SamandClaude Fable 5
19461d1e0f
- the whole loop plays: the line arcs rod tip to bobber, the bite splashes with its own sound, and clicking the bobber reels in - the verdicts read like 1.12: yellow "your fish got away" lines, the reel-in sound, the fishing loot window - "You feel rested." prints on the transition, rest states come from the client's own Exhaustion table, and level 60 trades the XP strip for the max-level rail - the Skills pane lists what the real client lists: the hidden rows, the sort, gray numberless single-rank lines Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
371 lines
21 KiB
Rust
371 lines
21 KiB
Rust
//! The game-state `Unit*` bindings (decision 0068 §3) — the first slice of the addon-facing API that
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//! reads *live game state*, and the seam that keeps this crate engine-free while doing so.
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//!
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//! The engine must not touch the ECS/net (decisions 0006/0061: the codec is stateless, the ECS owns
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//! state). So instead of reaching outward, the app pushes a per-frame **unit snapshot** into the VM
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//! via [`UiScript::set_unit`], and the `Unit*` globals here read that plain data. A frame's
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//! `UnitHealth("player")` therefore resolves against a [`UnitState`] the Bevy side deposited that
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//! frame — the same shape a real addon sees, with none of the coupling.
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//!
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//! Return shapes follow the live API (warcraft.wiki.gg): `UnitName` returns the name *or nil*;
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//! `UnitHealth`/`UnitHealthMax`/`UnitLevel` return numbers (`UnitLevel` returns **−1** for a
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//! unit whose level "can't be told" — [`level_reads_unknown`], the target frame's skull gate);
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//! a unit that doesn't exist reports `UnitExists` false and the numbers `0` (nil for the name),
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//! exactly as the client does for an absent unit token. Tokens (`"player"`, `"target"`, …) are opaque strings the host never
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//! interprets — the app decides what each maps to.
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//!
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//! v1 gaps, stated not hidden: the snapshot carries only the *active* power slot (see the
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//! `UnitPower` note below); `UnitIsDead` returns a Lua boolean rather than the client's `1`/nil
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//! (truthy either way — the shape a caller branches on is identical); `UnitIsConnected`'s backing
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//! field defaults `false`, and no app-side feed sets it `true` for live units yet (decision 0434
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//! §2's party-frame predicates land the binding first, the feed follows — see the field doc).
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use mlua::Lua;
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use super::Model;
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/// One unit-token's game-state snapshot, pushed by the app each frame and read by the `Unit*`
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/// bindings. Plain data (no mlua handles, no ECS types) — the engine-free seam decision 0068 §3
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/// draws between the app's net/ECS feed and the Lua API.
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#[derive(Clone, Debug, Default, PartialEq)]
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pub struct UnitState {
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/// Whether the unit exists (`UnitExists`). A token with no snapshot is treated as `false` too.
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pub exists: bool,
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/// The unit's name (`UnitName` → the string, or nil). `None` while the app's name-query cache
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/// hasn't answered (or the server doesn't know the unit).
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pub name: Option<String>,
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/// Current health (`UnitHealth`).
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pub health: u32,
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/// Maximum health (`UnitHealthMax`).
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pub max_health: u32,
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/// Level (`UnitLevel`).
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pub level: u32,
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/// The active power type (`UnitPowerType`): `0` mana, `1` rage, `2` focus, `3` energy,
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/// `4` happiness — the descriptor's `UNIT_FIELD_BYTES_0` byte 3.
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pub power_type: u8,
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/// Current power of the active type (`UnitPower`).
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pub power: u32,
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/// Maximum power of the active type (`UnitPowerMax`).
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pub max_power: u32,
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/// Whether the unit is dead (`UnitIsDead`). NB a released ghost is NOT dead by this
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/// predicate — its wire health is 1 (decision 0308 §1); the trio is dead / [`Self::ghost`] /
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/// dead-or-ghost, the real client's three tests.
