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使用触摸位置沿Y轴移动玩家

unity3d-2dtools android c#

JGrn84 · 技术社区 · 9 年前

当屏幕被点击到屏幕被点击的位置时,我试图移动一个播放器,但只能沿着Y轴移动。我已经试过了:

Vector2 touchPosition;
        [SerializeField] float speed = 1f;   

void Update() {

            for (var i = 0; i < Input.touchCount; i++) {

                if (Input.GetTouch(i).phase == TouchPhase.Began) {

                    // assign new position to where finger was pressed
                    transform.position = new Vector3 (transform.position.x, Input.GetTouch(i).position.y, transform.position.z);

                }
            }    
        }

但玩家消失而不是移动。我做错了什么?

1 回复 | 直到 9 年前

Motonstron 9 年前

您需要将触摸位置从“屏幕”转换为“世界”。这很容易做到,我刚刚完成了这个快速脚本,希望它有帮助:

using UnityEngine;
using System.Collections;

public class TouchSomething : MonoBehaviour 
{
    public GameObject thingToMove;

    public float smooth = 2;

    private Vector3 _endPosition;

    private Vector3 _startPosition;

    private void Awake()
    {
        _startPosition = thingToMove.transform.position;
    }

    private void Update()
    {
        if(Application.platform == RuntimePlatform.Android || Application.platform == RuntimePlatform.IPhonePlayer)
        {
            _endPosition = HandleTouchInput();
        }
        else
        {
            _endPosition = HandleMouseInput();
        }

        thingToMove.transform.position = Vector3.Lerp(thingToMove.transform.position, new Vector3(_endPosition.x, _endPosition.y, 0), Time.deltaTime * smooth);
    }

    private Vector3 HandleTouchInput()
    {
        for (var i = 0; i < Input.touchCount; i++) 
        {
            if (Input.GetTouch(i).phase == TouchPhase.Began) 
            {
                var screenPosition = Input.GetTouch(i).position;
                _startPosition = Camera.main.ScreenToWorldPoint(screenPosition);
            }
        }

        return _startPosition;
    }

    private Vector3 HandleMouseInput()
    {
        if(Input.GetMouseButtonDown(0))
        {
            var screenPosition = Input.mousePosition;
            _startPosition = Camera.main.ScreenToWorldPoint(screenPosition);
        }

        return _startPosition;
    }
}