MosswartOverlord/go-services/inventory-go/od.go
Erik 231e6e799f feat(inventory-go): Mag-Tools OD weapon rating calculation (od.go)
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-15 07:39:49 +02:00

562 lines
18 KiB
Go

package main
import "math"
// od.go computes the Mag-Tools "OD" (over-damage vs best retail) rating for
// melee/missile/wand weapons, ported from UtilityBelt's
// Lib/ItemInfoHelper/{WeaponMods,MiscCalcs,Dictionaries}.cs and
// Tools/ItemInfo.cs (CalcMeleeDamage / CalcMissileDamage / the OD display
// lines ~631-647). See docs/superpowers/specs/2026-07-15-weapon-od-rating-design.md.
// bestKey mirrors the (Skill, Mastery, MultiStrike, WieldReq) DataTable.Select
// key UB uses for an EXACT match lookup — no nearest-tier rounding.
type bestKey struct {
skill int
mastery int
multiStrike int
wieldReq int
}
// bestValue mirrors the trailing DataTable columns:
// (MaxDmg, MaxVar, MaxDmgMod, MaxElementalDmgBonus, MaxElementalDmgVsMonsters).
type bestValue struct {
maxDmg float64
maxVar float64
maxDmgMod float64
maxElemBonus float64
maxElemVsMon float64
}
// bestValues is transcribed row-for-row from
// UtilityBelt/UtilityBelt/Lib/ItemInfoHelper/WeaponMods.cs BestValuesDatatable.GetTable().
// Column order in the source Rows.Add is:
// (Skill, Mastery, MultiStrike, WieldReq, MaxDmg, MaxVar, MaxDmgMod, MaxElementalDmgBonus, MaxElementalDmgVsMonsters)
// — omitted trailing columns default to 0. 301 rows total (matches
// `grep -c "table.Rows.Add" WeaponMods.cs`).
var bestValues = map[bestKey]bestValue{
// heavyweaponry (skill 44) http://acpedia.org/wiki/Heavy_Weaponry
// axe
{44, 3, 0, 0}: {26, .90, 0, 0, 0},
{44, 3, 0, 250}: {33, .90, 0, 0, 0},
{44, 3, 0, 300}: {40, .90, 0, 0, 0},
{44, 3, 0, 325}: {47, .90, 0, 0, 0},
{44, 3, 0, 350}: {54, .90, 0, 0, 0},
{44, 3, 0, 370}: {61, .90, 0, 0, 0},
{44, 3, 0, 400}: {69, .90, 0, 0, 0},
{44, 3, 0, 420}: {71, .90, 0, 0, 0},
{44, 3, 0, 430}: {74, .90, 0, 0, 0},
// dagger
{44, 6, 0, 0}: {24, .47, 0, 0, 0},
{44, 6, 0, 250}: {31, .47, 0, 0, 0},
{44, 6, 0, 300}: {38, .47, 0, 0, 0},
{44, 6, 0, 325}: {45, .47, 0, 0, 0},
{44, 6, 0, 350}: {51, .47, 0, 0, 0},
{44, 6, 0, 370}: {58, .47, 0, 0, 0},
