| 1 | /* ncurses-minesweeper Copyright (c) 2020 Joshua 'joshuas3' Stockin |
| 2 | * <https://joshstock.in> |
| 3 | * <https://github.com/JoshuaS3/ncurses-minesweeper> |
| 4 | * |
| 5 | * This software is licensed and distributed under the terms of the MIT License. |
| 6 | * See the MIT License in the LICENSE file of this project's root folder. |
| 7 | * |
| 8 | * This comment block and its contents, including this disclaimer, MUST be |
| 9 | * preserved in all copies or distributions of this software's source. |
| 10 | */ |
| 11 |
|
| 12 | #include <stdlib.h> |
| 13 |
|
| 14 | #include "../state.h" |
| 15 | #include "../time.h" |
| 16 | #include "nearest_cells.h" |
| 17 |
|
| 18 | void begin_game(game_board *board) { |
| 19 | // open start |
| 20 | uint16_t s = board->current_cell; |
| 21 |
|
| 22 | int16_t *open_start_cells = list_nearby_cells(board, s); |
| 23 |
|
| 24 | for (int cell = 0; cell < 9; cell++) { |
| 25 | board->cells[open_start_cells[cell]].opened = 1; |
| 26 | board->cells[open_start_cells[cell]].is_bomb = 0; |
| 27 | } |
| 28 |
|
| 29 | // generate mines |
| 30 | int mines_generated = 0; |
| 31 | uint16_t end = board->width * board->height; |
| 32 |
|
| 33 | srand(time_us()); |
| 34 |
|
| 35 | while (mines_generated < board->mine_count) { |
| 36 | int n = rand() % end; |
| 37 | game_board_cell *x = &board->cells[n]; |
| 38 | if (!x->is_bomb && !x->opened) { |
| 39 | x->is_bomb = 1; |
| 40 | mines_generated++; |
| 41 | } |
| 42 | } |
| 43 |
|
| 44 | // get and label surrounding mine counts |
| 45 | for (int i = 0; i < end; i++) { |
| 46 | if (board->cells[i].is_bomb) continue; |
| 47 | int16_t *close_cells = list_nearby_cells(board, i); |
| 48 | for (int j = 0; j < 9; j++) { |
| 49 | int16_t close_cell = close_cells[j]; |
| 50 | if (close_cell != i && board->cells[close_cell].is_bomb) board->cells[i].surrounding_bomb_count++; |
| 51 | } |
| 52 | free(close_cells); |
| 53 | } |
| 54 |
|
| 55 | // recursively open start area |
| 56 | for (int cell = 0; cell < 9; cell++) { |
| 57 | if (board->cells[open_start_cells[cell]].surrounding_bomb_count == 0) |
| 58 | recursively_open_nearby_cells(board, open_start_cells[cell]); |
| 59 | } |
| 60 | free(open_start_cells); |
| 61 |
|
| 62 | // start timer |
| 63 | board->time = time_us(); |
| 64 |
|
| 65 | board->status = Playing; |
| 66 | } |
| 67 |
|
Index