seven.java

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package russiagame;

public class Seven extends Root {
    private GameTable gTable;
    private int x, y;
    private int direct = 1;
    private int[] store;

    public Seven() {
        store = new int[15];
    }

    public boolean begin() {
        if ( (gTable.myTable[ (gTable.x - 1) / 2][1] == 0) &&
            (gTable.myTable[ (gTable.x - 1) / 2 + 1][0] == 0) &&
            (gTable.myTable[ (gTable.x - 1) / 2 + 1][1] == 0) &&
            (gTable.myTable[ (gTable.x - 1) / 2 + 2][1] == 0)) {
            x = (gTable.x - 1) / 2;
            y = 0;
            gTable.myTable[x][y + 1] = 1;
            gTable.myTable[x + 1][y] = 1;
            gTable.myTable[x + 1][y + 1] = 1;
            gTable.myTable[x + 2][y + 1] = 1;
            return true;
        }
        else {
            return false;
        }
    }

    public boolean down() {
        switch (direct) {
            case 1:
                if (y <= gTable.y - 3) {
                    store[0] = gTable.myTable[x][y + 2];
                    store[1] = gTable.myTable[x + 1][y + 2];
                    store[2] = gTable.myTable[x + 2][y + 2];
                    if (isGo(3)) {
                        gTable.myTable[x + 1][y] = 0;
                        gTable.myTable[x][y + 1] = 0;
                        gTable.myTable[x + 2][y + 1] = 0;
                        gTable.myTable[x][y + 2] = 1;
                        gTable.myTable[x + 1][y + 2] = 1;
                        gTable.myTable[x + 2][y + 2] = 1;
                        y += 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 2:
                if (y <= gTable.y - 4) {
                    store[0] = gTable.myTable[x][y + 3];
                    store[1] = gTable.myTable[x + 1][y + 2];
                    if (isGo(2)) {
                        gTable.myTable[x][y] = 0;
                        gTable.myTable[x + 1][y + 1] = 0;
                        gTable.myTable[x][y + 3] = 1;
                        gTable.myTable[x + 1][y + 2] = 1;
                        y += 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 3:
                if (y <= gTable.y - 3) {
                    store[0] = gTable.myTable[x][y + 1];
                    store[1] = gTable.myTable[x + 1][y + 2];
                    store[2] = gTable.myTable[x + 2][y + 1];
                    if (isGo(3)) {
                        gTable.myTable[x][y] = 0;
                        gTable.myTable[x + 1][y] = 0;
                        gTable.myTable[x + 2][y] = 0;
                        gTable.myTable[x][y + 1] = 1;
                        gTable.myTable[x + 1][y + 2] = 1;
                        gTable.myTable[x + 2][y + 1] = 1;
                        y += 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 4:
                if (y <= gTable.y - 4) {
                    store[0] = gTable.myTable[x][y + 2];
                    store[1] = gTable.myTable[x + 1][y + 3];
                    if (isGo(2)) {
                        gTable.myTable[x + 1][y] = 0;
                        gTable.myTable[x][y + 1] = 0;
                        gTable.myTable[x][y + 2] = 1;
                        gTable.myTable[x + 1][y + 3] = 1;
                        y += 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            default:
                return false;
        }
    }

    public boolean left() {
        switch (direct) {
            case 1:
                if (x >= 1) {
                    store[0] = gTable.myTable[x][y];
                    store[1] = gTable.myTable[x - 1][y + 1];
                    if (isGo(2)) {
                        gTable.myTable[x + 1][y] = 0;
                        gTable.myTable[x + 2][y + 1] = 0;
                        gTable.myTable[x][y] = 1;
                        gTable.myTable[x - 1][y + 1] = 1;
                        x -= 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 2:
                if (x >= 1) {
                    store[0] = gTable.myTable[x - 1][y];
                    store[1] = gTable.myTable[x - 1][y + 1];
                    store[2] = gTable.myTable[x - 1][y + 2];
                    if (isGo(3)) {
                        gTable.myTable[x][y] = 0;
                        gTable.myTable[x + 1][y + 1] = 0;
                        gTable.myTable[x][y + 2] = 0;
                        gTable.myTable[x - 1][y] = 1;
                        gTable.myTable[x - 1][y + 1] = 1;
                        gTable.myTable[x - 1][y + 2] = 1;
                        x -= 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 3:
                if (x >= 1) {
                    store[0] = gTable.myTable[x - 1][y];
                    store[1] = gTable.myTable[x][y + 1];
                    if (isGo(2)) {
                        gTable.myTable[x + 2][y] = 0;
                        gTable.myTable[x + 1][y + 1] = 0;
                        gTable.myTable[x - 1][y] = 1;
                        gTable.myTable[x][y + 1] = 1;
                        x -= 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 4:
                if (x >= 1) {
                    store[0] = gTable.myTable[x][y];
                    store[1] = gTable.myTable[x - 1][y + 1];
                    store[2] = gTable.myTable[x][y + 2];
                    if (isGo(3)) {
                        gTable.myTable[x + 1][y] = 0;
                        gTable.myTable[x + 1][y + 1] = 0;
                        gTable.myTable[x + 1][y + 2] = 0;
                        gTable.myTable[x][y] = 1;
                        gTable.myTable[x - 1][y + 1] = 1;
                        gTable.myTable[x][y + 2] = 1;
                        x -= 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            default:
                return false;
        }
    }

