Files
benilla-octo/crates/benilla-ui/src/script/merchant.rs
T
SamandClaude Fable 5 cf581aa2ac the auction house opens, the Honor tab lands, and a day of fixes
- the auction house end to end: right-clicking an auctioneer opens Browse/Bids/Auctions on the server's reply — search, the category tree from your own DBCs, the reference's 50-a-page pager, multi-key sorting (directions corrected at the bytes), bid/buyout, the sell slot with deposit and duration, cancel with its fee popup; prices sit on the reference's own money-frame kit in lined-up columns, the twenty auction messages split refusals-red / outcomes-to-chat, and a won or sold auction reads as a proper mail receipt — the window's Lua re-worded in our own terms after the overlap ratchet caught the first cut leaning on the reference's text
- the PvP honor system whole: the Honor tab and the inspect page over a real wire model, with current rank and highest-ever rank correctly two different fields
- a day of reported fixes: WASD survives a /logout re-entry, addon settings save on a window close and Cmd+Q (exactly once — a mac close could fire the tail twice), clams open again, random-enchant items name themselves on every surface, the loot window's rows hold their seats with legible counts, idle players stop sinking through building floors, the shooter re-pulls between Auto Shots, portraits loosen ~19% to the client's own aspect-1.0 matrix, and big creatures thump the camera off the CameraShakes table
- character select clicks like 1.12 — captions whiten on hover, buttons fire on release, Humans face straight ahead off the stage bone's real yaw, the facing is per-character, and hunter/warlock pets stand beside you at their family-ramp size with their own emitters (the imp's flames), the Voidwalker's sequence-hidden shackles culled
- the smaller player-facing set: nameplate on/off rows in Options with the CanAttack category gate (emissaries stop plating), the bonus bar slides up with igBonusBarOpen, the camera's framing height glides on a shapeshift, the open letter evicts the centre seat, the far-band fog hull stops printing a pale horizon stripe at low view distance, the guide arrow is gold with per-source rim art, error text fades through its shadow too, and /convertraid converts the party
- README: the auction house and PvP honor move out of "not built yet"

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-08-22 19:04:27 +07:00

857 lines
36 KiB
Rust

//! The merchant bindings (decision 0081 phase 4) — the Era-shaped vendor surface, the same two-way
//! seam as [`super::container`]/[`super::gossip`]: the app pushes a **merchant snapshot**
//! ([`UiScript::set_merchant`] — the vendor rows already resolved from the wire to name/icon/price
//! by the app's item stores), and the Lua `BuyMerchantItem`/`CloseMerchant` calls queue outbound
//! **intents** the app drains ([`UiScript::take_merchant_buys`] / [`UiScript::take_merchant_close`]).
//! The engine holds no vendor knowledge — a row is "a name, an icon path, a price, a stack size,
//! how many are left, and the tooltip's stat head" ([`ItemStatsHead`], read by
//! `BenillaGetMerchantItemStats`).
//!
//! ## The 5875 API shape
//!
//! 1.12's `GetMerchantItemInfo(index)` returns a flat **6-value** tuple the FrameXML reads
//! positionally — `name, texture, price, quantity, numAvailable, isUsable` (byte-verified,
//! `0x4fb150`; the ref's own `MerchantFrame_UpdateMerchantInfo` destructures exactly these six.
//! The `isPurchasable`/`extendedCost` extras an earlier draft carried are TBC-era, not 5875).
//! `index` is **1-based**; an invalid index answers the binding's fixed tuple
//! `(nil, nil, 0, 1, 0, 1)` — same shape as `GetBuybackItemInfo`'s (`0x4fb2be`). `numAvailable`
//! is `-1` for unlimited stock (the wire's `0xFFFF_FFFF` through `fild`, mapped by the app).
//! `isUsable` is `1`/`nil` (the client pushes a number or nil, never a boolean): the
//! [`super::item_stats::item_usable`] gate over the row's template — a template still in flight
//! reads usable, the getter's null-record skip (`0x4fb298`).
//!
//! Buying addresses the row by its **1-based list position** here (`BuyMerchantItem(index)`); the app
//! maps that position to the item *entry* the wire's `CMSG_BUY_ITEM` needs (buy is by entry, not the
//! vendor `muid` — decision 0081). vanilla's client-side `CloseMerchant()` sends no packet, so it
//! just flags the app to clear its local state (the gossip pattern).
use mlua::{Lua, MultiValue, Value};
use super::container::UiCursorMode;
use super::Model;
/// One vendor row, resolved by the app from the wire `VendorItem` (decision 0081). Plain data —
/// 1-based order in the window is its position in [`MerchantState::items`].
