityType(Entity<TEnum> entity) |
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{ |
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if (!entity.type.Equals(entityType)) |
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throw new Exception($"Wrong entity type: {entity.type}"); |
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} |
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public void Clear() |
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{ |
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entityBuffer.Clear(); |
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entityIndexToDataIndex.Clear(); |
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} |
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} |
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} |
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@ -0,0 +1,11 @@ |
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fileFormatVersion: 2 |
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guid: c788a2d204aeb46b188a801ae66ab4ce |
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MonoImporter: |
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externalObjects: {} |
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serializedVersion: 2 |
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defaultReferences: [] |
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executionOrder: 0 |
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userData: |
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@ -0,0 +1,79 @@ |
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using System; |
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using Unity.Collections; |
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using Unity.Mathematics; |
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namespace GameCore.TinyECS |
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{ |
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public struct EntityGenerator<TEnum> : IDisposable where TEnum : unmanaged |
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{ |
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private NativeList<int> indexToGeneration; |
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private int beginSearchIndex; |
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private int freeCount; |
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private TEnum entityType; |
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public EntityGenerator(TEnum type, int capacity, Allocator allocator) |
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{ |
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indexToGeneration = new(capacity, allocator) { 0 }; |
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beginSearchIndex = 1; |
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freeCount = 0; |
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entityType = type; |
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} |
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public void Dispose() |
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{ |
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indexToGeneration.Dispose(); |
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} |
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public Entity<TEnum> Create() |
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{ |
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if (freeCount == 0) |
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{ |
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var index = indexToGeneration.Length; |
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indexToGeneration.Add(1); |
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return new(entityType, index, 1); |
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} |
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var count = indexToGeneration.Length; |
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for (var i = beginSearchIndex; i < count; ++i) |
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{ |
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var oldGeneration = indexToGeneration[i]; |
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if (oldGeneration >= 0) |
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continue; |
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beginSearchIndex = i + 1; |
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freeCount--; |
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var generation = 1 - oldGeneration; |
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indexToGeneration[i] = generation; |
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return new(entityType, i, generation); |
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} |
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throw new Exception("Impossible"); |
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} |
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public void Delete(Entity<TEnum> entity) |
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{ |
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var generation = indexToGeneration[entity.index]; |
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if (generation != entity.generation) |
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{ |
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throw new Exception($"Invalid entity: {entity}"); |
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} |
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indexToGeneration[entity.index] = -generation; |
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freeCount++; |
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beginSearchIndex = math.min(beginSearchIndex, entity.index); |
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} |
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public bool IsValid(Entity<TEnum> entity) |
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{ |
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var generation = indexToGeneration[entity.index]; |
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return generation == entity.generation; |
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} |
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|
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public void Clear() |
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{ |
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indexToGeneration.Resize(1, NativeArrayOptions.UninitializedMemory); |
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beginSearchIndex = 1; |
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freeCount = 0; |
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} |
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} |
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} |
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@ -0,0 +1,11 @@ |
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fileFormatVersion: 2 |
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@ -0,0 +1,33 @@ |
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{ |
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"name": "TinyECS.Runtime", |
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"rootNamespace": "", |
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"references": [ |
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"Unity.Collections", |
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"Unity.Mathematics" |
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], |
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"includePlatforms": [ |
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"Android", |
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"Editor", |
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"iOS", |
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"LinuxStandalone64", |
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"Lumin", |
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"macOSStandalone", |
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"PS4", |
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"Stadia", |
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"Switch", |
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"excludePlatforms": [], |
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"allowUnsafeCode": false, |
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"overrideReferences": false, |
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"precompiledReferences": [], |
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"autoReferenced": true, |
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"defineConstraints": [], |
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"versionDefines": [], |
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"noEngineReferences": false |
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} |
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@ -0,0 +1,7 @@ |
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fileFormatVersion: 2 |
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@ -0,0 +1,14 @@ |
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{ |
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"name": "com.nimin.tinyecs", |
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"displayName": "Tiny ECS", |
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"version": "0.1.0", |
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"unity": "2021.3", |
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"description": "Data oriented ECS famework", |
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"dependencies": { |
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"com.unity.collections": "1.2.4", |
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"com.unity.burst": "1.8.1" |
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}, |
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"keywords": [ |
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"ECS", "JobSystem" |
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] |
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} |
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@ -0,0 +1,7 @@ |
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fileFormatVersion: 2 |
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