feat: add spell traits

src/Spell/Spell.lua

@@ -49,12 +49,20 @@ end
 
 -- Constructor
 ---@param id number
+---@param traits? table
 ---@return Spell
-function Spell:New(id)
+function Spell:New(id, traits)
     local self = setmetatable({}, Spell)
 
     self.spellID = id
 
+    if traits == nil then traits = {} end
+    for k in pairs(traits) do
+        if self.traits[k] ~= nil and traits[k] ~= nil then
+            self.traits[k] = traits[k]
+        end
+    end
+
     return self
 end
 
@@ -334,7 +342,44 @@ function Spell:Castable()
         return self:GetCastableFunction()(self)
     end
 
-    return self:IsKnownAndUsable()
+    if not self:IsKnownAndUsable() then return false end
+
+    local player = Bastion.UnitManager:Get("player")
+
+    if self.traits.targeted then
+        local target = self:GetTarget()
+
+        if not target or
+            not target:Exists() then return false end
+
+        if not self:IsInRange(target) then return false end
+
+        if not self.traits.ignoreFacing then
+            if not player:IsFacing(target) then return false end
+        end
+
+        if not self.traits.ignoreLoS then
+            if not player:CanSee(target) then return false end
+        end
+    end
+
+    if not self.traits.ignoreCasting then
+        if player:IsCasting() then return false end
+    end
+
+    if not self.traits.ignoreChanneling then
+        if player:IsChanneling() then return false end
+    end
+
+    if not self.traits.ignoreGCD then
+        if player:GetGCD() > C_Spell.GetSpellQueueWindow() then return false end
+    end
+
+    if not self.traits.ignoreMoving then
+        if self:GetCastLength() > 0 and player:IsMoving() then return false end
+    end
+
+    return true
 end
 
 -- Set a script to check if the spell is castable

src/SpellBook/SpellBook.lua

@@ -15,10 +15,11 @@ end
 
 -- Get a spell from the spellbook
 ---@param id number
+---@param traits? table
 ---@return Spell
-function SpellBook:GetSpell(id)
+function SpellBook:GetSpell(id, traits)
     if self.spells[id] == nil then
-        self.spells[id] = Bastion.Spell:New(id)
+        self.spells[id] = Bastion.Spell:New(id, traits)
     end
 
     return self.spells[id]