如何在运行时更改移动对象的速度

Question

管理员脚本

using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
public class DronesManager : MonoBehaviour
{
public GameObject target;
public float movementSpeed;
public float launchTime;
public Transform dronesUnchild;
private List<GameObject> drones = new List<GameObject>();
private float currentDroneSpeed;
private void Awake()
{
currentDroneSpeed = movementSpeed;
}
// Start is called before the first frame update
void Start()
{
target = GameObject.Find("Base");
drones = GameObject.FindGameObjectsWithTag("Drone").ToList();
StartCoroutine(MoveDrone());
}
// Update is called once per frame
void Update()
{
if(currentDroneSpeed != movementSpeed)
{
for(int i = 0; i < drones.Count; i++)
{
var droneControl = drones[i].GetComponent<DroneControl>();
droneControl.movingSpeed = movementSpeed;
}
currentDroneSpeed = movementSpeed;
}
}
private IEnumerator MoveDrone()
{
// same as you did:
drones = GameObject.FindGameObjectsWithTag("Drone").ToList();
foreach(var drone in drones)
{
drone.GetComponent<DroneControl>().target = target.transform;
}
while (drones.Count > 0)
{
// pick one at random, get it
int index = Random.Range(0, drones.Count);
var drone = drones[index];
// remove it from list
drones.RemoveAt(index);
// TODO: might want to check/guard if drone == null ... this guards against it
// being Destroy()ed and yet still lying around in our list marked as "dead"
// simplified your get-component-and-go-if-not-already-going code here
var droneControl = drone.GetComponent<DroneControl>();
if (droneControl.go == false)
{
droneControl.movingSpeed = movementSpeed;
droneControl.go = true;
drone.transform.parent = dronesUnchild;
}
// wait
yield return new WaitForSeconds(launchTime);
}
}
}

我试图在更新中添加此部分

void Update()
{
if(currentDroneSpeed != movementSpeed)
{
for(int i = 0; i < drones.Count; i++)
{
var droneControl = drones[i].GetComponent<DroneControl>();
droneControl.movingSpeed = movementSpeed;
}
currentDroneSpeed = movementSpeed;
}
}

并且该脚本被附加到每个移动对象

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class DroneControl : MonoBehaviour
{
public Transform target;
public float turnSpeed = .01f;
Quaternion rotGoal;
Vector3 direction;
public float movingSpeed;
public bool go = false;
private bool waitBeforeRotate = false;
private bool startRotating = false;
#region AddedCode
public float targetRange = 1.0f;
private bool IsTargetReached(Vector3 dronePos, Vector3 targetPos)
{
var distance = Vector3.Distance(dronePos, targetPos);
return distance < targetRange;
}
#endregion AddedCode
// Update is called once per frame
void Update()
{
// next line is modified to incorporate the range check
if (go && !IsTargetReached(transform.position, target.position))
{
transform.position += transform.forward * movingSpeed * Time.deltaTime;
if (waitBeforeRotate == false)
{
StartCoroutine(StartRotating());
waitBeforeRotate = true;
}
if (startRotating)
{
direction = (target.position - transform.position).normalized;
rotGoal = Quaternion.LookRotation(direction);
transform.rotation = Quaternion.Slerp(transform.rotation, rotGoal, turnSpeed);
}
}
}
IEnumerator StartRotating()
{
yield return new WaitForSeconds(3f);
startRotating = true;
}
}

但它永远不会改变移动物体的速度。

例如，如果编辑器启动中每个移动对象的速度是5，并且在管理器脚本中我将速度更改为100，则每个对象的速度仍然是5。

Answer 1

可能发生这种情况是因为在IEnumerator中随机挑选一架无人机后，您会立即将其从列表中删除？

因此，在Update((中，您为所有无人机设置了速度，除了那些已经在移动的无人机。