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Chris
248
src/kernel/minesweeper.c
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248
src/kernel/minesweeper.c
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#include "minesweeper.h"
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#include "graphics.h"
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#include "wm.h"
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#include <stdbool.h>
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#include <stddef.h>
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Window win_minesweeper;
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// Game constants
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#define GRID_WIDTH 10
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#define GRID_HEIGHT 10
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#define MINE_COUNT 10
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#define CELL_SIZE 20
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// Game state
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static int grid[GRID_HEIGHT][GRID_WIDTH]; // -1 = mine, 0-8 = adjacent mine count
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static bool revealed[GRID_HEIGHT][GRID_WIDTH];
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static bool flagged[GRID_HEIGHT][GRID_WIDTH];
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static bool game_over = false;
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static bool game_won = false;
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static int revealed_count = 0;
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// Helper: Random number generator (simple LCG)
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static uint32_t random_seed = 12345;
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static uint32_t random_next(void) {
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random_seed = random_seed * 1103515245 + 12345;
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return (random_seed / 65536) % 32768;
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}
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static void init_game(void) {
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// Clear arrays
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for (int y = 0; y < GRID_HEIGHT; y++) {
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for (int x = 0; x < GRID_WIDTH; x++) {
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grid[y][x] = 0;
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revealed[y][x] = false;
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flagged[y][x] = false;
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}
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}
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// Place mines randomly
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int mines_placed = 0;
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while (mines_placed < MINE_COUNT) {
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int x = random_next() % GRID_WIDTH;
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int y = random_next() % GRID_HEIGHT;
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if (grid[y][x] != -1) {
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grid[y][x] = -1;
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mines_placed++;
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}
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}
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// Calculate adjacent mine counts
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for (int y = 0; y < GRID_HEIGHT; y++) {
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for (int x = 0; x < GRID_WIDTH; x++) {
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if (grid[y][x] != -1) {
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int count = 0;
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for (int dy = -1; dy <= 1; dy++) {
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for (int dx = -1; dx <= 1; dx++) {
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int ny = y + dy;
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int nx = x + dx;
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if (ny >= 0 && ny < GRID_HEIGHT && nx >= 0 && nx < GRID_WIDTH) {
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if (grid[ny][nx] == -1) count++;
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}
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}
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}
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grid[y][x] = count;
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}
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}
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}
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game_over = false;
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game_won = false;
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revealed_count = 0;
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}
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static void reveal_cell(int x, int y);
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// Flood fill for empty cells
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static void flood_fill(int x, int y) {
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if (x < 0 || x >= GRID_WIDTH || y < 0 || y >= GRID_HEIGHT) return;
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if (revealed[y][x] || flagged[y][x]) return;
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if (grid[y][x] == -1) return;
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revealed[y][x] = true;
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revealed_count++;
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// If cell is empty, reveal adjacent cells
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if (grid[y][x] == 0) {
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for (int dy = -1; dy <= 1; dy++) {
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for (int dx = -1; dx <= 1; dx++) {
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flood_fill(x + dx, y + dy);
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}
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}
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}
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}
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static void reveal_cell(int x, int y) {
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if (x < 0 || x >= GRID_WIDTH || y < 0 || y >= GRID_HEIGHT) return;
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if (revealed[y][x] || flagged[y][x]) return;
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if (grid[y][x] == -1) {
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// Hit a mine - game over
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game_over = true;
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// Reveal all mines
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for (int yy = 0; yy < GRID_HEIGHT; yy++) {
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for (int xx = 0; xx < GRID_WIDTH; xx++) {
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if (grid[yy][xx] == -1) {
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revealed[yy][xx] = true;
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}
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}
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}
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} else if (grid[y][x] == 0) {
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// Empty cell - flood fill
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flood_fill(x, y);
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} else {
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// Numbered cell
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revealed[y][x] = true;
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revealed_count++;
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}
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// Check win condition
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if (revealed_count == (GRID_WIDTH * GRID_HEIGHT - MINE_COUNT)) {
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game_won = true;