#[derive(Clone, Debug, Default, PartialEq)]
pub struct MerchantItem {
/// The item name (`GetMerchantItemInfo`'s first return); `None` while the ask-once item-template
/// query is still in flight (the API reports `nil`, the XML shows a placeholder).
pub name: Option<String>,
/// Icon texture path (`Interface\Icons\…`); `None` while the template answer is in flight.
pub texture: Option<String>,
/// Buy price in copper (already reputation-discounted server-side).
pub price: u32,
/// Stack size delivered per purchase (`item_template.buy_count`, the wire's `buy_count`).
pub quantity: u32,
/// Remaining stock, or `-1` for unlimited (the app maps the wire's `0xFFFF_FFFF`).
pub num_available: i32,
/// The item's template **entry** — what `CMSG_BUY_ITEM` addresses (the app maps the clicked
/// 1-based row to this; the Lua side never sees it).
pub item_id: u32,
/// The stat head the hover tooltip renders, from the same ask-once template answer as `name`
/// (`None` while it's in flight — the tooltip shows nothing it can't know yet). Still plain
/// data: the engine renders whatever numbers the app resolved, it holds no item model.
pub stats: Option<ItemStatsHead>,
/// The row's full escaped `|cff…|Hitem:…|h[Name]|h|r` link (`GetMerchantItemLink`, decision
/// 1059) — what the row click's ctrl/shift arms hand to `DressUpItemLink` /
/// `ChatFrameEditBox:Insert` (`MerchantFrame.lua:303`/`:306`). `None` while the template answer
/// is in flight (the link embeds the name), and `None` on a **buyback** row: 1.12 has no
/// `GetBuybackItemLink` — the reference's buyback arm is an unmodified `BuybackItem(this:GetID())`
/// with no ctrl/shift branch at all (`MerchantFrame.lua:358-361`), so nothing would read it.
pub link: Option<String>,
}
/// An item template's tooltip stat head (the app's `ItemInfo` view, resolved per row): what the
/// vendor hover tooltip needs beyond name/icon/price. The real client's `GameTooltip:SetMerchantItem`
/// reads the same template fields C++-side; benilla feeds them to Lua through
/// `BenillaGetMerchantItemStats(index)` (no 1.12 Lua API carries damage/armor — tooltip content was
/// C++'s alone — so the feed is benilla-named, not Era-shaped).
#[derive(Clone, Copy, Debug, Default, PartialEq)]
pub struct ItemStatsHead {
/// 0 poor … 6 artifact — colours the tooltip's name line.
pub quality: u32,
/// `InventoryType` — the tooltip's slot line ("Main Hand", "Chest", …); 0 = no slot line.
pub inventory_type: u32,
/// Item class (2 weapon, 4 armor, 6 projectile) — with `subclass`, the slot line's right column.
pub class: u32,
/// Item subclass within `class` (7 = sword, 1 = cloth, …).
pub subclass: u32,
/// Damage block 0 per-hit minimum (0 for non-weapons).
pub dmg_min: f32,
/// Damage block 0 per-hit maximum.
pub dmg_max: f32,
/// Damage block 0 school (0 physical, 1 Holy … 6 Arcane).
pub dmg_type: u32,
/// Attack delay in milliseconds ("Speed" = delay / 1000).
pub delay_ms: u32,
/// The armor line's value; 0 = no line.
pub armor: u32,
/// A shield's block line; 0 = no line.
pub block: u32,
/// `SellPrice` — what a vendor pays per unit (the bag tooltip's money row while a merchant is
/// open; 0 = the "No sell price" line).
pub sell_price: u32,
}
/// One open merchant window: the vendor's rows, the buyback slots, and the repair head. Pushed
/// whole by the app; `None` means no vendor is open (the window is closed).
#[derive(Clone, Debug, Default, PartialEq)]
pub struct MerchantState {
pub items: Vec<MerchantItem>,
/// The buyback slots, oldest-first (index 1 = the oldest; the LAST entry is the most recent
/// sale — the one the merchant page's single buyback slot shows, ref
/// `GetBuybackItemInfo(GetNumBuybackItems())`). Resolved by the app from the player's
/// VENDORBUYBACK descriptor fields + the item stores; `price` here is the buyback price
/// field, `quantity` the stored item's stack count.
pub buyback: Vec<MerchantItem>,
/// Whether this vendor repairs (UNIT_NPC_FLAGS repair bit) — shows the repair buttons.
pub can_repair: bool,
/// The repair-all cost in copper the app computed (0 = nothing to repair → the repair-all
/// button disables, ref MerchantFrame_OnShow).
pub repair_all_cost: u32,
}
impl super::UiScript {
/// Push (or clear, with `None`) the open merchant's stock snapshot.
pub fn set_merchant(&mut self, state: Option<MerchantState>) {
self.model_mut().merchant = state;
}
/// Drain the `(index, quantity)` buy intents queued by `BuyMerchantItem` since the last call.
