adding auto recast to keep fishing

conf/mod_autofish.conf.dist

@@ -8,3 +8,7 @@ AutoFish.ScanRange = 30.0
 AutoFish.BobberEntries = 35591
 # Automatically loot fish
 AutoFish.ServerAutoLoot = 1
+# Automatically Recast the fishing line
+AutoFish.AutoRecast = 1
+AutoFish.RecastDelayMs = 500
+AutoFish.RecastSpell = 131474

src/mod_autofish.cpp

@@ -9,15 +9,22 @@
 #include <vector>
 #include <list>
 #include <string>
+#include <unordered_map>
 
 namespace
 {
     bool sEnabled = true;
     bool sServerAutoLoot = true;
+    bool sAutoRecast = true;
     uint32 sTickMs = 200;
     float sScanRange = 30.0f;
+    uint32 sRecastDelayMs = 500;
+    uint32 sRecastSpell = 131474;
     std::vector<uint32> sBobberEntries;
 
+    struct GuidHash { std::size_t operator()(ObjectGuid const& g) const noexcept { return std::hash<uint64>()(g.GetRawValue()); } };
+    std::unordered_map<ObjectGuid, uint32, GuidHash> sRecastTimers;
+
     std::vector<uint32> ParseEntryList(std::string const& csv)
     {
         std::vector<uint32> out;
@@ -33,6 +40,32 @@ namespace
         return out;
     }
 
+    void ScheduleRecast(Player* plr)
+    {
+        if (!sAutoRecast || !plr || !plr->IsInWorld())
+            return;
+        sRecastTimers[plr->GetGUID()] = sRecastDelayMs;
+    }
+
+    void TickRecast(uint32 diff)
+    {
+        for (auto it = sRecastTimers.begin(); it != sRecastTimers.end();)
+        {
+            if (it->second > diff)
+            {
+                it->second -= diff;
+                ++it;
+            }
+            else
+            {
+                Player* plr = ObjectAccessor::FindPlayer(it->first);
+                if (plr && plr->IsInWorld() && plr->IsAlive() && !plr->IsInCombat())
+                    plr->CastSpell(plr, sRecastSpell, true);
+                it = sRecastTimers.erase(it);
+            }
+        }
+    }
+
     void TryAutoFish(Player* plr)
     {
         if (!plr || !plr->IsInWorld())
@@ -61,11 +94,11 @@ namespace
                         InventoryResult msg = EQUIP_ERR_OK;
                         plr->StoreLootItem(uint8(i), loot, msg);
                     }
-
                     plr->SendLootRelease(go->GetGUID());
                     go->SetLootState(GO_JUST_DEACTIVATED);
                 }
 
+                ScheduleRecast(plr);
                 return;
             }
         }
@@ -81,8 +114,11 @@ public:
     {
         sEnabled = sConfigMgr->GetOption<bool>("AutoFish.Enabled", true);
         sServerAutoLoot = sConfigMgr->GetOption<bool>("AutoFish.ServerAutoLoot", true);
+        sAutoRecast = sConfigMgr->GetOption<bool>("AutoFish.AutoRecast", true);
         sTickMs = sConfigMgr->GetOption<uint32>("AutoFish.TickMs", 200u);
         sScanRange = sConfigMgr->GetOption<float>("AutoFish.ScanRange", 30.0f);
+        sRecastDelayMs = sConfigMgr->GetOption<uint32>("AutoFish.RecastDelayMs", 500u);
+        sRecastSpell = sConfigMgr->GetOption<uint32>("AutoFish.RecastSpell", 131474u);
         sBobberEntries = ParseEntryList(sConfigMgr->GetOption<std::string>("AutoFish.BobberEntries", "35591"));
     }
 
@@ -93,10 +129,9 @@ public:
 
         static uint32 acc = 0;
         acc += diff;
-        if (acc < sTickMs)
+        if (acc >= sTickMs)
-            return;
+        {
             acc = 0;
-
             auto const& players = ObjectAccessor::GetPlayers();
             for (auto const& kv : players)
             {
@@ -106,6 +141,9 @@ public:
                 TryAutoFish(plr);
             }
         }
+
+        TickRecast(diff);
+    }
 };
 
 void AddSC_autofish_world()