Question

我有一个脚本，让敌人以相同的速度向玩家移动，但是我试图让敌人减速，然后在他切换方向时加速。敌人目前仅向左移动并向玩家的位置书写。这是我的老板在更新功能中附加的脚本中的代码：

Vector2 targetPosition = new Vector2 (player.transform.position.x, transform.position.y); 
transform.position = Vector2.MoveTowards (transform.position, targetPosition, moveSpeed * Time.deltaTime);

我也尝试过使用Lerp并使用transform.position作为第一个参数，但是当玩家靠近时，boss会变慢，而玩家离开时，boss会变快。

transform.position = Vector2.Lerp (transform.position, targetPosition, moveSpeed * Time.deltaTime);

有人知道如何使敌人减速，然后在改变方向时逐渐提高速度，然后在完成改变方向后恢复正常速度

**编辑：**下面的完整脚本

using UnityEngine;

public class Roll : StateMachineBehaviour
{
    [SerializeField] private float moveSpeed = 2.4f; 
    [SerializeField] private float rotateSpeed = 100f; 

    [SerializeField] private float minRollTime = 6f;
    [SerializeField] private float maxRollTime = 8f;
    private float rollTimer = 0f; 

    [SerializeField] private float rightBoundary = 5f;
    [SerializeField] private float leftBoundary = -5f;

    private Transform playerTransform = null;
    private BossHealth bossHealth = null;     
    private Transform bossTransform = null;
    private Transform bodyTransform = null;
    private Transform earsTransform = null; 

    private Vector2 targetPosition = Vector2.zero; 

    override public void OnStateEnter(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
    {
        playerTransform = GameObject.FindWithTag("Player").transform; 

        bossHealth = animator.GetComponent<BossHealth>(); 

        Boss01 boss = FindObjectOfType<Boss01>(); 
        bossTransform = boss.bossTransform;  
        bodyTransform = boss.bodyTransform; 
        earsTransform = boss.earsTransform; 

        rollTimer = Random.Range (minRollTime, maxRollTime); 
    }

    override public void OnStateUpdate(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
    {
        if (bossTransform.position.x >= leftBoundary && bossTransform.position.x <= rightBoundary)
        {
            targetPosition = new Vector2(playerTransform.position.x, bossTransform.position.y);
            bossTransform.position = Vector2.MoveTowards(bossTransform.position, targetPosition, moveSpeed * Time.deltaTime);

            if (playerTransform.position.x > 0)
                bodyTransform.Rotate(0f, 0f, -rotateSpeed * Time.deltaTime); 
            else
                bodyTransform.Rotate(0f, 0f, rotateSpeed * Time.deltaTime); 
        }
        else if (bossTransform.position.x < leftBoundary) 
        {
            if (playerTransform.position.x > bossTransform.position.x) 
            {
                targetPosition = new Vector2(playerTransform.position.x, bossTransform.position.y);
                bossTransform.position = Vector2.MoveTowards(bossTransform.position, targetPosition, moveSpeed * Time.deltaTime);
            }
        }
        else
        {
            if (playerTransform.position.x < bossTransform.position.x) 
            {
                targetPosition = new Vector2(playerTransform.position.x, bossTransform.position.y);
                bossTransform.position = Vector2.MoveTowards(bossTransform.position, targetPosition, moveSpeed * Time.deltaTime);
            }
        }

        if (rollTimer <= 0f)
            animator.SetTrigger ("aim"); 
        else
            rollTimer -= Time.deltaTime; 

        if (bossHealth.CheckHealth())
            animator.SetTrigger ("transition"); 

        if (earsTransform.rotation != Quaternion.Euler (0f, 0f, 0f))
            earsTransform.rotation = Quaternion.Slerp(earsTransform.rotation, Quaternion.Euler(0f, 0f, 0f), 1f * Time.deltaTime); 
    }

    override public void OnStateExit(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
    {
        animator.ResetTrigger ("aim"); 
        animator.ResetTrigger ("transition"); 
    }
}

Answer 1

要获得位置（米/秒），您需要将速度* Time.deltatime乘以，从而获得米。要处理加速度，您需要处理变速。加速度是m / s2，乘以* Time.deltatime，您将获得即时速度，而该速度* Time.deltaTime将为您提供位置。

这里有一些伪代码（步长和速度应该是类变量，并且在更新中进行了修改。accel是恒定加速度，为简单起见，应该保持不变，我想您需要匀速加速运动）：

speed += accel * Time.deltaTime; // instant speed
step =  speed * Time.deltaTime; // calculate distance to move
transform.position = Vector3.MoveTowards(transform.position, target.position, step);

使用加速度符号+或-确定实体速度是增加（加速）还是减小（减速）。

希望有帮助

编辑：

完整脚本：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MoveTowards : MonoBehaviour
{
  public Transform target;
  private float step = 0f;
  private float speed = 0f;
  public float accel = 0f;
  // Start is called before the first frame update
  void Start()
  {

  }

  // Update is called once per frame
  void Update()
  {
    speed += accel * Time.deltaTime; // instant speed
    step = speed * Time.deltaTime; // calculate distance to move
    transform.position = Vector3.MoveTowards(transform.position, target.position, step);
  }
}

编辑器中所附脚本的屏幕截图：

将脚本附加到要移动的游戏对象，并将目标的变换附加到公共区域。选择您的加速度，从正向加速向负向加速后退，然后就知道了。

让敌人加速朝着Unity中的玩家前进

1 个答案: