**Wesley Kerfoot**4 years ago

**1 changed files**with

**222 additions**and

**0 deletions**

`@ -0,0 +1,222 @@` |
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`#! /usr/bin/env python3` |
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```
``` |
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`from itertools import product` |
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`from random import choices` |
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`from collections import deque` |
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`from sys import stdout` |
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```
``` |
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`import attr, cattr` |
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```
``` |
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`# Serialization helpers for persisting games` |
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`def serialize_board(board):` |
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` """` |
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` Returns a dict representation of the game board` |
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` """` |
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` return {` |
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` "cell_rows" : [[cattr.unstructure(cell) for cell in row] for row in board.cells],` |
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` "height" : board.height,` |
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` "width" : board.width,` |
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` "probability" : board.board_probability` |
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` }` |
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```
``` |
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`def deserialize_board(board_data):` |
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` """` |
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` Returns a Board object given a dict serialized from it` |
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` """` |
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` return Board(` |
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` cells=[[cattr.structure(cell, Cell) for cell in row]` |
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` for row in board_data.get("cell_rows", [])],` |
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` width=board_data.get("width", 8),` |
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` height=board_data.get("height", 8),` |
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` board_probability=board_data.get("probability", 0.10)` |
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` )` |
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```
``` |
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`def gen_board(width, height, p):` |
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` """` |
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` Generate a fresh board` |
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` """` |
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` return [` |
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` [Cell((w, h), is_mine=gen_cell(p)) for w in range(width)] for` |
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` h in range(height)` |
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` ]` |
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```
``` |
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`def gen_cell(probability):` |
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` """` |
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` Generate a single cell with probability p that it is a mine` |
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` True = has a mine` |
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` False = is clear` |
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` """` |
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` return choices((True, False), (probability, (1 - probability)))[0]` |
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```
``` |
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`@attr.s` |
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`class Cell:` |
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` location = attr.ib()` |
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` is_mine = attr.ib(default=False)` |
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```
``` |
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` @property` |
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` def x(self):` |
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` return self.location[0]` |
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```
``` |
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` @property` |
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` def y(self):` |
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` return self.location[1]` |
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```
``` |
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`@attr.s` |
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`class Board:` |
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` height = attr.ib(default=20)` |
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` width = attr.ib(default=20)` |
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` cells = attr.ib(factory=list)` |
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` board_probability = attr.ib(default=0.10)` |
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```
``` |
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` def __iter__(self):` |
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` return iter(self.cells)` |
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```
``` |
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` def print_board(self):` |
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` for y in range(self.height):` |
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` for x in range(self.width):` |
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` stdout.write("x" if self.get_cell(x, y).is_mine else "0")` |
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` stdout.write("\n")` |
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```
``` |
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` def show_board(self):` |
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` """` |
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` Convert to a representation we can show on the frontend` |
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` """` |
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` return [` |
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` [(0, self.get_cell(x, y).is_mine) for x in range(self.width)]` |
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` for y in range(self.height)` |
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` ]` |
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```
``` |
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```
``` |
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` def get_cell(self, x, y):` |
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` """` |
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` Get the value of an individual cell` |
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` """` |
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` # Handle boundary conditions` |
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` if (x >= self.width or` |
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` y >= self.height or` |
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` x < 0 or y < 0):` |
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` return None` |
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` try:` |
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` return self.cells[y][x]` |
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` except IndexError:` |
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` return None` |
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```
``` |
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` def get_adjacent(self, x, y):` |
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` """` |
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` Get a list of all cells adjacent to this location` |
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` """` |
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` return [` |
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` self.get_cell(x, y) for x, y in [` |
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` (x+1, y), (x+1, y+1), (x+1, y-1),` |
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` (x, y+1), (x, y-1),` |
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` (x-1, y+1), (x-1, y), (x-1, y-1)` |
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` ]` |
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` if self.get_cell(x, y)` |
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` ]` |
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```
``` |