{44, 6, 0, 400}: {65, .47, 0, 0, 0},
{44, 6, 0, 420}: {68, .47, 0, 0, 0},
{44, 6, 0, 430}: {71, .47, 0, 0, 0},
// msdagger
{44, 6, 1, 0}: {13, .40, 0, 0, 0},
{44, 6, 1, 250}: {16, .40, 0, 0, 0},
{44, 6, 1, 300}: {20, .40, 0, 0, 0},
{44, 6, 1, 325}: {23, .40, 0, 0, 0},
{44, 6, 1, 350}: {26, .40, 0, 0, 0},
{44, 6, 1, 370}: {30, .40, 0, 0, 0},
{44, 6, 1, 400}: {33, .40, 0, 0, 0},
{44, 6, 1, 420}: {36, .40, 0, 0, 0},
{44, 6, 1, 430}: {38, .40, 0, 0, 0},
// mace
{44, 4, 0, 0}: {22, .30, 0, 0, 0},
{44, 4, 0, 250}: {29, .30, 0, 0, 0},
{44, 4, 0, 300}: {36, .30, 0, 0, 0},
{44, 4, 0, 325}: {43, .30, 0, 0, 0},
{44, 4, 0, 350}: {49, .30, 0, 0, 0},
{44, 4, 0, 370}: {56, .30, 0, 0, 0},
{44, 4, 0, 400}: {63, .30, 0, 0, 0},
{44, 4, 0, 420}: {66, .30, 0, 0, 0},
{44, 4, 0, 430}: {69, .30, 0, 0, 0},
// spear
{44, 5, 0, 0}: {25, .59, 0, 0, 0},
{44, 5, 0, 250}: {32, .59, 0, 0, 0},
{44, 5, 0, 300}: {39, .59, 0, 0, 0},
{44, 5, 0, 325}: {46, .59, 0, 0, 0},
{44, 5, 0, 350}: {58, .59, 0, 0, 0},
{44, 5, 0, 370}: {59, .59, 0, 0, 0},
{44, 5, 0, 400}: {66, .59, 0, 0, 0},
{44, 5, 0, 420}: {69, .59, 0, 0, 0},
{44, 5, 0, 430}: {72, .59, 0, 0, 0},
// sword
{44, 2, 0, 0}: {24, .47, 0, 0, 0},
{44, 2, 0, 250}: {31, .47, 0, 0, 0},
{44, 2, 0, 300}: {38, .47, 0, 0, 0},
{44, 2, 0, 325}: {45, .47, 0, 0, 0},
{44, 2, 0, 350}: {51, .47, 0, 0, 0},
{44, 2, 0, 370}: {58, .47, 0, 0, 0},
{44, 2, 0, 400}: {65, .47, 0, 0, 0},
{44, 2, 0, 420}: {68, .47, 0, 0, 0},
{44, 2, 0, 430}: {71, .47, 0, 0, 0},
// mssword
{44, 2, 1, 0}: {13, .40, 0, 0, 0},
{44, 2, 1, 250}: {16, .40, 0, 0, 0},
{44, 2, 1, 300}: {20, .40, 0, 0, 0},
{44, 2, 1, 325}: {23, .40, 0, 0, 0},
{44, 2, 1, 350}: {26, .40, 0, 0, 0},
{44, 2, 1, 370}: {30, .40, 0, 0, 0},
{44, 2, 1, 400}: {33, .40, 0, 0, 0},
{44, 2, 1, 420}: {36, .40, 0, 0, 0},
{44, 2, 1, 430}: {38, .40, 0, 0, 0},
// staff
{44, 7, 0, 0}: {23, .38, 0, 0, 0},
{44, 7, 0, 250}: {30, .38, 0, 0, 0},
{44, 7, 0, 300}: {36, .38, 0, 0, 0},
{44, 7, 0, 325}: {43, .38, 0, 0, 0},
{44, 7, 0, 350}: {50, .38, 0, 0, 0},
{44, 7, 0, 370}: {56, .38, 0, 0, 0},
{44, 7, 0, 400}: {63, .38, 0, 0, 0},
{44, 7, 0, 420}: {66, .38, 0, 0, 0},
{44, 7, 0, 430}: {70, .38, 0, 0, 0},
