Question

我是Unity 3D的新手，并且正在关注Udemy教程以学习该平台。我在课程中开发了一款游戏GoHippoGo，其中河马的图像在屏幕周围移动到触摸点。

虽然当我尝试使用帆布和面板等...以使游戏适合所有屏幕尺寸时，河马停止移动！触摸时它只会从屏幕上掉下来（太慢了），而不是移动到触摸点。

我尝试在互联网上搜索，甚至是团结论坛，但找不到解决方案。我的错误可能非常明显，但由于我是新手，请合作：P

谢谢

这是我的画布的截图：

这是我的MoveHippo脚本：

using UnityEngine;
using System.Collections;

public class MoveHippo : MonoBehaviour {

    private float lastTouchTime, currentTouchTime;

    public float velocityVal;
    public float torqueVal;
    public float thresholdTime;


    void Awake() {
        velocityVal = 8.0f;
        torqueVal = 200.0f;
        thresholdTime = 0.3f;
    }

    void Update () {

    #if UNITY_ANDROID
        moveHippoAndroid ();
    #endif

    #if UNITY_EDITOR
        moveHippo();
    #endif  
    }

    void moveHippo() { //For testing only in your COMPUTER
        Vector3 currentPos, touchedPos, distanceVec;
        if (Input.GetMouseButtonDown(0)) {
            startRotatingHippoAndStopIt();
        }

        else if (Input.GetMouseButtonUp(0)) {
            currentPos = Camera.main.WorldToScreenPoint (transform.position);
            touchedPos = Input.mousePosition;
            distanceVec = (touchedPos - currentPos).normalized;
            stopRotatingHippoAndMoveIt(distanceVec, velocityVal);
        }
    }

    void moveHippoAndroid() { 
        Vector3 currentPos, touchedPos, distanceVec;        
        for (int i = 0; i < Input.touches.Length; i++) {
            Touch touch = Input.GetTouch(i);
            currentPos = Camera.main.WorldToScreenPoint(transform.position);
            touchedPos = touch.position;
            distanceVec = (touchedPos - currentPos).normalized;
            if (Input.GetTouch(0).phase == TouchPhase.Began) {
                startRotatingHippoAndStopIt();
            } else if (Input.GetTouch(0).phase == TouchPhase.Ended){
                currentTouchTime = Time.time;
                if (currentTouchTime - lastTouchTime > thresholdTime) { //No Double Touch detected ...
                    lastTouchTime = Time.time;
                    stopRotatingHippoAndMoveIt(distanceVec, velocityVal);
                } else if (currentTouchTime - lastTouchTime < thresholdTime){ //Double Touch detected!
                    lastTouchTime = Time.time;
                    stopRotatingHippoAndMoveIt(distanceVec, velocityVal*2.0f);
                }
            }
        }
    }

    void startRotatingHippoAndStopIt() {
        // We rorate the hippo...
        GetComponent<Rigidbody2D>().fixedAngle = false;
        GetComponent<Rigidbody2D>().AddTorque(torqueVal);

        // ... and stop it
        GetComponent<Rigidbody2D>().velocity=Vector2.zero;
    }

    void stopRotatingHippoAndMoveIt(Vector3 distanceVec, float velocity) {
        // We stop rotating the hippo...
        Quaternion hippoQuatern = new Quaternion();
        hippoQuatern.eulerAngles = new Vector3(0,0,0);
        GetComponent<Rigidbody2D>().fixedAngle = true;
        GetComponent<Rigidbody2D>().transform.rotation = hippoQuatern;

        // ... and move it.
        GetComponent<Rigidbody2D>().velocity = distanceVec*velocity;
    }

}

Answer 1

尝试使用(RectTransform)transform.position或GetComponent<RectTransform>().position（或简称为transform.position，但我想记住我正在处理 RectTransform 而不是标准< strong>转换）而不是Camera.main.WorldToScreenPoint(transform.position)：因为画布设置为屏幕空间 - 叠加， RectTransform的全局位置组件将以像素坐标返回X，Y，Z值。

如果您的屏幕是800x600并且您的对象居中，GetComponent<RectTransform>().position将返回（400.0f，300.0f，0.0f）。

将canvas中的GameObject移动到touchpoint

1 个答案: