public GameMove getMove(GameState state, String lastMove) {
DomineeringState board = (DomineeringState) state;
homeSym = board.homeSym;
awaySym = board.awaySym;
emptySym = board.emptySym;
isHome = state.who == GameState.Who.HOME; // HOME: true, AWAY: false
if (isHome) {
MAX_DEPTH = 6;
if (board.numMoves >= 6) MAX_DEPTH = 8;
if (board.numMoves >= 12) MAX_DEPTH = 10;
if (board.numMoves >= 14) MAX_DEPTH = 12;
} else {
MAX_DEPTH = 7;
if (board.numMoves >= 6) MAX_DEPTH = 9;
if (board.numMoves >= 12) MAX_DEPTH = 11;
if (board.numMoves >= 14) MAX_DEPTH = 13;
}
Move[] stack = new Move[MAX_DEPTH + 1];
init(stack);
if (isHome == true) {
if (board.numMoves == 0) {
Move[] temp = new Move[4];
temp[0] = new Move(1, 2, 1, 3);
temp[1] = new Move(1, 4, 1, 5);
temp[2] = new Move(6, 2, 6, 3);
temp[3] = new Move(6, 4, 6, 5);
Random rnd = new Random();
return temp[rnd.nextInt(4)];
} else if (board.numMoves == 2) {
Map map = new HashMap();
Scanner sc;
try {
sc = new Scanner(new File("home3.txt"));
while (sc.hasNextLine()) {
String s = sc.nextLine();
String[] sp = s.split("\\s+");
long key = Long.parseLong(sp[0]);
Move value =
new Move(
Integer.parseInt(sp[1]),
Integer.parseInt(sp[2]),
Integer.parseInt(sp[3]),
Integer.parseInt(sp[4]));
map.put(key, value);
}
long hash = new Board(board.board, isHome, "alphabetatt").getHashKey();
Move rtn = (Move) map.get(hash);
if (rtn != null) return rtn;
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} else {
if (board.numMoves == 1) {
Map map = new HashMap();
Scanner sc;
try {
sc = new Scanner(new File("away2.txt"));
while (sc.hasNextLine()) {
String s = sc.nextLine();
String[] sp = s.split("\\s+");
long key = Long.parseLong(sp[0]);
Move value =
new Move(
Integer.parseInt(sp[1]),
Integer.parseInt(sp[2]),
Integer.parseInt(sp[3]),
Integer.parseInt(sp[4]));
map.put(key, value);
}
long hash = new Board(board.board, isHome, "alphabetatt").getHashKey();
Move rtn = (Move) map.get(hash);
if (rtn != null) return rtn;
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
long start = System.currentTimeMillis();
alphabetaTT(board.board, 0, Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY, isHome, stack);
long end = System.currentTimeMillis();
total += (end - start);
System.out.printf(
"%s %3d Time: %-4d Total:%d\n", stack[0], (int) stack[0].score, (end - start), total);
tt.print();
System.out.println("Move: " + board.numMoves);
return stack[0];
}
public void alphabetaTT(char[][] map, int d, double a, double b, boolean isHome, Move[] stack) {
double ev_tem = 0;
ev_tem = ev2(map, isHome);
if (d == MAX_DEPTH || Math.abs(ev_tem) == MAX_SCORE) {
stack[d].score = ev_tem;
return;
}
Board board = new Board(map, isHome, "alphabetatt");
TTEntry tte = tt.getEntry(board.getHashKey());
if (tte != null && tte.getDepth() <= d) {
if (tte.getType() == TTEntry.NT.EXACT) {
stack[d].score = tte.getScore();
return;
}
if (tte.getType() == TTEntry.NT.LOWERBOUND && tte.getScore() > a) a = tte.getScore();
else if (tte.getType() == TTEntry.NT.UPPERBOUNT && tte.getScore() < b) b = tte.getScore();
if (a >= b) {
stack[d].score = tte.getScore();
return;
}
}
if (board.getSize() == 0) System.out.println(isHome + "\t" + d);
Move move;
if (isHome) {
double v = Double.NEGATIVE_INFINITY;
while (board.hasNext()) {
if (FIRST_LAYER_DEBUG == 1 && d == 0)
System.out.println("Home: 0 Total: " + board.getSize());
move = board.next();
map[move.row1][move.col1] = homeSym;
map[move.row2][move.col2] = homeSym;
if (d + 1 == MAX_DEPTH) {
stack[d + 1].set(move.row1, move.col1, move.row2, move.col2);
}
alphabetaTT(map, d + 1, a, b, false, stack);
if (stack[d + 1].score > v) {
v = stack[d + 1].score;
stack[d].set(move.row1, move.col1, move.row2, move.col2, v);
}
map[move.row1][move.col1] = emptySym;
map[move.row2][move.col2] = emptySym;
a = Math.max(a, stack[d].score);
if (stack[d].score >= b || stack[d].score == MAX_SCORE) return;
}
if (stack[d].score < a)
tt.store(new TTEntry(board.getHashKey(), stack[d].score, TTEntry.NT.LOWERBOUND, d));
else if (stack[d].score > b)
tt.store(new TTEntry(board.getHashKey(), stack[d].score, TTEntry.NT.UPPERBOUNT, d));
return;
} else {
double v = Double.POSITIVE_INFINITY;
while (board.hasNext()) {
if (FIRST_LAYER_DEBUG == 1 && d == 0)
System.out.println("Away: 0 Total: " + board.getSize());
move = board.next();
map[move.row1][move.col1] = awaySym;
map[move.row2][move.col2] = awaySym;
if (d + 1 == MAX_DEPTH) {
stack[d + 1].set(move.row1, move.col1, move.row2, move.col2);
}
alphabetaTT(map, d + 1, a, b, true, stack);
if (stack[d + 1].score < v) {
v = stack[d + 1].score;
stack[d].set(move.row1, move.col1, move.row2, move.col2, v);
}
map[move.row1][move.col1] = emptySym;
map[move.row2][move.col2] = emptySym;
b = Math.min(b, stack[d].score);
if (stack[d].score <= a || stack[d].score == -MAX_SCORE) return;
}
if (stack[d].score < a)
tt.store(new TTEntry(board.getHashKey(), stack[d].score, TTEntry.NT.LOWERBOUND, d));
else if (stack[d].score > b)
tt.store(new TTEntry(board.getHashKey(), stack[d].score, TTEntry.NT.UPPERBOUNT, d));
return;
}
}