rename Map class into Maze class and separate its components into a Maze and a MazeView class
add MazeView._computeSize() ; remove useless code
add Maze.createFromArrayOfLitterals()
add the possibility to draw the scene with a top and left padding
too lazy to explain...
the key listener now saves the dates when the keys where pressed ; the key handler now uses this to be able to update the game internal state even if there were some system lag
remove useless code ; fix the bug that prevent the pacman to be set wherever we want at the beginning (was because of mazeCurrentLine(), that didn't check if a point has perpendicular direction on its line)
add the function that normalizes the coordinates of elements inside MazeView ; add Status and StatusView classes, that will represent the score, lives, ... displayed
the game now displays an ugly status bar...