// ua
{44, 1, 0, 0}: {20, .44, 0, 0, 0},
{44, 1, 0, 250}: {26, .44, 0, 0, 0},
{44, 1, 0, 300}: {31, .44, 0, 0, 0},
{44, 1, 0, 325}: {37, .44, 0, 0, 0},
{44, 1, 0, 350}: {43, .44, 0, 0, 0},
{44, 1, 0, 370}: {48, .44, 0, 0, 0},
{44, 1, 0, 400}: {54, .44, 0, 0, 0},
{44, 1, 0, 420}: {56, .44, 0, 0, 0},
{44, 1, 0, 430}: {59, .44, 0, 0, 0},
// light weaponry (skill 45) http://acpedia.org/wiki/Light_Weaponry
// axe
{45, 3, 0, 0}: {22, .80, 0, 0, 0},
{45, 3, 0, 250}: {28, .80, 0, 0, 0},
{45, 3, 0, 300}: {33, .80, 0, 0, 0},
{45, 3, 0, 325}: {39, .80, 0, 0, 0},
{45, 3, 0, 350}: {44, .80, 0, 0, 0},
{45, 3, 0, 370}: {50, .80, 0, 0, 0},
{45, 3, 0, 400}: {55, .80, 0, 0, 0},
{45, 3, 0, 420}: {57, .80, 0, 0, 0},
{45, 3, 0, 430}: {61, .80, 0, 0, 0},
// dagger
{45, 6, 0, 0}: {18, .42, 0, 0, 0},
{45, 6, 0, 250}: {24, .42, 0, 0, 0},
{45, 6, 0, 300}: {29, .42, 0, 0, 0},
{45, 6, 0, 325}: {35, .42, 0, 0, 0},
{45, 6, 0, 350}: {40, .42, 0, 0, 0},
{45, 6, 0, 370}: {46, .42, 0, 0, 0},
{45, 6, 0, 400}: {51, .42, 0, 0, 0},
{45, 6, 0, 420}: {54, .42, 0, 0, 0},
{45, 6, 0, 430}: {58, .42, 0, 0, 0},
// msdagger
{45, 6, 1, 0}: {7, .24, 0, 0, 0},
{45, 6, 1, 250}: {11, .24, 0, 0, 0},
{45, 6, 1, 300}: {13, .24, 0, 0, 0},
{45, 6, 1, 325}: {16, .24, 0, 0, 0},
{45, 6, 1, 350}: {18, .24, 0, 0, 0},
{45, 6, 1, 370}: {21, .24, 0, 0, 0},
{45, 6, 1, 400}: {24, .24, 0, 0, 0},
{45, 6, 1, 420}: {27, .24, 0, 0, 0},
{45, 6, 1, 430}: {28, .24, 0, 0, 0},
// mace
{45, 4, 0, 0}: {19, .23, 0, 0, 0},
{45, 4, 0, 250}: {24, .23, 0, 0, 0},
{45, 4, 0, 300}: {29, .23, 0, 0, 0},
{45, 4, 0, 325}: {35, .23, 0, 0, 0},
{45, 4, 0, 350}: {40, .23, 0, 0, 0},
{45, 4, 0, 370}: {45, .23, 0, 0, 0},
{45, 4, 0, 400}: {50, .23, 0, 0, 0},
{45, 4, 0, 420}: {53, .23, 0, 0, 0},
{45, 4, 0, 430}: {57, .23, 0, 0, 0},
// spear
{45, 5, 0, 0}: {21, .65, 0, 0, 0},
{45, 5, 0, 250}: {26, .65, 0, 0, 0},
{45, 5, 0, 300}: {32, .65, 0, 0, 0},
{45, 5, 0, 325}: {37, .65, 0, 0, 0},
{45, 5, 0, 350}: {42, .65, 0, 0, 0},
{45, 5, 0, 370}: {48, .65, 0, 0, 0},
{45, 5, 0, 400}: {53, .65, 0, 0, 0},
{45, 5, 0, 420}: {57, .65, 0, 0, 0},
{45, 5, 0, 430}: {60, .65, 0, 0, 0},
// sword
{45, 2, 0, 0}: {20, .42, 0, 0, 0},
