//Unity2018.2.0b4 [EntityComponentSystem(ECS) ver0.0.12-preview1]
using UnityEngine;
using Unity.Entities;
using Unity.Collections;
using System.Linq;
using System.Collections.Generic;
using Unity.Jobs;

struct DATA1 : IComponentData
{
    public int val;
}

//JobComponentSystemを継承したクラスはComponentData同士の依存関係をうまく処理してくれるとのこと。
class JOB_SYSTEM : JobComponentSystem {

    //IJobParallelForで書く場合の並列化
    [ComputeJobOptimization]
    struct JOB : IJobParallelFor {

        //並列化したいデータ
        public ComponentDataArray<DATA1> _data;

        public void Execute(int index)
        {
            var P = _data[index];
            P.val += 10;
            _data[index] = P;
        }
    }


    //JobComponentSystem
    protected override JobHandle OnUpdate(JobHandle inputDeps)
    {
        //ComponentGroup経由でComponentDataArrayを取得
        var data = this.GetComponentGroup(typeof(DATA1)).GetComponentDataArray<DATA1>();

        //JOBにdataを渡す
        var job = new JOB()
        {
            _data = data
        };

        //実行
        var outputdeps = job.Schedule(data.Length, 16, inputDeps);
        return outputdeps;
    }
}


class ECS_SCRIPT : MonoBehaviour
{
    EntityManager EM;
    private void Start()
    {
        EM = World.Active.GetOrCreateManager<EntityManager>();
        var archeType = EM.CreateArchetype(typeof(DATA1));

        var instance = new NativeArray<Entity>(50000, Allocator.Temp);
        EM.CreateEntity(archeType, instance);
        instance.Dispose();
    }

}