/// `index` is the 1-based row position; the app maps it to the item entry the wire needs.
pub fn take_merchant_buys(&mut self) -> Vec<(u32, u32)> {
std::mem::take(&mut self.model_mut().merchant_buys)
}
/// Whether `CloseMerchant` was called since the last drain (and clear the flag). vanilla's
/// client-side close sends no packet — the app just clears its local merchant state.
pub fn take_merchant_close(&mut self) -> bool {
std::mem::take(&mut self.model_mut().merchant_close)
}
/// Drain the 1-based buyback-slot intents queued by `BuybackItem` since the last call. The app
/// maps each to the wire's absolute buyback inventory slot.
pub fn take_merchant_buybacks(&mut self) -> Vec<u32> {
std::mem::take(&mut self.model_mut().merchant_buybacks)
}
/// Whether `RepairAllItems` was called since the last drain (and clear the flag). The app
/// sends the repair-all wire message.
pub fn take_repair_all(&mut self) -> bool {
std::mem::take(&mut self.model_mut().repair_all)
}
/// The client-side repair-mode latch (`ShowRepairCursor`/`HideRepairCursor`/`InRepairMode`):
/// while set, a bag/equipment click means "repair this item" — the app reads this to route
/// clicks and swap the hardware cursor.
pub fn repair_mode(&self) -> bool {
self.model_ref().repair_mode
}
}
/// `1`/`nil` — how the client pushes a usable flag (`pushnumber(1.0)` / `pushnil`).
fn usable_value(usable: bool) -> Value {
if usable {
Value::Integer(1)
} else {
Value::Nil
}
}
/// The invalid-index tuple both getters answer (`0x4fb2be` / the buyback equivalent):
/// `(nil, nil, 0, 1, 0, 1)` — still six values.
fn invalid_tuple() -> Vec<Value> {
vec![
Value::Nil,
Value::Nil,
Value::Integer(0),
Value::Integer(1),
Value::Integer(0),
Value::Integer(1),
]
}
/// Register the merchant globals.
pub(super) fn install(lua: &Lua) -> mlua::Result<()> {
let g = lua.globals();
// → the number of rows the open vendor has (0 when no vendor is open).
g.set(
"GetMerchantNumItems",
lua.create_function(|lua, ()| {
let model = lua.app_data_ref::<Model>().expect("model app_data");
Ok(model.merchant.as_ref().map_or(0, |m| m.items.len()) as i64)
})?,
)?;
// GetMerchantItemInfo(index) → name, texture, price, quantity, numAvailable, isUsable — the
// byte-verified 5875 6-tuple (0x4fb150; see the module doc). `index` is 1-based; an invalid
// index answers the fixed tuple (nil, nil, 0, 1, 0, 1).
g.set(
"GetMerchantItemInfo",
lua.create_function(|lua, index: usize| {
let (item, usable) = {
let model = lua.app_data_ref::<Model>().expect("model app_data");
let item = model
.merchant
.as_ref()
.and_then(|m| index.checked_sub(1).and_then(|n| m.items.get(n)))
.cloned();
let usable = item
.as_ref()
.is_none_or(|it| super::item_stats::item_usable_by_id(&model, it.item_id));
(item, usable)
};
let Some(it) = item else {
return Ok(MultiValue::from_vec(invalid_tuple()));
};
let name = match &it.name {
Some(n) => Value::String(lua.create_string(n)?),
None => Value::Nil,
};
let texture = match &it.texture {
Some(t) => Value::String(lua.create_string(t)?),
None => Value::Nil,
};
Ok(MultiValue::from_vec(vec![
name,
texture,
Value::Integer(i64::from(it.price)),
Value::Integer(i64::from(it.quantity)),
Value::Integer(i64::from(it.num_available)),
usable_value(usable),
]))
})?,
)?;
// GetMerchantItemLink(index) → the row's full escaped `|cff…|Hitem:…|h[Name]|h|r` link | nil.
// 1-based like GetMerchantItemInfo; nil out of range and nil while the row's template answer is
// in flight (the link embeds the name). The reference's row click reads it for both LEFT-button
// modifier arms — `DressUpItemLink(GetMerchantItemLink(this:GetID()))` (`MerchantFrame.lua:303`)
// and `ChatFrameEditBox:Insert(...)` (`:306`); ours routes the second through
// `BenillaChatEdit_InsertLink`, whose whole job is the nil this getter can answer. Merchant rows
// only: see [`MerchantItem::link`] for why a buyback row carries none. Decision 1059.
