runeTier static method
Gets the tier of a rune. Keystone: 0, rows of minor runes 1-3. Returns -1 on error.
Implementation
static int runeTier(int rune) {
if (Rune._Keystones.contains(rune)) return 0;
if (Rune._MinorTier1.contains(rune)) return 1;
if (Rune._MinorTier2.contains(rune)) return 2;
if (Rune._MinorTier3.contains(rune))
return 3;
else
return -1;
}