使用反射将类中的每个变量添加在一起

Question

是否有办法使用反射来添加每个变量?例如，手工操作的方法是:

public class PlayerStats {
    public float Health;
    public float HealthRegen;
    public float Mana;
    public float ManaRegen;
    public float Stamina;
    public float StaminaRegen;
    public float Armor; 
    public float AttackDamage;
    public float AttackDamageCritical;
    public float AttaackSpeed;
    public float AttackRange;
    public float MovementSpeed;
    public static PlayerStats operator +(PlayerStats ps1, PlayerStats ps2){
        PlayerStats returnPlayerStats = new PlayerStats();
        returnPlayerStats.Health = ps1.Health + ps2.Health;
        returnPlayerStats.HealthRegen = ps1.HealthRegen + ps2.HealthRegen;
        returnPlayerStats.Mana = ps1.Mana + ps2.Mana;
        returnPlayerStats.ManaRegen = ps1.ManaRegen + ps2.ManaRegen;
        returnPlayerStats.Stamina = ps1.Stamina + ps2.Stamina;
        returnPlayerStats.StaminaRegen = ps1.StaminaRegen + ps2.StaminaRegen;
        returnPlayerStats.Armor = ps1.Armor + ps2.Armor;
            returnPlayerStats.AttackDamage = ps1.AttackDamage + ps2.AttackDamage;
        returnPlayerStats.AttackDamageCritical = ps1.AttackDamageCritical + ps2.AttackDamageCritical;
        returnPlayerStats.AttaackSpeed = ps1.AttaackSpeed + ps2.AttaackSpeed;
        returnPlayerStats.Health = ps1.AttackRange + ps2.AttackRange;
        returnPlayerStats.Health = ps1.MovementSpeed + ps2.MovementSpeed;
        return returnPlayerStats;
    }
}

所以我在想我可以通过使用反射来自动化这个吗?比如:

foreach(var field in typeof(PlayerStats).getFields()){
    field.setValue((object)((int)field.getValue(ps1) + (int)field.getValue(ps2)))
}

Answer 1

首先，你最好让它保持原样，因为反射比正常访问要慢得多，并且在操作符中包含它是一个坏主意，因为它们可能被用于循环等，但如果你想达到类似的效果，请执行以下操作:

使用Dictionary查看您的字段都是浮点数，然后您可以添加一个方法到

private Dictionary<string,float> fields = new Dictionary<string,float>()
public PlayerStats()
{
    fields.Add("Health", value);
    // other fields here 
}
public void SetField(string name, float value)
{
     if(!fields.ContainsKey(name))
         throw new InvalidOperationException("Field doesnt exists");
     fields[name] = value;
}

你的类可以有一个默认的字段集，你可以添加到。

+操作符方法将遍历字典中的键，并对两个对象的值求和。

public static PlayerStats operator +(PlayerStats ps1, PlayerStats ps2){
    var playerstats = new PlayerStats();
    foreach(var key in fields.keys)
    {
      playerstats[key] = ps1[key] + ps2[key];
    }
    return playerstats;
}

可以添加强类型访问器作为属性

public float Health
{
     get { return fields["Health"]; }
     set { field["Health"] = value; }
}