Controlo.
up - rodar
down - move down
left - mover para direita
right - mover para esquerda
space - mover para baixo
n - novo Jogo
r - reset
Rules:
1) Puzzle speed = 80+700/level miliseconds, the smaller value
the faster puzzle falls
2) If puzzles created in current level >= 10+level*2 then
increase level
3) After puzzle falling score is increased by
1000*level*linesRemoved
4) Each "down" action increases score by 5+level (pressing space
counts as multiple down actions)
