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Faction_Shared/Barrier.lua

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+local npcId = 400092
+local spellId1 = 100199
+local spellId2 = 100206
+local range = 8
+local killCreditNpcId = 400095
+
+function OnSpellCast(event, player, spell)
+    local spellEntry = spell:GetEntry()
+
+    if spellEntry == spellId1 or spellEntry == spellId2 then
+        nearestCreature = player:GetNearestCreature(range, npcId)
+        if nearestCreature == nil then
+            player:SendBroadcastMessage("You need to place the barrier in a more strategic location.")
+            spell:Cancel()
+        else
+            player:KilledMonsterCredit(killCreditNpcId)
+            player:SendBroadcastMessage("You have successfully built a barrier!")
+        end
+    end
+end
+
+RegisterPlayerEvent(5, OnSpellCast)