Keep in mind that not all setting will want to make use of force feild systems... so as an optional system:
1) Counts as armor, kinda like a deflection bonus. Sheilds make the ship harder to hit. Critical hits have nothing to do with sheilds.
Pros: simple, works like a sheild does in normal DnD melee combat.
Cons: no way for sheilds be at "50%," so you lose some possible flavor there that some people will want.
2) Counts as some kind of Temp Hit points. Damage is done to the sheilds first. Critical hits ignore sheilds. Sheilds absorb damage but don't make the ship any harder to hit.
Pros: sheilds can actualy be high or low, and disabled.
Cons: Sheilds in this case don't work like a sheild does in melee, and that is a bit counter intutive to some people.
3) Works like damage reduction. Big impressive sheilds keep all but the worst attacks out. Critical hits ignore this damage reduction. Adding more power to sheilds (a system we haven't even come up with yet) would increase the reduction amount.
Pros: Easy "more power needed" system.
Cons: not only counter intutive, but still now sheilds "at 50%" system.
1) Counts as armor, kinda like a deflection bonus. Sheilds make the ship harder to hit. Critical hits have nothing to do with sheilds.
Pros: simple, works like a sheild does in normal DnD melee combat.
Cons: no way for sheilds be at "50%," so you lose some possible flavor there that some people will want.
2) Counts as some kind of Temp Hit points. Damage is done to the sheilds first. Critical hits ignore sheilds. Sheilds absorb damage but don't make the ship any harder to hit.
Pros: sheilds can actualy be high or low, and disabled.
Cons: Sheilds in this case don't work like a sheild does in melee, and that is a bit counter intutive to some people.
3) Works like damage reduction. Big impressive sheilds keep all but the worst attacks out. Critical hits ignore this damage reduction. Adding more power to sheilds (a system we haven't even come up with yet) would increase the reduction amount.
Pros: Easy "more power needed" system.
Cons: not only counter intutive, but still now sheilds "at 50%" system.