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pub dead: bool,
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/// Whether the unit is a released ghost (`UnitIsGhost` — `PLAYER_FLAGS` bit 0x10, decision
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/// 0308 §1). Only meaningful for player tokens; creatures stay `false`.
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pub ghost: bool,
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/// The unit's reaction toward the player on the `UnitReaction` scale (`1` hated … `4` neutral …
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/// `8` exalted; `0` = unknown → `UnitReaction` returns nil). The app resolves it from the
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/// faction-template / reputation decode (the same one the selection ring uses) for the `"target"`
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/// token; other tokens leave it `0`. Read by `UnitReaction`, which the target frame tints its
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/// name plate by (`TargetFrame_CheckFaction`).
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pub reaction: u8,
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/// The unit's localized race display name (`UnitRace`'s first return, e.g. "Night Elf").
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/// `None` = unknown (the race byte hasn't streamed, or a raceless creature) → `UnitRace`
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/// returns nil, nil. The app resolves it from `UNIT_FIELD_BYTES_0` byte 0 (decision 0208 §3).
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pub race: Option<String>,
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/// The race's file/token name (`UnitRace`'s second return, e.g. "NightElf" — 1.12's 8 races),
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/// the shape texture-path splices key on.
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pub race_file: Option<String>,
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/// The unit's localized class display name (`UnitClass`'s first return, e.g. "Warrior").
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pub class: Option<String>,
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/// The class's file name (`UnitClass`'s second return): the **uppercase** token ("WARRIOR")
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/// the ref's stat-tooltip lookups key on (`getglobal(strupper(class).."_STAT_TOOLTIP")` —
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/// the ref uppercases it again defensively; we store it already uppercase).
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pub class_file: Option<String>,
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/// The unit's sex on the `UnitSex` scale: `2` male, `3` female (`1` = neuter/unknown). `0`
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/// (the unfilled default) reports as nil — the API's "can't tell", like [`Self::reaction`].
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/// The app maps `UNIT_FIELD_BYTES_0` byte 2 (0 male / 1 female) onto this shape.
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pub sex: u8,
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/// This token is a PLAYER character (guid family) — the unit tooltip's level line renders
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/// "Race Class (Player)" instead of the creature type (decision 0276's verified law).
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pub is_player: bool,
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/// The NPC subtitle line ("Stable Master") — the creature template's subname; the unit
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/// tooltip's second line. `None` for players/untitled creatures.
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pub subtitle: Option<String>,
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/// The creature TYPE display word ("Beast", "Humanoid", …) — app-resolved from
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/// `CreatureType.dbc`; the level line's class slot for hostile/neutral creatures.
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pub creature_type_name: Option<String>,
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/// Elite rank 0..4 — the creature classification every rank reader in the client shares, via
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/// the one getter `0x605620`: the level line's rank word `{"", Elite, Elite, Boss, ""}` (0276),
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/// `UnitLevel`'s world-boss −1 ([`level_reads_unknown`]), and `UnitClassification`
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/// ([`classification_word`], decision 0782). **Already gated** by the app when it fills this:
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/// the getter answers `0` unless the unit has a cached creature template *and* a zero
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/// `UNIT_FIELD_PETNUMBER`, so a player, an un-queried creature and an enslaved elite all read
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/// `0` here — the gate belongs at the one write, not in each of the three readers.
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pub rank: u32,
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/// The creature civilian flag — feeds the tooltip's green CIVILIAN line (shown only for a
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/// PvP-flagged HOSTILE unit that is also GREY/trivial to the player — the dishonorable-kill
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/// warning, the client's `0x612550` gate; a friendly civilian never shows it).
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pub civilian: bool,
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/// The creature racial-leader flag — the tooltip's white LEADER line (`0x6125c0`, gated on
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/// the same PvP bit as CIVILIAN).
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pub racial_leader: bool,
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/// PvP-flagged (`UNIT_FIELD_FLAGS` PvP bit) — the tooltip's "PvP" line, and also `UnitIsPVP`
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/// (decision 0434 §2: the party-frame PVP icon reads the same flag the tooltip line does, so
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/// there's one field, not two).
