Levels

Each game contain one or more levels.

Each level is a "scene" and contain a set of initial objects and a background.

Levels can also contain buttons, events and level variables.

For example, your game can have a level named "Title Screen" wich can contain buttons "play", "hiscores" and "help".

The level "Stage 01" can contain level variables "energy" and "time_left".

You level can also contain events to check collision between the player and enemies, remove enemies when they got hit by bullets, add score when player kill enemies and so on.