C# 当玩家接近一个航路点时，他会减速，然后再加速，我怎么能做到这一点呢？

但是如果航路点对象半径大于2，则玩家将卡在该航路点。因此，我认为，与2f相比，它应该类似于距离<航路点[i]。半径或如何找到半径。逻辑是找到每个路径点的半径，并检查其半径，而不是2f

编辑

这是我的航路点脚本。我正在向waypoints数组中的每个航路点添加碰撞器和减速脚本：

if (distance < 2f)
    targetsIndex++;

在第三个personcontroller脚本中，我添加了这个

using UnityEngine;
using UnityStandardAssets.Characters.FirstPerson;

class SlowDown : MonoBehaviour
{
    private void OnTriggerEnter(Collider other)
    {
        Debug.Log("Object " + other.name + " entered " + name);
        WayPoints.SetSpeed(WayPoints.moveSpeedSlowedWalk);
    }

    private void OnTriggerExit(Collider other)
    {
        Debug.Log("Object " + other.name + " exited " + name);
        WayPoints.SetSpeed(WayPoints.moveSpeedWalk);
    }
}

现在我只使用移动速度变量，而不是行走速度。所以我现在只使用移动，因为它是第三个人控制器，而不是第一个人控制器

---

但在进入OnTriggerEnter任何路径点时，它仍然不会减速。

我的想法是，如果它是内联的，您可以检查两个检查点之间的距离，然后计算速度

public void ChangeSpeed(float move)
        {
            m_MoveSpeedMultiplier = move;
        }

---

假设玩家移动速度通过浮动改变，并且您使用的是unity standard asset第三第一人称控制器。您可以将其调整到您的自定义播放器控制器。无论如何，此脚本要求您在编辑器中设置moveSpeedSetter、moveSpeedSlowedSetter和motorSetter。你可以把这个脚本放在任何你喜欢的地方

var distanceCheckpoint = Vector3.Distance(checpoint_1.position, checpoint_2.position);
var distance = Vector3.Distance(myTransform.position, target.transform.position);
var thresholdSpeed = distance / distanceCheckpoint * moveSpeed;

之后，在所有航路点中创建空对象，并向其添加触发器。然后使用触发器将此脚本放在新创建的对象上

using UnityEngine;

public class WayPoints : MonoBehaviour
{
    //setters for setting everything in Unity editor
    public float moveSpeedSetter = 1f;
    public float moveSpeedSlowedSetter = 0.5f;
    public CharacterMotor motorSetter;

    //static objects changeable via any script
    public static float moveSpeed;
    public static float moveSpeedSlowed;
    public static CharacterMotor motor;

    public static void SetSpeed(float speed)
    {
        motor.movement.maxForwardSpeed = speed;
    }

    private void Start()
    {
        moveSpeed = moveSpeedSetter;
        moveSpeedSlowed = moveSpeedSlowedSetter;
        motor = motorSetter;
        motor.movement.maxForwardSpeed = moveSpeed;
    }
}

——编辑下面的UNITY 5---

因此，为了在Unity standard asset的gameObject FPSController中准确地访问object FirstPersonController的float WalkSpeed和RunSpeed，您必须对其进行修改或创建自己的访问方法，如下图所示。（您可以将其放在FirstPersonController脚本中的任意位置）

这是运动速度控制的脚本

 public void ChangeSpeed(float walk,float run)
        {
            m_WalkSpeed = walk;
            m_RunSpeed = run;
        }

下面是航路点的脚本

using UnityEngine;
using UnityStandardAssets.Characters.FirstPerson;

public class WayPoints : MonoBehaviour
{
    //setters for setting everything in Unity editor
    public float moveSpeedRunSetter = 10f;
    public float moveSpeedSlowedRunSetter = 6f;
    public float moveSpeedWalkSetter = 5f;
    public float moveSpeedSlowedWalkSetter = 3f;
    public FirstPersonController motorSetter;

    //static objects changeable via any script
    public static float moveSpeedRun;
    public static float moveSpeedSlowedRun;
    public static float moveSpeedWalk;
    public static float moveSpeedSlowedWalk;
    public static FirstPersonController motor;

    public static void SetSpeed(float walk, float run)
    {
        motor.ChangeSpeed(walk, run);
    }

    private void Start()
    {
        moveSpeedWalk = moveSpeedWalkSetter;
        moveSpeedSlowedWalk = moveSpeedSlowedWalkSetter;
        moveSpeedRun = moveSpeedRunSetter;
        moveSpeedSlowedRun = moveSpeedSlowedRunSetter;
        motor = motorSetter;
        motor.ChangeSpeed(moveSpeedWalk, moveSpeedRun);
    }
}

