ayvango
2014-09-26, 09:49 PM
I've read this topic here (http://www.giantitp.com/forums/showthread.php?333690-Calculating-CR), DMG p.48, and I aware of online calculator (http://www.d20srd.org/extras/d20encountercalculator/). But this information is insufficient for me, because I'd like to write my own calculator (offline). So I need the exact formula for calculating encounter challenge rating basing of individual monster's challenge ratings.
I'm searching for explicit form like ECR = E(CR_1, CR_2, ... CR_n), where domain and range of the function are both real numbers, and I will use approximation in the final step to give output as an integer number. I prefer to operate on real numbers, because it made easier for satisfy following obvious recruitments:
commutativity: E(a, b) = E(b, a)
associativity: E( E(a, b), c) = E(a, E(b, c))
Neither source give me the formula. The DMG just gives bunch of advices for various special cases, the forum thread translates them, and the calculator works as oracle and hide the formula inside web page. The latter use pretty strange formula though: it gives encounter level 7 for 10 CL1 monsters. Too high for me.
I'm anticipating that there is no complete formula in the official sources, but the DMG encourage house rules for experience, so It may be possible to devise one. So I'm searching for either official sources or house rules suggestions.
I'm searching for explicit form like ECR = E(CR_1, CR_2, ... CR_n), where domain and range of the function are both real numbers, and I will use approximation in the final step to give output as an integer number. I prefer to operate on real numbers, because it made easier for satisfy following obvious recruitments:
commutativity: E(a, b) = E(b, a)
associativity: E( E(a, b), c) = E(a, E(b, c))
Neither source give me the formula. The DMG just gives bunch of advices for various special cases, the forum thread translates them, and the calculator works as oracle and hide the formula inside web page. The latter use pretty strange formula though: it gives encounter level 7 for 10 CL1 monsters. Too high for me.
I'm anticipating that there is no complete formula in the official sources, but the DMG encourage house rules for experience, so It may be possible to devise one. So I'm searching for either official sources or house rules suggestions.