public void setGame() {
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
gridA[j][i] = new Box(j, i);
active[i][j] = false;
}
}
spawnBox();
spawnBox();
}
public void spawnBox() {
int num1 = rand.nextInt(4);
int num2 = rand.nextInt(4);
if (gridA[num1][num2].getValue() == 0) {
gridA[num1][num2].randValue();
} else {
spawnBox();
}
}
public void moveDown() {
int position;
for (int j = 0; j < 4; j++) {
for (int i = 2; i >= 0; i--) {
position = i;
while (position < 3 && gridA[position + 1][j].getValue() == 0) { // movement
gridA[position + 1][j].setValue(gridA[position][j].getValue());
gridA[position][j].setValue(0);
position++;
}
}
if (gridA[3][j].getValue() == gridA[2][j].getValue()) { // combine
gridA[3][j].setValue(gridA[2][j].getValue() * 2);
gridA[2][j].setValue(0);
} else if (gridA[2][j].getValue() == gridA[1][j].getValue()) {
gridA[2][j].setValue(gridA[1][j].getValue() * 2);
gridA[1][j].setValue(0);
} else if (gridA[1][j].getValue() == gridA[0][j].getValue()) {
gridA[1][j].setValue(gridA[0][j].getValue() * 2);
gridA[0][j].setValue(0);
}
}
spawnBox();
}
public void moveUp() {
int position;
for (int j = 0; j < 4; j++) {
for (int i = 1; i < 4; i++) {
position = i;
while (position > 0 && gridA[position - 1][j].getValue() == 0) {
gridA[position - 1][j].setValue(gridA[position][j].getValue());
gridA[position][j].setValue(0);
position--;
}
}
if (gridA[0][j].getValue() == gridA[1][j].getValue()) {
gridA[0][j].setValue(gridA[1][j].getValue() * 2);
gridA[1][j].setValue(0);
} else if (gridA[1][j].getValue() == gridA[2][j].getValue()) {
gridA[1][j].setValue(gridA[1][j].getValue() * 2);
gridA[2][j].setValue(0);
} else if (gridA[2][j].getValue() == gridA[3][j].getValue()) {
gridA[2][j].setValue(gridA[3][j].getValue() * 2);
gridA[3][j].setValue(0);
}
}
spawnBox();
}