Kill some warnings (reported by clang).
Adjust flamer so that maximum power is at ⅙ of full range.
Adjust how projectile power loss is handled. (No changes to effect.)
In-flight damage from missiles; enabled for flamer.

Damage is applied to entities within the splash radius for each step of the
projectile's flight.

Flamer projectile in-flight damage is set to 1.
Collision and splash damage are reduced by one unit each to compensate.

The player firing the flamer won't get hurt except by splash from a
collision; he's considered shielded.