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Tempo di connessione!

Basta chiedere attraverso altre pagine perché sei arrivato nel posto giusto, abbiamo la risposta che stai cercando senza complicarti.

Soluzione:

MaxGayne

Questo bot assegna un punteggio a ogni posizione, basato principalmente sulla lunghezza delle parti collegate. Esamina 3 mosse in profondità, ispezionando le 3 mosse migliori in ogni fase, e sceglie quella con il punteggio massimo previsto.

package connectn.players;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class MaxGayne extends Player {
    private static final int PLAYERS = 3;

    private static class Result {
        protected final int[] score;
        protected int lastCol;

        public Result(int[] score, int lastCol) {
            super();
            this.score = score;
            this.lastCol = lastCol;
        }

        public Result() {
            this(new int[PLAYERS], -1);
        }

        public Result(Result other) {
            this(new int[PLAYERS], other.lastCol);
            System.arraycopy(other.score, 0, this.score, 0, PLAYERS);
        }

        public int getRelativeScore(int player) {
            int max = Integer.MIN_VALUE;
            for (int i = 0; i < PLAYERS; ++ i) {
                if (i != player && score[i] > max) {
                    max = score[i];
                }
            }
            return score[player] - max;
        }
    }

    private static class Board extends Result {
        private final int cols;
        private final int rows;
        private final int[] data;
        private final int[] used;

        public Board(int cols, int rows) {
            super();
            this.cols = cols;
            this.rows = rows;
            this.data = new int[cols * rows];
            Arrays.fill(this.data, -1);
            this.used = new int[cols];
        }

        public Board(Board other) {
            super(other);
            this.cols = other.cols;
            this.rows = other.rows;
            this.data = new int[cols * rows];
            System.arraycopy(other.data, 0, this.data, 0, this.data.length);
            this.used = new int[cols];
            System.arraycopy(other.used, 0, this.used, 0, this.used.length);
        }

        private void updatePartScore(int player, int length, int open, int factor) {
            switch (length) {
                case 1:
                    score[player] += factor * open;
                    break;
                case 2:
                    score[player] += factor * (100 + open * 10);
                    break;
                case 3:
                    score[player] += factor * (10_000 + open * 1_000);
                    break;
                default:
                    score[player] += factor * ((length - 3) * 1_000_000 + open * 100_000);
                    break;
            }
        }

        private void updateLineScore(int col, int row, int colOff, int rowOff, int length, int factor) {
            int open = 0;
            int player = -1;
            int partLength = 0;
            for (int i = 0; i < length; ++ i) {
                int newPlayer = data[(col + i * colOff) * rows + row + i * rowOff];
                if (newPlayer < 0) {
                    if (player < 0) {
                        if (i == 0) {
                            open = 1;
                        }
                    } else {
                        updatePartScore(player, partLength, open + 1, factor);
                        open = 1;
                        player = newPlayer;
                        partLength = 0;
                    }
                } else {
                    if (newPlayer == player) {
                        ++ partLength;
                    } else {
                        if (player >= 0) {
                            updatePartScore(player, partLength, open, factor);
                            open = 0;
                        }
                        player = newPlayer;
                        partLength = 1;
                    }
                }
            }
            if (player >= 0) {
                updatePartScore(player, partLength, open, factor);
            }
        }

        private void updateIntersectionScore(int col, int row, int factor) {
            updateLineScore(col, 0, 0, 1, rows, factor);
            updateLineScore(0, row, 1, 0, cols, factor);
            if (row > col) {
                updateLineScore(0, row - col, 1, 1, Math.min(rows - row, cols), factor);
            } else {
                updateLineScore(col - row, 0, 1, 1, Math.min(cols - col, rows), factor);
            }
            if (row > cols - col - 1) {
                updateLineScore(cols - 1, row - (cols - col - 1), -1, 1, Math.min(rows - row, cols), factor);
            } else {
                updateLineScore(col + row, 0, -1, 1, Math.min(col + 1, rows), factor);
            }
        }

