How to make actors display at random in a certain area?

Zachhoard

OK, In my game theres an airplane that shoots smiley faces. Over time, in scene 1, different kinds of smiley faces are introduced. Once all the smiley faces are introduced there will be a boss, after you defeat the boss you will be prompted to continue in survival mode. I want survival mode to go forever, or until the player dies, how can I get the enemy smiley faces to randomly spawn, off the screen, in survival made?

MarkOnTheIron

About random spawn, what if I have 10 doors and 3 actors and I want actor 1 to spawn from one of the doors, then after a while actor 2 spawn from one of the other 9 remaining doors and then actor 3 spawn from one of the remaining 8 doors. Each time the door should close and become inactive.

MarkOnTheIron

Then let's start only on the random thing: I'd like to have 3 actors spawn randomly from the 10 doors, let's say one every 10 seconds but only once (the intervals of time can be set up with a timer rule, right?).

WeirdFreak96

i am working on a game where the player has to climb as high as possible. i need to spawn blocks from random positions (along the top) every 2 seconds, for the player to climb up

help??