How do I make a enemy spawn manager?

I am trying to make it where when a player hits a trigger enemies will spawn, but only as long as that enemy isn't already spawned. I am tying to set it up where I can have a set of events that will spawn my enemies, so i do not have to copy and past it all the time.

I have already got it where the enemies will spawn when you hit the trigger, but they will keep spawning unless I give them each a global variable for it to check if they are alive. Every time I try to make it a instance variable they just wont spawn.

Anyone have any ideas?

I think i could help, it doesn't seem to be such a complicated deal. However, could you please edit the post so i could better understand what you mean, and the problem you're having?

For what i think you meant. maybe you could add a "object.count < 1" as a condition for spawning?

What I have is 3 different enemy types and I want to spawn them when I hit a trigger, but i want to spawn them on their spawn points I created. Also I want it where you can respawn them by hitting the trigger again while they are dead.

I am able to get this to work, but I have some issues. One being that I want to re-use this code/function to spawn more enemies base on different triggers and different spawn points. i do not want to just copy and past it.

Also how do I put a screen shot of what I have to show you what I been doing?

ok, so:

1) on something in collision with trigger, while enemy.count = 0 ; then system creates object at coordinate. (this coordinate could be any object.x, object.Y, in case you want to move the spawner around)

2) I wouldn't mind copying this line for different triggers/spawners. it's just 1 event anyway =)

3) if windows 7, there's a tool for making images from screen. if not, press the print screen button i guess

What i have already is

on collision-> call function(Spawn Manager)

function(Spawn Manager)

{

system enemycounter=0

{spritespawn: spawn another object: enemy1

system: add 1 to enemycounter

}

}

On enemy1 destory -1 from enemycounter

I attached the picture of my screen. This might help.

now what this does is spawn them at the Enemyz1 sprite when ever there is no enemies spawned and you collide with the trigger.

I need to make it where they will spawn at the closest Enemyz1 sprite not just the one that I hard code in.

I need some sort of variable that will change depending on which sprite you are closer 2.

Btw Spawns Enemy 1 is what you should be looking at

Spawns Enemy 2 is test one I was working on.