根据按钮单击更改雷达图像

Question

我可以帮忙。我有一个显示物体的雷达。我正在尝试引入雷达扫描功能，以便在单击按钮时，雷达上的图像会根据对象的标签进行更新。我的代码没有错误，但我无法让它工作，并希望这里有人能发现问题所在。谢谢！！！！

雷达扫描脚本

public class RadarScan : MonoBehaviour {

public Image RadarImageToChange;

public void ChangeImage(Image UpdateImage)
{
    if(gameObject.tag == "Enemy")
    {
        UpdateImage = RadarImageToChange;
    }

}

雷达脚本

public class RadarObject
{
    public Image icon { get; set; }
    public GameObject owner { get; set; }
}

public class Radar : MonoBehaviour {

public Transform playerPos; //position of player
float mapScale = 0.1f; //scale radar size

public static List<RadarObject> radObjects = new List<RadarObject>();

//Registers Object to the radar
public static void RegisterRadarObject(GameObject o, Image i)
{
    Image image = Instantiate(i);
    radObjects.Add(new RadarObject() { owner = o, icon = image }); //adds to List
}

//It loops through the list looking for the owner existing in the list, when it finds the owner is detroys the icon
public static void RemoveRadarObject(GameObject o)
{
    //New list for destroyed objects
    List<RadarObject> newList = new List<RadarObject>();
    for (int i = 0; i < radObjects.Count; i++)
    {
        if (radObjects[i].owner == o)
        {
            Destroy(radObjects[i].icon);
            continue;
        }
         else
            newList.Add(radObjects[i]);
        }
    radObjects.RemoveRange(0, radObjects.Count);
    radObjects.AddRange(newList);
}


void DrawRadarDots()
{
    //loops through the list and for each Object it gets the owners transform position and determins the difference between it's
    //position and the players position, does calculations on the angle and distance and position on a circle using polar equations.
    foreach (RadarObject ro in radObjects)
    {
        Vector3 radarPos = (ro.owner.transform.position - playerPos.position);
        float distToObject = Vector3.Distance(playerPos.position, ro.owner.transform.position) * mapScale;
        float deltay = Mathf.Atan2(radarPos.x, radarPos.z) * Mathf.Rad2Deg - 270 - playerPos.eulerAngles.y;
        radarPos.x = distToObject * Mathf.Cos(deltay * Mathf.Deg2Rad) * -1;
        radarPos.z = distToObject * Mathf.Sin(deltay * Mathf.Deg2Rad);

        //grabs icon of players objects and make it a child of panel and set it's postion based on radarPos.x and radarPos.z
        ro.icon.transform.SetParent(this.transform);
        ro.icon.transform.position = new Vector3(radarPos.x, radarPos.z, 0) + this.transform.position;
    }
}

    //Update is called once per frame
    void Update ()
    {
        DrawRadarDots();
    }

}

MakeRadarObject 脚本

public class MakeRadarObject : MonoBehaviour {

public Image image;

// Use this for initialization
void Start () {
    Radar.RegisterRadarObject(this.gameObject, image);
}

void OnDestroy()
{
    Radar.RemoveRadarObject(this.gameObject); 
}

}

Answer 1

您没有将图像应用到您的游戏对象，而只是应用到一个名为 UpdateImage 的变量。您需要获取游戏对象的图像组件，然后将新图像分配给它。您还需要将 Image 更改为 Sprite 的形式才能正常工作。

public Sprite RadarImageToChange;

public void ChangeImage(Sprite UpdateImage)
{
        if(gameObject.tag == "Enemy")
        {
            gameObject.GetComponent<Image>().sprite = RadarImageToChange;
        }
}