Vehicle water physics fails at high velocity
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Description

At high velocities the water physics simulation fails to correctly handle vehicle impacts for some angles with the SDV and minigun speedboat.

Velocity is added in the direction of input to the vehicle proportional to the original velocity. For very high initial velocities (500+ m/s) the amount added can exceed 7 times the original velocity.

Details

Legacy ID: 329628301
Severity: None
Resolution: Open
Reproducibility: Always
Category: Game Physics

Steps To Reproduce

Place an SDV 100 m in the air over the water. Make sure it will land in water when launched from this point.
Use as init line for the vehicle: this setVelocity [0, 500, 0]
Hold input full left or full right with no forward or back.
Continue to hold input until vehicle has hit the water.

Additional Information

At high enough speeds, such as 500 m/s, the simulation can break down in novel ways.

Sometimes, the SDV will stick in the water so long as the input is held and generate wake effects in all directions around the vehicle. The vehicle will only launch once the input is released. It has also stuck in the air before.

There is a video of the "air grab" here: http://www.youtube.com/watch?v=IArEpx8oieo