C＃-在鼠标拖动时，游戏对象在单个轴上跟随鼠标。 2D

Question

I'm trying to create a 2d game and the game objects should follow the mouse on a single axis (the x axis), when the user drags the object.

1. Starting Point

2. When i moved that shouldnt go up or down.

Here's my code, the problem is, the game object is following the mouse everywhere i drag.

using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;

public class Draggable : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler {

    public void OnBeginDrag(PointerEventData eventData)
    {
        Debug.Log("OnBeginDrag");
    }

    public void OnDrag(PointerEventData eventData)
    {
        Debug.Log("OnDrag");

        this.transform.position = eventData.position;
    }

    public void OnEndDrag(PointerEventData eventData)
    {
        Debug.Log("OnEndDrag");
    }
}

Answer 1

You are currently changing all axis(x,y,z) with this.transform.position = eventData.position; . Only change the x-axis. Use eventData.position.x only.

public void OnDrag(PointerEventData eventData)
{
    Debug.Log("OnDrag");
    Vector3 tempPos = this.transform.position;
    tempPos.x = eventData.position.x;
    this.transform.position = tempPos;
}