Re: RegEx problem with Escape sequences - C# Discussion Boards

Re: Help needed XNA and Window Forms

larsp77712-Feb-14 4:34

larsp777

12-Feb-14 4:34

Thanks, it starting to be clear but it isn´t all that simple to me... Smile | :)

So, suppose something happends in my XNA-game.

There is a update-method were I check if the enemy is alive and within range of Another object:

if (!(enemy.IsAlive && (player.X <= enemy.X + 100) && (player.Y <= enemy.Y + 50 || player.Y >= enemy.Y + 50))) 
               isActivated = false;

if (enemy.IsAlive && (player.X <= enemy.X + 100) && (player.Y <= enemy.Y + 50 || player.Y >= enemy.Y + 50))            {
                             
if ((depthChargeX >= enemyX - 50 && depthChargeX <= enemyX + 50) || (depthChargeY >= enemyY - 50 && depthChargeY <= enemyY + 50) && isActivated == true)
                { 
                        enemy.IsAlive = false;
                        hit.Play();
                        wreck2.IsAlive = true;
                        
                        wreck2.Update(gameTime);
                       
                }
            }

If it isn´t in range I want to send a bool or something to my form so I can e.g. enable or disable a button.

Would I then send that bool to the OnGameEvent or must I create a new class like in one in one of the examples. I am a little confused still I must admit.

But I suppose the HandleGameEvent in the form listens to the event raised.

And

game.GameEvent += HandleGameEvent;

Is where you subscribe to the event raised by the game.

I also get: The name 'HandleGameEvent' does not exist in the current context but I suppose something is missing.

Re: Help needed XNA and Window Forms

Pete O'Hanlon12-Feb-14 4:50

Pete O'Hanlon

12-Feb-14 4:50

larsp777 wrote:
The name 'HandleGameEvent' does not exist in the current context but I suppose something is missing

You are missing the event handler itself. Assuming that it just passed across EventArgs, the handler would look like this:

private void HandleGameEvent(object sender, EventArgs e)
{
}

larsp777 wrote:
If it isn´t in range I want to send a bool or something to my form so I can e.g. enable or disable a button.

A simple event args class that looks like this should help:

public class GameRangeEventArgs : EventArgs
{
   public GameRangeEventArgs(bool isInRange) : base()
   {
     IsInRange = isInRange;
   }
   public bool IsInRange { get; private set; }
}

Now, in your Game, you would declare this as:

public event EventHandler<GameRangeEventArgs> GameRangeEvent;

To use this from your game code, I would typically have a helper method that looks like this:

private void RaiseGameRangeEvent(bool isInRange)
{
  var handler = GameRangeEvent;
  if (handler != null)
  {
    handler(this, new GameRangeEventArgs(isInRange));
  }
}

Now, in your code you simply call this method and the event is raised if there is an event handler attached to it in the form. So, what would this look like in the form? Well, you will have something like this:

game.GameRangeEvent += HandleGameRangeEvent;
...
private void HandleGameRangeEvent(object sender, GameRangeEventArgs e)
{
}

Re: Help needed XNA and Window Forms

Marco Bertschi12-Feb-14 1:40

Marco Bertschi

12-Feb-14 1:40

How to raise and consume Events[^]

Clean-up crew needed, grammar spill... - Nagy Vilmos

RegEx problem with Escape sequences

Marco Bertschi11-Feb-14 23:30

Marco Bertschi

11-Feb-14 23:30

Alright, I'm gonna drop this here since I need a .Net specific Regex and I don't know how the .Net Regex engine may affect the expression as whole.

I have a string which is formatted as ASDF@123123.
The string ASD@F@123123 shall not be considered a valid string, while AS\@DF@123123 shall be considered valid.
What I got so far is (?<=[\\]{2,})(@) which allows me to check whether a \ is leading an @ sign.
The problem starts with the evauluation, I simply can't merge it somehow with (^[^[@\\[\\]\"= \\p{C}]*[@\\d]?$) (which shall do the evaluation of the string as whole).

So, how can I merge (?<=[\\]{2,})(@) into (^[^[@\\[\\]\"= \\p{C}]*[@\\d]?$)?

Clean-up crew needed, grammar spill... - Nagy Vilmos