【发布时间】：2017-06-18 21:49:22
【问题描述】：
在我的Unity C# Android 游戏中，我想检测最接近角色的游戏对象何时是我正在寻找的对象（左），并且，如果游戏玩家没有在屏幕上向左滑动（swipeLeft )，我想在我的代码中更改一个名为strike 的值。但它不能正常工作。
当我在游戏视图中时，leftSwipe 值并非每次都有效（当 if 函数被删除时它会起作用）并且罢工根本不会改变。我想知道如何解决这个问题，或者是否有其他方法可以解决这个问题。
这是if 声明：
if ((closestPlatform = left) && (leftSwipe = false)) { strike = 1; }
这是整个C# 脚本：
using UnityEngine;
using System.Collections;
public class SwipeChecker : MonoBehaviour
{
public float maxTime;
public float minSwipeDistance;
float startTime;
float endTime;
Vector3 startPos;
Vector3 endPos;
float swipeDistance;
float swipeTime;
public float swipeScore;
public GameObject left;
public GameObject right;
public GameObject up;
public GameObject down;
public GameObject swipeChecker;
public GameObject[] platforms = new GameObject[5];
public bool leftSwipe;
public bool didntSwipe;
public float strike;
public GameObject closestPlatform;
// Use this for initialization
public GameObject FindClosestPlatform()
{
GameObject[] gos;
GameObject[] gos2;
GameObject[] gos3;
GameObject[] gos4;
gos = GameObject.FindGameObjectsWithTag("platform");
GameObject closest = null;
float distance = Mathf.Infinity;
Vector3 position = transform.position;
foreach (GameObject go in gos)
{
Vector3 diff = go.transform.position - position;
float curDistance = diff.sqrMagnitude;
if (curDistance < distance)
{
closest = go;
distance = curDistance;
}
}
return closest;
}
public IEnumerator wait()
{
leftSwipe = true;
yield return new WaitForSeconds(0.5f);
leftSwipe = false;
}
void Start()
{
}
// Update is called once per frame
void Update()
{
closestPlatform = FindClosestPlatform();
if ((closestPlatform = left) && (leftSwipe = false))
{
strike = 1;
}
if (Input.touchCount > 0)
{
Touch touch = Input.GetTouch(0);
if (touch.phase == TouchPhase.Began)
{
startTime = Time.time;
startPos = touch.position;
}
else if (touch.phase == TouchPhase.Ended)
{
endTime = Time.time;
endPos = touch.position;
swipeDistance = (endPos - startPos).magnitude;
swipeTime = endTime - startTime;
if (swipeTime < maxTime && swipeDistance > minSwipeDistance)
{
swipe();
}
}
}
}
void swipe()
{
Vector2 distance = endPos - startPos;
if (Mathf.Abs(distance.x) > Mathf.Abs(distance.y))
{
Debug.Log("Horizontal Swipe");
if (distance.x > 0)
{
Debug.Log("Right Swipe");
}
if (distance.x < 0)
{
Debug.Log("Left Swipe");
StartCoroutine(wait());
}
}
else if (Mathf.Abs(distance.x) < Mathf.Abs(distance.y))
{
Debug.Log("Vertical Swipe");
if (distance.y > 0)
{
Debug.Log("Up Swipe");
}
if (distance.y < 0)
{
Debug.Log("Down Swipe");
}
}
}
}
【问题讨论】：
-
在 C# 中，使用公共字段通常被认为是不好的做法。所有这些字段都应标记为
private。要使它们出现在统一检查器中，请在它们上放置[SerializeField]属性。如果您需要在类之外访问它们中的任何一个，请将它们包装在 property 中。这样，如果您需要在修改属性时发生某些事情，则可以轻松进行更改，而无需在整个项目中更改代码。
标签： c# if-statement unity3d swipe