基本的c# Unity2D移动脚本不工作

Question

大家好!我最近在Unity中钻研c#，因为我相信它比UnityScript有更多的功能，而且我有c++背景。参考一些代码从一个2D脚本在样本资产，我已经尝试创建自己的。代码如下:

    using UnityEngine;
public class PlayerControl : MonoBehaviour {
//Variables
    [HideInInspector]
    public bool facingForward = true; //for Flip() Function
    bool isGround = true; //for Grounded() Function
    public float maxSpeed = 5.0f; //Terminal sideways velocity
    public float HorizonAxis; //Checks for a/d movement 
    public float jumpFloat = 1000.0f; //Modular, use Unity Editor
    public float moveFloat = 400.0f; // "                       "
    void Start() {
        //transform.position(0,0,0);
    }
    void Flip() {
        facingForward = !facingForward; //switches boolean
        Vector3 theScale = transform.localScale; //assigns vector to localscale of Player
        theScale.x *= -1; //if x = 1, position becomes -1 and thus flips
        transform.localScale = theScale; //reassigns the localscale to update theScale
    }
    bool Grounded() {
        if (transform.position.y > 1) { //if position of gameObject is greater that 1, not grounded
            isGround = false;
        } else {
            isGround = true;
        }
        return isGround; //function returns true or false for isGround
    }
    void Update() {
        HorizonAxis = /*UnityEngine.*/Input.GetAxis ("Horizontal"); //assigns HorizonAxis to a/d movement from UnityEngine.Input
        if (HorizonAxis * rigidbody2D.velocity.x > maxSpeed) { // if Input a/d by current x velocity of gameObject is greater than maxSpeed             
        rigidbody2D.velocity = new Vector2 (Mathf.Sign (rigidbody2D.velocity.x) * maxSpeed, rigidbody2D.velocity.y); //1 or -1 times the max speed, depending on direction
    }
    else if (HorizonAxis * rigidbody2D.velocity.x < maxSpeed) { //if Input a/d is less than terminal velocity
        rigidbody2D.AddForce(Vector2.right * HorizonAxis * moveFloat); //add force to the right equivilant to Input by scalar moveFloat
    }
        if (Input.GetButtonDown ("Jump")) { //If Space
            if(isGround) { //and isGround returns true
                rigidbody2D.AddForce(new Vector2(0.0f, jumpFloat)); //add upwards force to bottom of rigidbody2D
                isGround = false; //Resets isGround value
            }
        }
        if (HorizonAxis > 0 && !facingForward) {//if UnityEngine.Input is to the right and facing left
            Flip (); //execute
        }
        else if (HorizonAxis < 0 && facingForward) { //else
                    Flip (); //execute 
        }
    }
}

不幸的是，代码不能工作。我没有得到编译错误，但是任何输入都不会影响字符的当前位置。我应该用变换吗。翻译以改变位置，或坚持与AddForce到Vector2，直到角色达到maxSpeed?

谢谢!

Answer 1

我(有点)修复了跳跃问题，基本上你在Update()函数中寻找输入，它在FixedUpdate()中切换Bool

void Update () {
    if (Input.GetKeyDown (KeyCode.Space) && playerGrounded) {
        playerJumped = true;
    }
}

然后在fixeduupdate()中我寻找这个Bool并执行AddForce

void FixedUpdate () {
    if (playerJumped) {
        playerJumped = false;
        rigidbody2D.AddForce (new Vector2 (0, jumpForce),ForceMode2D.Impulse);
        playerGrounded = false;
    }
}

将playerjump设置为false确保它不会运行多次，并且玩家不能再次跳跃，因为我还将接地设置为false。当玩家与标记为"ground"的东西碰撞时，接地将被设置为true。

我还是Unity和c#的新手，所以我不能保证这是最好的(甚至是好的)方法。希望我能有所帮助;)