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Core.point_conditions.pointIdentity

相依項目

呼叫方式

Core.point_conditions.pointIdentity(self, unit, key)

記錄相依項目 Core.point_conditions.pointIdentity,然後以該名稱呼叫。含命名空間的呼叫不會傳入 self:請使用冒號呼叫,或自行傳入該物件。

作用

Observes whether unit exists and, if so, its class, for the point-resource selectors. For the player it reuses a class stored in self.longtermCache under key when it was recorded against the same UnitClass function, and otherwise stores the freshly read class there.

參數

名稱類型作用
selfRMAddonRotation Master addon instance.
unitstringUnit token to observe.
keyanyLong-term cache key for the player's class; only used for "player". The addon passes a private table.

傳回值

1table | nil{exists=false}, or {exists=true, class=token}; nil when unavailable.
2string | nilThe platform observer's reason for nil.

版本

內建輔助函式在每個版本上都會註冊。不同的是它們讀取的遊戲 API;某個 API 不存在時,輔助函式會改用備用方式,或傳回 nil 並附上原因。

  • 該版本無法使用(原因請見提示)
  • 僅在暴雪的棄用相容層開啟時
遊戲 API經典時代TBC 週年版經典進程永久正式版
UnitClass經典時代TBC 週年版經典進程永久正式版

機密值(正式版與永久)

在正式版與永久上,遊戲交給插件的是機密值。此輔助函式會檢查它讀取的內容(addon.Platform:CanReadValue),遇到無法比較的機密值時,會傳回 nil 並附上原因(例如 restricted-value),而不是傳回該機密值。請將 nil 視為無法使用,而非假。

範例

-- needs the dependency Core.point_conditions.pointIdentity
local record, reason = Functions.cache.getCached(cache, Core.point_conditions.pointIdentity, addon, "target")
if not record then return nil, reason end
return record.exists and record.class == "ROGUE"

原始碼

Core/point_conditions.lua,第 27 行。在遊戲中為唯讀;「複製」會產生一份可編輯的複本。

Core.point_conditions.pointIdentity(self, unit, key)
    local platform=self.Platform
    local nativeClass=UnitClass
    local longterm=self.longtermCache
    if not platform:CanReadValue(longterm) or type(longterm)~='table' then longterm=nil end
    local class
    if unit=='player' and longterm and platform:CanReadValue(nativeClass) and type(nativeClass)=='function' then
        local entry=rawget(longterm,key)
        if platform:CanReadValue(entry) and type(entry)=='table' then
            local api,candidate=rawget(entry,'api'),rawget(entry,'class')
            if platform:CanReadValue(api) and api==nativeClass and platform:CanReadValue(candidate) and type(candidate)=='string' and candidate~='' then class=candidate end
        end
    end
    local record,reason=platform:GetUnitPointIdentityObservation(unit,class==nil)
    if not record then return nil,reason end
    if not record.exists then return record end
    if class then record.class=class
    elseif unit=='player' and longterm and type(nativeClass)=='function' and nativeClass==UnitClass then
        rawset(longterm,key,{api=nativeClass,class=record.class})
    end
    return record

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