Converting _some_ CODA to D20
Hello all! I hope this isn't sacrilege, but I've been toying with converting the wonderful narrative starship combat from CODA into d20. Although I like CODA a lot, I own a tremendous amount of d20 material and much of that material can, with little work, dovetail with ADB's Prime Directive d20 Modern. Plus, CODA and d20 are so similar to me (*ducking*), that I'd just be running CODA as a d20 game inadvertently in a short period of time.
With that said, does anyone have any advice on how to start? I know that the math would have me multiply a CODA "stat" by 1.6 (1 on 2d6 being 1.6 on a 1d20), but a cursory look at the narrative starship combat rules seems to indicate that I just need to compare CODA TNs to d20 DCs. I'm less confident about that.
If I use the math, the d20 DCs may be a bit high: a TN 10 (Routine) becomes a DC 16 (Tough). However, if I just convert TNs directly to DCs (a TN 10 is a DC 10), it doesn't seem to go far enough since TNs seem to peak at 25* (Virtually Impossible) and DCs peak at 40 (Nearly Impossible).
*Although there may be a maneuver in Starships that is TN 30; I can't recall.
In practice, however, in d20 a DC 25 is a tough thing for a character who has not focused on the skill involved in the challenge. So perhaps a "one for one" is the way to go.
To add to the problem, the Deflector Shield Protection of a starship is in effect the TN to hit the ship! I really don't want to mess with the published stats, although one stab at this problem had me adding "2" (1.6 rounded up) to the published DSP (although I can't recall the logic right now).
Anyway, any help would be greatly appreciated! Narrative starship combat is the way to go for an RPG and I love what Decipher did.
Best,
Lee (FASAfan)