从零开始的类银河恶魔城游戏06

[自学]从零开始的类银河恶魔城游戏06

part 6：Dash State 2025/2/18

(Player.cs)

变量

    public float dashSpeed = 10f;
    public float dashDuration = 0.5f;

新增状态

  public PlayerDashState dashState { get; private set; }

(PlayerState.cs)

定时器

//PlayerState.cs
   
    public float stateTimer;  //
   
    public virtual void Update()
    {
        Debug.Log("I'm in " + animBoolName);

        stateTimer -= Time.deltaTime;   //定时器自减

        xInput = Input.GetAxisRaw("Horizontal");
        player.anim.SetFloat("yVelocity", rb.velocity.y);
    }
//PlayerDashState.cs

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

public class PlayerDashState : PlayerState
{
    public PlayerDashState(Player _player, PlayerStateMachine _stateMachine, string _animBoolName) : base(_player, _stateMachine, _animBoolName)
    {
    }

    public override void Enter()
    {
        base.Enter();
        stateTimer = player.dashDuration;   // 定时器设置为冲刺持续时间dashduration
    }

    public override void Exit()
    {
        base.Exit();
    }

    public override void Update()
    {
        base.Update();
        player.SetVelocity(player.dashSpeed * player.facingDir, rb.velocity.y); //设置冲刺速度

        if(stateTimer < 0 )
        {
            stateMachine.ChangeState(player.idleState);
        }
    }
}
//PlayerGroundedState.cs

    public override void Update()
    {
        base.Update();
  
        if (Input.GetKeyDown(KeyCode.LeftShift))  //
        {
            stateMachine.ChangeState(player.dashState);
        }

        if (Input.GetKeyDown(KeyCode.Space) && player.IsGroundedDetected())
        {
            stateMachine.ChangeState(player.jumpState);
        }
    }
}

遇到的问题

animation

帧采样（Samples）：右边三个点展开可以开启这个选项

此功能改动过的文件 的完整代码：

Player.cs

using System.Collections;
using System.Collections.Generic;
using UnityEditor.Callbacks;
using UnityEngine;

public class Player: MonoBehaviour
{
    [Header("Move info")]
    public float moveSpeed = 8f;
    public float jumpForce = 15f;

    public float dashSpeed = 10f;
    public float dashDuration = 0.5f;

    [Header("Collision info")]
    [SerializeField]private Transform groundCheck;
    [SerializeField]private float groundCheckDistance;
    [SerializeField]private Transform wallCheck;
    [SerializeField]private float wallCheckDistance;
    [SerializeField]private LayerMask whatIsGround;
    [SerializeField]private LayerMask whatIsWall;

    public int facingDir {get; private set;} = 1;
    private bool facingRight = true;



    #region Components
    public Animator anim { get; private set; }
    public Rigidbody2D rb { get; private set; }

    #endregion


    #region States
    public PlayerStateMachine stateMachine { get; private set; }

    public PlayerIdleState idleState { get; private set; }
    public PlayerMoveState moveState { get; private set; }
    public PlayerJumpState jumpState { get; private set; }
    public PlayerAirState airState { get;private set; }
    public PlayerDashState dashState { get; private set; }


    #endregion

    private void Awake()
    {
        stateMachine = new PlayerStateMachine();

        idleState = new PlayerIdleState(this,stateMachine,"Idle");
        moveState = new PlayerMoveState(this,stateMachine,"Move");
        jumpState = new PlayerJumpState(this,stateMachine,"Jump");
        airState = new PlayerAirState(this,stateMachine, "Jump");
        dashState = new PlayerDashState(this,stateMachine,"Dash");
    }

    public void Start()
    {
        anim = GetComponentInChildren<Animator>();
        rb = GetComponent<Rigidbody2D>();
        stateMachine.Initialize(idleState);// PlayerStateMachine.Initialize()
    }

    public void Update()
    {
        stateMachine.currentState.Update();// PlayerState.Update()
        
    }

//设置速度
    public void SetVelocity(float _xVelocity, float _yVelocity)
    {
        rb.velocity = new Vector2(_xVelocity,_yVelocity);
        FlipController(_xVelocity);
    }

//地面检测
//Physics2D.RayCast(起始点，方向，距离，检测层)
    public bool IsGroundedDetected() => Physics2D.Raycast(groundCheck.position,Vector2.down,groundCheckDistance,whatIsGround);

//画碰撞检测射线
    private void OnDrawGizmos()
    {
        //Gizmos.DrawLine(起始点，终点（x,y-距离）)
        //右上+，左下-
        Gizmos.DrawLine(groundCheck.position,new Vector3(groundCheck.position.x,groundCheck.position.y-groundCheckDistance));
        Gizmos.DrawLine(wallCheck.position,new Vector3(wallCheck.position.x+wallCheckDistance,wallCheck.position.y));
    }

    private void Flip()
    {
        facingRight = !facingRight;
        facingDir *= -1;
        transform.Rotate(0,180,0);//y轴180度翻转
    }

    private void FlipController(float _x)
    {
        if(_x > 0 && !facingRight)
        {
            Flip();
        }
        else if(_x < 0 && facingRight)
        {
            Flip();
        }
    }

}

PlayerState.cs

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

public class PlayerState
{
    protected PlayerStateMachine stateMachine;
    protected Player player;
    protected Rigidbody2D rb;
    protected float xInput;

    private string animBoolName;

    public float stateTimer;

    public PlayerState(Player _player, PlayerStateMachine _stateMachine, string _animBoolName)
    {
        this.player = _player;
        this.stateMachine = _stateMachine;
        this.animBoolName = _animBoolName;
    }

    public virtual void Enter()
    {
        player.anim.SetBool(animBoolName, true);
        rb = player.rb;
    }

    public virtual void Update()
    {
        Debug.Log("I'm in " + animBoolName);

        stateTimer -= Time.deltaTime;   //定时器自减

        xInput = Input.GetAxisRaw("Horizontal");
        player.anim.SetFloat("yVelocity", rb.velocity.y);
    }

    public virtual void Exit()
    {
        player.anim.SetBool(animBoolName, false);
    }

}

PlayerDashState.cs 如上

PlayerGroundedState.cs

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

public class PlayerGroundedState : PlayerState
{
    public PlayerGroundedState(Player _player, PlayerStateMachine _stateMachine, string _animBoolName) : base(_player, _stateMachine, _animBoolName)
    {
    }

    public override void Enter()
    {
        base.Enter();
    }

    public override void Exit()
    {
        base.Exit();
    }

    public override void Update()
    {
        base.Update();

        if (Input.GetKeyDown(KeyCode.LeftShift))
        {
            stateMachine.ChangeState(player.dashState);
        }
        if (Input.GetKeyDown(KeyCode.Space) && player.IsGroundedDetected())
        {
            stateMachine.ChangeState(player.jumpState);
        }
    }
}