g.set(
"GetMerchantItemLink",
lua.create_function(|lua, index: usize| {
let link = {
let model = lua.app_data_ref::<Model>().expect("model app_data");
model
.merchant
.as_ref()
.and_then(|m| index.checked_sub(1).and_then(|n| m.items.get(n)))
.and_then(|it| it.link.clone())
};
match link {
Some(link) => Ok(Value::String(lua.create_string(&link)?)),
None => Ok(Value::Nil),
}
})?,
)?;
// BenillaGetMerchantItemStats(index) → quality, invType, class, subclass, dmgMin, dmgMax,
// dmgType, delayMs, armor, block — the tooltip stat head ([`ItemStatsHead`]), or nil while
// the row's template answer is in flight / the index is out of range. Benilla-named: 1.12's Lua
// API never carried these (item tooltip content was C++'s alone — `SetMerchantItem 0x534080`).
g.set(
"BenillaGetMerchantItemStats",
lua.create_function(|lua, index: usize| {
let stats = {
let model = lua.app_data_ref::<Model>().expect("model app_data");
model
.merchant
.as_ref()
.and_then(|m| index.checked_sub(1).and_then(|n| m.items.get(n)))
.and_then(|it| it.stats)
};
let Some(s) = stats else {
return Ok(MultiValue::from_vec(vec![Value::Nil]));
};
Ok(MultiValue::from_vec(vec![
Value::Integer(i64::from(s.quality)),
Value::Integer(i64::from(s.inventory_type)),
Value::Integer(i64::from(s.class)),
Value::Integer(i64::from(s.subclass)),
Value::Number(f64::from(s.dmg_min)),
Value::Number(f64::from(s.dmg_max)),
Value::Integer(i64::from(s.dmg_type)),
Value::Integer(i64::from(s.delay_ms)),
Value::Integer(i64::from(s.armor)),
Value::Integer(i64::from(s.block)),
]))
})?,
)?;
// BuyMerchantItem(index [, quantity]) — queue the 1-based row + stack count (default 1); the app
// maps the row to the item entry the wire addresses.
g.set(
"BuyMerchantItem",
lua.create_function(|lua, (index, quantity): (u32, Option<u32>)| {
let mut model = lua.app_data_mut::<Model>().expect("model app_data");
model.merchant_buys.push((index, quantity.unwrap_or(1)));
Ok(())
})?,
)?;
// CloseMerchant() — client-side close (no packet, vanilla): flag it so the app clears its state.
g.set(
"CloseMerchant",
lua.create_function(|lua, ()| {
let mut model = lua.app_data_mut::<Model>().expect("model app_data");
model.merchant_close = true;
Ok(())
})?,
)?;
// → how many buyback slots are filled (ref GetNumBuybackItems; 0 with no vendor open).
g.set(
"GetNumBuybackItems",
lua.create_function(|lua, ()| {
let model = lua.app_data_ref::<Model>().expect("model app_data");
Ok(model.merchant.as_ref().map_or(0, |m| m.buyback.len()) as i64)
})?,
)?;
// GetBuybackItemInfo(index) → name, texture, price, quantity, numAvailable, isUsable (the
// same 6-tuple; 0x4fb310, wow-re ui/scratch/buyback-data-path.md). `index` is 1-based
// oldest-first; an invalid index answers the fixed tuple (nil, nil, 0, 1, 0, 1). isUsable is
// the same 0x5ea930 gate over the sold item's template (0x4fb4f7) — yes, even a just-sold
// item reds if the seller can't use it (a mule selling a wrong-class drop).
g.set(
"GetBuybackItemInfo",
lua.create_function(|lua, index: usize| {
let (item, usable) = {
let model = lua.app_data_ref::<Model>().expect("model app_data");
let item = model
.merchant
.as_ref()
.and_then(|m| index.checked_sub(1).and_then(|n| m.buyback.get(n)))
.cloned();
let usable = item
.as_ref()
.is_none_or(|it| super::item_stats::item_usable_by_id(&model, it.item_id));
(item, usable)
};
let Some(it) = item else {
return Ok(MultiValue::from_vec(invalid_tuple()));
};
let name = match &it.name {
Some(n) => Value::String(lua.create_string(n)?),
None => Value::Nil,
};
let texture = match &it.texture {
Some(t) => Value::String(lua.create_string(t)?),
None => Value::Nil,
};
Ok(MultiValue::from_vec(vec![
name,
texture,
Value::Integer(i64::from(it.price)),
Value::Integer(i64::from(it.quantity)),
Value::Integer(i64::from(it.num_available)),
usable_value(usable),
]))
})?,
)?;
// BenillaGetBuybackItemStats(index) — the buyback hover's tooltip stat head, same shape and
// reason as BenillaGetMerchantItemStats.
