CTB 6-7

MainActivity.java

        // Black
        float blackCenterX = blackX + black.getWidth() / 2;
        float blackCenterY = blackY + black.getHeight() / 2;

        if (0 <= blackCenterX && blackCenterX <= boxSize &&
                boxY <= blackCenterY && blackCenterY <= boxY + boxSize) {

            // Game Over!
            if (timer != null) {
                timer.cancel();
                timer = null;
            }

            // 結果画面へ
        }