feat: initial commit

2 files changed, 92 insertions, 0 deletions

diff --git a/src/board.h b/src/board.h
new file mode 100644
index 0000000..442b03d
--- /dev/null
+++ b/src/board.h
@@ -0,0 +1,21 @@
+#define TILE_SIZE 5
+#define BOARD_WIDTH 6
+#define BOARD_BYTES TILE_SIZE * (BOARD_WIDTH * BOARD_WIDTH)
+
+int direction_increments[] = {
+  - TILE_SIZE * BOARD_WIDTH + 2,
+    TILE_SIZE               + 2,
+    TILE_SIZE * BOARD_WIDTH - 2,
+  - TILE_SIZE               - 2
+};
+
+// Board
+void initialize_board(char* board);
+
+void print_board(char* board);
+
+// Moves
+int check_allowed_tile(char* tile, int position, char* board);
+
+void place_tile(char* tile, int position, char* board);
+
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..71ae7f3
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,71 @@
+#include "board.h"
+
+
+int check_allowed_tile(char* tile, int position, char* board) {
+  for (int i = 0; i < 4; i++) {
+    int index = (position * TILE_SIZE + i) + direction_increments[i];
+    printf("Checking board index %i\n", index);
+    // TODO: board should have sentinel row/column
+    if (index >= 0 && index < BOARD_BYTES) {
+      char neighboring_edge = board[index];
+      if (neighboring_edge > 0 && neighboring_edge != tile[i] && neighboring_edge != '_') {
+        printf("Failed on edge %i (%c). Neighboring edge is %c\n", i, tile[i], neighboring_edge);
+        return 0;
+      }
+    }
+  }
+  return 1;
+}
+
+void place_tile(char* tile, int position, char* board) {
+  if (!check_allowed_tile(tile, position, board)) {
+    printf("Could not place the tile!");
+    return;
+  }
+  for (int i = 0; i < TILE_SIZE; i++) {
+    board[position * TILE_SIZE + i] = tile[i];
+  }
+}
+
+void print_board(char* board) {
+  for (int row = 0; row < BOARD_WIDTH; row++) {
+    for (int tile = 0; tile < BOARD_WIDTH; tile++) {
+      printf("_%c_", board[TILE_SIZE * (row * BOARD_WIDTH + tile)]);
+    }
+    printf("\n");
+    for (int tile = 0; tile < BOARD_WIDTH; tile++) {
+      printf(
+          "%c%c%c",
+          board[TILE_SIZE * (row * BOARD_WIDTH + tile) + 3],
+          board[TILE_SIZE * (row * BOARD_WIDTH + tile) + 4],
+          board[TILE_SIZE * (row * BOARD_WIDTH + tile) + 1]
+      );
+    }
+    printf("\n");
+    for (int tile = 0; tile < BOARD_WIDTH; tile++) {
+      printf("_%c_", board[TILE_SIZE * (row * BOARD_WIDTH + tile) + 2]);
+    }
+    printf("\n");
+  }
+}
+
+void initialize_board(char* board) {
+  for (int i = 0; i < BOARD_BYTES; i++) {
+    board[i] = '_';
+  }
+}
+
+int main() {
+  // Board
+  char board[BOARD_BYTES];
+  initialize_board(board);
+
+  place_tile("ABCDE", 7, board);
+  place_tile("FGHBJ", 8, board);
+  place_tile("FGHGJ", 9, board);
+  place_tile("FGAGJ", 1, board);
+
+  print_board(board);
+
+  return 0;
+}