Shark event#30

New type of event:

gameplay on some maps (IA and PS) with water (exemple: Beach). Sharks are spawning in water and can move like real entities, they follow nearest entities to eat them. (they will not target players inside a boat of course)

If you have suggestion of maps, then go write here.

Currently list:

• Beach (PS)
• Aquarium (PS)
• WaterWorld (IA)