每4-5帧随机一次。不是每一帧

Question

我正在做一个学校项目，在那里，一个“玩家”正在靠近墙壁移动。这面墙是由立方体(1x1x1)构成的。这些立方体中有立方体(0.9x0.9x0.9)，当玩家在他们旁边移动时，这些立方体向外移动。

这个动画现在移动每一个1帧。这是有点滞后和不自然。

我希望这个动画移动每一个5帧。

using UnityEngine;
using System.Collections;

public class InteractiefBlokje : MonoBehaviour {

    private Transform thePlayer;

    private Transform binnenBlokje;

    // Use this for initialization
    void Start () {
        // referentie naar binnenblokje
        binnenBlokje = this.gameObject.transform.GetChild(0);
        // referentie naar de 'player'
        thePlayer = GameObject.FindGameObjectWithTag("Player").transform;
        Debug.Log(thePlayer);
    }

    // Update is called once per frame
    void Update () {
        Vector3 myPosition = this.transform.position;
        Vector3 playerPosition = thePlayer.position;

        // afstand tussen player en dit blokje
        float distance = Mathf.Clamp(Vector2.Distance(new Vector2(myPosition.x, myPosition.z), new Vector2(playerPosition.x, playerPosition.z)), 0, 50);

        // bij afstand 3 -> x = 0.8
        // bij afstand 5 -> x = 0

        binnenBlokje.position = new Vector3(Random.Range(0, (distance - 5.0f) * -0.4f), this.transform.position.y, this.transform.position.z);
    }
}

Answer 1

如果您想要计算帧，可以使用计数器，例如：

int FrameCounter = 5;

void Update () {
    if (FrameCounter++ % 5 == 0)
    {
        // your animation goes there
    }
}

或

int FrameCounter = 5;

void Update () {
    if (FrameCounter++ >= 5)
    {
        FrameCounter = 1;
        // your animation goes there
    }
}

但是，由于每个帧之间存在时间差(FPS可以下降/增加)，所以您可能需要使用时间。

float timeBetweenAnimations = 0.1f; //0.1 second, arbitrary value
float timer = timeBetweenAnimations;

void Update () {
    timer += Time.deltaTime; // increase the timer by the time elapsed since last frame

    if (timer >= timeBetweenAnimations)
    {
        timer = 0; // reset the timer to 0
        // your animation goes there
    }
}

或者，可以使用定时器和速度来定义距离(距离=速度*时间)

float timer;
float speed = 2.0f; // arbitrary value of 2 units per seconds

void Update () {
    timer = Time.deltaTime; // set the timer by the time elapsed since last frame
    var direction = new Vector3(...); // the direction you want your object to move, replace the ... by the real vector you need
     theObjectToMove.transform.position = direction * speed * timer; // feel free to add a * randomValue to increase/decrease randomly that speed
}