---

motor和MOTORSETER type应该是什么变量？它是属于Unity标准资产的class CharacterMotor的对象。它是第一人称控制器的组成部分。你可以直接将第一人称控件拖放到编辑器中的相应位置。我在谷歌上搜索了它，发现由于unity 4左右没有CharacterMotor，但我也在编辑器中的资源中搜索到了没有Motor或CharacterMotor。我应该进口一些包裹吗？我已经在Standrad资源中导入了角色，但是没有CharacterMotor。你是对的，我使用了旧项目中的FPS控制器。很抱歉，我编辑了Unity 5 controller的答案。当然，在第行，tridperson=new tridperson（），这样做会创建只存在于内存中的新对象。您需要它是编辑器中的对象。

using UnityEngine;

public class WayPoints : MonoBehaviour
{
    //setters for setting everything in Unity editor
    public float moveSpeedSetter = 1f;
    public float moveSpeedSlowedSetter = 0.5f;
    public CharacterMotor motorSetter;

    //static objects changeable via any script
    public static float moveSpeed;
    public static float moveSpeedSlowed;
    public static CharacterMotor motor;

    public static void SetSpeed(float speed)
    {
        motor.movement.maxForwardSpeed = speed;
    }

    private void Start()
    {
        moveSpeed = moveSpeedSetter;
        moveSpeedSlowed = moveSpeedSlowedSetter;
        motor = motorSetter;
        motor.movement.maxForwardSpeed = moveSpeed;
    }
}

using UnityEngine;

class SlowDown : MonoBehaviour
{ 
    private void OnTriggerEnter(Collider other)
    {
        Debug.Log("Object " +other.name+" entered "+ name);
        WayPoints.SetSpeed(WayPoints.moveSpeedSlowed);
    }

    private void OnTriggerExit(Collider other)
    {
        Debug.Log("Object " + other.name + " exited " + name);
        WayPoints.SetSpeed(WayPoints.moveSpeed);
    }
}

 public void ChangeSpeed(float walk,float run)
        {
            m_WalkSpeed = walk;
            m_RunSpeed = run;
        }

using UnityEngine;
using UnityStandardAssets.Characters.FirstPerson;

public class WayPoints : MonoBehaviour
{
    //setters for setting everything in Unity editor
    public float moveSpeedRunSetter = 10f;
    public float moveSpeedSlowedRunSetter = 6f;
    public float moveSpeedWalkSetter = 5f;
    public float moveSpeedSlowedWalkSetter = 3f;
    public FirstPersonController motorSetter;

    //static objects changeable via any script
    public static float moveSpeedRun;
    public static float moveSpeedSlowedRun;
    public static float moveSpeedWalk;
    public static float moveSpeedSlowedWalk;
    public static FirstPersonController motor;

    public static void SetSpeed(float walk, float run)
    {
        motor.ChangeSpeed(walk, run);
    }

    private void Start()
    {
        moveSpeedWalk = moveSpeedWalkSetter;
        moveSpeedSlowedWalk = moveSpeedSlowedWalkSetter;
        moveSpeedRun = moveSpeedRunSetter;
        moveSpeedSlowedRun = moveSpeedSlowedRunSetter;
        motor = motorSetter;
        motor.ChangeSpeed(moveSpeedWalk, moveSpeedRun);
    }
}

using UnityEngine;
using UnityStandardAssets.Characters.FirstPerson;

class SlowDown : MonoBehaviour
{ 
    private void OnTriggerEnter(Collider other)
    {
        Debug.Log("Object " +other.name+" entered "+ name);
        WayPoints.SetSpeed(WayPoints.moveSpeedSlowedWalk, WayPoints.moveSpeedSlowedRun);
    }

    private void OnTriggerExit(Collider other)
    {
        Debug.Log("Object " + other.name + " exited " + name);
        WayPoints.SetSpeed(WayPoints.moveSpeedWalk, WayPoints.moveSpeedRun);
    }
}