Make glow rendering more efficient (don't draw glows that would be way offscreen)
Added a death screen!
attempting to restructure all level data into a separate state to allow level reseeting (curently crashes on entity interaction on second level
Bug fix: crashing on second life
Tidy up masses of commented-out code in game.js
tweaked level generation to get'z' shape
Add transition to next level (upon reaching the far right hand side of map)
Carry battery life between levels and track level number
Add 'you got to level x' message on death screen for x > 1 (my current best is 3)