g.set(
"BenillaGetBuybackItemStats",
lua.create_function(|lua, index: usize| {
let stats = {
let model = lua.app_data_ref::<Model>().expect("model app_data");
model
.merchant
.as_ref()
.and_then(|m| index.checked_sub(1).and_then(|n| m.buyback.get(n)))
.and_then(|it| it.stats)
};
let Some(s) = stats else {
return Ok(MultiValue::from_vec(vec![Value::Nil]));
};
Ok(MultiValue::from_vec(vec![
Value::Integer(i64::from(s.quality)),
Value::Integer(i64::from(s.inventory_type)),
Value::Integer(i64::from(s.class)),
Value::Integer(i64::from(s.subclass)),
Value::Number(f64::from(s.dmg_min)),
Value::Number(f64::from(s.dmg_max)),
Value::Integer(i64::from(s.dmg_type)),
Value::Integer(i64::from(s.delay_ms)),
Value::Integer(i64::from(s.armor)),
Value::Integer(i64::from(s.block)),
]))
})?,
)?;
// BuybackItem(index) — queue the 1-based buyback slot; the app maps it to the wire's absolute
// inventory slot.
g.set(
"BuybackItem",
lua.create_function(|lua, index: u32| {
let mut model = lua.app_data_mut::<Model>().expect("model app_data");
model.merchant_buybacks.push(index);
Ok(())
})?,
)?;
// CanMerchantRepair() → 1/nil (the Era boolean shape) — whether the open vendor repairs.
g.set(
"CanMerchantRepair",
lua.create_function(|lua, ()| {
let can = {
let model = lua.app_data_ref::<Model>().expect("model app_data");
model.merchant.as_ref().is_some_and(|m| m.can_repair)
};
Ok(if can { Value::Integer(1) } else { Value::Nil })
})?,
)?;
// GetRepairAllCost() → cost, canRepair — the app-computed repair-all total; canRepair is
// "there is damage to pay for" (ref MerchantFrame_OnShow enables the button on it).
g.set(
"GetRepairAllCost",
lua.create_function(|lua, ()| {
let cost = {
let model = lua.app_data_ref::<Model>().expect("model app_data");
model.merchant.as_ref().map_or(0, |m| m.repair_all_cost)
};
Ok(MultiValue::from_vec(vec![
Value::Integer(i64::from(cost)),
Value::Boolean(cost > 0),
]))
})?,
)?;
// RepairAllItems() — flag the repair-all intent for the app to send.
g.set(
"RepairAllItems",
lua.create_function(|lua, ()| {
let mut model = lua.app_data_mut::<Model>().expect("model app_data");
model.repair_all = true;
Ok(())
})?,
)?;
// The repair-mode latch trio (ref MerchantRepairItemButton OnClick): ShowRepairCursor arms
// "next item click repairs", HideRepairCursor disarms, InRepairMode() → 1/nil reads it. The
// app reads UiScript::repair_mode to route clicks + swap the hardware cursor.
g.set(
"ShowRepairCursor",
lua.create_function(|lua, ()| {
lua.app_data_mut::<Model>()
.expect("model app_data")
.repair_mode = true;
Ok(())
})?,
)?;
g.set(
"HideRepairCursor",
lua.create_function(|lua, ()| {
lua.app_data_mut::<Model>()
.expect("model app_data")
.repair_mode = false;
Ok(())
})?,
)?;
g.set(
"InRepairMode",
lua.create_function(|lua, ()| {
let mode = lua
.app_data_ref::<Model>()
.expect("model app_data")
.repair_mode;
Ok(if mode { Value::Integer(1) } else { Value::Nil })
})?,
)?;
// ShowMerchantSellCursor(index) (5875 `0x4fbab0`, "buying from vendor") and
// ShowBuybackSellCursor(index) (`0x4fbbb0`, "re-buying") — the vendor-item hover cursor
// (wow-re cursor-system.md §7). Despite the "Sell" in the names, these arm the BUY cursor with
// an affordability gate: player coin vs the row's price → Buy(3) if `coin >= price`, else the
// grayed UnableBuy(23). The merchant frame's OnUpdate re-arms this every frame while an item is
// hovered (Ctrl-hover swaps to `ShowInspectCursor` instead); OnLeave `ResetCursor`s it. An
// unresolvable index leaves the cursor unchanged — the binary's every-fail-path `ret` with no
// `CursorSetMode` (the in-flight item lock and base-mode-Point gates live app-side).
g.set(
"ShowMerchantSellCursor",
lua.create_function(|lua, index: usize| {
arm_vendor_cursor(lua, |m| {
m.items.get(index.wrapping_sub(1)).map(|it| it.price)
});
Ok(())
})?,
)?;
g.set(
"ShowBuybackSellCursor",
lua.create_function(|lua, index: usize| {
arm_vendor_cursor(lua, |m| {
m.buyback.get(index.wrapping_sub(1)).map(|it| it.price)
});
Ok(())
})?,
)?;
Ok(())
}
/// Arm the vendor-item hover cursor from a `price` picked out of the open merchant snapshot: Buy(3)
/// if the player can afford it, UnableBuy(23) otherwise. Shared by `ShowMerchantSellCursor` and
/// `ShowBuybackSellCursor` (which differ only in which price list they read). A `None` price (no
/// vendor open, or the 1-based index out of range) leaves the cursor untouched — the binary bails
/// without a `CursorSetMode` (wow-re cursor-system.md §7).
