有关枚举方法的C＃

Question

嘿，大家我是C＃的新手，我遇到了一些问题。我目前正在为学校做一项任务，而我真的被困在这个部分。我一直在盯着它看，几个小时都在Google上搜索，我很幸运。我已经包括了我迄今为止的内容。

方向不是很好。

“创建4个图像状态的公共枚举CharacterState：攻击，防御，空闲，和死 现在创建一个成员变量状态，以保持角色状态，并用获得 并设置公共属性State为。现在，填写get和set的默认行为来返回/设置状态的值。“

任何帮助将大大appeciated！谢谢

namespace WPFBattle 
{ 
    class CharacterImage: System.Windows.Controls.Image 
    { 
     public enum Attacking{ 

     } 

     public enum Defending{ 

     } 

     public enum Idle{ 

     } 

     public enum Dead{ 

     } 
     public ImageSource IdleImageSource { get; set; } 
     public ImageSource AttackingImageSource { get; set; } 
     public ImageSource TakeDamageImageSource { get; set; } 
     public ImageSource DeadImageSource { get; set; } 

     protected void UpdateImageSource() 
     { 
      switch (State) 
      { 
       case CharacterState.Attacking: 
        this.Source = AttackingImageSource; 
        break; 
       case CharacterState.TakeDamage: 
        this.Source = TakeDamageImageSource; 
        break; 
       case CharacterState.Dead: 
        this.Source = DeadImageSource; 
        break; 
       case CharacterState.Idle: 
       default: 
        this.Source = IdleImageSource; 
        break; 
      } 
     } 

     protected override void OnRender(DrawingContext dc) 
     { 
      UpdateImageSource(); 
      base.OnRender(dc); 
     } 

     public CharacterState State 
     { 
      get { return state; } 
      set 
      { 
       state = value; 
       this.Dispatcher.Invoke((Action)(() => 
       { 
        UpdateImageSource(); 
       })); 
      } 
     } 
    } 
} 

Answer 1

从您的枚举开始。

创建4个图像状态的公共枚举CharacterState：攻击，防御，空闲，和死了......

从你的代码，你会为每个国家一个枚举。枚举对于定义选项很有用，在你的情况下，你应该有一个枚举来定义角色的状态。

public enum CharacterState { 
    Attacking, 
    Defending, 
    Idle, 
    Dead 
} 

...现在创建一个成员变量状态，用get和set保持字符状态和公共财产的国家。

public class Character { 

    public Character() 
    { 
     State = CharacterState.Idle; 
    } 

    private CharacterState state; //-Member variable (private) 

    public CharacterState State 
    { get 
     { 
      return state; // note the casing in State and state 
     } 
     set 
     { 
      State = value; 
     } 
} 

然后你就可以通过其国家属性来访问你的角色的当前状态。

var character = new Character(); 
CharacterState state = character.State; // returns Idle. 
// or set it 
character.State = CharacterState.Attacking; 
Console.WriteLine($"Take cover! character is {character.State}"); 
//- logs "Take cover! character is Attacking" 

希望能够澄清一些事情。

Answer 2

你的枚举声明是错误的。这是你想要的。

enum CharacterState 
{ 
    Attacking, 
    Defending, 
    Idle, 
    Dead 
} 

class CharacterImage 
{ 

    private CharacterState state; 
    public CharacterState State 
    { 
     get { return state; } 
     set 
     { 
      if (state == value) 
       return; 

      state = value;    
     } 
    } 
} 

你也可以写你的财产..

public CharacterState State { get; set; } 

此编译相同的代码上面的财产，除非是价值比较部分。

if (state == value) 
    return; 

Answer 3

首先，声明 - 如你所写 - 说：创建一个公共枚举4个图像状态。这仅仅是具有4个可能值的一个对象。创建，然后使用属性/字段成员来管理内部值。也许，谈到这样的：

namespace WPFBattle 
{ 
    public enum CharacterState{ 
     Attacking = 1, 
     Defending = 2, 
     Idle = 3, 
     Dead 
    } 

    class CharacterImage: System.Windows.Controls.Image 
    { 

     public CharacterState _state; 

     public ImageSource IdleImageSource { get; set; } 
     public ImageSource AttackingImageSource { get; set; } 
     public ImageSource TakeDamageImageSource { get; set; } 
     public ImageSource DeadImageSource { get; set; } 

     protected void UpdateImageSource() 
     { 
      switch (_state) 
      { 
       case CharacterState.Attacking: 
        this.Source = AttackingImageSource; 
        break; 
       case CharacterState.TakeDamage: 
        this.Source = TakeDamageImageSource; 
        break; 
       case CharacterState.Dead: 
        this.Source = DeadImageSource; 
        break; 
       case CharacterState.Idle: 
       default: 
        this.Source = IdleImageSource; 
        break; 
      } 
     } 

     protected override void OnRender(DrawingContext dc) 
     { 
      UpdateImageSource(); 
      base.OnRender(dc); 
     } 

     public CharacterState State 
     { 
      get { return _state; } 
      set 
      { 
       _state = value; 
       this.Dispatcher.Invoke((Action)(() => 
       { 
        UpdateImageSource(); 
       })); 
      } 
     } 
    } 
} 

Answer 4

public enum CharacterState { 
    Attacking, 
    Defending, 
    Idle, 
    Dead 
} 

public class Character { 

    public Character() 
    { 
     State = CharacterState.Idle; 
    } 

    private CharacterState state; //-Member variable (private) 

    public CharacterState State 
    { get 
     { 
      return state; // note the casing in State and state 
     } 
     set 
     { 
      State = value; 
     } 
}