this.state = {
moves: [],
board: Array(9).fill(""),
- next_player: "X",
+ team_to_play: "X",
};
+ this.teams = ["X", "O"];
}
/* Returns true if move was legal and added, false otherwise. */
- add_move(square) {
+ add_move(player, square) {
+
+ const state = this.state;
+ const result = super.add_move(player, square);
+
+ /* If the generic Game class can reject this move, then we don't
+ * need to look at it any further. */
+ if (! result.legal)
+ return result;
+
/* Cannot move to an occupied square. */
- if (this.state.board[square])
- return false;
+ if (state.board[square])
+ {
+ return { legal: false,
+ message: "Square is already occupied" };
+ }
- this.state.board[square] = this.state.next_player;
- this.state.moves.push(square);
+ state.board[square] = state.team_to_play;
+ state.moves.push(square);
- if (this.state.next_player === "X")
- this.state.next_player = "O";
+ if (state.team_to_play === "X")
+ state.team_to_play = "O";
else
- this.state.next_player = "X";
+ state.team_to_play = "X";
- return true;
+ return { legal: true };
}
}