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` def count_adjacent(self, cells):` |
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` """` |
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` How many mines are adjacent to this cell?` |
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` """` |
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` return sum([c.is_mine for c in cells])` |
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```
``` |
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` def flip_cell(self, x, y):` |
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` """` |
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` Flip over a cell` |
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` Three potential cases:` |
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` Uncovering a mine` |
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` A clear cell with 1 or more adjacent mines` |
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` A clear cell with no adjacent mines, then we keep clearing` |
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` """` |
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` clicked_cell = self.get_cell(x, y)` |
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```
``` |
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` if clicked_cell is None:` |
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` return []` |
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```
``` |
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` if clicked_cell.is_mine:` |
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` # if it's a mine, we're done` |
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` return [(0, clicked_cell)]` |
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```
``` |
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` cells = deque([clicked_cell])` |
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` uncovered = []` |
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` processed_locations = set()` |
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```
``` |
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` # do a breadth-first search of the surrounding cells` |
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` while cells:` |
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` for cell in list(cells):` |
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` cells.popleft()` |
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` adjacent_cells = self.get_adjacent(cell.x, cell.y)` |
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` num_adjacent = self.count_adjacent(adjacent_cells)` |
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```
``` |
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` if not (cell.location in processed_locations):` |
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` if not cell.is_mine:` |
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` # This is the mine we "clicked" on` |
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` uncovered.append((num_adjacent, cell))` |
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```
``` |
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` # add to the set of processed cells` |
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` processed_locations.add(cell.location)` |
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```
``` |
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` # skip processing the surrounding ones` |
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` # if it has at least one adjacent mine` |
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` if num_adjacent > 0:` |
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` continue` |
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` else:` |
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` # Process surrounding cells that themselves have 0 adjacent mines` |
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` # This adds them to the queue of cells to be processed` |
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` cells.extend([c for c in adjacent_cells if self.count_adjacent(self.get_adjacent(*c.location)) == 0])` |
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```
``` |
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` # Add the surrounding adjacent cells to the uncovered list` |
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` for cell in adjacent_cells:` |
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` adjacent_count = self.count_adjacent(self.get_adjacent(*cell.location))` |
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```
``` |
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` # small optimization to prevent it from processing mines` |
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` if cell.is_mine:` |
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` processed_locations.add(cell.location)` |
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```
``` |
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` elif adjacent_count > 0 and (not (cell.location in processed_locations)):` |
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` processed_locations.add(cell.location)` |
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` uncovered.append((adjacent_count, cell))` |
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` return uncovered` |
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```
``` |
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`# Helper functions to handle playing the game` |
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`def click_cell(game_board, display_board, x, y):` |
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` """` |
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` Game board: the full board object` |
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` Display board: the board displayed to users` |
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` x, y: coordinates ot the cell to be uncovered` |
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` Mutates `display_board` and returns it, or False if it is a mine.` |
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` """` |
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` uncovered = game_board.flip_cell(x, y)` |
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` for cell in uncovered:` |
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` if cell[1].is_mine:` |
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` return False` |
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```
``` |
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` for adjacent_num, cell in uncovered:` |
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` display_board[cell.y][cell.x] = (adjacent_num, cell.is_mine)` |
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```
``` |
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` return display_board` |
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```
``` |
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`def won(game_board, display_board):` |
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` """` |
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` Determine if the only remaining uncovered cells are mines` |
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` This determins if the player has won` |
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` """` |
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` won = True` |
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` for y, row in enumerate(display_board):` |
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` for x, cell in enumerate(row):` |
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` if (cell is None) and (not game_board.get_cell(x, y).is_mine):` |
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` # if it's uncovered and it's not a mine` |
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` # then they haven't won yet` |
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` won = False` |
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` return won` |
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```
``` |
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`def new_board(x=8, y=8, p=0.10):` |
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` """` |
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` Generate a new game board, and display board` |
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` The game board never changes` |
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` The display board gets updated each time a cell is revealed` |
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` """` |
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` game_board = Board(cells=gen_board(x, y, p), width=x, height=y, board_probability=p)` |
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` display_board = [[None for _ in range(x)] for _ in range(y)]` |
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```
``` |
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` return (game_board, display_board)` |

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