- fixed collectible detonation animation timing
- replaced those animatin sprites
- also replaced the collectible sprite with one created with asesprite
- more todo stuff added
- use toggle tile for all toggling entities (transient, switch, door)
- get rod of hard coded sprites (exception: particle class, to be
fixed later)
- changed switch sprite (rect instead of elipse)
- using 1 func for grid collision checking with func arguments in
player and obstacle systems.
- moving obstacles now kill player if business ends points toward him
on contact
- added retry in popup menu
