Rewrote spellbook swap

Corrected spellbook swap spell selection timeout

Server/src/main/content/global/handlers/iface/AutocastSelectPlugin.java

@@ -30,6 +30,17 @@ public final class AutocastSelectPlugin extends ComponentPlugin {
 		if (!player.getAttribute("autocast_select", false)) {
 			return true;
 		}
+	    if (player.timers.getTimer("spellbook:swap") != null) {
+		player.getPacketDispatch().sendMessage("You cannot autocast while using Spellbook Swap.");
+		player.removeAttribute("autocast_select");
+		player.removeAttribute("autocast_component");
+		final WeaponInterface w = player.getExtension(WeaponInterface.class);
+		if (w != null) {
+		    w.setAttackStyle(3);
+		    player.getInterfaceManager().openTab(w);
+		}
+		return true;
+	    }
 		player.removeAttribute("autocast_select");
 		final WeaponInterface w = player.getExtension(WeaponInterface.class);
 		if (w != null) {

Server/src/main/content/global/skill/magic/MagicAltarListener.kt

@@ -1,15 +1,23 @@
 package content.global.skill.magic
 
-import core.api.*
+import content.data.Quests
+import core.api.animate
+import core.api.hasLevelStat
+import core.api.hasRequirement
+import core.api.lock
+import core.api.playAudio
+import core.api.sendMessage
+import core.game.event.SpellbookChangeEvent
 import core.game.interaction.IntType
 import core.game.interaction.InteractionListener
 import core.game.node.Node
+import core.game.node.entity.combat.equipment.WeaponInterface
 import core.game.node.entity.player.Player
+import core.game.node.entity.player.link.SpellBookManager
 import core.game.node.entity.player.link.SpellBookManager.SpellBook
 import core.game.node.entity.skill.Skills
 import org.rs09.consts.Scenery
 import org.rs09.consts.Sounds
-import content.data.Quests
 
 class MagicAltarListener : InteractionListener {
     override fun defineListeners() {
@@ -41,16 +49,26 @@ class MagicAltarListener : InteractionListener {
 		lock(player, 3)
 		playAudio(player, Sounds.PRAYER_RECHARGE_2674)
 		animate(player, 645)
-
 		if (altar.id == ANCIENT_ALTAR) {
 			player.skills.decrementPrayerPoints(player.skills.prayerPoints)
 		}
-
+		val weaponInterface = player.getExtension<WeaponInterface>(WeaponInterface::class.java)
+		if (weaponInterface != null && player.properties.autocastSpell != null) {
+			weaponInterface.selectAutoSpell(-1, true)
+		}
 		if (SpellBook.forInterface(player.spellBookManager.spellBook) == if (altar.id == ANCIENT_ALTAR) SpellBook.ANCIENT else SpellBook.LUNAR) {
+			player.dispatch(SpellbookChangeEvent(
+				SpellBook.forInterface(player.spellBookManager.spellBook),
+				SpellBook.MODERN,
+				SpellBookManager.SpellbookChangeSource.ALTAR))
 			sendMessage(player, if (altar.id == ANCIENT_ALTAR) "You feel a strange drain upon your memory..." else "Modern spells activated!")
 			player.spellBookManager.setSpellBook(SpellBook.MODERN)
 			player.spellBookManager.update(player)
 		} else {
+			player.dispatch(SpellbookChangeEvent(
+				SpellBook.forInterface(player.spellBookManager.spellBook),
+				if (altar.id == ANCIENT_ALTAR) SpellBook.ANCIENT else SpellBook.LUNAR,
+				SpellBookManager.SpellbookChangeSource.ALTAR))
 			sendMessage(player, if (altar.id == ANCIENT_ALTAR) "You feel a strange wisdom fill your mind..." else "Lunar spells activated!")
 			player.spellBookManager.setSpellBook(if (altar.id == ANCIENT_ALTAR) SpellBook.ANCIENT else SpellBook.LUNAR)
 			player.spellBookManager.update(player)

