If Object is in the Play Area....

[Bipolar_Games]

I have a problem... I have 3 instances of "Object A" in this large scrolling level, and I want it so that whenever any instance of "Object A" is in the Play Area (if you can see it currently in the screen), I want to create an "Object B" and place it on top of "Object A" (it's a special effect that I don't want to use on objects out of frame to save memory).

Here's my code:
+ "Object A" is in the play area
- Create "Object B" at (0,0) from "Object A"

But whenever any "Object A" is on screen, an "Object B" only gets created at the first "Object A" I placed in the level. How can I make this work for multiple "A" objects in one level, and also the possibility of having multiple A's on the screen at once?

If possible, I would like to avoid Spreading a value through one of their Alt Values and Fast Looping through each instance on every frame to check if any of them are on screen... that takes up too much valuable memory.

[LB]

Use the ForEach object, it's much more efficient than spreadvaluefastloop

[James]

If possible, I would like to avoid Spreading a value through one of their Alt Values and Fast Looping through each instance on every frame to check if any of them are on screen... that takes up too much valuable memory.

How would that take up memory?

[Bipolar_Games]

If possible, I would like to avoid Spreading a value through one of their Alt Values and Fast Looping through each instance on every frame to check if any of them are on screen... that takes up too much valuable memory.

How would that take up memory?

Maybe I'm using the wrong word... it would slow down the FPS because it's running every frame for every instance of Object A, that's what I mean.

Anyway, I'll try ForEach, I've never used that one before, thanks!

Edit: ForEach worked perfectly!! Though now I have a problem with "If Object is in the play area." Apparently I am a bit rusty (it's been a while since I've done any thing big in MMF2), but I thought that meant "If Object is in the visible section of the frame," meaning if you have scrolled to a spot where you can physically see the object. I guess not... is there any way I can do that other than checking X and Y values?

[LB]

X"Object is closer than 0 pixels to window's edge" would be what you want.

"Object is in the frame area" means if it is in the frame area, not screen area.

[Bipolar_Games]

Yeah that's what I was trying to avoid... why is there not a "Object in Screen Area" condition yet? Get to it devs! :P

[LB]

"Object in Screen Area" == "[color:#FF0000]X[/color] Object is closer than (Object Size * -1) pixels from the edge of the screen"

[Bipolar_Games]

Oh fine, lol.

So I tried it, and it took more processing power to check if it's in the screen than it did to just create Object B on all of the A's no matter where they are. Thanks tho!