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pub pvp: bool,
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/// Skinnable (`UNIT_FIELD_FLAGS` skinnable bit) — the tooltip's RED "Skinnable" line.
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pub skinnable: bool,
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/// The unit's faction display name ("Stormwind") — the tooltip's white line between the
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/// level line and "PvP". App-resolved (Faction.dbc through the unit's faction template,
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/// every gate applied: reputation faction, race/class slot, hidden flag, the creature
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/// HIDE_FACTION_TOOLTIP type flag); `None` = no line.
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pub faction_name: Option<String>,
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/// Connection to the server is live (`UnitIsConnected`) — an offline party member's portrait
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/// desaturates (decision 0434 §2/§3: the `GROUP_LIST` status byte's `0x01` online bit).
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/// **v1 default gap, stated not hidden:** the zero value is `false`, so a snapshot built via
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/// `..Default::default()` reports a unit disconnected unless the app sets this explicitly; the
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/// per-frame feed must set it `true` for every *live* unit token it pushes (mirroring
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/// [`Self::exists`]) — a pending app-side change, not yet wired as of this field's addition. A
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/// token absent from the store (`UnitExists` false) still reports nil regardless, via the same
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/// "no snapshot" path every other predicate here uses.
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pub is_connected: bool,
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/// Away-from-keyboard (`UnitIsAFK` — decision 0434 §2's status-byte `0x40` bit). The party
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/// frame's name line and chat both key off it. App-resolved; `false` until the feed lands.
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pub is_afk: bool,
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/// Do-not-disturb (`UnitIsDND` — decision 0434 §2's status-byte `0x80` bit), the AFK flag's
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/// sibling.
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pub is_dnd: bool,
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/// Free-for-all PvP-flagged (`UnitIsPVPFreeForAll` — decision 0434 §2's status-byte `0x10`
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/// bit) — distinct from [`Self::pvp`]'s ordinary faction PvP flag; a unit can carry either, both,
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/// or neither independently (an FFA zone flags this without the ordinary flag ever setting).
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pub is_pvp_ffa: bool,
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/// The unit's PvP faction group — `"Alliance"` or `"Horde"`, else `None` (`UnitFactionGroup`;
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/// decision 0646 §1). App-resolved from `UNIT_FIELD_FACTIONTEMPLATE` → `FactionTemplate.dbc`'s
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/// group mask, with the Player bit skipped: every playable race's template carries
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/// Player|<side> (mask 3 or 5), and so do the PvP-flagged city guards, so the side bit is the
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/// only one that can name a shipped `UI-PVP-<group>` texture. `None` for Monster/neutral
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/// templates is a state the icon callers explicitly handle (`if ( factionGroup and … )`).
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///
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/// The Era binding returns it twice — English token first, localized name second; enUS ships
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/// the same word for both (FactionGroup.dbc's `InternalName` and `Name0`).
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pub faction_group: Option<String>,
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/// The unit's GUID (`OBJECT_FIELD_GUID`) — the identity the cross-token predicates compare
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/// (`UnitIsUnit`, `UnitInParty`; decision 0434 §5's popup gating). `0` = the app's feed didn't
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/// resolve one; two zero guids never compare equal.
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pub guid: u64,
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/// The raid-target mark on this unit (`GetRaidTargetIndex`): `0` none, `1..=8` the slot.
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/// App-fed from the `GroupState` raid-target board (decision 0434 §6's verified 8-slot table
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/// law) — the phase-5 submenu reads it; the phase-6 world renders draw from the same board.
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pub raid_target: u8,
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/// The player can attack this unit (`UnitCanAttack("player", unit)`) — app-fed from the
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/// byte-confirmed `CanAttack 0x606980` predicate (decision 0172; the flag disqualifiers +
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/// reaction ≤ neutral legs TAB and the combat flash share; the Lua binding `0x516c50` is
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/// pure delegation to it, §5-VERIFIED). Like [`Self::reaction`], the feed resolves it for
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/// the `"target"` token; other tokens leave the default `false` (→ nil), which is right for
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/// every current caller (`TargetFrame_CheckLevel`'s difficulty-color gate).