        private void updatePiece(int player, int col, int row) {
            updateIntersectionScore(col, row, -1);
            data[col * rows + row] = player;
            ++ used[col];
            lastCol = col;
            updateIntersectionScore(col, row, 1);
        }

        public Board updatePiece(int player, int col) {
            int row = used[col];
            if (row >= rows) {
                return null;
            } else {
                Board result = new Board(this);
                result.updatePiece(player, col, row);
                return result;
            }
        }

        private void updateBoard(int[][] board) {
            for (int col = 0; col < cols; ++ col) {
                for (int row = 0; row < rows; ++ row) {
                    int oldPlayer = data[col * rows + row];
                    int newPlayer = board[col][row] - 1;
                    if (newPlayer < 0) {
                        if (oldPlayer < 0) {
                            break;
                        } else {
                            throw new RuntimeException("[" + col + ", " + row + "] == "  + oldPlayer + " >= 0");
                        }
                    } else {
                        if (oldPlayer < 0) {
                            updatePiece(newPlayer, col, row);
                        } else if (newPlayer != oldPlayer) {
                            throw new RuntimeException("[" + col + ", " + row + "] == "  + oldPlayer + " >= " + newPlayer);
                        }
                    }
                }
            }
        }

        private Result bestMove(int depth, int player) {
            List boards = new ArrayList<>();
            for (int col = 0; col < cols; ++ col) {
                Board board = updatePiece(player, col);
                if (board != null) {
                    boards.add(board);
                }
            }
            if (boards.isEmpty()) {
                return null;
            }
            Collections.sort(boards, (o1, o2) -> Integer.compare(o2.getRelativeScore(player), o1.getRelativeScore(player)));
            if (depth <= 1) {
                return new Result(boards.get(0).score, boards.get(0).lastCol);
            }
            List results = new ArrayList<>();
            for (int i = 0; i < 3 && i < boards.size(); ++ i) {
                Board board = boards.get(i);
                Result result = board.bestMove(depth - 1, (player + 1) % PLAYERS);
                if (result == null) {
                    results.add(new Result(board.score, board.lastCol));
                } else {
                    results.add(new Result(result.score, board.lastCol));
                }
            }
            Collections.sort(results, (o1, o2) -> Integer.compare(o2.getRelativeScore(player), o1.getRelativeScore(player)));
            return results.get(0);
        }
    }

    private Board board = null;

    @Override
    public int makeMove() {
        if (board == null) {
            int[][] data = getBoard();
            board = new Board(data.length, data[0].length);
            board.updateBoard(data);
        } else {
            board.updateBoard(getBoard());
        }

        Result result = board.bestMove(3, getID() - 1);
        return result == null ? -1 : result.lastCol;
    }
}

Robot di fila

Guarda in tutte le direzioni e determina la colonna ottimale. Cerca di collegare i suoi pezzi, evitando che gli avversari facciano lo stesso.

package connectn.players;

import connectn.game.Game;
import java.util.ArrayList;
import java.util.List;

public class RowBot extends Player {

    @Override
    public int makeMove() {
        int[][] board = getBoard();
        int best = -1;
        int bestScore = -10;
        for (int col = 0; col < board.length; col++) {
            if (ensureValidMove(col)) {
                int score = score(board, col, false);
                score -= score(board, col, true);
                if (score > bestScore) {
                    bestScore = score;
                    best = col;
                }
            }
        }
        return best;
    }

    private int score(int[][] board, int col, boolean simulateMode) {
        int me = getID();
        int row = getLowestEmptyRow(board, col);
        List scores = new ArrayList<>();
        if (!simulateMode) {
            scores.add(getScoreVertical(board, col, row));
        } else {
            row += 1;
        }
        scores.addAll(getScoreHorizontal(board, col, row));
        scores.addAll(getScoreDiagonal(board, col, row));
        int score = 0;
        for (Score s : scores) {
            if (s.player == me) {
                score += s.points > 2 ? 100 : s.points * 5;
            } else if (s.player != Game.EMPTY_CELL) {
                score += s.points > 2 ? 50 : 0;
            } else {
                score += 1;
            }
        }
        return score;
    }

    private Score getScoreVertical(int[][] board, int col, int row) {
        return getScore(board, col, row, 0, -1);
    }

    private List getScoreHorizontal(int[][] board, int col, int row) {
        List scores = new ArrayList<>();

