How do I... spawn a sprite on key press and prevent another spawn until...

Hi Community,

I'm trying to spawn a sprite on key X press. I only want to press once and prevent another spawn until the sprite is distroyed...

I'm trying to use a Timer on this and it ain't working.

Player on layer... key X press - player spawns grenade sprite with bullet behavior.

I only have 3 grenades and i want to prevent player from pressing X again until that grenade has exploded.

I've tried Is On screen and Boolean, but I can't work it out.

Help!

Thanks,

Roberto

Assuming the object is destroyed when it explodes you can do :

on X pressed with condition global var=0 : action=spawn grenade and set global var=1

on grenade destroyed: set global var=0

The problem with that is you are counting on it to be destroyed and may come across bugs when it doesn't get destroyed or something.

You can also use a timer if that is relevant :

on X pressed with condition timer=0 (on another object not the grenade) : spawn grenade, start timer

Note you can't use the object for timer condition, use system compare 2 values, object.timer.currenttime("timername")=0

Thanks soooo much plinkie,

So this is what I interpreted from your reply:

On key pressed

System var=0 | spawn grenade

| set var = 1

Grenade bullet speed <=0 | grenade Destroy

Grenade | On Destroy | Set var = 0

and it works a treat!]

Thanks again!