Server/src/main/content/global/skill/magic/SpellUtils.kt

@@ -1,13 +1,25 @@
 package content.global.skill.magic
 
-import core.game.node.entity.npc.NPC
-import core.game.node.entity.player.Player
 import core.game.node.entity.combat.spell.CombinationRune
 import core.game.node.entity.combat.spell.MagicStaff
 import core.game.node.entity.combat.spell.Runes
+import core.game.node.entity.npc.NPC
+import core.game.node.entity.player.Player
 import core.game.node.item.Item
 
 object SpellUtils {
+    /**
+     * Validates that the spell packet's interface matches the player's actual server-side spellbook.
+     * This prevents exploits where the client has a stale spellbook interface (e.g., after Spellbook Swap reverts).
+     * @param player The player casting the spell
+     * @param packetInterfaceId The interface ID from the client's spell packet
+     * @return true if the interfaces match (valid), false if there's a client/server desync
+     */
+    @JvmStatic
+    fun validateSpellbookInterface(player : Player, packetInterfaceId : Int) : Boolean {
+	val actualSpellbook = player.spellBookManager.spellBook
+	return packetInterfaceId == actualSpellbook
+    }
     fun usingStaff(p: Player, rune: Int): Boolean {
         val weapon = p.equipment[3] ?: return false
         val staff = MagicStaff.forId(rune) ?: return false

Server/src/main/content/global/skill/magic/SpellbookSwapDialogue.java

@@ -1,10 +1,21 @@
 package content.global.skill.magic;
 
+import content.data.Quests;
 import core.game.component.Component;
 import core.game.dialogue.DialoguePlugin;
+import core.game.event.SpellbookChangeEvent;
+import core.game.interaction.Listener;
 import core.game.node.entity.player.Player;
-import core.plugin.Initializable;
 import core.game.node.entity.player.link.SpellBookManager.SpellBook;
+import core.game.node.entity.player.link.SpellBookManager.SpellbookChangeSource;
+import core.game.node.entity.skill.Skills;
+import core.game.node.item.Item;
+import core.plugin.Initializable;
+
+import java.util.ArrayList;
+
+import static core.api.ContentAPIKt.hasRequirement;
+
 
 /**
  * Handles the SpellbookSwapDialogue dialogue.
@@ -73,8 +84,27 @@ public class SpellbookSwapDialogue extends DialoguePlugin {
 				break;
 			}
 			final SpellBook book = type == 1 ? SpellBook.ANCIENT : SpellBook.MODERN;
+		    if (book == SpellBook.ANCIENT && !hasRequirement(player, Quests.DESERT_TREASURE)) {
+			player.getPacketDispatch().sendMessage("You need to complete Desert Treasure to use Ancient Magicks.");
+			end();
+			return true;
+		    }
+			// Remove runes for Spellbook Swap
+			ArrayList<Item> runes = player.getAttribute("spell:runes", new ArrayList<>());
+			if (!runes.isEmpty() && player.getInventory().remove(runes.toArray(new Item[0]))) {
+				player.removeAttribute("spell:runes");
+				player.removeAttribute("tablet-spell");
+			}
+			// Award XP
+			player.skills.addExperience(Skills.MAGIC, 130);
+			// Change book
+			player.dispatch(new SpellbookChangeEvent(
+					SpellBook.LUNAR,
+					book,
+					SpellbookChangeSource.SPELLBOOK_SWAP_CAST));
 			player.getSpellBookManager().setSpellBook(book);
 			player.getInterfaceManager().openTab(new Component(book.getInterfaceId()));
+		    player.getPacketDispatch().sendMessage("You have 2 minutes before your spellbook changes back to the Lunar Spellbook!");
 			end();
 			break;
 		}

Server/src/main/content/global/skill/magic/ancient/AncientTeleportPlugin.java

@@ -1,14 +1,15 @@
 package content.global.skill.magic.ancient;
 
-import core.game.node.entity.player.Player;
+import core.game.event.SpellCastEvent;
-import core.game.node.entity.player.link.diary.DiaryType;
-import core.game.node.entity.combat.spell.MagicSpell;
-import core.game.node.entity.combat.spell.Runes;
 import core.game.node.Node;
 import core.game.node.entity.Entity;
+import core.game.node.entity.combat.spell.MagicSpell;
+import core.game.node.entity.combat.spell.Runes;
 import core.game.node.entity.combat.spell.SpellType;
+import core.game.node.entity.player.Player;
 import core.game.node.entity.player.link.SpellBookManager.SpellBook;
 import core.game.node.entity.player.link.TeleportManager.TeleportType;
+import core.game.node.entity.player.link.diary.DiaryType;
 import core.game.node.item.Item;
 import core.game.world.GameWorld;
 import core.game.world.map.Location;
@@ -67,6 +68,7 @@ public final class AncientTeleportPlugin extends MagicSpell {
 				return false;
 			}
 			homeTeleport((Player) entity, Location.create(3087, 3495, 0));
+		    entity.dispatch(new SpellCastEvent(SpellBook.ANCIENT, getSpellId(), target));
 		} else if (entity.getTeleporter().send(location.transform(0, RandomFunction.random(3), 0), TeleportType.ANCIENT)) {
 			if (!super.meetsRequirements(entity, true, true)) {
 				entity.getTeleporter().getCurrentTeleport().stop();

