How do I only have one object at a time with "Launch object"?

[Shaymin36]

When the player launches a projectile, they are able to shoot more than one while others are still in the frame. How would I be able to make it so they can't make any before the current one is destroyed?

[PBarwick]

Add another condition that checks the number of objects, so:

- player presses fire
- count of bullet =0
>>shoot

[DrWho]

Here is a piece of code that I am using for a game I'm developing that does exactly what your wanting..