public void expand() {
Node[] possibles = new Node[4];
int possCount = 0;
for (Node n : gameState.getPacman().current.adj) {
if (!n.equals(prev)) {
possibles[possCount++] = n;
}
}
int nActions = possCount;
children = new TreeNode[nActions];
for (int i = 0; i < nActions; i++) {
Node target = possibles[i];
GameStateInterface nextGs = gameState.copy();
nextGs.next(
Utilities.getWrappedDirection(gameState.getPacman().current, target, gameState.getMaze()),
ghosts.getActions(gameState));
children[i] = new TreeNode(nextGs, gameState.getPacman().current);
}
}
