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Give item categories and subtypes real types (refactor step 2)

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ObjectKind separates what an item is from how it draws: Object.Type
(a byte that doubled as the map character) becomes Kind ObjectKind,
with Glyph() producing the display character and objectKindForGlyph
converting back at the map boundary. KindWand covers the C 'stick'
category. The magic-missile bolt uses KindGold, matching C's literal
o_type='*' trick, with a comment.

PotionKind, ScrollKind, RingKind, WandKind, WeaponKind, ArmorKind and
TrapKind are now iota enums with Stringer (names come from the base
info tables); Object gains typed accessors (obj.RingKind(), ...) and
Launch is typed WeaponKind. beTrapped returns TrapKind. The
getItem/inventory/whatis prompt filters take ObjectKind, with
KindCallable/KindRingOrStick replacing the C CALLABLE/R_OR_S
sentinels; wizard.c's type_name table is subsumed by
ObjectKind.String(). IsRing/IsWearing/initWeapon/doPot signatures are
typed accordingly.

The save format version becomes 5.4.4-go2: the gob field rename would
otherwise silently zero Kind when reading old saves.

No behavior change; full suite green.
This commit is contained in:
Jeffrey Paul
2026-07-06 22:00:43 +02:00
parent 626f8c5a7d
commit b940cfc41f
27 changed files with 426 additions and 259 deletions
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8
game/move.go
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@@ -192,7 +192,7 @@ func (g *RogueGame) doorOpen(rp *Room) {
}
// beTrapped makes him pay for stepping on a trap (move.c be_trapped).
func (g *RogueGame) beTrapped(tc Coord) int {
func (g *RogueGame) beTrapped(tc Coord) TrapKind {
p := &g.Player
if p.On(Levitating) {
return TrapRust // anything that's not a door or teleport
@@ -201,7 +201,7 @@ func (g *RogueGame) beTrapped(tc Coord) int {
g.Count = 0
pp := g.Level.At(tc.Y, tc.X)
pp.Ch = Trap
tr := int(pp.Flags & FTrapMask)
tr := TrapKind(pp.Flags & FTrapMask)
pp.Flags.Set(FSeen)
switch tr {
case TrapDoor:
@@ -311,7 +311,7 @@ func (g *RogueGame) rndmove(who *Creature) Coord {
break
}
}
if found != nil && found.Which == ScrollScareMonster {
if found != nil && found.ScrollKind() == ScrollScareMonster {
return who.Pos
}
}
@@ -321,7 +321,7 @@ func (g *RogueGame) rndmove(who *Creature) Coord {
// rustArmor rusts the given armor, if it is a legal kind to rust, and we
// aren't wearing a magic ring (move.c rust_armor).
func (g *RogueGame) rustArmor(arm *Object) {
if arm == nil || arm.Type != Armor || arm.Which == ArmorLeather ||
if arm == nil || arm.Kind != KindArmor || arm.ArmorKind() == ArmorLeather ||
arm.Arm >= 9 {
return
}