My group recently starting playing with the HERO system (6E), and I've been teaching them how to play. One of my players recognized the attack roll pattern as too similar to the dreaded THAC0. When I broke out a chart, eyes rolled.
I know there are several methods to presenting the formula, but I'm looking for an easy way to present the values by simplifying the process and removing some element of the formula without relying on a chart.
The number 11 is the only universal constant in this formula. Since I have a lot of players with D&D background, I thought I'd use the 11 to create a pre-calculated Combat Defense number (similar to Pathfinder's CMD or AC), which would be 11-DCV = CD, and making that CD a regular part character sheet. Since the target number would be CD or less, the attacker's to hit would be simply 3d6 - OCV.
Positive modifiers increase the CD, and negative modifiers decrease the CD.
Am I calculating this correctly?