.py

# Scroll the screen (aka. move the camera) when the character reaches the margins.
var drag_margin_left = 0.3
var drag_margin_right = 0.7

# The left/right most edge of the scene. (The camera couldn't move past these limits.)
var right_limit = 1000000
var left_limit = -1000000

# The size of the screen
var screen_size