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I wanna use zdepth variable to change some actors zdepth in RPG game. And use fps variable to change the fps of any animation, such as to make a wheel rotate as fast as it's speed...

I totally agree.

So, Makslane...please grant our request...

I thought that there already was a change zdepth variable.

Not yet, zdepth is a FUNCTION right now. not a VARIABLE

I never quite understood the difference

Function is such as : CollisionEvent, ChangeAnimation, ChangeZDepth, CreateActor, ChangeTransparency and etc
Variable is such as : r, g, b, angle, x, y, xvelocity, yvelocity, directional_velocity, transp, user variables and etc

oh, I C.

why do you need direct access to the variable?

To make efficiency
Do you know how to make ZDepth of any actor will decrease when his y position decrease too???and increase when his y position increase too???
Such as :
Actor>KeyDown>Up>

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y-=3;
zdepth-=0.1;

Actor>KeyDown>Down>

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y+=3;
zdepth+=0.1;

cool Idea

I wanna make that code in RPG game, to make difference zdepth depend on it's y position

Bee-Ant, is it always changing y by 3? and always changing z depth by 0.1?

So, do you know how to make different zdepth depend on it's y position???
Also make different animation fps depend on it's speed???
I also want this :

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fps=xvelocity;

You cannot change the FPS, but I will show you something with the zdepth function.

Now I need to clarify.. the zdepth will always be a certain value depending on the actual y value, rather than just changing whenever you move? Say that y = 300. zdepth will always be a certain value based on that, rather than how many times a key is pressed? You showed your example that way, but I am just wondering if it can be done without a keypress?

Try this:

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ChangeZDepth("Event Actor", y*0.03333);


Put that right after the y position changes. Note that it could make the zdepth more than 1.0, but thats perfectly fine with GE.