'Invalid Expression' - this should be simple ;)

gizmokris

Hi all, HNY!

Please can you help? Ive searched the forums and tried lots of different ways to do this, but Im probably just missing something.

Im trying to change an image using a Change Attribute.
There are 10 different images per level, and 20 levels. My images are named as follows:
ImageNumber_LevelNumber.png. (1_1, 2_1...... 1_2, 2_2... etc, etc)

I have set up a 'Level' attribute that works perfectly elsewhere in my game. (this is the number of the current level)

I also have a local attribute in the actor, called 'RandomImageNumber' - I have a Change Attribute set up that changes the attribute to a random number between 1-10)

What is the expression I use on a Change Attribute for 'Self.Image'... eg:
Change Attribute: 'self.Image' To: self.RandomImageNumber_Game.Level

What happens with the multiple ways Ive tried, is, the actor displays as white, and with the text 'invalid expression' (I set a display text to troubleshoot)

Please help!

tatiang

self.RandomImageNumber.."_"..game.Level

Two dots (..) are used to concatenate or join text strings and attributes. Text strings ("_") must be surrounded by double quotes.

gizmokris

@tatiang THANK YOU!!!!! I knew I should have posted sooner and saved myself an hour or so

I did try quoting the _ , and also used the double dots after the first part of the expression, but because I didnt really understand what they were, I obviously didnt do it completely right.

Thanks again, Ive just tested it and it works perfectly!
Youre a star.

JSproject

Me picturing you picturing him as a star

gizmokris

Love that!! (*)

JSproject