Unfortunately once the initial wallpaper is set, we can’t alter the image file anymore. Even not by setting different initial wallpapers for each script tab. Because the last applied wallpaper will be the one and only initial wallpaper for the whole instrument.
But we can either offset the initial wallpaper that means moving it via set_skin_offset or we can use a label element to set up multiple backgrounds which is covered in this article. Even dynamically like switching them when hitting a navigation button.
The instruments background image is called “wallpaper”. Its’ the basic background texture where all UI elements (knobs, buttons etc) get layered on top. Just to give you an example: we could take our default graphic software and design a realistic synth surface wallpaper (png file) containing “sockets” for some knobs and buttons with detailed shadows, light reflections etc. After that, we can create the individual knobs & buttons and place them exactly inside the designated sockets and areas by layering them on top of our background wallpaper.
Like with any other programming languages in KSP there are also variables, arrays and constants.
They can only be declared inside the on init callback and can then be used throughout the whole script. So they are all on global scope by default and can even be used inside custom functions. Read more »