fn arm_vendor_cursor(lua: &Lua, price_of: impl FnOnce(&MerchantState) -> Option<u32>) {
let mut model = lua.app_data_mut::<Model>().expect("model app_data");
// The sell-cursor family bails on `IsTargeting` at its first instruction (wow-re
// `item-target-cursor-and-dropitemonunit.md`) — an armed spell keeps its cast cursor.
if model.spell_targeting {
return;
}
let Some(price) = model.merchant.as_ref().and_then(price_of) else {
return;
};
model.ui_cursor = Some(if model.money >= u64::from(price) {
UiCursorMode::Buy
} else {
UiCursorMode::UnableBuy
});
model.ui_cursor_dirty = true;
}
#[cfg(test)]
mod tests {
use super::{ItemStatsHead, MerchantItem, MerchantState};
use crate::script::UiScript;
fn stock() -> MerchantState {
MerchantState {
items: vec![
MerchantItem {
name: Some("Refreshing Spring Water".into()),
texture: Some("Interface\\Icons\\INV_Drink_18".into()),
price: 25,
quantity: 1,
num_available: -1, // unlimited
item_id: 159,
// A consumable's stat head: everything zero but the quality.
stats: Some(ItemStatsHead {
quality: 1,
..Default::default()
}),
link: Some("|cffffffff|Hitem:159:0:0:0|h[Refreshing Spring Water]|h|r".into()),
},
// An in-flight row: the vendor list arrived, the item-template answer hasn't.
MerchantItem {
name: None,
texture: None,
price: 1500,
quantity: 1,
num_available: 3,
item_id: 4540,
stats: None,
link: None,
},
],
..Default::default()
}
}
#[test]
fn merchant_snapshot_reads() {
let mut s = UiScript::new().unwrap();
// No vendor open: count 0, info nil.
assert_eq!(s.eval::<i64>("return GetMerchantNumItems()").unwrap(), 0);
assert!(s
.eval::<bool>("return GetMerchantItemInfo(1) == nil")
.unwrap());
s.set_merchant(Some(stock()));
assert_eq!(s.eval::<i64>("return GetMerchantNumItems()").unwrap(), 2);
// Row 1 (resolved): the byte-verified 6-tuple (0x4fb150) — isUsable is 1, not a boolean.
let (name, texture, price, quantity, num, usable) = s
.eval::<(String, String, i64, i64, i64, i64)>("return GetMerchantItemInfo(1)")
.unwrap();
assert_eq!(name, "Refreshing Spring Water");
assert_eq!(texture, "Interface\\Icons\\INV_Drink_18");
assert_eq!((price, quantity, num), (25, 1, -1));
assert_eq!(usable, 1);
// Row 2 (in flight): name + texture nil, the rest still present — and usable (the
// null-record skip: no template answer, nothing to judge).
assert!(s
.eval::<bool>(
"local n, t, p, q, a, u = GetMerchantItemInfo(2)\n\
return n == nil and t == nil and p == 1500 and u == 1",
)
.unwrap());
// An invalid index answers the fixed 6-tuple (nil, nil, 0, 1, 0, 1) — 0x4fb2be.
assert!(s
.eval::<bool>(
"local n, t, p, q, a, u = GetMerchantItemInfo(9)\n\
return n == nil and t == nil and p == 0 and q == 1 and a == 0 and u == 1",
)
.unwrap());
// GetMerchantItemLink: the resolved row's link; nil while the template is in flight and nil
// out of range (the row click's ctrl/shift arms hand this straight on — decision 1059).
assert_eq!(
s.eval::<String>("return GetMerchantItemLink(1)").unwrap(),
"|cffffffff|Hitem:159:0:0:0|h[Refreshing Spring Water]|h|r"
);
assert!(s
.eval::<bool>("return GetMerchantItemLink(2) == nil")
.unwrap());
assert!(s
.eval::<bool>("return GetMerchantItemLink(9) == nil")
.unwrap());
}
/// The isUsable leg end-to-end: the gate reads the shared template store + the player req
/// state, so a level-short player reds the row (nil), levelling past it whitens (1), and the
/// same flag drives the buyback tuple.