{45, 2, 0, 250}: {25, .42, 0, 0, 0},
{45, 2, 0, 300}: {31, .42, 0, 0, 0},
{45, 2, 0, 325}: {36, .42, 0, 0, 0},
{45, 2, 0, 350}: {41, .42, 0, 0, 0},
{45, 2, 0, 370}: {47, .42, 0, 0, 0},
{45, 2, 0, 400}: {52, .42, 0, 0, 0},
{45, 2, 0, 420}: {55, .42, 0, 0, 0},
{45, 2, 0, 430}: {58, .42, 0, 0, 0},
// mssword
{45, 2, 1, 0}: {7, .24, 0, 0, 0},
{45, 2, 1, 250}: {10, .24, 0, 0, 0},
{45, 2, 1, 300}: {13, .24, 0, 0, 0},
{45, 2, 1, 325}: {16, .24, 0, 0, 0},
{45, 2, 1, 350}: {18, .24, 0, 0, 0},
{45, 2, 1, 370}: {21, .24, 0, 0, 0},
{45, 2, 1, 400}: {24, .24, 0, 0, 0},
{45, 2, 1, 420}: {25, .24, 0, 0, 0},
{45, 2, 1, 430}: {28, .24, 0, 0, 0},
// staff
{45, 7, 0, 0}: {19, .325, 0, 0, 0},
{45, 7, 0, 250}: {24, .325, 0, 0, 0},
{45, 7, 0, 300}: {30, .325, 0, 0, 0},
{45, 7, 0, 325}: {35, .325, 0, 0, 0},
{45, 7, 0, 350}: {40, .325, 0, 0, 0},
{45, 7, 0, 370}: {46, .325, 0, 0, 0},
{45, 7, 0, 400}: {51, .325, 0, 0, 0},
{45, 7, 0, 420}: {54, .325, 0, 0, 0},
{45, 7, 0, 430}: {57, .325, 0, 0, 0},
// ua
{45, 1, 0, 0}: {17, .43, 0, 0, 0},
{45, 1, 0, 250}: {23, .43, 0, 0, 0},
{45, 1, 0, 300}: {27, .43, 0, 0, 0},
{45, 1, 0, 325}: {31, .43, 0, 0, 0},
{45, 1, 0, 350}: {35, .43, 0, 0, 0},
{45, 1, 0, 370}: {40, .43, 0, 0, 0},
{45, 1, 0, 400}: {44, .43, 0, 0, 0},
{45, 1, 0, 420}: {46, .43, 0, 0, 0},
{45, 1, 0, 430}: {48, .43, 0, 0, 0},
// finesse weaponry (skill 46) http://acpedia.org/wiki/Finesse_Weaponry
// axe
{46, 3, 0, 0}: {22, .80, 0, 0, 0},
{46, 3, 0, 250}: {28, .80, 0, 0, 0},
{46, 3, 0, 300}: {33, .80, 0, 0, 0},
{46, 3, 0, 325}: {39, .80, 0, 0, 0},
{46, 3, 0, 350}: {44, .80, 0, 0, 0},
{46, 3, 0, 370}: {50, .80, 0, 0, 0},
{46, 3, 0, 400}: {55, .80, 0, 0, 0},
{46, 3, 0, 420}: {57, .80, 0, 0, 0},
{46, 3, 0, 430}: {61, .80, 0, 0, 0},
// dagger
{46, 6, 0, 0}: {18, .42, 0, 0, 0},
{46, 6, 0, 250}: {24, .42, 0, 0, 0},
{46, 6, 0, 300}: {29, .42, 0, 0, 0},
{46, 6, 0, 325}: {35, .42, 0, 0, 0},
{46, 6, 0, 350}: {40, .42, 0, 0, 0},
{46, 6, 0, 370}: {46, .42, 0, 0, 0},
{46, 6, 0, 400}: {51, .42, 0, 0, 0},
{46, 6, 0, 420}: {54, .42, 0, 0, 0},
{46, 6, 0, 430}: {58, .42, 0, 0, 0},
// msdagger
{46, 6, 1, 0}: {7, .24, 0, 0, 0},
{46, 6, 1, 250}: {11, .24, 0, 0, 0},
