Question

如何将时间创建为两个对象之间的距离？

我有一个玩家和一个物体必须以1秒，0.85秒，0.7秒的速度向玩家走来，依此类推。但是，我不知道这样做。我有一个移动的2D地图，速度为-4，给人一种向上跑的幻觉：

图片上的红色三角形是需要朝向玩家的对象，它的速度也是-4。我使用Time.deltaTime创建了这个动作，所以我会实时工作。有了这个逻辑，我相信我必须将对象4F远离玩家，以创建一个1秒的间隔（desiredSeconds * speed）。

PlayerScript

using UnityEngine;
using System.Collections;

public class PlayerScript : MonoBehaviour {

    public GameObject obstacle;
    public GameObject player;

    public float playerDimensionY;

    public bool isRight = true;
    public bool inAir = false;
    public bool mouseClicked = false;

    public int flyingSpeed;

    float timeStamp1;
    float timeStamp2;

    bool runOnce = false;

    // Use this for initialization
    void Start () {
        Vector2 sprite_size = GetComponent<SpriteRenderer> ().sprite.rect.size;
        Vector2 spriteScale = transform.localScale;

        float sizeAndScaleY = sprite_size.y * spriteScale.y;

        float player_local_sprite_sizeY = (sizeAndScaleY / GetComponent<SpriteRenderer> ().sprite.pixelsPerUnit) * 0.5F;

        playerDimensionY = player_local_sprite_sizeY;
    }


    // Update is called once per frame
    void Update () {

        if (isRight == true && mouseClicked == true) {
            transform.position += Vector3.right * flyingSpeed * Time.deltaTime;
        } else if (isRight == false && mouseClicked == true) {
            transform.position += Vector3.left * flyingSpeed * Time.deltaTime;
        }

        if (Input.GetMouseButtonDown (0) && inAir == false) {
            mouseClicked = true;
            inAir = true;

            if (isRight == true) {
                isRight = false;
            } else if (isRight == false) {
                isRight = true;
            }
        }

        if (GameObject.FindWithTag ("Obstacle") != null && runOnce == false) {
            Debug.Log (string.Format("Spawn time: " + timeStamp1));
            runOnce = true;
        }

        timeStamp1 = Time.fixedTime;
        timeStamp2 = Time.fixedTime;
    }

    void OnCollisionEnter2D(Collision2D coll) {
        inAir = false;
        mouseClicked = false;
    }

    void OnTriggerEnter2D(Collider2D collTrig) {
        Debug.Log (string.Format ("Trigger time: " + timeStamp2));
    }
}

ObstacleScript：

using UnityEngine;
using System.Collections;

public class ObstacleScript : MonoBehaviour {

    public float constantSpeed;
    public float destroyTime;
    public float obstacleDimensionY;

    private float selfDestroyTime;

    // Use this for initialization
    void Awake () {
        selfDestroyTime = Time.time + destroyTime;
    }

    void Start() {
        Vector2 sprite_size = GetComponent<SpriteRenderer> ().sprite.rect.size;
        Vector2 spriteScale = transform.localScale;

        float sizeAndScaleY = sprite_size.y * spriteScale.y;

        float obstacle_local_sprite_sizeY = (sizeAndScaleY / GetComponent<SpriteRenderer> ().sprite.pixelsPerUnit) * 0.5F;

        obstacleDimensionY = obstacle_local_sprite_sizeY;
    }

    // Update is called once per frame
    void Update () {
        transform.position += Vector3.up * constantSpeed * Time.deltaTime;

        if (Time.time > selfDestroyTime) {
            Destroy (gameObject);
        }
    }
}

ObstacleSpawn：

using UnityEngine;
using System.Collections;

public class ObstacleSpawn : MonoBehaviour {

    public PlayerScript pScript;
    public ObstacleScript oScript;

    public GameObject player;
    public GameObject obstacle;

    public float randomSpawnMin;
    public float randomSpawnMax;

    // Use this for initialization
    void Start () {
        InvokeRepeating ("Spawn", 2F, Random.Range (randomSpawnMin, randomSpawnMax));
    }

    // Update is called once per frame
    void Update () {

    }

    void Spawn() {
        if (pScript.isRight == true && pScript.inAir == false) {
            obstacle.transform.localScale = new Vector3 (-1, 1, 1);
            Instantiate (obstacle, player.transform.position + new Vector3 (0.05F, 4F, 0), Quaternion.identity);
        } else if (pScript.isRight == false && pScript.inAir == false) {
            obstacle.transform.localScale = new Vector3 (1, 1, 1);
            Instantiate (obstacle, player.transform.position + new Vector3 (-0.05F, 4F, 0), Quaternion.identity);
        }
    }
}

然而，通过在障碍物产生和触发字符之间使用时间戳，我得到了0.5间隔而不是1的结果。因此，我接着尝试将其设为8F而不是4F，这应该导致我的1秒间隔，但令人惊讶地给出了0.86的间隔。

我很不知道自己错过了什么，但我觉得我设置deltaTime的方式可能存在缺陷。

亲切的问候。

编辑 - 添加代码：

using UnityEngine;
using System.Collections;

public class ObstacleSpawn : MonoBehaviour {

    public PlayerScript pScript;
    public ObstacleScript oScript;

    public GameObject player;
    public GameObject obstacle;

    public float randomSpawnMin;
    public float randomSpawnMax;

    // Use this for initialization
    void Start () {
        InvokeRepeating ("Spawn", 2F, Random.Range (randomSpawnMin, randomSpawnMax));
    }

    // Update is called once per frame
    void Update () { 
        var diff = (player.transform.position - obstacle.transform.position);
        diff = diff.normalized;
        Vector3 speed = new Vector3 (100 * Time.deltaTime, 100 * Time.deltaTime, 100 * Time.deltaTime);
        diff.x *= speed.x;
        diff.y *= speed.y;
        diff.z *= speed.z;
        obstacle.transform.position = obstacle.transform.position + diff;

    }

    void Spawn() {
        if (pScript.isRight == true && pScript.inAir == false) {
            obstacle.transform.localScale = new Vector3 (-1, 1, 1);
            Instantiate (obstacle, obstacle.transform.position, Quaternion.identity);
        } else if (pScript.isRight == false && pScript.inAir == false) {
            obstacle.transform.localScale = new Vector3 (1, 1, 1);
            Instantiate (obstacle, obstacle.transform.position, Quaternion.identity);
        }
    }
}

Answer 1

var diff = ( Player.transform.position - RedTriangle.transform.position    );
diff = diff.normalized;
var speed = Vector3(1*Time.deltaTime,1*Time.deltaTime,1*Time.deltaTime); // <- speed
diff.x *= speed.x;
diff.y *= speed.y;
diff.z *= speed.z;    
RedTriangle.transform.position = RedTriangle.transform.position + diff;

这样的事情需要更新脚本。（它会将三角形移向玩家）

创建对象之间的时间距离统一

1 个答案: