rangecheck: rewrite of the 40y range check

* remove the bad notice in GUI
* set default interval to "2"
* prevent all frames of being updated at once
* refresh one unit after the other
* use textures insted of spellnames
* change interval settings to dropdown
* remove no longer required locales

api/api.lua

@@ -17,7 +17,8 @@ function pfUI.api.strsplit(delimiter, subject)
 end
 
 -- [ UnitInRange ]
--- Returns whether a party/raid member is nearby. It uses spells with a distance of around 40 yards.
+-- Returns whether a party/raid member is nearby.
+-- It takes care of the rangecheck module if existing.
 -- unit         [string]        A unit to query (string, unitID)
 -- return:      [bool]          "1" if in range otherwise "nil"
 local RangeCache = {}
@@ -28,32 +29,10 @@ function pfUI.api.UnitInRange(unit)
 
     if CheckInteractDistance(unit, 4) then
       return 1
-    else if not pfUI.rangecheck or not pfUI.rangecheck.slot then
-      return nil
+    else if pfUI.rangecheck then
+      return pfUI.rangecheck:UnitInSpellRange(unit)
     else
-      -- Extended Range Check
-      if not RangeCache[unit] or RangeCache[unit].time + pfUI.rangecheck.interval < GetTime() then
-        RangeCache[unit] = {}
-        RangeCache[unit].time  = GetTime()
-
-        if not UnitIsUnit("target", unit) then
-          pfScanActive = true
-          TargetUnit(unit)
-        end
-
-        if IsActionInRange(pfUI.rangecheck.slot) == 1 then
-          RangeCache[unit].range = 1
-        else
-          RangeCache[unit].range = nil
-        end
-
-        if pfScanActive then
-          TargetLastTarget()
-          pfScanActive = false
-        end
-      end
-
-      return RangeCache[unit].range
+      return nil
     end
   end
 end