Channel Cancel checks for Channeled AOE DPS Spells

Hello everyone,

I liked the channel cancel I did on mage recently, where they cancel blizzard if there is only 1 enemy left. I decided to do the same for the following classes:

Druid: Hurricane
Hunter: Volley
Priest: Mind Sear
Warlock: Rain of Fire

I moved the "ChannelCancel" action to it's own file, so other classes could benefit from it. I removed it from the mageactions.

src/strategy/actions/ActionContext.h

@@ -63,6 +63,7 @@
 #include "WorldBuffAction.h"
 #include "XpGainAction.h"
 #include "NewRpgAction.h"
+#include "CancelChannelAction.h"
 
 class PlayerbotAI;
 
@@ -189,6 +190,7 @@ public:
         creators["buy tabard"] = &ActionContext::buy_tabard;
         creators["guild manage nearby"] = &ActionContext::guild_manage_nearby;
         creators["clean quest log"] = &ActionContext::clean_quest_log;
+        creators["cancel channel"] = &ActionContext::cancel_channel;
 
         // BG Tactics
         creators["bg tactics"] = &ActionContext::bg_tactics;
@@ -298,6 +300,7 @@ private:
     static Action* arcane_torrent(PlayerbotAI* botAI) { return new CastArcaneTorrentAction(botAI); }
     static Action* mana_tap(PlayerbotAI* botAI) { return new CastManaTapAction(botAI); }
     static Action* end_pull(PlayerbotAI* botAI) { return new ChangeCombatStrategyAction(botAI, "-pull"); }
+    static Action* cancel_channel(PlayerbotAI* botAI) { return new CancelChannelAction(botAI); }
 
     static Action* emote(PlayerbotAI* botAI) { return new EmoteAction(botAI); }
     static Action* talk(PlayerbotAI* botAI) { return new TalkAction(botAI); }

src/strategy/actions/CancelChannelAction.cpp

@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it
+ * and/or modify it under version 2 of the License, or (at your option), any later version.
+ */
+
+#include "CancelChannelAction.h"
+#include "Player.h"
+#include "PlayerbotAI.h"
+
+bool CancelChannelAction::Execute(Event event)
+{
+    if (bot->GetCurrentSpell(CURRENT_CHANNELED_SPELL))
+    {
+        bot->InterruptSpell(CURRENT_CHANNELED_SPELL);
+        return true;
+    }
+    return false;
+}

src/strategy/actions/CancelChannelAction.h

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it
+ * and/or modify it under version 2 of the License, or (at your option), any later version.
+ */
+
+#ifndef _PLAYERBOT_CANCELCHANNELACTION_H
+#define _PLAYERBOT_CANCELCHANNELACTION_H
+
+#include "Action.h"
+
+class PlayerbotAI;
+
+class CancelChannelAction : public Action
+{
+public:
+    CancelChannelAction(PlayerbotAI* botAI) : Action(botAI, "cancel channel") {}
+
+    bool Execute(Event event) override;
+};
+
+#endif