Unity ecs physics trigger

Unity DOTS中的物理系统即Unity.Physics，这里使用一个简单的demo（小球弹起效果），来说明一下 碰撞 Trigger。

1、创建sphere（注意，要去掉ShpereCollider），添加Physics Shape，ShapeType 选择 Sphere，PhysicsShape 选择RaiseTriggerEvents；添加 Physics Body。（当然添加ConvertToEntity是必须的，关于ConvertToEntity的使用可以看一下官网demo）

2、创建plane（注意，要去掉MeshCollider），添加Physics Shape，ShapeType 选择 Plane。

3、小球弹起，触发逻辑

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Unity.Entities;
using Unity.Mathematics;
using Unity.Transforms;
using Unity.Physics;
using Unity.Collections;
using Unity.Physics.Systems;public class PhysicalSystem : SystemBase
{
    private BuildPhysicsWorld m_buildPhysicsWorld;//物理系统的准备工作，将TriggerCollisionEvents传递给Jobprivate StepPhysicsWorld m_stepPhysicsWorld;//物理系统的准备工作，将TriggerCollisionEvents传递给Jobprotected override void OnCreate(){
    m_buildPhysicsWorld = World.GetOrCreateSystem<BuildPhysicsWorld>();m_stepPhysicsWorld = World.GetOrCreateSystem<StepPhysicsWorld>();}protected override void OnUpdate(){
    TriggerJob triggerJob = new TriggerJob(){
    PhysicVelocityGroup = GetComponentDataFromEntity<PhysicsVelocity>()};Dependency = triggerJob.Schedule(m_stepPhysicsWorld.Simulation, ref m_buildPhysicsWorld.PhysicsWorld, Dependency);}
}public struct TriggerJob : ITriggerEventsJob
{
    /// <summary>/// cube和sphere中只有小球添加了PhysicsBody，在转成entity后，只有小球有physicsvelocity/// </summary>public ComponentDataFromEntity<PhysicsVelocity> PhysicVelocityGroup;public void Execute(TriggerEvent triggerEvent){
    if (PhysicVelocityGroup.HasComponent(triggerEvent.EntityA)){
    Debug.Log("EntityA is sphere = " + triggerEvent.EntityA);var velocity = PhysicVelocityGroup[triggerEvent.EntityA];velocity.Linear.y = 10f;//如果是小球改变它的物理速度PhysicVelocityGroup[triggerEvent.EntityA] = velocity;}if (PhysicVelocityGroup.HasComponent(triggerEvent.EntityB)){
    Debug.Log("EntityB is sphere = " + triggerEvent.EntityB);var velocity = PhysicVelocityGroup[triggerEvent.EntityB];velocity.Linear.y = 10f;//如果是小球改变它的物理速度PhysicVelocityGroup[triggerEvent.EntityB] = velocity;}}
}