unity 游戏内实现3连击动画（状态机）

a.祥

3731人浏览 · 2021-12-27 14:49:16

a.祥 · 2021-12-27 14:49:16 发布

上节课讲了unity 游戏内实现3连击动画的实现，因为在游戏中我们的连击动画可能会有很多，为了避免使用较多的if else 我们这节课开始引用状态机来更好的实现效果，那么接下来我们就开始状态机的讲解！！！

首先是写一个我们管理动画的状态机

/// <summary>
/// 状态机
/// </summary>
public class ActionState
{
    public PlayerController playerc;
    /// <summary>
    /// 开始进入状态该做什么
    /// </summary>
    public virtual void Enter()
    {
        OnEnter();
    }
    /// <summary>
    /// 进入状态回调
    /// </summary>
    protected void OnEnter()
    {
        playerc.currentState = this;
        this.playerc.stateName = this.GetType().ToString();//状态名称赋值  在这里为了更好地让我们看到当前所在状态，所以在public属性面板可以看到
    }
    /// <summary>
    /// 处理玩家输入事件
    /// </summary>
    public virtual void HandleInput()
    {

    }
}

然后写我们的玩家控制脚本我们要把这个脚本挂在人物上

///玩家控制脚本
public class PlayerController : MonoBehaviour
{
    public ActionState currentState;//当前的状态
    public Attack1 attack1;
    public Attack2 attack2;
    public Attack3 attack3;
    public Attack4 attack4;
    public IdleState idleState;
    public Animator animator;
    public bool leftMouse_KeyDown;//鼠标左键
    public bool leftControl_KeyDown;//左Ctrl键
    public string stateName;//状态名称
    private AnimatorStateInfo info;//显示当前状态名
    /// <summary>
    /// 判断可不可以攻击
    /// </summary>
    /// <param name="start">开始</param>
    /// <param name="end">结束</param>
    /// <returns></returns>
    public bool CanAttack(float start, float end)
    {
        return info.normalizedTime >= start && info.normalizedTime <= end;
    }

    void Start()
    {
        animator=GetComponent<Animator>();
        idleState = new IdleState() { playerc = this };
        attack1 = new Attack1() { playerc = this };
        attack2 = new Attack2() { playerc = this };
        attack3 = new Attack3() { playerc = this };
        attack4 = new Attack4() { playerc = this };
        currentState = idleState;//默认设置当前状态为休闲状态
        currentState.Enter();//进入休闲状态
    }

    // Update is called once per frame
    void Update()
    {
        leftMouse_KeyDown = Input.GetMouseButtonDown(0);//获取鼠标左键
        leftControl_KeyDown = Input.GetKeyDown(KeyCode.LeftControl);//获取左ctrl键
        bool input_attack= leftMouse_KeyDown|| leftControl_KeyDown;//获取当前输入
        info = this.animator.GetCurrentAnimatorStateInfo(0);//获取当前状态
        if (currentState != idleState && !animator.IsInTransition(0) && info.IsName("Idle_A")) 
        {
            idleState.Enter();
        }
        if (input_attack)//判断当前输入
        {
            currentState.HandleInput();//进入
        }
    }
}

接下来我们来写我们的状态类脚本我们的Idle状态和攻击状态都要继承刚才所写的ActionState去重写我们的方法来实现状态的切换

//状态Idle
public class IdleState : ActionState
{
    public override void HandleInput()
    {
        base.HandleInput();
        if (playerc.leftMouse_KeyDown)//鼠标左键
        {
            playerc.attack1.Enter();//攻击1状态进入
        }
        else if (playerc.leftControl_KeyDown)//左Ctrl键
        {
            playerc.attack2.Enter();//攻击二状态进入
        }
    }
    public override void Enter()
    {
        base.Enter();
        playerc.animator.CrossFade("Idle_A", 0.1f);//播放idle状态
    }
}

public class Attack4 : ActionState
{
    public override void Enter()
    {
        base.Enter();
        playerc.animator.CrossFade("Atk4", 0.1f);
    }
    public override void HandleInput()
    {
        base.HandleInput();
        if (playerc.CanAttack(0.45f, 0.9f))
        {
            if (playerc.leftMouse_KeyDown)
            {
                playerc.idleState.Enter();
            }
            else if (playerc.leftControl_KeyDown)
            {
                playerc.idleState.Enter();
            }
        }
    }
}

public class Attack3 : ActionState
{
    public override void Enter()
    {
        base.Enter();
        playerc.animator.CrossFade("Atk3", 0.1f);
    }
    public override void HandleInput()
    {
        base.HandleInput();
        if (playerc.CanAttack(0.45f, 0.9f))
        {
            if (playerc.leftMouse_KeyDown)
            {
                playerc.attack4.Enter();
            }
            else if (playerc.leftControl_KeyDown)
            {
                playerc.attack1.Enter();
            }
        }
    }
}

public class Attack2 : ActionState
{
    public override void Enter()
    {
        base.Enter();
        playerc.animator.CrossFade("Atk2", 0.1f);
    }
    public override void HandleInput()
    {
        base.HandleInput();
        if (playerc.CanAttack(0.45f, 0.9f))
        {
            if (playerc.leftMouse_KeyDown)
            {
                playerc.attack3.Enter();
            }
            else if (playerc.leftControl_KeyDown)
            {
                playerc.attack4.Enter();
            }
        }
    }
}

public class Attack1 : ActionState
{
    public override void Enter()
    {
        base.Enter();
        playerc.animator.CrossFade("Atk1", 0.1f);//播放对应动画
    }
    public override void HandleInput()
    {
        base.HandleInput();
        if (playerc.CanAttack(0.45f,0.9f))
        {
            if (playerc.leftMouse_KeyDown)
            {
                playerc.attack2.Enter();
            }
            else if (playerc.leftControl_KeyDown)
            {
                playerc.attack3.Enter();
            }
        }
    }
}

在这里就不多敲注释了只要实现了一个状态我们到后边改变状态就是复制粘贴的问题了