Animation frame is random(0,2), why is Frame 3 being shown

I have some flashing spots.

There is an entry in my event sheet setting the animation state to 0 or 1 (green color and red colour). There is a third animation frame, which is yellow.

The animation fram is set every x seconds with:

floor(random(0,2))[/code:3lxhpdkz]

However, when the page loads, several of the spots are in animation frame 3 (Yellow).  This is only when the page loads initially.   After a second or two, the fewer yellows are shown and the red and green take over.

[attachment=1:3lxhpdkz][/attachment:3lxhpdkz]

Here is my event sheet:

[attachment=0:3lxhpdkz][/attachment:3lxhpdkz]

Have you set animation speed to zero?

(0,2) are 3 frames 0,1,2.

(0,1) is correct.

(0,2) are 3 frames 0,1,2.

(0,1) is correct.

That's what I thought, but the manual says it doesn't include the upper number.

random(a, b)

Generate a random float between a and b, including a but not including b.

So the manual must be wrong.

codah

It is indeed. A and b are taken. And I think BanksySan is referring to the number 3, instead of questioning the number of algorithms that it's returning (0,1 and 2)

do you have more than 3 frames?.. if not, just use choose(0,1).

floor(random(0,2)) is perfectly fine. it will return only 0 or 1 and never 2. There must be an issue with something else.

(0,2) are 3 frames 0,1,2.

(0,1) is correct.

Nope. random(0,1) will return value 0 to 0.9999..... but never 1 and floor(random(0,1)) will always return 0

yeah for random frames I always use: choose(1,2,3)

but I think you can do round(random(0,2)) to give you values 0,1,2 but it ends up not being that random since 0.6-1.4 all become 1 etc.. whereas only values below 0.4 end up being 0.

correct expression of random between two values - n and m (where m > n):

a = random(m - n + 1) + n

you may need floor(random()) if you want integer values

The issue is likely that the speed of the animation is not set to 0 and as such it does display the last frame of the animation.

Have you set animation speed to zero?

That would explain why it's getting yellow at the start, but never again.

if the animation got the 3 then stopped, all subsequent changes would be permanent.

That might also explain why some get there faster then others, if some are set to frame 2.

A plan is beginning to form. I'll do some tests and post the results up.

(0,2) are 3 frames 0,1,2.

(0,1) is correct.

> (0,2) are 3 frames 0,1,2.

> (0,1) is correct.

>

That's what I thought, but the manual says it doesn't include the upper number.

random(a, b)

Generate a random float between a and b, including a but not including b.

So the manual must be wrong.

do you have more than 3 frames?.. if not, just use choose(0,1).

This behaviour of random is pretty common across platforms. It would be horrible if random(n,m) could return both n and m as the the space between n + 1 and m - 1 would be different.