when a runtime error happens inside a lib it only tells there's an error on line 1.

this makes developing a multi-file project a problem.

you need to be very careful with a lot of code or else you won't be able to find the problem.

how do you check an object/variable/array value?

as far as I know, naalaa doesn't have console log function.

naalaa gui lib doesn't have a one line alert/popup i can put vals in.

how do I do that (debug values).
 
it's becoming hard to develop without being able to check these things.

please help.

it's very hard for me to check variables values etc without it.

this is a feature that would really help me in development in naalaa.

if it exists I would love to learn about it.

also is theres a one line dialog popup? that can be an alternetive.

javascript has alert() java swing also has one line dialogs.

when i try to test my game out I save it then go to run it and it will flash up then disappear. it makes the game but doesn't run it. any ideas as to why?

I ran into this problem for a second time, i want to init an object using a function instead of writing alot of attributes.
and I get this error



this  code recreates the problem in a simplified way:

I was trying to play with naalaa opengl and ran into a wall fast. didn't even pass the first nehe tut code.

hers the code. its supposed to show a triangle and a rectangle side by side.

and a start screen.

not a game but an important utility. naalaa examples don't contain a standalone example for a splash screen and start menu
or screens/scenes handling.

in this file/example, I try to fix this.

about screens/scenes handling there is no game scene but I did show how to control screens with an if and boolean(the start screen).
I will create a more complex example using this code.
but it is usable as is for creating text and menu screens with a simple function and arrays.

I wanted to create a tool to do this easily. create an object array with btns and drop it into a function.
"a menu screen in one line of code" more or less.

hers the git repo with the code:

https://github.com/yoel123/naalaa-menu-screen-sample



the btn images are generic but can be anything for the idle and hover states. I used the blank btns as placeholders.


also, I should make tutorials for these, maybe for total noobs.

I need to test naalaa as a teaching tool for programming/ game programming. an interesting concept.

a very simple game don't let enemies touch you.

this time it's not a port I thought of the idea yesterday

this is the git repo for the game:

https://github.com/yoel123/naalaa-avoider-game



the hardest part was figuring out naalaa doesn't have a way to check if an object attribute is null.

to go around it I just initiated everything and add a object.active =  false as a flag that this entity doesn't "exist" yet.

retro game programming is not easy, looking at the scrolls of doom again I appreciate even more the mighty Carmack and other code mages of his age.

creating the start and game over screen was also a task (not hard) I will try to improve it, maybe add a menu screen func/s (i think it will take more than one function). maybe make it its own lib so others may use it too.

off to the next one.

So i looked at the examples in NaaLaa for raycasting but i still don't understand.

the title and also is there a way to check if an object attribute exists?

let's say in an object array something like:

o?[2]

if not o[1].x then return 0

that code should stop a function if o[1].x doesn't exist.

in java/cpp it will be:

if(o != null){}

in php:

if(isset(o)){}

if naalaa don't have this implemented it will be hard to find a way around it.

dose naalaa has try catch maybe?

 as always thank you for your help.