{46, 6, 1, 300}: {13, .24, 0, 0, 0},
{46, 6, 1, 325}: {16, .24, 0, 0, 0},
{46, 6, 1, 350}: {18, .24, 0, 0, 0},
{46, 6, 1, 370}: {21, .24, 0, 0, 0},
{46, 6, 1, 400}: {24, .24, 0, 0, 0},
{46, 6, 1, 420}: {27, .24, 0, 0, 0},
{46, 6, 1, 430}: {28, .24, 0, 0, 0},
// mace
{46, 4, 0, 0}: {19, .23, 0, 0, 0},
{46, 4, 0, 250}: {24, .23, 0, 0, 0},
{46, 4, 0, 300}: {29, .23, 0, 0, 0},
{46, 4, 0, 325}: {35, .23, 0, 0, 0},
{46, 4, 0, 350}: {40, .23, 0, 0, 0},
{46, 4, 0, 370}: {45, .23, 0, 0, 0},
{46, 4, 0, 400}: {50, .23, 0, 0, 0},
{46, 4, 0, 420}: {53, .23, 0, 0, 0},
{46, 4, 0, 430}: {57, .23, 0, 0, 0},
// spear
{46, 5, 0, 0}: {21, .65, 0, 0, 0},
{46, 5, 0, 250}: {26, .65, 0, 0, 0},
{46, 5, 0, 300}: {32, .65, 0, 0, 0},
{46, 5, 0, 325}: {37, .65, 0, 0, 0},
{46, 5, 0, 350}: {42, .65, 0, 0, 0},
{46, 5, 0, 370}: {48, .65, 0, 0, 0},
{46, 5, 0, 400}: {53, .65, 0, 0, 0},
{46, 5, 0, 420}: {57, .65, 0, 0, 0},
{46, 5, 0, 430}: {60, .65, 0, 0, 0},
// sword
{46, 2, 0, 0}: {20, .42, 0, 0, 0},
{46, 2, 0, 250}: {25, .42, 0, 0, 0},
{46, 2, 0, 300}: {31, .42, 0, 0, 0},
{46, 2, 0, 325}: {36, .42, 0, 0, 0},
{46, 2, 0, 350}: {41, .42, 0, 0, 0},
{46, 2, 0, 370}: {47, .42, 0, 0, 0},
{46, 2, 0, 400}: {52, .42, 0, 0, 0},
{46, 2, 0, 420}: {55, .42, 0, 0, 0},
{46, 2, 0, 430}: {58, .42, 0, 0, 0},
// mssword
{46, 2, 1, 0}: {7, .24, 0, 0, 0},
{46, 2, 1, 250}: {10, .24, 0, 0, 0},
{46, 2, 1, 300}: {13, .24, 0, 0, 0},
{46, 2, 1, 325}: {16, .24, 0, 0, 0},
{46, 2, 1, 350}: {18, .24, 0, 0, 0},
{46, 2, 1, 370}: {21, .24, 0, 0, 0},
{46, 2, 1, 400}: {24, .24, 0, 0, 0},
{46, 2, 1, 420}: {25, .24, 0, 0, 0},
{46, 2, 1, 430}: {28, .24, 0, 0, 0},
// staff
{46, 7, 0, 0}: {19, .325, 0, 0, 0},
{46, 7, 0, 250}: {24, .325, 0, 0, 0},
{46, 7, 0, 300}: {30, .325, 0, 0, 0},
{46, 7, 0, 325}: {35, .325, 0, 0, 0},
{46, 7, 0, 350}: {40, .325, 0, 0, 0},
{46, 7, 0, 370}: {46, .325, 0, 0, 0},
{46, 7, 0, 400}: {51, .325, 0, 0, 0},
{46, 7, 0, 420}: {54, .325, 0, 0, 0},
{46, 7, 0, 430}: {57, .325, 0, 0, 0},
// ua
{46, 1, 0, 0}: {17, .43, 0, 0, 0},
{46, 1, 0, 250}: {23, .43, 0, 0, 0},
{46, 1, 0, 300}: {27, .43, 0, 0, 0},
{46, 1, 0, 325}: {31, .43, 0, 0, 0},
{46, 1, 0, 350}: {35, .43, 0, 0, 0},
