Start on adding drowning bonus to bat/firepunch/whip. AI still is not smart enough to change direction when firepunching to face the water, or change the angle of the bat. Also try to weight cost of switches based on how many switches were available.

Add drowning to grenade too, try some little optimisations

Fix silliness

First pass at making AI drowning aware. No concerns of performance, only applied to bazooka (not bat/fp etc)