Server/src/main/content/global/skill/magic/lunar/LunarListeners.kt

@@ -24,12 +24,17 @@ import core.game.system.config.NPCConfigParser
 import core.game.system.task.Pulse
 import core.game.system.timer.impl.PoisonImmunity
 import core.game.system.timer.impl.SkillRestore
+import core.game.system.timer.impl.SpellbookSwap
 import core.game.world.map.Location
 import core.game.world.map.RegionManager
 import core.game.world.repository.Repository
 import core.game.world.update.flag.context.Animation
 import core.tools.RandomFunction
-import org.rs09.consts.*
+import org.rs09.consts.Animations
+import org.rs09.consts.Components
+import org.rs09.consts.Graphics
+import org.rs09.consts.Items
+import org.rs09.consts.Sounds
 import kotlin.math.floor
 
 class LunarListeners : SpellListener("lunar"), Commands {
@@ -280,9 +285,14 @@ class LunarListeners : SpellListener("lunar"), Commands {
          */
 
         // Level 96
-        /**
+        onCast(Lunar.SPELLBOOK_SWAP, NONE) { player, _ ->
-         * Spellbook Swap
+            requires(player, 96, arrayOf(
-         */
+                Item(Items.LAW_RUNE_563, 1),
+                Item(Items.COSMIC_RUNE_564, 2),
+                Item(Items.ASTRAL_RUNE_9075, 3)
+            ))
+            spellbookSwap(player)
+        }
     }
 
     // Spell handlers
@@ -785,9 +795,18 @@ class LunarListeners : SpellListener("lunar"), Commands {
      */
 	
 	// Level 96
-    /**
+	private fun spellbookSwap(player : Player) {
-     * Spellbook Swap
+		// Runes are removed on successful swap to another spellbook in SpellbookSwapDialogue.java
-     */
+		// removeRunes(player, true)
+		lock(player, 4)
+		visualizeSpell(player, 6299, 1062)
+		player.scripts.removeWeakScripts()
+		player.dialogueInterpreter.open(3264731)
+		registerTimer(player, SpellbookSwap())
+		// XP is awarded in SpellbookSwapDialogue.java similarly to rune removal handling
+		// addXP(player, 130.0)
+		setDelay(player, false)
+	}
 
     // Other/Multi spell use-case
     private fun sendTeleport(player: Player, xp: Double, loc: Location){

Server/src/main/content/global/skill/magic/lunar/SpellbookSwapSpell.java

@@ -1,84 +0,0 @@
-package content.global.skill.magic.lunar;
-
-import core.game.component.Component;
-import core.game.node.entity.combat.spell.MagicSpell;
-import core.game.node.entity.combat.spell.Runes;
-import core.game.node.Node;
-import core.game.node.entity.Entity;
-import core.game.node.entity.combat.spell.SpellType;
-import core.game.node.entity.player.Player;
-import core.game.node.entity.player.link.SpellBookManager.SpellBook;
-import core.game.node.item.Item;
-import core.game.system.task.Pulse;
-import core.game.world.GameWorld;
-import core.game.world.update.flag.context.Animation;
-import core.game.world.update.flag.context.Graphics;
-import core.plugin.Initializable;
-import core.plugin.Plugin;
-import core.tools.RandomFunction;
-
-/**
- * The spellbook swap spell.
- * @author 'Vexia
- */
-@Initializable
-public class SpellbookSwapSpell extends MagicSpell {
-
-	/**
-	 * Represents the animation of this spell.
-	 */
-	private final Animation ANIMATION = new Animation(6299);
-
-	/**
-	 * Represents the graphics of this spell.
-	 */
-	private final Graphics GRAPHIC = new Graphics(1062);
-
-	/**
-	 * Constructs a new {@code SpellbookSwapSpell} {@code Object}.
-	 */
-	public SpellbookSwapSpell() {
-		super(SpellBook.LUNAR, 96, 130, null, null, null, new Item[] { new Item(Runes.LAW_RUNE.getId(), 1), new Item(Runes.COSMIC_RUNE.getId(), 2), new Item(Runes.ASTRAL_RUNE.getId(), 3) });
-	}
-
-	@Override
-	public Plugin<SpellType> newInstance(SpellType arg) throws Throwable {
-		SpellBook.LUNAR.register(12, this);
-		return this;
-	}
-
-	@Override
-	public boolean cast(Entity entity, Node target) {
-		final Player player = (Player) entity;
-		if (!super.meetsRequirements(player, true, true)) {
-			return false;
-		}
-		player.lock(9);
-		player.animate(ANIMATION);
-		player.graphics(GRAPHIC);
-		player.getDialogueInterpreter().open(3264731);
-		final int id = RandomFunction.random(1, 500000);
-		player.setAttribute("spell:swap", id);
-		GameWorld.getPulser().submit(new Pulse(20, player) {
-			@Override
-			public boolean pulse() {
-				if (player.getAttribute("spell:swap", 0) == id) {
-					removeTemporarySpell(player);
-				}
-				return true;
-			}
-
-		});
-		return true;
-	}
-
-	/**
-	 * Method used to remove the temp spell swap.
-	 * @param player the player.
-	 */
-	public static void removeTemporarySpell(final Player player) {
-		player.removeAttribute("spell:swap");
-		player.getSpellBookManager().setSpellBook(SpellBook.LUNAR);
-		player.getInterfaceManager().openTab(new Component(SpellBook.LUNAR.getInterfaceId()));
-	}
-}

