I am trying to make a game, in the console (it's kinda simple). I want to have multiple types of soldiers, so I thought I'd make an abstract soldier class
public abstract class Soldier
{
public string Name;
public int Health;
public float ShootingRange;
public float MovementRange;
public Player Owner;
public Vector2Int Position;
public char Symbol;
}
The reason for this is I would like 1 list for all of the units a player has. The player class looks like this:
public class Player
{
public int Money = 0;
public ConsoleColor Color;
public List<Soldiers.Soldier> Units = new List<Soldiers.Soldier>();
public Player(ConsoleColor c)
{
Color = c;
}
public void AddUnit(Vector2Int Position)
{
Units.Add(new Soldiers.Rifleman(this, Position));
}
}
Then I wanted to implement a version of the Soldier class to make a kind of soldier I call it Rifleman:
public class Rifleman : Soldier
{
public int Health = 10;
public float ShootingRange = 5f;
public float MovementRange = 2.5f;
public Player Owner;
public Vector2Int Position;
public char Symbol = Utils.MASTERKEY["Rifleman"];
public Rifleman(Player owner, Vector2Int position)
{
Owner = owner;
Position = position;
}
}
The problem is that in my map class (how I display and manage the game) when I go to try and pull the char representing the Rifleman class on the map, it finds it to be a null value. How could I fix this?
As @Progman and @bmm6o said, you're redefining your Symbol
field. Since your List<Soldier>
returns a Soldier
, its Symbol
field is what you're getting, which wasn't assigned.
You should either be using abstract and/or virtual properties you can override, or protected setter properties like either in the examples below showing different forms.
public abstract Soldier
{
public abstract char Symbol { get; }
public virtual string Name { get; } = "Soldier";
public string Weapon { get; protected set; } = "Gun";
}
public Rifleman : Soldier
{
public override char Symbol => 'r';
public override string Name => nameof(Rifleman);
}
public Sniper : Soldier
{
public Solder()
{
Weapon = "Rifle";
}
public override char Symbol => 's';
}
Fields should almost always be private, and are often unnecessary in modern versions of C# (what you see above are language features that should work with any .NET Framework or Core version).
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.