public void move(int direction) {
saveUndoState();
aGrid.cancelAnimations();
// 0: up, 1: right, 2: down, 3: left
if (lose || won) {
return;
}
Cell vector = getVector(direction);
List<Integer> traversalsX = buildTraversalsX(vector);
List<Integer> traversalsY = buildTraversalsY(vector);
boolean moved = false;
prepareTiles();
for (int xx : traversalsX) {
for (int yy : traversalsY) {
Cell cell = new Cell(xx, yy);
Tile tile = grid.getCellContent(cell);
if (tile != null) {
Cell[] positions = findFarthestPosition(cell, vector);
Tile next = grid.getCellContent(positions[1]);
if (next != null && next.getValue() == tile.getValue() && next.getMergedFrom() == null) {
Tile merged = new Tile(positions[1], tile.getValue() * 2);
Tile[] temp = {tile, next};
merged.setMergedFrom(temp);
grid.insertTile(merged);
grid.removeTile(tile);
// Converge the two tiles' positions
tile.updatePosition(positions[1]);
int[] extras = {xx, yy};
aGrid.startAnimation(
merged.getX(),
merged.getY(),
MOVE_ANIMATION,
MOVE_ANIMATION_TIME,
0,
extras); // Direction: 0 = MOVING MERGED
aGrid.startAnimation(
merged.getX(),
merged.getY(),
MERGE_ANIMATION,
SPAWN_ANIMATION_TIME,
MOVE_ANIMATION_TIME,
null);
// Update the score
score = score + merged.getValue();
highScore = Math.max(score, highScore);
// The mighty 2048 tile
if (merged.getValue() == 2048) {
won = true;
endGame();
}
} else {
moveTile(tile, positions[0]);
int[] extras = {xx, yy, 0};
aGrid.startAnimation(
positions[0].getX(),
positions[0].getY(),
MOVE_ANIMATION,
MOVE_ANIMATION_TIME,
0,
extras); // Direction: 1 = MOVING NO MERGE
}
if (!positionsEqual(cell, tile)) {
moved = true;
}
}
}
}
if (moved) {
addRandomTile();
checkLose();
}
mView.resyncTime();
mView.postInvalidate();
}
public void moveTile(Tile tile, Cell cell) {
grid.field[tile.getX()][tile.getY()] = null;
grid.field[cell.getX()][cell.getY()] = tile;
tile.updatePosition(cell);
}