How do I do the same in C# based on java code?

Question

1.00/5 (1 vote)

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I have java model like this:

C#

public class AttackCalcObserver {

	public boolean checkStatus(AttackStatus status) {
		return false;
	}

}

C#

public class AttackStatusObserver extends AttackCalcObserver {

	protected int value;
	protected AttackStatus status;

	/**
	 * @param value
	 * @param status
	 */
	public AttackStatusObserver(int value, AttackStatus status) {
		this.value = value;
		this.status = status;
	}
}

main class:

C#

public class AlwaysDodgeEffect {

	public void startEffect(final Effect effect) {
		AttackCalcObserver acObserver = new AttackStatusObserver(value, AttackStatus.DODGE) {

			@Override
			public boolean checkStatus(AttackStatus status) {
				if (status == AttackStatus.DODGE) {
					if (value <= 1)
						effect.endEffect();
					else
						value--;

					return true;
				}
				else
					return false;
			}

		};
	}

}

What I have tried:

this is what i tried in c#. The classes AttackCalcObserver and AttackStatusObserver are same in java.

so this is AlwaysDodgeEffect class in c#:

C#

public class AlwaysDodgeEffect
    {
        public override void startEffect(Effect effect)
        {
            AttackCalcObserver acObserver = new AttackStatusObserver(value, AttackStatus.DODGE)
            {
                //what i need todo here?
            };
        }
    }

Posted 16-Dec-16 1:47am

EADever

Updated 16-Dec-16 8:53am

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Comments

Richard MacCutchan 16-Dec-16 10:57am

I think you would need to use Events and Delegates to achieve the same effect.

EADever 16-Dec-16 20:50pm

Can you give me an example?

Richard MacCutchan 17-Dec-16 4:10am

Ramza360 has given you one below. Or you could look at the samples at C# Tutorials (C#)[^].

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Ramza360 · Answer 1 · 2016-12-16T08:53:00

This can be accomplished fairly easily with delegates.

Example:

C#

public delegate boolean CheckStatusDelegate(AttackStatusObserver observer);

public class AttackStatusObserver {
        protected int value;    
        protected AttackStatus status;
        protected CheckStatusDelegate statusDelegate;

        public int Value {
            get { return this.value; }
            set { this.value = value; }
        }

        public AttackStatus Status {
            get { return this.status; }
        }

	/**
	 * @param value
	 * @param status
	 */
	public AttackStatusObserver(int value, AttackStatus status, CheckStatusDelegate statusDelegate) {
		this.value = value;
		this.status = status;
	        this.statusDelegate = statusDelegate;
        }

        public override bool checkStatus(int value, AttackStatus status) {
            if (null != statusDelegate) {
                // Only do return if you do not wish to process anything else
                return statusDelegate(this);
            }

            // otherwise process normal checkStatus
            //
        }
}

public class AlwaysDodgeEffect {
    public override void startEffect(Effect effect) {
        AttackCalcObserver acObserver = new AttackStatusObserver(value, AttackStatus.DODGE, CheckStatusCallback);
        // Alternatively you can have an event or even the constructor call this internally.
        acObserver.checkStatus(AttackStatus.DODGE);
    }

    private bool CheckStatusCallback(AttackStatusObserver observer) {
        if (observer.AttackStatus == AttackStatus.DODGE) {
           if (observer.Value <= 1)
                effect.endEffect();
           else
                observer.Value--;

           return true;
        }
        else
            return false;
    }
}

Another approach would be to use the Visitor pattern.
Implementing the Visitor pattern requires that you add a few methods to the base class and creating a Visitor object. Its a bit more complex but can be VERY powerful.