Jump

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

public class Jump : MonoBehaviour {

    public float Force = 250;
    private bool isjump = false; //判断是否在跳跃
    Rigidbody rig;
	void Start () {
        rig = this.GetComponent<Rigidbody>();
	}
	
	// Update is called once per frame
	void Update () {

        Debug.Log(isjump);
        //当按下空格键且不再跳跃状态时，开始跳跃
		if(Input.GetKeyDown(KeyCode.Space) && isjump == false)
        {
            rig.AddForce(Vector3.up * Force);
            isjump = true;
        }

	}

    //当球体与地面接触时，isjump为false
    void OnCollisionEnter(Collision collision)
    {
        if(collision.collider.tag.CompareTo("Plane") == 0)
        {
            isjump = false;
        }
    }
}