Pacman clone

Stories
1. Game starts and closes with escape
2. Pacman appears on screen
3. Pacman moves in cardinal directions on arrow keys
4. Pacman can only move in progressive directions
4.5. Pacman animates movement
5. Walls are drawn
6. Walls are loaded from array
7. Walls are loaded from disk
8. Pacman cannot walk through walls (check behaviour in original)
9. Add procedural dots
10. Pacman can eat dots
11. Eating dots gives points
12. Eating all dots ends the game
13. Scores are shown at game ending
14. Menus allow replay
15. Pausing
16. High scores are kept
17. Ghosts appear
18. Ghosts move
19. Ghosts damage Pacman
20. Procedural large dots appear
21. Large dots make ghosts edible for 10 seconds
22. Eating ghosts gives points
23. Ghosts spawn/respawn in defined area
24. After beating level load next level
25. Add simple Ai to ghosts