#[test]
fn merchant_usable_tracks_the_item_gate() {
use crate::script::{ItemTemplateView, PlayerReqState};
let mut s = UiScript::new().unwrap();
let mut state = stock();
state.buyback = vec![MerchantItem {
name: Some("Light Mail Gloves".into()),
texture: Some("Interface\\Icons\\INV_Gauntlets_05".into()),
price: 47,
quantity: 1,
item_id: 2418,
..Default::default()
}];
s.set_merchant(Some(state));
s.set_item_template(
159, // row 1: the spring water becomes level-gated for the test
ItemTemplateView {
name: "Refreshing Spring Water".into(),
required_level: 5,
allowable_class: -1,
allowable_race: -1,
..Default::default()
},
);
s.set_item_template(
2418,
ItemTemplateView {
name: "Light Mail Gloves".into(),
required_level: 5,
allowable_class: -1,
allowable_race: -1,
..Default::default()
},
);
let req = |level| PlayerReqState {
level,
class_id: 1,
race_id: 1,
..Default::default()
};
s.set_player_req_state(req(4));
assert!(s
.eval::<bool>(
"local n, t, p, q, a, u = GetMerchantItemInfo(1)\nreturn u == nil and n ~= nil",
)
.unwrap());
assert!(s
.eval::<bool>(
"local n, t, p, q, a, u = GetBuybackItemInfo(1)\nreturn u == nil and n ~= nil",
)
.unwrap());
// Row 2 has no template pushed → still usable, whatever the player state.
assert!(s
.eval::<bool>("local n, t, p, q, a, u = GetMerchantItemInfo(2)\nreturn u == 1")
.unwrap());
// Levelling past the requirement whitens both.
s.set_player_req_state(req(5));
assert!(s
.eval::<bool>("local n, t, p, q, a, u = GetMerchantItemInfo(1)\nreturn u == 1")
.unwrap());
assert!(s
.eval::<bool>("local n, t, p, q, a, u = GetBuybackItemInfo(1)\nreturn u == 1")
.unwrap());
}
#[test]
fn merchant_stats_feed_reads_the_tooltip_head() {
let mut s = UiScript::new().unwrap();
let mut stock = stock();
// Row 1 becomes a sword so every stat column is distinguishable.
stock.items[0].stats = Some(ItemStatsHead {
quality: 2,
inventory_type: 21,
class: 2,
subclass: 7,
dmg_min: 5.0,
dmg_max: 9.0,
dmg_type: 2,
delay_ms: 2600,
armor: 0,
block: 0,
sell_price: 0,
});
s.set_merchant(Some(stock));
let (quality, inv, class, sub, dmin, dmax, dtype, delay, armor, block) = s
.eval::<(i64, i64, i64, i64, f64, f64, i64, i64, i64, i64)>(
"return BenillaGetMerchantItemStats(1)",
)
.unwrap();
assert_eq!((quality, inv, class, sub), (2, 21, 2, 7));
assert_eq!((dmin, dmax, dtype, delay), (5.0, 9.0, 2, 2600));
assert_eq!((armor, block), (0, 0));
// In flight (row 2) and out of range: nil.
assert!(s
.eval::<bool>("return BenillaGetMerchantItemStats(2) == nil")
.unwrap());
assert!(s
.eval::<bool>("return BenillaGetMerchantItemStats(9) == nil")
.unwrap());
}
#[test]
fn buy_merchant_item_queues_intents() {
let mut s = UiScript::new().unwrap();
s.set_merchant(Some(stock()));
s.run("BuyMerchantItem(1)").unwrap(); // default quantity 1
s.run("BuyMerchantItem(2, 5)").unwrap();
assert_eq!(s.take_merchant_buys(), vec![(1, 1), (2, 5)]);
assert!(s.take_merchant_buys().is_empty(), "drained");
}
#[test]
fn close_merchant_flags_the_intent() {
let mut s = UiScript::new().unwrap();
s.set_merchant(Some(stock()));
assert!(!s.take_merchant_close());
s.run("CloseMerchant()").unwrap();
assert!(s.take_merchant_close());
assert!(!s.take_merchant_close(), "drained");
}
/// The buyback surface: count, the ref tuple (including the 5875 binding's exact empty tuple
/// `(nil,nil,0,1,0,1)` for an invalid index — 0x4fb310), and the BuybackItem intent drain.
