Unity2D - 一旦用户输入返回零但保持相同方向朝向，则停止移动方向答案

【问题标题】：Unity2D - Stop movement direction once user input returns to zero but keep same direction facingUnity2D - 一旦用户输入返回零但保持相同方向朝向，则停止移动方向
【发布时间】：2023-01-12 11:15:36
【问题描述】：

我已经忍无可忍了，我正在学习并尝试创建一个简单的角色控制器。我的动画设置正确，但我的脚本似乎让我的播放器朝最后已知的输入方向移动。

一旦用户输入返回到 0，我希望我的播放器停止一起移动，但继续面向最后一个已知方向，即向上、向下、向右或向左。只需在最后一次定向输入时冻结该动画帧即可。

但他只是一直走着。有谁可以帮助我吗？

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

public class PlayerController : MonoBehaviour
{
public float moveSpeed = 5.0f;
private Vector2 moveDirection;
private Vector2 lastMoveDirection;
private bool playerMoving;
private Rigidbody2D rb;
private Animator anim;
private static bool playerExists;

void Start()
{
    rb = GetComponent<Rigidbody2D>();
    anim = GetComponent<Animator>();

    if (!playerExists)
    {
        playerExists = true;
        DontDestroyOnLoad(transform.gameObject);
    }
    else
    {
        Destroy(gameObject);
    }

}

void Update()
{
    moveDirection = new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"));
    // Mobile controls
    if (Input.touchCount > 0)
    {
        Touch touch = Input.GetTouch(0);
        if (touch.position.x < Screen.width / 2)
            moveDirection.x = -1;
        else
            moveDirection.x = 1;

        if (touch.position.y < Screen.height / 2)
            moveDirection.y = -1;
        else
            moveDirection.y = 1;
    }
    // Limit the movement to only horizontal or vertical


    if (Mathf.Abs(moveDirection.x) > Mathf.Abs(moveDirection.y))
        moveDirection.y = 0;
    else
        moveDirection.x = 0;

    // replace moveDirection with lastMoveDirection when input is zero
    if (moveDirection == Vector2.zero) {
        moveDirection = lastMoveDirection;
    } else {
        lastMoveDirection = moveDirection;
    }

    anim.SetFloat("MoveX", moveDirection.x);
    anim.SetFloat("MoveY", moveDirection.y);
    anim.SetBool("PlayerMoving", moveDirection != Vector2.zero);

}

void FixedUpdate()
{
    rb.MovePosition(rb.position + moveDirection * moveSpeed * Time.fixedDeltaTime);
}
}

【问题讨论】：

标签： unity3d

【解决方案1】：

Opps 解决了..感谢那些看过的人。

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

public class PlayerController : MonoBehaviour
{
    public float moveSpeed = 5.0f;
    private Vector2 moveDirection;
    private Vector2 lastMoveDirection;
    private bool playerMoving;
    private Rigidbody2D rb;
    private Animator anim;
    private static bool playerExists;

    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        anim = GetComponent<Animator>();

        if (!playerExists)
        {
            playerExists = true;
            DontDestroyOnLoad(transform.gameObject);
        }
        else
        {
            Destroy(gameObject);
        }

    }

    void Update()
    {
        moveDirection = new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"));
        // Mobile controls
        if (Input.touchCount > 0)
        {
            Touch touch = Input.GetTouch(0);
            if (touch.position.x < Screen.width / 2)
                moveDirection.x = -1;
            else
                moveDirection.x = 1;

            if (touch.position.y < Screen.height / 2)
                moveDirection.y = -1;
            else
                moveDirection.y = 1;
        }
        // Limit the movement to only horizontal or vertical


        if (Mathf.Abs(moveDirection.x) > Mathf.Abs(moveDirection.y))
            moveDirection.y = 0;
        else
            moveDirection.x = 0;
        
        if (moveDirection == Vector2.zero) {
            moveDirection = lastMoveDirection;
            moveDirection = Vector2.zero;
        } else {
            lastMoveDirection = moveDirection;
        }

        anim.SetFloat("MoveX", lastMoveDirection.x);
        anim.SetFloat("MoveY", lastMoveDirection.y);
        anim.SetBool("PlayerMoving", moveDirection != Vector2.zero);

    }

    void FixedUpdate()
    {
        rb.MovePosition(rb.position + moveDirection * moveSpeed * Time.fixedDeltaTime);
    }

}

【讨论】：