AnyComponent.cs

using System.Collections;
using System.Collections.Generic;
using Unity.Collections;
using Unity.Jobs;
using UnityEngine;
using System.Linq;

public class AnyComponent : MonoBehaviour 
{
	[SerializeField] Transform[] targets;
	[SerializeField] Transform[] players;

	void Update()
	{
		var targetPositions = new NativeArray<Vector2>(
			targets.Select(c => (Vector2)c.position).ToArray(), Allocator.Temp);
		var playerPositions = new NativeArray<Vector2>(
			players.Select(c => (Vector2)c.position).ToArray(), Allocator.Temp);

		var job = new HitCheckJob(){
			playersPositions = playerPositions,
			source = targetPositions,
			isHit = new NativeArray<int>(players.Length, Allocator.TempJob),
		};
		var handle = job.Schedule(players.Length, 2);

		handle.Complete();

		Debug.Log( job.isHit[0] );

		job.isHit.Dispose();

		targetPositions.Dispose();
		playerPositions.Dispose();
	}
	
    struct HitCheckJob : IJobParallelFor
    {
		[ReadOnly] public NativeArray<Vector2> playersPositions;

		// public NativeArray<Vector2> source;
		[ReadOnly] public NativeArray<Vector2> source; // index外にアクセスするものはReadOnlyを設定

		[WriteOnly] public NativeArray<int> isHit;

        public void Execute(int index)
        {
			var length = source.Length;
			var playerPosition = playersPositions[index];
			for(int i=0; i<length; i++){
				var distance = Vector2.Distance(playerPosition, source[i]);
				if( distance < 1){
					isHit[index] = 1;
					return;
				}
			}
        }
    }
}