Allow size and range check features to be configured.

This also improves the range check to fall back to UnitInRange if no
friendly spell is available

src/frames.lua

@@ -16,6 +16,20 @@
 -- Omicron Frames. If not, see <https://www.gnu.org/licenses/>. 
 local omif = select(2, ...)
 
+local function RangeConfig()
+    local _, class = UnitClass("player")
+    if class == "SHAMAN" then
+        return {
+            friendly = "Healing Surge",
+            enemy = "Lightning Bolt",
+            fade = 0.2
+        }
+    else
+        return {
+            fade = 0.2
+        }
+    end
+end
 
 local types = omif.GetModule("types")
 local UnitFrame = types.UnitFrame
@@ -40,43 +54,59 @@ function HideBlizzardFrames()
     toggleFrame:Hide()
 end
 
-function CreateRaidFrames(left, top, width, height)
+function CreateRaidFrames(left, top, config)
+    local width = config.size.width
+    local height = config.size.height
     local group = UnitGroup:new(left, top, width, height)
     for i=0,5 do
         for j=0,4 do
             local num = i*5 + j + 1
-            local frame = UnitFrame:new("raid" .. num, width, height)
+            local frame = UnitFrame:new("raid" .. num, config)
             group:AddUnitFrame(frame)
         end
     end
 end
 
-function CreatePartyFrames(left, top, width, height)
+function CreatePartyFrames(left, top, config)
+    local width = config.size.width
+    local height = config.size.height
     local group = UnitGroup:new(left, top, width, height)
-    local player = UnitFrame:new("player", width, height, true)
+    local player = UnitFrame:new("player", config)
     group:AddUnitFrame(player)
     for i=1,4 do
-        local frame = UnitFrame:new("party" .. i, width, height, true)
+        local frame = UnitFrame:new("party" .. i, config)
         group:AddUnitFrame(frame)
     end
     group:Sort()
 end
 
-function CreateTargetFrames(left, top, width, height)
-    local focus = UnitFrame:new("focus", width, height)
+function CreateTargetFrames(left, top, config)
+    local width = config.size.width
+    local height = config.size.height
+    local focus = UnitFrame:new("focus", config)
     focus:SetPosition(left, top)
-    local target = UnitFrame:new("target", width, height)
+    local target = UnitFrame:new("target", config)
     target:SetPosition(left, top - height)
     for i=1,4 do
-        local boss = UnitFrame:new("boss" .. i, width, height)
+        local boss = UnitFrame:new("boss" .. i, config)
         boss:SetPosition(left, top-(i+1)*height)
     end
 end
 
 function CreateFrames()
-    CreatePartyFrames(0, -290, 110, 45)
-    CreateRaidFrames(0, -290, 110, 45)
-    CreateTargetFrames(110*3+50, -245, 110, 45)
+    config = {
+        size = {
+            width = 110,
+            height = 45,
+        },
+        range = RangeConfig(),
+        hideInRaid = true,
+    }
+
+    CreatePartyFrames(0, -290, config)
+    config.hideInRaid = false
+    CreateRaidFrames(0, -290, config)
+    CreateTargetFrames(110*3+50, -245, config)
     HideBlizzardFrames()
 end
 omif.SetEventHandler("OMICRON_LOADING", CreateFrames)