/** Some nodes may have their biases updated. */
@Override
public void descend(McRunnable runnable) {
SearchNode node = getRoot();
assert node != null : "Fancy hash code: " + board.getFancyHash();
while (runnable.getBoard().getPasses() < 2) {
selectAndPlayMove(node, runnable);
final SearchNode child = table.findIfPresent(runnable.getBoard().getFancyHash());
if (child == null) {
return; // No child
}
if (child.getTotalRuns() > biasDelay && !child.biasUpdated()) {
child.updateBias(runnable);
}
node = child;
}
}
@Override
public void fakeDescend(McRunnable runnable, short... moves) {
runnable.copyDataFrom(board);
final SearchNode node = getRoot();
assert node != null : "Fancy hash code: " + board.getFancyHash();
for (final short move : moves) {
System.out.println("Passing " + move + " to runnable");
runnable.acceptMove(move);
final SearchNode child = table.findIfPresent(runnable.getBoard().getFancyHash());
if (child == null) {
return; // No child
}
if (child.getTotalRuns() > biasDelay && !child.biasUpdated()) {
child.updateBias(runnable);
}
}
}
/** Returns the root node (creating it if necessary). */
SearchNode getRoot() {
return table.findOrAllocate(board.getFancyHash());
}
/** Copies data from that (the player's real board) to the local board. */
public void copyDataFrom(Board that) {
board.copyDataFrom(that);
fancyHashes[board.getTurn()] = board.getFancyHash();
}
/**
* Accepts (plays on on this McRunnable's own board) the given move.
*
* @see edu.lclark.orego.core.Board#play(short)
*/
public void acceptMove(short p) {
final Legality legality = board.play(p);
assert legality == OK
: "Legality " + legality + " for move " + coords.toString(p) + "\n" + board;
fancyHashes[board.getTurn()] = board.getFancyHash();
}
