private void dropDeadBlocks(int rowBorder) {
        if (rowBorder < 0) {
            throw new IllegalArgumentException("The provided row: " + rowBorder + " was negative");
        }
        
        if (rowBorder == 0) {
            for (int i = 0; i < mGrid[0].length; i++) {
                if (!mLiveTetriminoCoordinates.containsKey(mGrid[0][i])) {
                    mGrid[0][i] = -1;
                }
            }
        }
        
        int[] curr, above;
        for (int i = rowBorder; i > 0; i--) {
            curr = mGrid[i];
            above = mGrid[i - 1];
            
            for (int j = 0; j < curr.length; j++) {
                if (!mLiveTetriminoCoordinates.containsKey(curr[j])){
                    if (!mLiveTetriminoCoordinates.containsKey(above[j])) {
                        curr[j] = above[j];
                    } else {
                        curr[j] = -1;
                    }   
                }
            }
        }
        
        repaint();
    }