#[test]
fn buyback_reads_and_intents() {
let mut s = UiScript::new().unwrap();
assert_eq!(s.eval::<i64>("return GetNumBuybackItems()").unwrap(), 0);
assert!(s
.eval::<bool>(
"local n, t, p, q, a, u = GetBuybackItemInfo(1)\n\
return n == nil and t == nil and p == 0 and q == 1 and a == 0 and u == 1",
)
.unwrap());
let mut state = stock();
state.buyback = vec![MerchantItem {
name: Some("Worn Dagger".into()),
texture: Some("Interface\\Icons\\INV_Weapon_ShortBlade_01".into()),
price: 47,
quantity: 1,
stats: Some(ItemStatsHead {
quality: 1,
..Default::default()
}),
..Default::default()
}];
s.set_merchant(Some(state));
assert_eq!(s.eval::<i64>("return GetNumBuybackItems()").unwrap(), 1);
let (name, _tex, price): (String, String, i64) =
s.eval("return GetBuybackItemInfo(1)").unwrap();
assert_eq!((name.as_str(), price), ("Worn Dagger", 47));
assert!(s
.eval::<bool>("return BenillaGetBuybackItemStats(1) ~= nil")
.unwrap());
s.run("BuybackItem(1)").unwrap();
assert_eq!(s.take_merchant_buybacks(), vec![1]);
assert!(s.take_merchant_buybacks().is_empty(), "drained");
}
/// The repair surface: CanMerchantRepair off the snapshot, GetRepairAllCost's (cost, canRepair)
/// pair, the RepairAllItems intent, and the client-side repair-mode latch trio.
#[test]
fn repair_reads_intents_and_mode_latch() {
let mut s = UiScript::new().unwrap();
assert!(s.eval::<bool>("return CanMerchantRepair() == nil").unwrap());
let mut state = stock();
state.can_repair = true;
state.repair_all_cost = 1234;
s.set_merchant(Some(state));
assert!(s.eval::<bool>("return CanMerchantRepair() == 1").unwrap());
assert!(s
.eval::<bool>("local c, can = GetRepairAllCost()\nreturn c == 1234 and can == true",)
.unwrap());
s.run("RepairAllItems()").unwrap();
assert!(s.take_repair_all());
assert!(!s.take_repair_all(), "drained");
// ShowRepairCursor arms, InRepairMode reads (1/nil), HideRepairCursor disarms.
assert!(s.eval::<bool>("return InRepairMode() == nil").unwrap());
s.run("ShowRepairCursor()").unwrap();
assert!(s.repair_mode());
assert!(s.eval::<bool>("return InRepairMode() == 1").unwrap());
s.run("HideRepairCursor()").unwrap();
assert!(!s.repair_mode());
}
#[test]
fn clearing_the_merchant_empties_it() {
let mut s = UiScript::new().unwrap();
s.set_merchant(Some(stock()));
s.set_merchant(None);
assert_eq!(s.eval::<i64>("return GetMerchantNumItems()").unwrap(), 0);
assert!(s
.eval::<bool>("return GetMerchantItemInfo(1) == nil")
.unwrap());
}
/// The vendor-item hover cursor (`ShowMerchantSellCursor`/`ShowBuybackSellCursor`, `0x4fbab0`/
/// `0x4fbbb0`): Buy(3) when the player can afford the row, the grayed UnableBuy(23) when they
/// can't; `ShowInspectCursor` arms the magnifier; `ResetCursor` clears the whole override; an
/// unresolvable index (or no vendor open) leaves the cursor unchanged.
#[test]
fn vendor_hover_cursor_gates_on_affordability() {
use crate::script::UiCursorMode;
let mut s = UiScript::new().unwrap();
// No vendor open: the Show* calls resolve nothing and leave the cursor untouched.
s.run("ShowMerchantSellCursor(1)").unwrap();
assert_eq!(s.ui_cursor(), None);
let mut state = stock(); // row 1 price 25, row 2 price 1500
state.buyback = vec![MerchantItem {
price: 47,
..Default::default()
}];
s.set_merchant(Some(state));
s.set_money(100); // affords row 1 (25) + buyback (47), not row 2 (1500)
// Row 1: coin ≥ price → Buy(3).
s.run("ShowMerchantSellCursor(1)").unwrap();
assert_eq!(s.ui_cursor(), Some(UiCursorMode::Buy));
// Row 2: coin < price → the grayed UnableBuy(23).
s.run("ShowMerchantSellCursor(2)").unwrap();
assert_eq!(s.ui_cursor(), Some(UiCursorMode::UnableBuy));
// The Ctrl-hover magnifier, then ResetCursor back to the base mode.
s.run("ShowInspectCursor()").unwrap();
assert_eq!(s.ui_cursor(), Some(UiCursorMode::Inspect));
s.run("ResetCursor()").unwrap();
assert_eq!(s.ui_cursor(), None);
// Buyback affords too → Buy(3).
s.run("ShowBuybackSellCursor(1)").unwrap();
assert_eq!(s.ui_cursor(), Some(UiCursorMode::Buy));
// An out-of-range index bails without touching the armed cursor (the binary's no-CursorSetMode
// fail path) — the Buy from the buyback hover above survives.
s.run("ShowMerchantSellCursor(99)").unwrap();
assert_eq!(s.ui_cursor(), Some(UiCursorMode::Buy));
}
}