We have implemented water physics into the mod. There where however some shortcomings. No water footstep or underwater detection or appropriate sounds. Also when under water there were no visual effects to simulate that the player was swimming beneath the surface. Once again much SDK work later there are appropriate detection of walking in water and being submerged and appropriate sound effects. Plus add a full screen post process blur shader to visually distort & blur the world render when the player is underwater. The player can also only hold his breath for so long. The blue progress bar shows how long the plater can remain underwater.