c# - GetKeyDown 输入仅播放第一帧动画

Question

我正在尝试控制一组角色动画，但我在处理跳跃动画时遇到了问题。我的水平行走动画工作正常，但是当我按下跳跃按钮时，我希望播放两个跳跃动画之一，具体取决于玩家是处于空闲状态还是行走状态。但是，当我当前按下跳跃按钮时，它只播放相应跳跃动画的第一帧，然后立即返回空闲或行走状态。如何在按下跳跃按钮时播放整个跳跃动画？

using UnityEngine;
using System.Collections;

public class AsherBlackMover : MonoBehaviour {

    public float moveSpeed = 3;
    public float rotateSpeed = 10;
    public Transform graphics;
    public SkeletonAnimation skeletonAnimation;
    public Vector2 jumpVector;
    public bool isGrounded;

    // isGrounded Variables
    public Transform grounderPosition;
    public float grounderRadius;
    public LayerMask grounderLayerMask;

    private Rigidbody2D asherBlackRB;
    private Animator asherBlackAnim;

    Quaternion goalRotation = Quaternion.identity;
    float xDir;
    float yDir;
    string currentAnimation = "";

    void Start ()
    {
        // Create a reference to Asher Black Rigidbody2D
        asherBlackRB = GetComponent<Rigidbody2D>();
    }

    void Update ()
    {
        xDir = Input.GetAxis ("Horizontal") * moveSpeed;

        if (xDir > 0) // ------ Walk Right
        {
            goalRotation = Quaternion.Euler (0, 0, 0);
            SetAnimation ("Walk", true);
        } 
        else if (xDir < 0) // ------ Walk Left
        {
            goalRotation = Quaternion.Euler (0, 180, 0);
            SetAnimation ("Walk", true);
        }
        else if (isGrounded == true) // ------ Idle
        {
            SetAnimation ("Idle", true);
        }

        // Jump Button
        if (Input.GetKeyDown("space") && isGrounded == true)
        {
            isGrounded = false;

            if (xDir > 0)
            {
                Jump ("Walk-Jump");
            }
            else if (xDir < 0)
            {
                Jump ("Walk-Jump");
            }
            else
            {
                Jump ("Idle-Jump");
            }
        }

        // Circle on character that determines when grounded or not
        isGrounded = Physics2D.OverlapCircle (grounderPosition.transform.position, grounderRadius, grounderLayerMask);

        // Flip character smothly to emulate paper mario effect
        graphics.localRotation = Quaternion.Lerp (graphics.localRotation, goalRotation, rotateSpeed * Time.deltaTime);
    }

    void OnDrawGizmos ()
    {
        Gizmos.color = Color.yellow;
        Gizmos.DrawWireSphere (grounderPosition.transform.position, grounderRadius);
    }

    void SetAnimation (string name, bool loop)
    {
        if (name == currentAnimation)
        {
            return;
        }
        skeletonAnimation.state.SetAnimation (0, name, loop);
        currentAnimation = name;
    }

    void Jump (string animationName)
    {
        asherBlackRB.AddForce (jumpVector, ForceMode2D.Force);
        SetAnimation (animationName, true);
    }

    // Physics Updates
    void FixedUpdate ()
    {
        asherBlackRB.velocity = new Vector2 (xDir, asherBlackRB.velocity.y);
    }
}

Answer 1

您的跳跃动画无法正确显示，因为您总是在下一帧将其改回另一个动画。例如，空转:

else
{
    SetAnimation ("Idle", true);

    if (Input.GetKeyDown("space"))
    {
        SetAnimation ("Idle-Jump", true);
    }
}

角色空闲的每一帧，无论角色是否跳跃，都会设置空闲动画。但是，只要按住空格键，就会切换回跳跃动画的第一帧。

您可能应该有一个 bool 值来指示角色何时跳跃。每次将角色设置为跳跃动画时，您都将其设置为 true。然后你可以调整你的 if 语句，让它首先处理的是处于跳跃状态的角色，这样你的跳跃逻辑就可以在没有任何干扰的情况下完成。当角色完成跳跃后，将 bool 值设置回 false。所以，像这样:

bool jumping = false;

// User Input
void Update ()
{
    xDir = Input.GetAxis ("Horizontal") * moveSpeed;

    if (jumping)
    {
        // Process jumping here
        if (/* Check for jumping finished here */)
        {
            // Finished jumping
            jumping = false;
        }
    }
    else if (xDir > 0)
    {
        goalRotation = Quaternion.Euler (0, 0, 0);
        SetAnimation ("Walk", true);

        if (Input.GetKeyDown("space"))
        {
            SetAnimation ("Walk-Jump", true);
            jumping = true;
        }
    } 
    else if (xDir < 0)
    {
        goalRotation = Quaternion.Euler (0, 180, 0);
        SetAnimation ("Walk", true);

        if (Input.GetKeyDown("space"))
        {
            SetAnimation ("Walk-Jump", true);
            jumping = true;
        }
    }
    else
    {
        SetAnimation ("Idle", true);

        if (Input.GetKeyDown("space"))
        {
            SetAnimation ("Idle-Jump", true);
            jumping = true;
        }
    }

    graphics.localRotation = Quaternion.Lerp (graphics.localRotation, goalRotation, rotateSpeed * Time.deltaTime);
}