# Thread: Bug in Call of Cthulhu ruleset

1. ## Bug in Call of Cthulhu ruleset

Hi guys,

I guess there is a bug in the Coc rules: if you roll the d100 dice, the die with the 1's (not the die with the 10's) is added wrong to the die with the 10's if a 10 is rolled. Hm, sounds confusing, so here's an example:

d100 roll= 5 + 40 = 45 => correct
d100 roll= 10 + 40 = 50 => incorrect, should be 40.

Anybody noticed that?

2. This is a 'feature' of FG, not of the CoC ruleset. the 1-10 dice rolls 1,2,3...10, not 1,2,3...0. That means you can generate numbers 1,2,3...99,100 by adding the two die totals together, so 10+40 really is 50.

Foen

3. seems odd to me, as you usually count the 10 as a 0 when rolling a d100.

Any chance to change that? Maybe in the prefs - and maybe in your BRP ruleset as well? :-D

4. It's the way the FG engine works, and you get used to it. When counting 10 as 0 in 'normal' PnP games, you also tend to count 00 as 100.

If the engine were changed so that 10 was counted as 0, then rolling 00 with a +10 modifier would add up to 10 (not 110) and with a -5 modifier it would add up to -5 (not 95). To fix that problem, you'd have to introduce a second modifier in FG to capture 00 and change it to 100, but only when there were modifiers, otherwise you'd have to report it as 00.

BTW, if a die total is 00, it can only be displayed as 0, because the result is reported as a number, not a text, and there is no mechanism in FG for creating bespoke number formats.

All in all, having 10 as 10 and 100 as 100 is much easier for the FG engine.

Foen

5. I can see your point - and yes, I can live with that.

But an other thing:

When adding a monster to the Combat Tracker, it will roll its statistics (DEX) and put it in the list - but it will not resort the list by DEX rank. I need to insert an other Monster (or create a NEW blank one) into the Combat Tracker.

Any idea?

6. That looks like an oversight: no obvious fix, short of editing the ruleset

7. BTW, I checked the draft BRP ruleset and that doesn't seem to suffer from the same problem, but thanks for prompting me to look!

8. Thanks Foen for looking at it. So far I can live with the workaround, and I really want these BRP ruleset now Hope Chaosium will be fast at looking and approving it.

9. NP. You can use the BRP ruleset with your CoC campaigns and modules if you create a campaign extension. It doesn't give you the CoC skin, but you do get to use new BRP features.

10. I am attempting to open up the section in CoC with item prices to the players but it does not appear in their library even when I set the module to be loaded to players. Am I missing something here to make it visible?

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