MCTS - backpropagate method of TreeSearch class

mctsbackpropagate.js

backpropagate(node, result) {
    let tmpNode = node;

    while(tmpNode !== null) {
        tmpNode.state.visits++;

        if (result != tmpNode.state.board.DRAW) {
            if (tmpNode.state.player === result) {
                tmpNode.state.wins++;
            }
            else {
                tmpNode.state.wins--;
            }
        }

        tmpNode = tmpNode.parent;
    }
}