平台游戏控制器之玩家失败

说明:玩家碰到尖刺或者被黑球撞到就会死亡

功能实现

尖刺碰撞

首先选中所有尖刺,为他们添加脚本Spike

using UnityEngine;
public class Spike : MonoBehaviour
{
  private void OnTriggerEnter(Collider other)
  {
    if (other.TryGetComponent(out PlayerController player))
    {//如果碰撞的是挂载PlayerController的对象
      player.OnDefeated();//游戏失败，玩家身上相关功能禁用
    }
  }
}

角色属性调整(关闭功能)

通过问题修复功能,自动在PlayerController脚本中生成**OnDefeated()**函数;

同样地,在input类中生成DisableGamePlayInputs();

public void OnDefeated()
  {//游戏失败
    input.DisableGamePlayInputs();//关闭输入
    rigidBody.velocity = Vector3.zero;//速度清零
    rigidBody.useGravity = false;//关闭重力对刚体的影响
    rigidBody.detectCollisions = false;//关闭刚体碰撞检测
    //状态机切换到失败状态
    GetComponent<StateMachine>().SwitchState(typeof(PlayerState_Defeated));
  }

DisableGamePlayInputs();只有一行代码:禁用当前输入动作表。playerInputAction.GamePlay.Disable();

小球碰撞

为球Ball添加脚本Ball,如果球撞到玩家,则执行玩家死亡游戏失败逻辑。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Ball : MonoBehaviour
{
  [SerializeField] Collider gameplayer;//获取玩家碰撞体
  [SerializeField] PlayerController player;//获取玩家控制器
  private void OnCollisionEnter(Collision other)
  {
    //Debug.Log(other.collider);
    //Debug.Log(gameplayer);
    if (other.collider == gameplayer)
    {
      player.OnDefeated();
    }
  }
}

更简便的写法:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Ball : MonoBehaviour
{
  // [SerializeField] Collider gameplayer;//获取玩家碰撞体
  // [SerializeField] PlayerController player;//获取玩家控制器
  private void OnCollisionEnter(Collision other)
  {
    if (other.gameObject.TryGetComponent(out PlayerController player))
    {
      player.OnDefeated();
    }
    // if (other.collider == gameplayer)
    // {
    //   player.OnDefeated();
    // }
  }
}

给小球加上消失功能,大约6s摧毁自身

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Ball : MonoBehaviour
{
  [SerializeField] VoidEventChannel ballTriggeredEventChannel;
  private void OnEnable()
  {
    ballTriggeredEventChannel.AddListener(EliminateBall);
  }
  private void OnDisable()
  {
    ballTriggeredEventChannel.RemoveListener(EliminateBall);
  }
  private void OnCollisionEnter(Collision other)
  {
    if (other.gameObject.TryGetComponent(out PlayerController player))
    {
      player.OnDefeated();
    }
  }
  private void EliminateBall()
  {
    Destroy(gameObject, 6f);
  }
}

对状态的操作

新建状态PlayerState_Defeated

用来玩家生成死亡时的音效、特效

using System;
using UnityEngine;
[CreateAssetMenu(menuName = "Data/StateMachine/PlayerState/Defeated", fileName = "PlayerState_Defeated")]
public class PlayerState_Defeated : PlayerState
{
  [SerializeField] ParticleSystem Deathvfx;//死亡特效
  [SerializeField] AudioClip[] voice;//音效集合
  public override void Enter()
  {
    base.Enter();
    Instantiate(Deathvfx, player.transform.position, Quaternion.identity);//生成特效
    AudioClip deathVoice = voice[UnityEngine.Random.Range(0, voice.Length)];//随机选中一个音效
    player.voicePlayer.PlayOneShot(deathVoice);//播放音效
  }
}

UI相关

新建SceneLoader脚本用来管理场景的切换，用来实现ui中按钮功能

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
public class SceneLoader
{
  public static void ReloadScene()
  {//重开
    int sceneIndex = SceneManager.GetActiveScene().buildIndex;//获取场景下标
    SceneManager.LoadScene(sceneIndex);//切换为当前场景(重进)
  }
  public static void QuitGame()
  {//退出游戏
    //如果在编辑器中运行
#if UNITY_EDITOR
    UnityEditor.EditorApplication.isPlaying = false;//判断当前是否处于游戏状态
#else
        Application.Quie();//退出应用
#endif
  }
  public static void LoadNextScene()
  {//下一关
    int sceneIndex = SceneManager.GetActiveScene().buildIndex + 1;//获取下一关场景下标
    if (sceneIndex >= SceneManager.sceneCount)
    {//如果下标大于场景总数
      ReloadScene();//返回当前关
      return;
    }
    SceneManager.LoadScene(sceneIndex);//切换为下一关
  }
}

UI中新建DefeatScreen同名脚本

OnEnable和OnDisable中订阅、退订按钮功能。

PlayerShot中实现随机播放失败bgm。这里有个问题，我在玩家失败状态类中实现这个功能的时候，最终运行时音效呈现的效果是若干音乐叠加而且音调更低，排查了很久找不到原因，所以我把这个功能改成了动画事件触发。动画里事件大概在这个位置

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class DefeatScreen : MonoBehaviour
{
  [SerializeField] VoidEventChannel playerDefeatedEventChannel;//获取事件频道
  [SerializeField] AudioClip[] voice;//加油音效合集
  [SerializeField] Button retryButton;
  [SerializeField] Button quitButton;
  private void OnEnable()
  {
    playerDefeatedEventChannel.AddListener(ShowUI);//订阅展示ui函数
    retryButton.onClick.AddListener(SceneLoader.ReloadScene);//订阅重置按钮功能
    quitButton.onClick.AddListener(SceneLoader.QuitGame);//订阅退出按钮功能
  }
  private void OnDisable()
  {
    playerDefeatedEventChannel.RemoveListener(ShowUI);
    retryButton.onClick.RemoveListener(SceneLoader.ReloadScene);
    quitButton.onClick.RemoveListener(SceneLoader.QuitGame);
  }
  private void ShowUI()
  {
    GetComponent<Canvas>().enabled = true;
    GetComponent<Animator>().enabled = true;
    Cursor.lockState = CursorLockMode.None;//显示鼠标光标
  }
  void PlayerShot()
  {
    AudioClip retryVoice = voice[UnityEngine.Random.Range(0, voice.Length)];//随机播放加油音效
    //游戏错误失败音效 许可:CC-BY 作者:GabrielAraujo 来源:耳聆网 https://www.ear0.com/sound/13207
    SoundEffectsPlayer.audioSource.PlayOneShot(retryVoice);//播放音效
  }
}