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pub can_attack: bool,
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/// This token resolves to a **TYPEID_CORPSE world object** — `UnitIsCorpse`'s whole
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/// predicate (`0x5161c0`, §5-VERIFIED: a pure object-type check, no health test; a dead
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/// mob/player is NOT a corpse). No feed sets it yet — corpse objects (a released player's
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/// remains) aren't selectable in benilla — a stated gap, not an oversight.
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pub corpse_object: bool,
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}
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/// The grey-band table `0x80ae98` (a byte-identical twin at `0x81dda8` drives the nameplate's
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/// grey level colour), indexed by `playerLevel / 5` and clamped to 12 past the table. ONE home
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/// for its three consumers: [`unit_is_grey`] (tooltip CIVILIAN gate + the plate's skull/grey
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/// legs), the `GetQuestGreenRange` binding (the FrameXML `GetDifficultyColor` green→grey
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/// boundary), and — through both — every level con the UI shows.
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const GREY_BAND: [u32; 20] = [
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4, 4, 5, 5, 6, 6, 7, 7, 8, 9, 10, 11, 12, 12, 12, 12, 12, 12, 12, 12,
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];
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/// The band value for a player level — `GREY_BAND[min(playerLevel/5, 19)]` (the
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/// `GetQuestGreenRange` return, §5-VERIFIED 2026-07-17: the binding `0x4e17d0` reads the
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/// byte-identical `0x8076c0` twin with exactly this index clamp).
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pub fn grey_band(player_level: u32) -> u32 {
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GREY_BAND
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.get((player_level / 5) as usize)
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.copied()
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.unwrap_or(12)
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}
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/// The trivial/GREY check (`0x5f0700`, §5-VERIFIED 2026-07-17 — was INFERRED): a unit enough
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/// levels *below* the player that it cons grey — `playerLevel − unitLevel >
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/// GREY_BAND[playerLevel/5]`, **strict >** (diff == band is still green). The binary's full
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/// predicate also requires not-player-controlled; every consumer here applies this to creatures.
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pub fn unit_is_grey(player_level: u32, unit_level: u32) -> bool {
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player_level > unit_level && player_level - unit_level > grey_band(player_level)
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}
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/// The "level reads ??" gate — the engine tooltip's byte-pinned leg set (`0x529fe0` §2-LEVEL):
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/// never players; level 0 (unstreamed), world-boss rank 3, or a much-higher hostile (reaction
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/// ≤ 2 on the 1..8 API scale, unit ≥ player + 10 — **inclusive**, byte-confirmed). The Lua
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/// `UnitLevel`'s −1 law was §5-VERIFIED against this (wow-re `ui/scratch/
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/// level-assess-bindings.md`, 2026-07-17): its two −1 legs are exactly the boss + hostile-≥10
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/// legs here (no trivial-gray term exists in `0x517fc0`, and none is possible at ≥ +10), with
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/// ONE divergence the binding handles itself — a raw level ≤ 0 returns VERBATIM, not −1
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/// (same skull outcome in FrameXML; the tooltip's "??" keeps the level-0 leg per its own law).
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pub fn level_reads_unknown(u: &UnitState, player_level: u32) -> bool {
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let much_higher_hostile =
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u.reaction != 0 && u.reaction <= 2 && u.level >= player_level.saturating_add(10);
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!u.is_player && (u.level == 0 || u.rank == 3 || much_higher_hostile)
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}
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/// `UnitClassification`'s return — the classification-word table, **byte-verified** at `0x850424`
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/// (decision 0782): the binding `0x516d90` is nothing but `TABLE[rank(unit)]`, indexed by the same
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/// gated rank [`UnitState::rank`] carries. The table is exactly five entries long (the sixth dword
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/// at `0x850438` is an unrelated `"UnitExists"` literal), and rank comes pre-clamped to 0..4 by
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/// `CreatureInfo+0x20`, so an out-of-range value can only be our own bug — it reads `"normal"`,
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/// which is also what the binding's unresolved-token path pushes (`0x516dc4` loads index 0).
