From 3db0f569b9021ea816cecf46ae2b905a30c662c3 Mon Sep 17 00:00:00 2001
From: shagu <ericmauser@googlemail.com>
Date: Sat, 10 Nov 2018 13:34:28 +0100
Subject: [PATCH] libcast: correct channel delay calculation

---
 libs/libcast.lua | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libs/libcast.lua b/libs/libcast.lua
index 4666ba22..fb941d35 100644
--- a/libs/libcast.lua
+++ b/libs/libcast.lua
@@ -214,7 +214,9 @@ libcast:SetScript("OnEvent", function()
       this.db[player].channel = nil
     end
   elseif event == "SPELLCAST_CHANNEL_UPDATE" then
-    this.db[player].start = this.db[player].start - arg1 / 1000
+    if this.db[player].cast then
+      this.db[player].start = -this.db[player].casttime/1000 + GetTime() + arg1/1000
+    end
   -- Fill database with environmental casts
   elseif arg1 then
     -- (.+) begins to cast (.+).