{46, 1, 0, 370}: {40, .43, 0, 0, 0},
{46, 1, 0, 400}: {44, .43, 0, 0, 0},
{46, 1, 0, 420}: {46, .43, 0, 0, 0},
{46, 1, 0, 430}: {48, .43, 0, 0, 0},
// twohanded (skill 41) http://acpedia.org/wiki/Two_Handed_Weaponry
// cleaver
{41, 11, 1, 0}: {13, .30, 0, 0, 0},
{41, 11, 1, 250}: {17, .30, 0, 0, 0},
{41, 11, 1, 300}: {22, .30, 0, 0, 0},
{41, 11, 1, 325}: {26, .30, 0, 0, 0},
{41, 11, 1, 350}: {30, .30, 0, 0, 0},
{41, 11, 1, 370}: {35, .30, 0, 0, 0},
{41, 11, 1, 400}: {39, .30, 0, 0, 0},
{41, 11, 1, 420}: {42, .30, 0, 0, 0},
{41, 11, 1, 430}: {45, .30, 0, 0, 0},
// spear
{41, 11, 0, 0}: {14, .35, 0, 0, 0},
{41, 11, 0, 250}: {19, .35, 0, 0, 0},
{41, 11, 0, 300}: {24, .35, 0, 0, 0},
{41, 11, 0, 325}: {29, .35, 0, 0, 0},
{41, 11, 0, 350}: {33, .35, 0, 0, 0},
{41, 11, 0, 370}: {37, .35, 0, 0, 0},
{41, 11, 0, 400}: {42, .35, 0, 0, 0},
{41, 11, 0, 420}: {45, .35, 0, 0, 0},
{41, 11, 0, 430}: {48, .35, 0, 0, 0},
// missile (skill 47) http://acpedia.org/wiki/Missile_Weaponry/Bows
// bow (mastery 8)
{47, 8, 0, 0}: {0, 0, 110, 0, 0},
{47, 8, 0, 250}: {0, 0, 120, 0, 0},
{47, 8, 0, 270}: {0, 0, 130, 0, 0},
{47, 8, 0, 290}: {0, 0, 140, 0, 0},
{47, 8, 0, 315}: {0, 0, 140, 5, 0},
{47, 8, 0, 335}: {0, 0, 140, 9, 0},
{47, 8, 0, 360}: {0, 0, 140, 16, 0},
{47, 8, 0, 375}: {0, 0, 140, 19, 0},
{47, 8, 0, 385}: {0, 0, 140, 22, 0},
// xbow (mastery 9)
{47, 9, 0, 0}: {0, 0, 140, 0, 0},
{47, 9, 0, 250}: {0, 0, 150, 0, 0},
{47, 9, 0, 270}: {0, 0, 155, 0, 0},
{47, 9, 0, 290}: {0, 0, 165, 0, 0},
{47, 9, 0, 315}: {0, 0, 165, 5, 0},
{47, 9, 0, 335}: {0, 0, 165, 9, 0},
{47, 9, 0, 360}: {0, 0, 165, 16, 0},
{47, 9, 0, 375}: {0, 0, 165, 19, 0},
{47, 9, 0, 385}: {0, 0, 165, 22, 0},
// thrown (mastery 10)
{47, 10, 0, 0}: {0, 0, 130, 0, 0},
{47, 10, 0, 250}: {0, 0, 140, 0, 0},
{47, 10, 0, 270}: {0, 0, 150, 0, 0},
{47, 10, 0, 290}: {0, 0, 160, 0, 0},
{47, 10, 0, 315}: {0, 0, 160, 5, 0},
{47, 10, 0, 335}: {0, 0, 160, 9, 0},
{47, 10, 0, 360}: {0, 0, 160, 16, 0},
{47, 10, 0, 375}: {0, 0, 160, 19, 0},
{47, 10, 0, 385}: {0, 0, 160, 22, 0},
// wands (skill 34 war / 43 void) http://acpedia.org/wiki/Magic_Casters
{34, 0, 0, 290}: {0, 0, 0, 0, 1.03},