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}
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}
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static void flag_cell(int x, int y) {
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if (x < 0 || x >= GRID_WIDTH || y < 0 || y >= GRID_HEIGHT) return;
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if (revealed[y][x]) return;
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flagged[y][x] = !flagged[y][x];
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}
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static void minesweeper_right_click(Window *win, int x, int y) {
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// x and y are relative to window content (0,0 is top-left of window)
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int grid_start_x = 10;
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int grid_start_y = 50;
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// Check grid cells
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if (x >= grid_start_x && x < grid_start_x + GRID_WIDTH * CELL_SIZE &&
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y >= grid_start_y && y < grid_start_y + GRID_HEIGHT * CELL_SIZE) {
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if (game_over || game_won) return;
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int cell_x = (x - grid_start_x) / CELL_SIZE;
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int cell_y = (y - grid_start_y) / CELL_SIZE;
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flag_cell(cell_x, cell_y);
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wm_paint();
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}
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}
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static void minesweeper_paint(Window *win) {
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// Background
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draw_rect(win->x + 4, win->y + 24, win->w - 8, win->h - 28, COLOR_LTGRAY);
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// Game status
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if (game_over) {
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draw_string(win->x + 10, win->y + 30, "Game Over!", COLOR_RED);
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} else if (game_won) {
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draw_string(win->x + 10, win->y + 30, "You Won!", COLOR_BLUE);
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} else {
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draw_string(win->x + 10, win->y + 30, "Minesweeper", COLOR_BLACK);
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}
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// Draw grid
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int grid_start_x = win->x + 10;
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int grid_start_y = win->y + 50;
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for (int y = 0; y < GRID_HEIGHT; y++) {
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for (int x = 0; x < GRID_WIDTH; x++) {
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int px = grid_start_x + x * CELL_SIZE;
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int py = grid_start_y + y * CELL_SIZE;
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if (revealed[y][x]) {
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// Revealed cell - sunken
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draw_bevel_rect(px, py, CELL_SIZE, CELL_SIZE, true);
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if (grid[y][x] == -1) {
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// Mine
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draw_string(px + 8, py + 6, "*", COLOR_RED);
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} else if (grid[y][x] > 0) {
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// Number
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char num[2] = { '0' + grid[y][x], 0 };
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draw_string(px + 8, py + 6, num, COLOR_BLACK);
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}
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// 0 = empty, nothing to draw
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} else {
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// Unrevealed cell - raised
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draw_bevel_rect(px, py, CELL_SIZE, CELL_SIZE, false);
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if (flagged[y][x]) {
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draw_string(px + 7, py + 6, "F", COLOR_RED);
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}
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}
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}
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}
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// Draw new game button
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int btn_y = grid_start_y + GRID_HEIGHT * CELL_SIZE + 10;
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draw_button(grid_start_x, btn_y, 90, 24, "New Game", false);
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}
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static void minesweeper_click(Window *win, int x, int y) {
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// x and y are relative to window content (0,0 is top-left of window)
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int grid_start_x = 10;
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int grid_start_y = 50;
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int btn_y = grid_start_y + GRID_HEIGHT * CELL_SIZE + 10;
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// Check "New Game" button
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if (x >= grid_start_x && x < grid_start_x + 90 &&
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y >= btn_y && y < btn_y + 24) {
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init_game();
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wm_paint();
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return;
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}
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// Check grid cells
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if (x >= grid_start_x && x < grid_start_x + GRID_WIDTH * CELL_SIZE &&
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y >= grid_start_y && y < grid_start_y + GRID_HEIGHT * CELL_SIZE) {
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if (game_over || game_won) return;
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int cell_x = (x - grid_start_x) / CELL_SIZE;
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int cell_y = (y - grid_start_y) / CELL_SIZE;
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reveal_cell(cell_x, cell_y);
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wm_paint();
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}
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}
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void minesweeper_init(void) {
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win_minesweeper.title = "Minesweeper";
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win_minesweeper.x = 250;
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win_minesweeper.y = 100;
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win_minesweeper.w = 240;
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win_minesweeper.h = 340;
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win_minesweeper.visible = false;
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win_minesweeper.focused = false;
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win_minesweeper.z_index = 0;
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win_minesweeper.paint = minesweeper_paint;
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win_minesweeper.handle_click = minesweeper_click;
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win_minesweeper.handle_right_click = minesweeper_right_click;
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// Initialize game
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init_game();
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}
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