C# 关于枚举方法

Question

大家好，我是 C# 的新手，我遇到了一些问题。我目前正在为学校做作业，我真的被困在这部分了。我盯着它看了好几个小时，用谷歌搜索了好几个小时，我很幸运。我在下面列出了到目前为止的内容。

方向不是很好。

“为 4 个图像状态创建一个公共(public)枚举 CharacterState:Attacking、Defending、Idle 和 Dead。 现在创建一个成员变量 state 来保存角色状态和一个带有 get 的公共(public)属性 State 并设置。现在，填写 get 和 set 的默认行为以返回/设置 state 的值。”

任何帮助将不胜感激!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。

Create a public enum CharacterState for the 4 image states: Attacking, Defending, Idle, and Dead ...

根据您的代码，您为每个状态创建了一个枚举。枚举对于定义选项很有用，在您的情况下，您应该有一个定义角色状态的枚举。

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

... Now create a member variable state to hold the character state and a public property State with a get and set.

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;
       }
}

然后您可以通过其 State 属性访问角色的当前状态。

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"

希望这能澄清事情。