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///
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/// Note `"rareelite"` is a real return here even though 1.12 has no rare-elite *art* and no
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/// rare-elite tooltip *word* — the reference's `TargetFrame_CheckClassification` sends it to the
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/// same Elite border as `"elite"`, and the tooltip's `{"", Elite, Elite, Boss, ""}` prints ELITE for
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/// it. The distinction exists in the API and nowhere in the pixels.
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pub fn classification_word(rank: u32) -> &'static str {
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match rank {
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1 => "elite",
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2 => "rareelite",
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3 => "worldboss",
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4 => "rare",
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_ => "normal",
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}
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}
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/// The Era power-token string for a power-type index (`UnitPowerType`'s second return,
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/// `UNIT_POWER_UPDATE`'s arg2). Unknown indices report as mana, the descriptor default.
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pub fn power_token(ty: u8) -> &'static str {
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match ty {
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1 => "RAGE",
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2 => "FOCUS",
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3 => "ENERGY",
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4 => "HAPPINESS",
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_ => "MANA",
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}
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}
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impl super::UiScript {
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/// Push (or clear) a unit token's snapshot. `Some(state)` stores it under `token`; `None` removes
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/// it (so `UnitExists(token)` reports false and the numeric getters return `0`). The app's
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/// per-frame feed (decision 0068 §3) calls this for `"player"`/`"target"`/… before the VM's
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/// event dispatch, so a frame's `OnEvent` sees the current values.
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pub fn set_unit(&mut self, token: &str, state: Option<UnitState>) {
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{
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let mut model = self.model_mut();
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match state {
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Some(s) => {
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model.units.insert(token.to_string(), s);
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}
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None => {
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model.units.remove(token);
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}
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}
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}
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// A push for a tooltip's LIVE unit token re-drives its health bar (the byte law's
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// HEALTH watcher — decision 0276; no line rebuild).
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super::tooltip_unit::on_unit_push(&self.lua, token);
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}
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/// Push the player's purse in copper (`PLAYER_FIELD_COINAGE`), read by the `GetMoney` global. A
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/// player-level snapshot (like the unit tokens) — the app calls this each frame the coinage
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/// field changes (decision 0081 phase 4).
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pub fn set_money(&mut self, copper: u64) {
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self.model_mut().money = copper;
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}
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/// Push the player's experience within the level (`PLAYER_XP`) and the level's requirement
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/// (`PLAYER_NEXT_LEVEL_XP`), read by the `UnitXP`/`UnitXPMax` globals. A player-level pair (like
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/// [`Self::set_money`]) — the app calls this each frame the XP fields change (the MainMenuBar XP
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/// bar feed). Both PRIVATE descriptor fields, so this only ever carries our own avatar's values.
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pub fn set_player_xp(&mut self, xp: u32, next_level_xp: u32) {
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let mut model = self.model_mut();
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model.player_xp = xp;
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model.player_next_level_xp = next_level_xp;
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}
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/// Push the player's rest snapshot — the `PLAYER_BYTES_2` byte 3 rest state, the
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/// `PLAYER_REST_STATE_EXPERIENCE` pool (raw wire value, base kill-XP units) and the
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/// `PLAYER_FLAGS_RESTING` bit — taken together so the `GetRestState`/`GetXPExhaustion`/
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/// `IsResting` trio can never read a half-updated rest picture. Player-level fields, same
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/// shape as [`Self::set_money`]; the app calls this each frame any of the three moves
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/// (decision 1082).
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pub fn set_rest_state(&mut self, state: u8, pool: u32, resting: bool) {
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let mut model = self.model_mut();
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model.rest_state = state;
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model.rest_pool = pool;
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model.resting = resting;
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}
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/// Push Exhaustion.dbc — `(rest-state byte, localized name, factor)` rows for the
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/// `GetRestState`/`GetXPExhaustion` bindings (they read the table exactly as `0x48d350` /
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/// `0x48d3f0` read the client's own copy; decision 1087). Called once at startup off the
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/// patch chain; an empty push is ignored so a failed DBC read keeps the shipped-table
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/// fallback the model seeds.
