initial 07 nueva-rama
GameBoard.iterate
GameBoard.add
GameBoard.remove
GameBoard.remove l nterior stab l code d remove
GameBoard.resetRemoved
GameBoard.finalizeRemoved
GameBoard.overlap
GameBoard.overlap2
GameBoard.collide
GameBoard.detect
GameBoard.draw
GameBoard.step
cambio en detect
cambio en iterate
initial 08
initial 08 añadida l linea d gameboard
initial 08 añadida l linea d missile
missile.draw
missile.step