thanks for playing! ^^

The first bird room has been a source of frustration for some players, but I'm at odds with it atm - it seems to partly work because it in fact *should *teach that momentum is preserved when jumping from a moving platform. That being said, it shouldn't do that through frustration, though! :D

And then, the scanner lines!

They are 8 lines (4 red, 4 yellow) that increase in length by 2 pixels every frame until they collide with something. The rotation angle *phi_i* of an individual ray *i* is calculated with

phi_i = phi_0 - phi_max * sin(0.02*t + pi/8*2*i)

where *phi_0* is the center direction (that the player can manipulate), *phi_max* is the half of the ray cone "width" angle and the sine term changes per time *t *and ray *i*.

So your guess wasn't that far from the truth!