Here is the project in question…
So if you look in the scripts, I have scripted each animal, when clicked, to change the backdrop to the animal that has been clicked. (I haven't coded them to disappear yet, except for the orange dog) I was wondering if you guys had any tips of what to do (and quite frankly everything else), since I still consider myself quite new to coding. Especially about how to make each of the sprites disappear after another is clicked without overusing the

when backdrop switches to [ dog v]      
hide
when backdrop switches to [ cat v]      
hide

etc., over and over again for each sprite and for each background.

Also, if you could tell me exactly what

define 

^ that is for, it would help a ton. I only understand the gist of what it does and do not understand what it is fully capable of.
Thanks for actually reading this

You could try something like this (example is for the ‘cat’ sprite):

when I receive [Hide v]
hide
if <(backdrop name) = [cat]> then
show
end

And for the dog, you could try this:

when I receive [Hide v]
hide
if <(backdrop name) = [dog]> then
show
end

Just repeat that for every sprite/backdrop, and it should work.

Also, think of custom blocks (define { }) as sprite specific broadcasts, with the option to run without screen refresh, which is VERY useful.

Custom blocks are like a function packed into a single block… you can use them to do stuff like split a whole script into different parts with different variables.

One use is that you can set a single parameter in a custom block and then make the script that defines the custom block refer to the parameter. This way, you can adjust all of the numbers (and thus what your custom block does) with a single block.

Also, above comment should work…

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