using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Unity.Entities;
using Unity.Physics.Systems;
using Unity.Collections;
using Unity.Jobs;
using Unity.Burst;
using Unity.Physics;

[UpdateAfter(typeof(StepPhysicsWorld)), UpdateBefore(typeof(EndFramePhysicsSystem))]
public class AttackCollisionSystem : JobComponentSystem
{
    private EndSimulationEntityCommandBufferSystem endSimBuffer;
    private BuildPhysicsWorld physicsWorld;
    private StepPhysicsWorld stepPhysicsWorld;

    protected override void OnCreate()
    {
        physicsWorld = World.GetOrCreateSystem<BuildPhysicsWorld>();
        stepPhysicsWorld = World.GetOrCreateSystem<StepPhysicsWorld>();
        endSimBuffer = World.GetOrCreateSystem<EndSimulationEntityCommandBufferSystem>();
        base.OnCreate();
    }

    protected override JobHandle OnUpdate(JobHandle inputDeps)
    {
        JobHandle jh = new ScanForImpact
        {
            ecb = endSimBuffer.CreateCommandBuffer().ToConcurrent(),

        }.Schedule(stepPhysicsWorld.Simulation, ref physicsWorld.PhysicsWorld, inputDeps);
        endSimBuffer.AddJobHandleForProducer(jh);
        return jh;
    }

    private struct ScanForImpact : ICollisionEventsJob
    {
        public EntityCommandBuffer.Concurrent ecb;
        public void Execute(CollisionEvent collisionEvent)
        {



            Debug.Log("collision!");
        }

    }
}