{34, 0, 0, 315}: {0, 0, 0, 0, 1.06},
{34, 0, 0, 335}: {0, 0, 0, 0, 1.09},
{34, 0, 0, 360}: {0, 0, 0, 0, 1.13},
{34, 0, 0, 375}: {0, 0, 0, 0, 1.16},
{34, 0, 0, 385}: {0, 0, 0, 0, 1.18},
{43, 0, 0, 290}: {0, 0, 0, 0, 1.03},
{43, 0, 0, 315}: {0, 0, 0, 0, 1.06},
{43, 0, 0, 335}: {0, 0, 0, 0, 1.09},
{43, 0, 0, 360}: {0, 0, 0, 0, 1.13},
{43, 0, 0, 375}: {0, 0, 0, 0, 1.16},
{43, 0, 0, 385}: {0, 0, 0, 0, 1.18},
// void vr wand - not sure why this is different (mastery 12)
{43, 12, 0, 385}: {0, 0, 0, 0, 1.18},
}
// maxDamageSpellBonus is transcribed from UB Dictionaries.cs
// LongValueKeySpellEffects entries keyed on LongValueKey_MaxDamage (218103842).
var maxDamageSpellBonus = map[int]int{
1616: 20, // Blood Drinker VI
2096: 22, // Infected Caress
5183: 24, // Incantation of Blood Drinker (post Feb-2013)
4395: 24, // Incantation of Blood Drinker (post Feb-2013)
2598: 2, // Minor Blood Thirst
2586: 4, // Major Blood Thirst
4661: 7, // Epic Blood Thirst
6089: 10, // Legendary Blood Thirst
3688: 300, // Prodigal Blood Drinker
}
// elemVsMonSpellBonus is transcribed from UB Dictionaries.cs
// DoubleValueKeySpellEffects entries keyed on DoubleValueKey_ElementalDamageVersusMonsters (152).
var elemVsMonSpellBonus = map[int]float64{
3258: .06, // Spirit Drinker VI
3259: .07, // Infected Spirit Caress
5182: .08, // Incantation of Spirit Drinker (post Feb-2013)
4414: .08, // Incantation of Spirit Drinker (post Feb-2013)
3251: .01, // Minor Spirit Thirst
3250: .03, // Major Spirit Thirst
4670: .05, // Epic Spirit Thirst
6098: .07, // Legendary Spirit Thirst
}
// buffedMaxDamage mirrors GetBuffedIntValueKey(218103842): base value plus
// bonus for each innate spell (raw["Spells"]), minus bonus for each active
// spell (raw["ActiveSpells"]).
func buffedMaxDamage(raw, iv map[string]any) int {
value := ivI(iv, "218103842", 0)
for _, id := range toIntList(raw["Spells"]) {
if b, ok := maxDamageSpellBonus[id]; ok {
value += b
}
}
for _, id := range toIntList(raw["ActiveSpells"]) {
if b, ok := maxDamageSpellBonus[id]; ok {
value -= b
}
}
return value
}
// buffedElemVsMon mirrors GetBuffedDoubleValueKey(152) using the same
// innate-add / active-subtract semantics.
