I trying to make some rules for a Fading Suns game and I'm a bit stumped on the energy shields. I'm thinking of using a modified version of the rule from Fading Suns D20 since it's easier to translate mechanics. In the d20 game, the damage dealt to the shield is used as a modifier to roll against an activation check. The DC for ranged weapons is 15 and 17 for melee weapons. So a guy fires a gun and deals 5 damage. He rolls a d20 and adds the damage, if he rolls 15 and above, the shield activates