c# - 如何增加生成对象的 y(实例化)？

Question

我怎样才能使预制件 2 在比预制件 1 更高的 y 上实例化。它们从同一位置随机生成。代码:

// Start is called before the first frame update
void Start()
{

}

// Update is called once per frame
void Update()
{
    if (Time.time > nextSpawn)
    {

        what = Random.Range(1, 3);
        Debug.Log(what);
        switch (what)
        {
            case 1:
                Instantiate(prefab1, transform.position, Quaternion.identity);
                break;
            case 2:
                Instantiate(prefab2, transform.position.y, Quaternion.identity);
                break;

        }
        nextSpawn = Time.time + SpawnRate;
    }
}

抱歉，我知道解决方案可能很简单，但我就是找不到。

Answer 1

您的Instatiate 方法调用有问题。在您使用它的方式中，第二个参数需要是 Vector3 类型，而 transform.position.y 是 float 类型。下面是一些示例代码，我相信您会发现它很有用。

float spawnRate = 5f;
float spawnTime;

//how high you would like your new object to spawn above transform.position
float yValueDifference = 5f;

void Update () 
{

    if (Time.time - spawnTime > spawnRate) 
    {
        //pick a random number from 0-1
        int type = Random.Range(0, 2);

        Vector3 position = new Vector3(transform.position.x, transform.position.y, transform.position.z);
        if (type == 1)
            position.y += yValueDifference;

        //if type is 0, use prefab1, if type is 1, use prefab2
        GameObject prefab = type == 0 ? prefab1 : prefab2;
        Instantiate(prefab, position, Quaternion.identity);

        //reset the timer
        spawnTime = Time.time;
    }

}