交换盒子的位置？

Question

我从 Unity 开始，想从一些概念入手。基本上我想做的是：如果我点击屏幕右侧，切换蓝色和黄色框的位置，如果我随后点击屏幕右侧，则切换黄色框和红色框。我已经为屏幕的左侧和右侧设置了画布。我需要做什么？

[编辑]：我遇到的错误可以在图片中看到。我不确定我是否应该使用不同的方法来解决这个问题。任何建议将不胜感激！

Switching positions of boxes error

Answer 1

将此添加到按钮并设置对象引用：

using UnityEngine;
using UnityEngine.UI;

[RequireComponent(typeof(Button))]
public class SwapObjectPositions : MonoBehaviour {

public Transform transformA;
public Transform transformB;

    void Start () {
        GetComponent<Button>().onClick.AddListener(SwapPositions);
    }

    public void SwapPositions()
    {
        if (transformA==null || transformB==null) 
        {
            Debug.Log("Set object references in the inspector please"); 
            return;
        }
        Vector3 posA=transformA.position;
        transformA.position=transformB.position;
        transformB.position=posA;
    }
}

Answer 2

问题是您有 3 个可以切换位置的框，而不仅仅是两个。第一次交换后顺序改变。你必须做这样的事情：

using UnityEngine;
using UnityEngine.UI;

[RequireComponent(typeof(Button))]
public class SwapObjectPositions : MonoBehaviour
{
public Transform[] boxTransform;
public Button LeftButton;
public Button RightButton;

void Start()
{
    if (LeftButton == null || RightButton == null)
    {
        Debug.Log("Button reference missing");
    }
    LeftButton.onClick.AddListener(LeftSwap);
    RightButton.onClick.AddListener(RightSwap);
    if (boxTransform.Length != 3 || boxTransform[0] == null || boxTransform[1] == null || boxTransform[2] == null)
    {
        Debug.Log("Boxes reference missing");
    }
}

public void LeftSwap()
{
    // Swap Positions
    Vector3 tempPosition = boxTransform[0].position;
    boxTransform[0].position = boxTransform[1].position;
    boxTransform[1].position = tempPosition;
    // Swap Transform
    Transform tempTransform = boxTransform[0];
    boxTransform[0] = boxTransform[1];
    boxTransform[1] = tempTransform;
}

public void RightSwap()
{
    // Swap Positions
    Vector3 tempPosition = boxTransform[1].position;
    boxTransform[1].position = boxTransform[2].position;
    boxTransform[2].position = tempPosition;
    // Swap Transform
    Transform tempTransform = boxTransform[1];
    boxTransform[1] = boxTransform[2];
    boxTransform[2] = tempTransform;
}
}