action building
{
while (1)
{
if (vec_dist(my.x,crawler.x) <= 5500) // the object is close enough to be visible?
{
my.invisible = off; // then show it!
}
else
{
my.invisible = on; // now hide the entity in order to increase the frame rate
}
wait(1);
}
}

I use the above code to make buildings invisible when the player is far away. When I move around a lot, the building becomes visible and invisible a lot of times, and after some time the framerate drops a lot. And if you wait longer I get a error that says "too many functions".
Can someone tell me how I can change this function so that it doesn't affect the framerate and the amount of functions.

Thanks anyway, Molotov.

I think that problem is not with this function... this one looks good.
Stay in one place and pres F11 and look at running functions... if still growing... you have endless loop or some function is calling non stop.
Maybe this function is starting everytime in some reason... serch your code.
BTW... why You are not using a fog or camera.clip_far?

I think the same.Could it be,that is not all of your action? It seems that you are producing all the time entities or call always a function.
The other mistake:Making a entity invisible,your fps will not getting better.Vou have to ent_remove it or minor to ent_purge it.Ent_purge is better,if your entity will be visible once again.If you don't need the entity again,remove AND ent_purge it!
Ent_purge remove the entities memory of your grafical card.Excuse my bad english!

Looking AUM62 Workshop, George has a solution to
eliminate door close/open (entity visible/invisible)
very often problem.

Thanks everybody for your fast reply's. I solved it, it was indeed that the function was called in another function his while loop. What made it be called non-stop.

Tompo; I'm also using fog and camera.clip_far, the three methods together works really great.

KMS & Zeitwerk; Zietwerk is right, a entity that becomes invisible does influence the framerate because it doesn't need to be renderd anymore.

Anyway, thanks everybody.

does that mean that you can have an almost infinite size level by making far-away objects invisible? I have a city made of map entities, and they really slow down the rendering time, so that would help heaps.

Hey Impaler, in theory it should work and so far for me it gives great results. My plan is to make a huge outdoor world, kinda Grand theft auto like. But my land is at the moment still small. Also the above three methods are good for creating large worlds but you need more function to really get it working. When my game is further developed I will post a demo.

By the way I'm curious to your city maybe you can show some images.