jeu de la vie

src/game_core.c

@@ -0,0 +1,81 @@
+#include "game_core.h"
+#include <stdlib.h>
+
+const int directions[8][2] = {{-1, -1}, {-1, 0}, {-1, 1}, {0, -1},
+                              {0, 1},   {1, -1}, {1, 0},  {1, 1}};
+
+const uint32_t colors[2] = {BLACK, WHITE};
+
+Board init_board(size_t width, size_t height, int random) {
+  Board board = {NULL, width, height};
+  board.pixels = malloc(height * sizeof(uint32_t *));
+  for (size_t y = 0; y < height; y++) {
+
+    board.pixels[y] = malloc(width * sizeof(uint32_t));
+    for (size_t x = 0; x < width; x++) {
+      if (random)
+        board.pixels[y][x] = colors[rand() % 2];
+      else
+        board.pixels[y][x] = BLACK;
+    }
+  }
+  return board;
+}
+
+void free_board(Board board) {
+  for (size_t y = 0; y < board.height; y++)
+    free(board.pixels[y]);
+  free(board.pixels);
+}
+
+Board copy_board(Board board) {
+  Board copy = init_board(board.width, board.height, 0);
+  for (size_t x = 0; x < board.width; x++) {
+    for (size_t y = 0; y < board.height; y++) {
+      copy.pixels[y][x] = board.pixels[y][x];
+    }
+  }
+  return copy;
+}
+
+void display_board(Board board) {
+  for (size_t y = 0; y < board.height; y++) {
+    for (size_t x = 0; x < board.width; x++) {
+      printf("%c", board.pixels[y][x] == BLACK ? ' ' : 'X');
+    }
+    puts("");
+  }
+}
+
+int count_adjacent(Board board, size_t x, size_t y) {
+  size_t i;
+  int w, h;
+  uint8_t count = 0;
+  for (i = 0; i < 8; i++) {
+    w = x + directions[i][1];
+    h = y + directions[i][0];
+    if (!((w < 0 || w >= (int)board.width) ||
+          (h < 0 || h >= (int)board.height)))
+      if (board.pixels[h][w] == WHITE)
+        count++;
+  }
+  return count;
+}
+
+Board process_game(Board board) {
+  Board new_board = copy_board(board);
+  size_t x, y;
+  uint8_t count = 0;
+  for (y = 0; y < board.height; y++) {
+    for (x = 0; x < board.width; x++) {
+      count = count_adjacent(board, x, y);
+      if (board.pixels[y][x] == BLACK && count == 3) {
+        new_board.pixels[y][x] = WHITE;
+      } else if (board.pixels[y][x] == WHITE && count != 2 && count != 3) {
+        new_board.pixels[y][x] = BLACK;
+      }
+    }
+  }
+  free_board(board);
+  return new_board;
+}