Unity 实用技巧 之 简便的物体一波一波自动生成
1、Object.Instantiate：
1）功能描述
Clones the object original and returns the clone.
This function makes a copy of an object in a similar way to the Duplicate command in the editor. If you are cloning a GameObject then you can also optionally specify its position and rotation (these default to the original GameObject's position and rotation otherwise). If you are cloning a Component then the GameObject it is attached to will also be cloned, again with an optional position and rotation.When you clone a GameObject or Component, all child objects and components will also be cloned with their properties set like those of the original object.
2）使用案例
using UnityEngine;
using System.Collections;
public class ExampleClass : MonoBehaviour {
public Rigidbody projectile;
void Update() {
if (Input.GetButtonDown("Fire1")) {
Rigidbody clone;
clone = Instantiate(projectile, transform.position, transform.rotation) as Rigidbody;
clone.velocity = transform.TransformDirection(Vector3.forward * 10);
}
}
}
2、方法要点：
1）设置生成单体的计时器和时间间隔
private float timerOne = 1f; private float timeOne = 1.0f;
2）设置生成一波的计时器和时间间隔
private float timerWave = 0f; private float timeWave = 10.0f;
3）设置生成一波的数量和预制体
private int countPerWave = 0; public GameObject spawnPerfab;
4）计时的方法
timerWave += Time.deltaTime;
1、打开Unity，新建一个空工程，具体如下
2、在场景中，新建一个“Plane”，和“Cube”，调小“Cube”的比例，具体如下图
3、新建2个脚本，命名为“MoveDestroyTest”、“SpawnTest”，双击脚本或者右键“Open C# Project”打开脚本，具体如下图
4、在打开的“MoveDestroyTest”脚本上编写代码，首先在Start函数里面调用3庙后自我销毁函数，然后在Update函数里面设置自我移动，最后实现自我销毁函数，代码及代码说明如下图
5、“MoveDestroyTest”脚本具体内容如下
using UnityEngine;
public class MoveDestroyTest : MonoBehaviour {
// Use this for initialization
void Start () {
DeatroySlef3Second ();
}
// Update is called once per frame
void Update () {
transform.Translate (Vector3.right * Time.deltaTime * 2 );
}
private void DeatroySlef3Second() {
Destroy (transform.gameObject, 3);
}
}
6、在打开的“SpawnTest”脚本上编写代码，首先设置生成一个预制体的计时器和时间间隔，以及一波预制体生成的计时器和时间间隔，然后设置生成的数量计数和生成预制体，接着先计时一波的时间，在时间内以及数量内进行每一个的计时与生成计数，随后一波时间到达后，重新计时与重置生成预制体数量，代码及代码说明如下图
7、“SpawnTest”脚本具体内容如下：
using UnityEngine;
public class SpawnTest : MonoBehaviour {
private float timerOne = 1f;
private float timeOne = 1.0f;
private float timerWave = 0f;
private float timeWave = 10.0f;
private int countPerWave = 0;
public GameObject spawnPerfab;
// Update is called once per frame
void Update () {
timerWave += Time.deltaTime;
if(timerWave < timeWave && countPerWave != 5) {
timerOne += Time.deltaTime;
if(timerOne > timeOne) {
Instantiate (spawnPerfab, new Vector3(-3.5f , 0.5f,
Random.Range (-4.0f, 4.0f)),
spawnPerfab.transform.rotation);
countPerWave++;
timerOne -= timeOne;
}
}
if (timerWave >= timeWave) {
timerWave -= timeWave;
countPerWave = 0;
}
}
}
8、脚本编译正确后，回到 Unity 界面，把“MoveDestroyTest”赋给“Cube”，并把“Cube”做成预制体，场景中的“Cube”，可以删除掉，具体如下图
9、在场景中新建一个“GameObject”，把脚本“SpawnTest”赋给“GameObject”，并把预制体“Cube”赋值给脚本“SpawnTest”，具体如下图
10、运行场景，即可看到场景中预制体一波一波的自动生成，自动移动，自动销毁，具体如下图
11、到此，《Unity 实用技巧 之 简便的物体一波一波自动生成》讲解结束，谢谢