JisolGame/JNFrame/Assets/Script/battle/mode/GDemo.cs

using Unity.Burst;
using Unity.Entities;
using Unity.Jobs;
using Unity.Physics;
using Unity.Physics.Systems;
using UnityEngine;

namespace Script.battle.mode
{
    // ISystem version
    [UpdateInGroup(typeof(FixedStepSimulationSystemGroup))]
    [UpdateBefore(typeof(PhysicsSystemGroup))] // Make sure that the running order of systems is correct
    public partial struct GDemo : ISystem
    {
        [BurstCompile]
        public partial struct CastRayJob : IJob
        {
            public PhysicsWorldSingleton World;

            public void Execute()
            {
            }
        }


        [BurstCompile]
        public void OnUpdate(ref SystemState state)
        {
            PhysicsWorldSingleton physicsWorldSingleton = SystemAPI.GetSingleton<PhysicsWorldSingleton>();
            Debug.Log(physicsWorldSingleton.PhysicsWorld.NumBodies);
        }
        
    }

}