i need some help understanding the source

[Erez Avidan]

hello!

i'm trying to understand the components of this game.

but i can't get where the order of drawing is set,

like, the background first then the player and objects and then the hud

Helhp

[Matty Moriates]

My understanding is that the RenderSystem takes a priority parameter for what to render. These priority values are defined in SortConstants. 

The LevelSystem uses these constants in its loadLevel method which passes them to the LevelBuilder class. I know that isn't a very clear picture, but this should give you somewhere to start looking to further understand how it works.