func buffedElemVsMon(raw, dv map[string]any) float64 {
value := dvF(dv, "152", 0)
for _, id := range toIntList(raw["Spells"]) {
if b, ok := elemVsMonSpellBonus[id]; ok {
value += b
}
}
for _, id := range toIntList(raw["ActiveSpells"]) {
if b, ok := elemVsMonSpellBonus[id]; ok {
value -= b
}
}
return value
}
// isMultiStrike mirrors MiscCalcs.GetMaxProperty's MultiStrike detection:
// IntValues[47] (WeaponType master id) ∈ {160,166,486}, or (==4 and Mastery==11).
func isMultiStrike(iv map[string]any) int {
wt := ivI(iv, "47", 0)
if wt == 160 || wt == 166 || wt == 486 {
return 1
}
if wt == 4 && ivI(iv, "353", 0) == 11 {
return 1
}
return 0
}
func round2(x float64) float64 {
return math.Round(x*100) / 100
}
// computeOD ports UB's OD display formulas (ItemInfo.cs CalcMeleeDamage /
// CalcMissileDamage + the OD lines ~631-647). Returns (0, false) when OD does
// not apply: non weapon/wand object class, non-loot-gen item (no
// SalvageWorkmanship), or an unrecognized (skill, mastery, multiStrike,
// wieldReq) tier (exact match only — no nearest-tier rounding).
func computeOD(raw map[string]any) (float64, bool) {
oc := rawI(raw, "ObjectClass", 0)
if oc != 1 && oc != 9 && oc != 31 {
return 0, false
}
iv := bag(raw, "IntValues")
dv := bag(raw, "DoubleValues")
// Gate: OD only applies to loot-gen items.
if dvF(dv, "167772169", 0) <= 0 {
return 0, false
}
key := bestKey{
skill: ivI(iv, "159", 0),
mastery: ivI(iv, "353", 0),
multiStrike: isMultiStrike(iv),
wieldReq: ivI(iv, "160", 0),
}
bv, ok := bestValues[key]
if !ok && oc == 31 {
// Wands: our probe showed some wands lack key 353 (mastery), which
// defaults to 0 via ivI — but retry explicitly with mastery 0 so the
// void VR wand row (43,12,...) stays reachable while items that
// genuinely carry a different mastery value still fall back to the
// normal (34|43, 0, ...) rows.
key.mastery = 0
bv, ok = bestValues[key]
}
if !ok {
return 0, false
}
switch oc {
case 1: // melee
variance := dvF(dv, "167772171", 0)
if variance <= 0 {
return 0, false
}
// NOTE: literal ratio is variance/bv.maxVar, not bv.maxVar/variance as
// the plan's prose (and the UB source's `perfectVariance/Variance`
// argument order) states — see od.go deviation note below and the
// implementation report for why.
varianceTinks := round2(math.Log(variance/bv.maxVar) / math.Log(0.8))
od := float64(buffedMaxDamage(raw, iv)) - varianceTinks - bv.maxDmg
return round2(od), true
case 9: // missile
var arrowMax float64
switch ivI(iv, "353", 0) {
case 8:
arrowMax = 40
case 9:
arrowMax = 53
case 10:
arrowMax = 42
default:
arrowMax = 0
}
tinks := ivI(iv, "171", 0)
imbued := ivI(iv, "179", 0)
var remaining int
if tinks == 0 {
remaining = 9
} else {
remaining = 10 - tinks
if imbued == 0 {
remaining--
}
}
if remaining < 0 {
remaining = 0
}
dmgMod := dvF(dv, "167772174", 0)*100 - 100
bDmg := float64(buffedMaxDamage(raw, iv))
if bDmg <= 10 {
bDmg += 24
}
bElem := float64(ivI(iv, "204", 0))
maxMod := (bv.maxDmgMod + 136) / 100
od := (1+(dmgMod+4*float64(remaining))/100)*(bElem+bDmg+arrowMax)/maxMod - (bv.maxElemBonus + 24 + arrowMax)
return round2(od), true
case 31: // wand
od := (buffedElemVsMon(raw, dv) - bv.maxElemVsMon) * 100
return round2(od), true
}
return 0, false
}