DOTS_Pong/DOTS_Pong/Assets/Scripts/Systems/BallGoalCheckSystem.cs

using Unity.Entities;
using Unity.Transforms;
using Unity.Collections;
using Unity.Mathematics;
using Unity.Jobs;

[AlwaysSynchronizeSystem]
public class BallGoalCheckSystem : JobComponentSystem
{
	protected override JobHandle OnUpdate(JobHandle inputDeps)
	{
		EntityCommandBuffer ecb = new EntityCommandBuffer(Allocator.TempJob);

		Entities
			.WithAll<BallTag>()
			.WithoutBurst()
			.ForEach((Entity entity, in Translation trans) =>
			{
				float3 pos = trans.Value;
				float bound = GameManager.main.xBound;

				if (pos.x >= bound)
				{
					GameManager.main.PlayerScored(0);
					ecb.DestroyEntity(entity);
				}
				else if (pos.x <= -bound)
				{
					GameManager.main.PlayerScored(1);
					ecb.DestroyEntity(entity);
				}
			}).Run();

		ecb.Playback(EntityManager);
		ecb.Dispose();

		return default;
	}
}