Water Buoyancy Added

To achieve this, first I let the little white balls float in the water. The higher the water rises, the balls follow the coordinates themselves.

Then I added this code to the raft. In addition to the height, you can see that it also leans forward and sideways. However, I later changed it to just go up and down. Because it caused extra-physical images on the move.

Finally, I added the code to all boats in the harbor. Many games make these unused accessory ships fixed to the majority. However, I have written this code so optimized that the test did not slow down even when twenty boats were swimming at the same time.

As a bonus, I looked at how it looked on a moving boat. As the results seem appropriate for now, what do you think about that?
As new features are added to the game, I will continue to share with you here.