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

public class CarController : MonoBehaviour {

    float speed = 0;
    Vector2 startPos;

    void Start() {
    }

    void Update() {

        //(新增)取得滑動長度
        if(Input.GetMouseButtonDown(0)) {
            //點擊滑鼠時的座標
            this.startPos = Input.mousePosition;
        } else if(Input.GetMouseButtonUp(0)) {
            //放開滑鼠時的座標
            Vector2 endPos = Input.mousePosition;
            float swipeLength = endPos.x - this.startPos.x;

            //把滑動長度轉換成初始移動速度
            this.speed = swipeLength / 500.0f;
        }

        transform.Translate(this.speed, 0, 0);
        this.speed *= 0.98f;
    }
}