SpellSlot
U32 = 0 Spellbook slot whose spell rank is read. 0-3 are the basic ability slots - see SpellBookIndex for the full addressing scheme.
Int logic driver returning the current rank of the spell in slot
SpellSlot of the owner unit's spellbook (0 = not learned). Returns
-1 when the owner cannot be resolved. For a plain learned/not-learned
test, see
LearnedSpellDynamicMaterialBoolDriver.
U32 = 0 Spellbook slot whose spell rank is read. 0-3 are the basic ability slots - see SpellBookIndex for the full addressing scheme.