Exactly :)

Your question:

From 0 to width-1 (indexes from 0 to 9) is not same as from 1 to width (indexes from 1 to 10)

Both index 10 values, but as the array only has values in indexes 0-9, the later one would try to index array values that do not exist. This is not recommended, ever :)

array.width = 10

array.height = 10

That means your array is 10 elements wide and 10 elements high.

Indexing of arrays starts from 0, so your array indexing should be from 0 .. array.width-1 (9, which is the index of last array value)

You'd need to set the location of the object you want to move at the moment 'Touch start' event is triggered. Would be something like this:

On any touch start

    Actor set position to touch.X, touch.Y

I did need the array to be 11 then, but fill it with something other than the numbers i needed, before refiling it with the randomNumbers , yes?

Exactly :)

Every value in array is 0 until you set it as something else, thus the randomizing part never randomed 0.

Here you go: Fixed version

The array was initialized with 0's so it never gets randomed and random nubmer choosing stage. I initialize the array with -1 so it's a bit more intuitive to use now :)

Well width of your array is only 10, no way you can fit 11 numbers into that :)

EDIT: So set your array width to 11, adjust the limit of numbers accordingly and do the change I described before.

Change "while i <= Array.width"

to "while i < Array.Width"

Posting a .capx is usually a good idea, but just going by your description I'd guess you need to add events like:

Ball 'on collision with' ball

     Bounce to opposite directions

Posting a capx would be useful, it's really hard to see what you are doing with just written descriptions.

I ran into same problem with 'on created' not triggering on any container objects. Here is an example capx: On created problem

It's easy to observe if you switch the action inside 'on created' event to buttons 'on clicked' event.

Not 100% sure but I think creating the water with chess plugin does not pick the created instance, unlike creating it with one of the build in functions would.

Solution would be to add event:

Water On Created

     Set drop to floor(random(0..3))

You got fun start for a game there by the way :)

There are some plugin dependencies in the capx so posting screenshot of the troublesome events might be a good idea as well :)