    public boolean right() {
        switch (direct) {
            case 1:
                if (x <= gTable.x - 4) {
                    store[0] = gTable.myTable[x + 2][y];
                    store[1] = gTable.myTable[x + 3][y + 1];
                    if (isGo(2)) {
                        gTable.myTable[x + 1][y] = 0;
                        gTable.myTable[x][y + 1] = 0;
                        gTable.myTable[x + 2][y] = 1;
                        gTable.myTable[x + 3][y + 1] = 1;
                        x += 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 2:
                if (x <= gTable.x - 3) {
                    store[0] = gTable.myTable[x + 1][y];
                    store[1] = gTable.myTable[x + 2][y + 1];
                    store[2] = gTable.myTable[x + 1][y + 2];
                    if (isGo(3)) {
                        gTable.myTable[x][y] = 0;
                        gTable.myTable[x][y + 1] = 0;
                        gTable.myTable[x][y + 2] = 0;
                        gTable.myTable[x + 1][y] = 1;
                        gTable.myTable[x + 2][y + 1] = 1;
                        gTable.myTable[x + 1][y + 2] = 1;
                        x += 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 3:
                if (x <= gTable.x - 4) {
                    store[0] = gTable.myTable[x + 3][y];
                    store[1] = gTable.myTable[x + 2][y + 1];
                    if (isGo(2)) {
                        gTable.myTable[x][y] = 0;
                        gTable.myTable[x + 1][y + 1] = 0;
                        gTable.myTable[x + 3][y] = 1;
                        gTable.myTable[x + 2][y + 1] = 1;
                        x += 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 4:
                if (x <= gTable.x - 3) {
                    store[0] = gTable.myTable[x + 2][y];
                    store[1] = gTable.myTable[x + 2][y + 1];
                    store[2] = gTable.myTable[x + 2][y + 2];
                    if (isGo(3)) {
                        gTable.myTable[x][y + 1] = 0;
                        gTable.myTable[x + 1][y] = 0;
                        gTable.myTable[x + 1][y + 2] = 0;
                        gTable.myTable[x + 2][y] = 1;
                        gTable.myTable[x + 2][y + 1] = 1;
                        gTable.myTable[x + 2][y + 2] = 1;
                        x += 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            default:
                return false;
        }
    }

    public boolean change() {
        switch (direct) {
            case 1:
                if (true) {
                    store[0] = gTable.myTable[x][y];
                    store[1] = gTable.myTable[x][y - 1];
                    store[2] = gTable.myTable[x + 1][y - 1];
                    if (isGo(3)) {
                        gTable.myTable[x + 1][y + 1] = 0;
                        gTable.myTable[x + 2][y + 1] = 0;
                        gTable.myTable[x][y] = 1;
                        gTable.myTable[x][y - 1] = 1;
                        y -= 1;
                        direct = 2;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 2:
                if (x <= gTable.x - 3) {
                    store[0] = gTable.myTable[x + 1][y];
                    store[1] = gTable.myTable[x + 2][y];
                    store[2] = gTable.myTable[x + 2][y + 1];
                    store[3] = gTable.myTable[x + 1][y + 2];
                    if (isGo(4)) {
                        gTable.myTable[x][y] = 0;
                        gTable.myTable[x][y + 2] = 0;
                        gTable.myTable[x + 2][y + 1] = 1;
                        gTable.myTable[x + 1][y + 2] = 1;
                        y += 1;
                        direct = 3;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 3:
                if (true) {
                    store[0] = gTable.myTable[x][y - 1];
                    store[1] = gTable.myTable[x + 1][y - 1];
                    store[2] = gTable.myTable[x + 2][y - 1];
                    store[3] = gTable.myTable[x + 2][y + 1];
                    if (isGo(4)) {
                        gTable.myTable[x][y] = 0;
                        gTable.myTable[x + 1][y + 1] = 0;
                        gTable.myTable[x + 2][y - 1] = 1;
                        gTable.myTable[x + 2][y + 1] = 1;
                        x += 1;
                        y -= 1;
                        direct = 4;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            case 4:
                if (x <= gTable.x - 3) {
                    store[0] = gTable.myTable[x + 2][y];
                    store[1] = gTable.myTable[x + 2][y + 1];
                    store[2] = gTable.myTable[x + 2][y + 2];
                    store[3] = gTable.myTable[x][y + 2];
                    if (isGo(4)) {
                        gTable.myTable[x + 1][y] = 0;
                        gTable.myTable[x][y + 1] = 0;
                        gTable.myTable[x][y + 2] = 1;
                        gTable.myTable[x + 2][y + 2] = 1;
                        y += 1;
                        direct = 1;
                        return true;
                    }
                    else {
                        return false;
                    }
                }
                else {
                    return false;
                }
            default:
                return false;
        }
    }

    public void downTo() {
        boolean canDown = true;
        while (canDown) {
            canDown = down();
        }
    }

    public boolean isGo(int n) {
        for (int i = 0; i <= (n - 1); i++) {
            if (store[i] != 0)
                return false;
        }
        return true;
    }

    public static void main(String args[]) {
        new Seven();
    }
}