At first, I thought the hitbox in front of the player was too large, but then I noticed the asteroid images are apparently being resized, so I suspect the hitbox for the asteroids is assuming the original dimensions, causing collisions in apparently open space. I'm only assuming this is what's happening, since I don't want to wade through that much javascript to find out.
Since this seems to be a demo i'm not going to get too pedantic about the gameplay, but that definitely is something you would want to address in an actual game.
haha, you mean the polymer licensing right? I have none :) actually you can even see the full code here, it's open sourced https://github.com/catalint/asteroids
Since this seems to be a demo i'm not going to get too pedantic about the gameplay, but that definitely is something you would want to address in an actual game.