        Score left = getScore(board, col, row, -1, 0);
        Score right = getScore(board, col, row, 1, 0);
        if (left.player == right.player) {
            left.points += right.points;
            scores.add(left);
        } else {
            scores.add(left);
            scores.add(right);
        }
        return scores;
    }

    private List getScoreDiagonal(int[][] board, int col, int row) {
        List scores = new ArrayList<>();

        Score leftB = getScore(board, col, row, -1, -1);
        Score rightU = getScore(board, col, row, 1, 1);
        Score leftBottomToRightUp = leftB;
        if (leftB.player == rightU.player) {
            leftBottomToRightUp.points += rightU.points;
        } else if (leftB.points < rightU.points || leftB.player == Game.EMPTY_CELL) {
            leftBottomToRightUp = rightU;
        }

        Score leftU = getScore(board, col, row, -1, 1);
        Score rightB = getScore(board, col, row, 1, -1);
        Score rightBottomToLeftUp = leftU;
        if (leftU.player == rightB.player) {
            rightBottomToLeftUp.points += rightB.points;
        } else if (leftU.points < rightB.points || leftU.player == Game.EMPTY_CELL) {
            rightBottomToLeftUp = rightB;
        }

        if (leftBottomToRightUp.player == rightBottomToLeftUp.player) {
            leftBottomToRightUp.points += rightBottomToLeftUp.points;
            scores.add(leftBottomToRightUp);
        } else {
            scores.add(leftBottomToRightUp);
            scores.add(rightBottomToLeftUp);
        }
        return scores;
    }

    private Score getScore(int[][] board, int initCol, int initRow, int colOffset, int rowOffset) {
        Score score = new Score();
        outerLoop: for (int c = initCol + colOffset;; c += colOffset) {
            for (int r = initRow + rowOffset;; r += rowOffset) {
                if (outside(c, r) || board[c][r] == Game.EMPTY_CELL) {
                    break outerLoop;
                }
                if (score.player == Game.EMPTY_CELL) {
                    score.player = board[c][r];
                }

                if (score.player == board[c][r]) {
                    score.points++;
                } else {
                    break outerLoop;
                }

                if (rowOffset == 0) {
                    break;
                }
            }
            if (colOffset == 0) {
                break;
            }
        }
        return score;
    }

    private boolean outside(int col, int row) {
        return !boardContains(col, row);
    }

    private int getLowestEmptyRow(int[][] board, int col) {
        int[] rows = board[col];
        for (int row = 0; row < rows.length; row++) {
            if (rows[row] == Game.EMPTY_CELL){
                return row;
            }
        }
        return -1;
    }

    private class Score {
        private int player = Game.EMPTY_CELL;
        private int points = 0;
    }
}

Robot di un solo gioco

Questo bot ha un solo gioco: posizionare il suo pezzo nella cella più a sinistra che è valida. Stranamente, riesce a fare abbastanza bene 😉

static class OnePlayBot extends Player {
    @Override
    int makeMove() {
        int attemptedMove = 0;

        for (int i = 0; i < getBoardSize()[0]; i++)
            if (ensureValidMove(i)) {
                attemptedMove = i;
                break;
            }

        return attemptedMove;
    }
}

Alla fine di tutto puoi trovare le illustrazioni di altri amministratori di sistema, hai anche la possibilità di inserire le tue se vuoi.



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