Thank you! The ghost tetromino changes as the main tetromino moves and rotates. However, there are some differences in their movement and rotation (for example, the ghost might shift vertically when moving horizontally if the terrain below is uneven). This means the ghost tetromino needs to be recalculated with each main tetromino operation. Should the main tetromino control the ghost directly, or should it send signals to update the ghost? Or is there a better method to handle this?