拖动游戏对象

Question

我正在使用下面的脚本在固定区域内拖动游戏对象 up/down 和 left/right，这在编辑器和移动设备上运行良好，但由于某些原因我似乎无法使用速度变量减慢速度。知道我该怎么做吗？我希望能够控制拖动对象的速度。

using UnityEngine;
using System.Collections;

public class drag : MonoBehaviour {

public float maxXValue = 9f;

Vector3 dist;
float posX;
float posY;


void OnMouseDown(){
    dist = Camera.main.WorldToScreenPoint(transform.position);
    posX = Input.mousePosition.x - dist.x;
    posY = Input.mousePosition.y - dist.y;
}

void OnMouseDrag(){

    Vector3 curPos = new Vector3(Input.mousePosition.x - posX, Input.mousePosition.y - posY, dist.z);  
    Vector3 worldPos = Camera.main.ScreenToWorldPoint(curPos);

    if (GameManager.instance.gameStart == false) {
        worldPos.x = Mathf.Clamp (worldPos.x, -5f, 5f);
        worldPos.y = Mathf.Clamp (worldPos.y, -13.2f, -13.2f);
    } else {
        worldPos.x = Mathf.Clamp (worldPos.x, -maxXValue, maxXValue);
        worldPos.y = Mathf.Clamp (worldPos.y, -17.2f, -13.2f);
    }

    transform.position = worldPos;
}
}

Answer 1

您可以采用速度变量和 Lerp transform.position。改变速度变量将改变拖动速度。像这样：

using UnityEngine;
using System.Collections;

public class drag : MonoBehaviour {
    public bool gameStart = false;
    public float maxXValue = 9f;
    public float speed = 1.0f;
    Vector3 dist;
    float posX;
    float posY;


    void OnMouseDown(){
        dist = Camera.main.WorldToScreenPoint(transform.position);
        posX = Input.mousePosition.x - dist.x;
        posY = Input.mousePosition.y - dist.y;
    }

    void OnMouseDrag(){

        Vector3 curPos = new Vector3(Input.mousePosition.x - posX, Input.mousePosition.y - posY, dist.z);  
        Vector3 worldPos = Camera.main.ScreenToWorldPoint(curPos);

        if (gameStart == false) {
            worldPos.x = Mathf.Clamp (worldPos.x, -5f, 5f);
            worldPos.y = Mathf.Clamp (worldPos.y, -13.2f, -13.2f);
        } else {
            worldPos.x = Mathf.Clamp (worldPos.x, -maxXValue, maxXValue);
            worldPos.y = Mathf.Clamp (worldPos.y, -17.2f, -13.2f);
        }

        //transform.position = worldPos;
        transform.position = Vector3.Lerp(transform.position,worldPos,speed*Time.deltaTime);
    }
}

拖动游戏对象

Dragging GameObject

c#

mobile

drag

unity3d