unity C# 如何避免点击并仅通过滑动按字符移动

Question

我试图通过滑动/拖动来移动我的播放器，滑动效果很好，但是如果我点击屏幕的任何部分，它会将我的角色传送到 position。 我已经尝试过使用其他方法来移动它（如 transform.translate 或 rb.velocity），但感觉不够流畅。 所以我有点迷失为了解决它，这是我的代码：

 if (Input.GetMouseButton(0))
 {
     Vector2 curScreenPoint = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
     Vector2 curPosition = Camera.main.ScreenToWorldPoint(curScreenPoint);
     rb.MovePosition(curPosition);
 }

Answer 1

下面是你可以用来拖动/滑动播放器而不被传送的代码； 将此脚本添加到您的播放器。 这适用于任何圆 object 否则，如果您的 object 包含任何其他对撞机，则将圆形对撞机替换为所需的对撞机

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


public class DragAndDrop : MonoBehaviour {


    // touch offset allows ball not to shake when it starts moving
    float deltaX, deltaY;


    // reference to Rigidbody2D component
    Rigidbody2D rb;


    // ball movement not allowed if you touches not the ball at the first time
    bool moveAllowed = false;


    // Use this for initialization
    void Start () {


        rb = GetComponent<Rigidbody2D> ();


        // Add bouncy material tha ball
        PhysicsMaterial2D mat = new PhysicsMaterial2D ();
        mat.bounciness = 0.75f;
        mat.friction = 0.4f;
        GetComponent<CircleCollider2D> ().sharedMaterial = mat;


    }


    // Update is called once per frame
    void Update () {


        // Initiating touch event
        // if touch event takes place
        if (Input.touchCount > 0) {


        // get touch position
        Touch touch = Input.GetTouch(0);


        // obtain touch position
        Vector2 touchPos = Camera.main.ScreenToWorldPoint (touch.position);


            // get touch to take a deal with
            switch (touch.phase) {


            // if you touches the screen
            case TouchPhase.Began:


                // if you touch the ball
                if (GetComponent<Collider2D> () == Physics2D.OverlapPoint (touchPos)) {


                    // get the offset between position you touches
                    // and the center of the game object
                    deltaX = touchPos.x - transform.position.x;
                    deltaY = touchPos.y - transform.position.y;


                    // if touch begins within the ball collider
                    // then it is allowed to move
                    moveAllowed = true;


                    // restrict some rigidbody properties so it moves
                    // more  smoothly and correctly
                    rb.freezeRotation = true;
                    rb.velocity = new Vector2 (0, 0);
                    rb.gravityScale = 0;
                    GetComponent<CircleCollider2D> ().sharedMaterial = null;
                }
                break;


                // you move your finger
            case TouchPhase.Moved:
                // if you touches the ball and movement is allowed then move
                if (GetComponent<CircleCollider2D> () == Physics2D.OverlapPoint (touchPos) && moveAllowed)
                    rb.MovePosition (new Vector2 (touchPos.x - deltaX, touchPos.y - deltaY));
                break;


                // you release your finger
            case TouchPhase.Ended:


                // restore initial parameters
                // when touch is ended
                moveAllowed = false;
                rb.freezeRotation = false;
                rb.gravityScale = 2;
                PhysicsMaterial2D mat = new PhysicsMaterial2D ();
                mat.bounciness = 0.75f;
                mat.friction = 0.4f;
                GetComponent<CircleCollider2D> ().sharedMaterial = mat;
                break;
            }
        }
    }
}

注：适用于 android

Answer 2

我认为您正在通过点击的 position 设置播放器的 position。 您可以根据滑动距离将其编辑为玩家的 position 变化：

Vector2 startPosition ;
if (Input.GetMouseButtonDown(0))
{
     Vector2 curScreenPoint = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
     startPosition = Camera.main.ScreenToWorldPoint(curScreenPoint);
}

if(Input.GetMouseButton(0))
{
    Vector2 curScreenPoint = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
    curPosition = Camera.main.ScreenToWorldPoint(curScreenPoint);
    transform.position += (curPosition - startPosition);
    startPosition = curPosition;
}

我不知道代码是否正常工作，但想法是这样。

Answer 3

您可以使用自由触摸或滑动 package。 首先，您需要从资产商店中选择一个免费工具，该工具可能会分别包含滑动和点击事件。我认为这会对您有所帮助。