| ## Implementation approach | |
| We will use the Pygame library to create the game interface and handle user input. The game logic will be implemented using Python classes and data structures. | |
| ## File list | |
| - main.py | |
| - game.py | |
| ## Data structures and interfaces | |
| classDiagram | |
| class Game { | |
| -grid: List[List[int]] | |
| -score: int | |
| -game_over: bool | |
| +__init__() | |
| +reset_game() | |
| +move(direction: str) | |
| +is_game_over() bool | |
| +get_empty_cells() List[Tuple[int, int]] | |
| +add_new_tile() | |
| +get_score() int | |
| } | |
| class UI { | |
| -game: Game | |
| +__init__(game: Game) | |
| +draw_grid() | |
| +draw_score() | |
| +draw_game_over() | |
| +handle_input() | |
| } | |
| Game --> UI | |
| ## Program call flow | |
| sequenceDiagram | |
| participant M as Main | |
| participant G as Game | |
| participant U as UI | |
| M->>G: reset_game() | |
| M->>U: draw_grid() | |
| M->>U: draw_score() | |
| M->>U: handle_input() | |
| U->>G: move(direction) | |
| G->>G: add_new_tile() | |
| G->>U: draw_grid() | |
| G->>U: draw_score() | |
| G->>U: draw_game_over() | |
| G->>G: is_game_over() | |
| G->>G: get_empty_cells() | |
| G->>G: get_score() | |
| ## Anything UNCLEAR | |
| ... | |