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b4ux1t3 :trek_ds9_sisko:#1️⃣

Taking a side quest to figure out if you can parse stat blocks with a simple parser.

I think the language is consistent enough to be modeled with a context-free grammar, though it may even be possible to build a regex for it (or some other regular language parser).

Taking attacks as an example, they come in a couple flavors:

1. a number, "weapon", a modifier and a die roll (this sometimes has an effect)
2. a number, "spell" and a modifier
3. a number and an ability

1/n

Dec 27, 2024, 08:39 PM·Public·Phanpy
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b4ux1t3 :trek_ds9_sisko:#1️⃣

Since a monster/creature/whatever can have multiple attacks, you separate them with "or". So, an attack would be defined as follows. (alt text has the text from the image)

2/n

TEXT: attackBlock -> "ATK" attackDef ( "or" attackDef )*; attackDef -> weaponAtk | spellAtk | abilityAtk; weaponAtk -> NUMBER WEAPON modifier "(" dieRoll ( "/" dieRoll )* ("+" EFFECT)? ")"; spellAtk -> NUMBER SPELL modifier; abilityAtk -> NUMBER ABILITY; modifier -> ( "+"|"-" ) NUMBER; dieRoll -> NUMBER ( "d4" | "d6" | "d8" | "d10" | "d12" | "d20" ) NUMBER -> [0-9][0-9]*; // These could actually be a discrete set of strings if we were just using the official source material, but they'd b big sets. WEAPON -> STRING; SPELL -> STRING; ABILITY -> STRING; STRING -> [a-z][a-z]*;
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b4ux1t3 :trek_ds9_sisko:#1️⃣

Sure, there's a bit of complexity here, but it's also just one of the more complex parts of the stat block (maybe THE most complex?)

AC is a number and a description, HP is a number, MV is one of near, double near, and far, with modifiers (fly, e.g.), and then each stat is just a modifier, alignment is one of [C,N,L], and lvl is a number

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