raid-healing-predictions: option to show healing predictions

ShaguTweaks-extras.toc

@@ -39,6 +39,7 @@ mods\raid-group-header.lua
 mods\raid-combat-feedback.lua
 mods\raid-dispel-indicators.lua
 mods\raid-aggro-indicator.lua
+mods\raid-healing-predictions.lua
 mods\raid-hide-party.lua
 
 # reduced actionbar size

mods/raid-healing-predictions.lua

@@ -0,0 +1,57 @@
+local _G = ShaguTweaks.GetGlobalEnv()
+local T = ShaguTweaks.T
+
+local module = ShaguTweaks:register({
+  title = T["Show Healing Predictions"],
+  description = T["Show healing predictions that are received in a healcomm compatible protocol."],
+  expansions = { ["vanilla"] = true, ["tbc"] = false },
+  category = T["Raid Frames"],
+  maintainer = "@shagu (GitHub)",
+  enabled = nil,
+})
+
+module.enable = function(self)
+  ShaguTweaks.UnitFrame_NewComponent('healing predictions', {
+    events = { },
+
+    create = function(frame)
+      -- create green prediction healthbar
+      frame.predict = frame.bar:CreateTexture(nil, "BORDER")
+      frame.predict:SetTexture("Interface\\TargetingFrame\\UI-StatusBar")
+      frame.predict:SetVertexColor(0, 1, 0, 1)
+      frame.predict:SetPoint("TOPLEFT", frame.bar, "TOPLEFT", 0, 0)
+      frame.predict:SetPoint("BOTTOMLEFT", frame.bar, "BOTTOMLEFT", 0, 0)
+    end,
+
+    update = function(frame, event)
+      -- read predictions
+      local heal = ShaguTweaks.libpredict:UnitGetIncomingHeals(frame.unitstr)
+      local res = ShaguTweaks.libpredict:UnitHasIncomingResurrection(frame.unitstr)
+
+      -- update bar size if required
+      if heal ~= this.predict_lastval then
+        if heal and heal > 0 then
+          local health, maxHealth = UnitHealth(frame.unitstr), UnitHealthMax(frame.unitstr)
+          local healthWidth = 62 * health / maxHealth
+          local incWidth = 62 * heal / maxHealth
+          local width = math.min(62, healthWidth + incWidth)
+          frame.predict:SetWidth(width)
+        else
+          frame.predict:SetWidth(-1)
+        end
+
+        this.predict_lastval = heal
+      end
+
+      -- update healing state
+      if heal and heal > 0 then
+        frame.info = "|cff22ff22+" .. heal .. "|r"
+      end
+
+      -- update resurrection state
+      if res then
+        frame.info = "|cffffff55Resurrecting"
+      end
+    end
+  })
+end