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Unity组件——ECS常见组件/API理解及使用

文章目录

• Unity组件——ECS常见组件/API理解及使用
• 一、ECS常见组件
• 二、实现
• • 1.ComponentSystem:系统组件,包含 Update
  • 2.IComponentData:实体数据组件
  • 3.IConvertGameObjectToEntity:实现接口 对该物体进行转换实体操作.
  • 4.ConvertToEntity:挂载物体身上,将物体转换为实体
  • • 4.1.Translation:对坐标操控
  • 5.[DisableAutoCreation] :不自动创建系统
  • 6.创建预制体
  • 7.通过EntityManager修改组件的值
• 三、总结

一、ECS常见组件

系统组件、创建预制体、实体数据组件及对其操作；
注:引用命名空间 Unity.Entities

二、实现

1.ComponentSystem:系统组件,包含 Update

思考:类比Unity开发中脚本继承MonoBehaviour组件

using System;
using System.Collections.Generic;
using System.Text;
using UnityEngine;
using Unity.Entities;namespace Test1
{public class PrintSystem : ComponentSystem{protected override void OnUpdate(){Entities.ForEach((ref PrintComponyData pPrintComponentData) =>{Debug.Log(pPrintComponentData.printData);});}}
}

2.IComponentData:实体数据组件

思考:需要在结构体下编辑,类似Unity自己封装的Vector3

using Unity.Entities;namespace Test1
{public struct PrintComponyData : IComponentData{public float printData;}
}

3.IConvertGameObjectToEntity:实现接口 对该物体进行转换实体操作.

思考:给实体添加一个"属性"/将属性变为"实体的属性".

using UnityEngine;
using Unity.Entities;namespace Test1
{public class PrintAutoring :MonoBehaviour,  IConvertGameObjectToEntity{public float printData;public void Convert(Entity entity, EntityManager dstManager, GameObjectConversionSystem conversionSystem){dstManager.AddComponentData(entity, new PrintComponyData() { printData = printData });}}
}

4.ConvertToEntity:挂载物体身上,将物体转换为实体

4.1.Translation:对坐标操控

public class TranslationSystem : ComponentSystem
{protected override void OnUpdate(){Entities.ForEach((ref Translation pTranslationComponentData) =>{pTranslationComponentData.Value = new float3(0, 0.1f, 0.5f);});}
}

5.[DisableAutoCreation] :不自动创建系统

using Unity.Entities;
using Unity.Mathematics;
using Unity.Transforms;namespace Test2
{[DisableAutoCreation]public class TranslationSystem : ComponentSystem{protected override void OnUpdate(){Entities.ForEach((ref Translation pTranslationComponentData) =>{pTranslationComponentData.Value = new float3(0, 0.1f, 0.5f);});}}
}

6.创建预制体

using Unity.Entities;
using UnityEngine;public class ECSPrefabCreator_MZ : MonoBehaviour
{public GameObject cube;private void Start(){//获取当前世界设置cube = Resources.Load("Cube");GameObjectConversionSettings tempSettings = GameObjectConversionSettings.FromWorld(World.DefaultGameObjectInjectionWorld, null);//获取实体预制体Entity tempEntityPrefab = GameObjectConversionUtility.ConvertGameObjectHierarchy(cube, tempSettings);EntityManager entityManager = World.DefaultGameObjectInjectionWorld.EntityManager;Entity tempCube = entityManager.Instantiate(tempEntityPrefab);}
}

7.通过EntityManager修改组件的值

using Unity.Entities;
using Unity.Transforms;
using UnityEngine;public class ECSPrefabCreator_MZ : MonoBehaviour
{public GameObject cube;public float interval, sum;private void Start(){//获取当前世界设置cube = Resources.Load("Cube");GameObjectConversionSettings tempSettings = GameObjectConversionSettings.FromWorld(World.DefaultGameObjectInjectionWorld, null);//获取实体预制体Entity tempEntityPrefab = GameObjectConversionUtility.ConvertGameObjectHierarchy(cube, tempSettings);EntityManager entityManager = World.DefaultGameObjectInjectionWorld.EntityManager;Translation tempTransla = new Translation();tempTransla.Value = -interval;for (int i = 0; i < sum; i++){for (int j = 0; j < sum; j++){Entity tempCube = entityManager.Instantiate(tempEntityPrefab);tempTransla.Value.x += interval;//通过EntityManager修改组件的值entityManager.SetComponentData(tempCube, tempTransla);}tempTransla.Value.x = -interval;tempTransla.Value.y += interval;}}
}

三、总结

保持饥饿,保持愚蠢.

这世界唯一能够相信的就是你付出的努力和你走过的路.