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pub fn set_exhaustion_rows(&mut self, rows: Vec<(u8, String, f64)>) {
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if rows.is_empty() {
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return;
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}
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let mut model = self.model_mut();
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model.exhaustion = rows.into_iter().map(|(id, n, f)| (id, (n, f))).collect();
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}
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/// Push the player's banked combo points (`PLAYER_FIELD_BYTES` byte 1) and the unit they sit
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/// on (`PLAYER_FIELD_COMBO_TARGET`) — the pair `Player::SetComboPoints` writes together, taken
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/// together so they can never be read half-updated. Player-level PRIVATE fields, same shape as
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/// [`Self::set_money`]; the app calls this each frame either moves, including the drop back to
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/// zero (decisions 0869, 0875).
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///
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/// **Raw wire values** — `GetComboPoints`'s class and current-target gates live in the binding,
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/// where the binary puts them.
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pub fn set_combo_points(&mut self, points: u8, target: u64) {
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let mut model = self.model_mut();
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model.combo_points = points;
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model.combo_target = target;
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}
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/// Drain the unit tokens `TargetUnit` queued since the last call — the app resolves each to a
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/// streamed entity and commits the selection (the reference's `TargetUnit` → SetSelection path).
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pub fn take_target_requests(&mut self) -> Vec<String> {
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std::mem::take(&mut self.model_mut().target_requests)
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}
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/// Drain the `ClearTarget()` trigger: `true` if it fired with a live target since the last
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/// call — the ESC chain's last leg; the app commits the deselect (SetSelection guid 0).
|
||
pub fn take_target_clear(&mut self) -> bool {
|
||
std::mem::take(&mut self.model_mut().target_clear)
|
||
}
|
||
|
||
/// Drain the unit tokens `DropItemOnUnit` queued since the last call — the app runs every gate
|
||
/// and, on the pet leg, casts the learned Feed Pet spell at the held item (`0x48d960`).
|
||
pub fn take_drop_item_on_unit(&mut self) -> Vec<String> {
|
||
std::mem::take(&mut self.model_mut().drop_item_on_unit)
|
||
}
|
||
}
|
||
|
||
/// Pick the interesting token from a directional two-unit call (`UnitIsEnemy(a, b)`): whichever
|
||
/// arg isn't `"player"` — our snapshot stores the relationship on the non-player unit (target),
|
||
/// and the ref calls both argument orders.
|
||
fn pick_unit_token(a: &Option<String>, b: &Option<String>) -> Option<String> {
|
||
match (a, b) {
|
||
(Some(x), _) if x != "player" => Some(x.clone()),
|
||
(_, Some(y)) => Some(y.clone()),
|
||
(x, _) => x.clone(),
|
||
}
|
||
}
|
||
|
||
/// Read a unit token's snapshot under a short model borrow, mapping it through `f`; `default` when the
|
||
/// token is absent (the "unit doesn't exist" path).
|
||
fn with_unit<T>(
|
||
lua: &Lua,
|
||
token: &Option<String>,
|
||
default: T,
|
||
f: impl FnOnce(&UnitState) -> T,
|
||
) -> T {
|
||
let model = lua.app_data_ref::<Model>().expect("model app_data");
|
||
match token.as_ref().and_then(|t| model.units.get(t)) {
|
||
Some(u) => f(u),
|
||
None => default,
|
||
}
|
||
}
|
||
|
||
/// The `Unit*`/`GetQuestGreenRange` Lua binding registrations — split from this module's
|
||
/// state+laws half purely for size (same seam as the other script modules' install fns).
|
||
mod bindings;
|
||
#[cfg(test)]
|
||
mod tests;
|
||
|
||
pub(super) use bindings::install;
|