create a fire boundary

hi

i want to create a boundary for my bullet that player can fire in the boundary lines

and when the bullet is out of the boundary it will destroy

just like this picture :

how can i do this ?

<img src="http://www.uploadtak.com/viewer.phpfile=g3276_boundry.jpg" border="0" />

System compare two values : distance(player.x,player.y,bullet.x,bullet.y) > 200 - bullet destroy?

BTW, I can't see your picture, so I just guessed.

thanks alot

it was very easy i forgot distance expression :D

update ...

i set that when distance between player.x , y and bullet.x,y is grater than 400 bullet destroy

but this events destroy all of bullet that create every 0.1 second

so the fire isn't smooth and it flash every 0.1 second because construct don't know every 0.1 second create or destroy bullet !?

how can i fix this problem ?

i update my last post ...

I think this is one of those moments you could use a for each.

for each bullet - distance(player.x,player.y,bullet.x,bullet.y) > 200 - bullet destroy

But I'm still wrapping my head around the instances and the for each stuff, so I could be wrong.