触摸“统一2D”按钮时更改玩家的精灵

Question

我想在一个场景中改变玩家的精灵。我有一个脚本，可以管理当您从一个播放器切换到另一个播放器时，哪个脚本被激活。我想增加一个功能，当切换不活跃的玩家变得黑白，锻造一个精灵和活跃的玩家对有色的雪碧。谁能帮上忙，因为第一位玩家和第二位玩家GameObject上没有改变精灵？

以下是代码：

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

public class switchCharacter : MonoBehaviour {

    public GameObject Psyco1;
    public GameObject Psyco2;
    public PlayerControllerPsyco1 script1;
    public PlayerControllerPsyco2 script2;
    public Sprite sprite1; // Psyco1 color
    public Sprite sprite2; // Psyco2 decolorized
    public SpriteRenderer spriteRendererPsyco1; 
    public SpriteRenderer spriteRendererPsyco2; 

    void  Start (){
        script1 = Psyco1.GetComponent<PlayerControllerPsyco1>();
        script2 = Psyco2.GetComponent<PlayerControllerPsyco2>();
        script1.enabled = true;
        script2.enabled = false;
        spriteRendererPsyco1 = GetComponent<SpriteRenderer>();
        spriteRendererPsyco2 = GetComponent<SpriteRenderer>();
        if (spriteRendererPsyco1.sprite == null) // if the sprite on spriteRenderer is null then
            spriteRendererPsyco1.sprite = sprite1; // set the sprite to Psyco1 Color
    }

    void  Update (){
        if (Input.GetButtonDown("switch1")){
            script1.enabled = !script1.enabled;
            script2.enabled = !script2.enabled;
            //spriteRendererPsyco1.sprite = sprite2;
            DesaturizePsyco (); // call method to change Psyco sprite
        }
    }

    public void changeCharacterBtn() {
        if (script1.enabled = !script1.enabled) // if the spriteRenderer sprite = sprite1 then change to sprite2
        {
            GameObject.Find ("PlayerFirst").GetComponent<SpriteRenderer> ().sprite = sprite2;
        }
        //script1.enabled = !script1.enabled;
        if (script2.enabled = !script2.enabled;) // if the spriteRenderer sprite = sprite1 then change to sprite2
        {
            GameObject.Find ("PlayerSecond").GetComponent<SpriteRenderer> ().sprite = sprite1;
        }
        //script2.enabled = !script2.enabled;
        DesaturizePsyco ();

    }

    void DesaturizePsyco ()
    {
        if (spriteRendererPsyco1.sprite == sprite1) // if the spriteRenderer sprite = sprite1 then change to sprite2
        {
            GameObject.Find ("PlayerFirst").GetComponent<SpriteRenderer> ().sprite = sprite2;
        }
        else
        {
            spriteRendererPsyco1.sprite = sprite1; // otherwise change it back to sprite1
        }
    }

}

Answer 1

首先，尝试始终发布一个最小化的剥离脚本:在这里，changeCharacterBtn()方法是没有用的(我已经建议对您的帖子进行编辑)。此外，在if (script2.enabled = !script2.enabled;)中也有一个错误。此外，我猜您的代码在播放时会抛出错误:您检查控制台了吗？

关于您的脚本，下面是我看到的错误：

• spriteRendererPsyco1 = GetComponent<SpriteRenderer>();而不是spriteRendererPsyco1 = Psyco1.GetComponent<SpriteRenderer>(); (Psyco2也是一样)
• script1、script2、spriteRendererPsyco1和spriteRendererPsyco2应该设置为私有，因为您在Start()中引用了它们(不需要它们出现在检查器上)

下面是您的脚本的更正版本：

public class switchCharacter : MonoBehaviour
{
    public GameObject Psyco1;
    public GameObject Psyco2;
    private PlayerControllerPsyco1 script1;
    private PlayerControllerPsyco1 script2;
    public Sprite sprite1; // Psyco1 color
    public Sprite sprite2; // Psyco2 decolorized
    private SpriteRenderer spriteRendererPsyco1;
    private SpriteRenderer spriteRendererPsyco2;

    void Start()
    {
        script1 = Psyco1.GetComponent<PlayerControllerPsyco1>();
        script2 = Psyco2.GetComponent<PlayerControllerPsyco1>();
        script1.enabled = true;
        script2.enabled = false;
        spriteRendererPsyco1 = Psyco1.GetComponent<SpriteRenderer>();
        spriteRendererPsyco2 = Psyco2.GetComponent<SpriteRenderer>();
        if(spriteRendererPsyco1.sprite == null) // if the sprite on spriteRenderer is null then
            spriteRendererPsyco1.sprite = sprite1; // set the sprite to Psyco1 Color
    }

    void Update()
    {
        if(Input.GetButtonDown("switch1"))
        {
            script1.enabled = !script1.enabled;
            script2.enabled = !script2.enabled;
            //spriteRendererPsyco1.sprite = sprite2;
            DesaturizePsyco(); // call method to change Psyco sprite
        }
    }

    void DesaturizePsyco()
    {
        if(spriteRendererPsyco1.sprite == sprite1) // if the spriteRenderer sprite = sprite1 then change to sprite2
        {
            GameObject.Find("PlayerFirst").GetComponent<SpriteRenderer>().sprite = sprite2;
        }
        else
        {
            spriteRendererPsyco1.sprite = sprite1; // otherwise change it back to sprite1
        }
    }
}

作为附带说明，下面是一些关于一般编程建议的内容：

• 考虑使用大写字母开始类名(这是C#中的一般惯例)
• 使用Sprites比较来确定哪个播放器当前运行可能不是最健壮的方法(也许可以考虑使用bool变量)
• 始终尽量保持代码的整洁(不使用双空格，是否使用大写字母保持相同的命名约定：Psyco1但script1，.)

希望这能帮上忙