Server/src/main/content/global/skill/skillcapeperks/SkillcapePerks.kt

@@ -1,23 +1,29 @@
 package content.global.skill.skillcapeperks
 
-import core.game.component.Component
+import content.data.Quests
-import core.game.node.entity.player.Player
+import content.global.skill.farming.PatchType
-import core.game.node.entity.player.link.SpellBookManager
+import content.global.skill.farming.Plantable
-import core.game.node.entity.player.link.TeleportManager
 import content.global.skill.runecrafting.Altar
-import core.game.world.map.Location
-import core.game.world.map.zone.impl.DarkZone
-import core.plugin.Initializable
-import core.game.world.GameWorld
-import content.global.skill.farming.*
 import core.ServerStore
 import core.ServerStore.Companion.getBoolean
 import core.ServerStore.Companion.getInt
-import core.api.*
+import core.api.closeDialogue
+import core.api.getAttribute
+import core.api.hasRequirement
+import core.api.sendDialogue
+import core.api.sendMessage
+import core.api.teleport
 import core.cache.def.impl.ItemDefinition
-import core.tools.END_DIALOGUE
+import core.game.component.Component
-import org.rs09.consts.Items
+import core.game.event.SpellbookChangeEvent
-import content.data.Quests
+import core.game.node.entity.combat.equipment.WeaponInterface
+import core.game.node.entity.player.Player
+import core.game.node.entity.player.link.SpellBookManager
+import core.game.node.entity.player.link.TeleportManager
+import core.game.world.GameWorld
+import core.game.world.map.Location
+import core.game.world.map.zone.impl.DarkZone
+import core.plugin.Initializable
 
 enum class SkillcapePerks(val attribute: String, val effect: ((Player) -> Unit)? = null) {
     BAREFISTED_SMITHING("cape_perks:barefisted-smithing"),
@@ -203,13 +209,18 @@ enum class SkillcapePerks(val attribute: String, val effect: ((Player) -> Unit)?
 	    end()
 	    if (spellbook != null) {
 		if (spellbook == SpellBookManager.SpellBook.ANCIENT) {
-                    if (!hasRequirement(player, Quests.DESERT_TREASURE))
+		    if (!hasRequirement(player, Quests.DESERT_TREASURE)) return true
-                        return true
+		} else if (spellbook == SpellBookManager.SpellBook.LUNAR) {
+		    if (!hasRequirement(player, Quests.LUNAR_DIPLOMACY)) return true
 		}
-                else if (spellbook == SpellBookManager.SpellBook.LUNAR) {
+		val weaponInterface = player.getExtension<WeaponInterface>(WeaponInterface::class.java)
-                    if (!hasRequirement(player, Quests.LUNAR_DIPLOMACY))
+		if (weaponInterface != null && player.properties.autocastSpell != null) {
-                        return true
+		    weaponInterface.selectAutoSpell(-1, true)
 		}
+		player.dispatch(SpellbookChangeEvent(
+			SpellBookManager.SpellBook.forInterface(player.spellBookManager.spellBook),
+			spellbook,
+			SpellBookManager.SpellbookChangeSource.MAGIC_CAPE_PERK))
 		player.spellBookManager.setSpellBook(spellbook)
 		player.interfaceManager.openTab(Component(spellbook.interfaceId))
 		player.incrementAttribute("/save:cape_perks:librarian-magus-charges", -1)
@@ -220,7 +231,6 @@ enum class SkillcapePerks(val attribute: String, val effect: ((Player) -> Unit)?
 	override fun getIds() : IntArray {
 	    return intArrayOf(509871234)
 	}
-
     }
 
     @Initializable

Server/src/main/core/api/Event.kt

@@ -23,6 +23,7 @@ object Event {
     @JvmStatic val AttributeSet = AttributeSetEvent::class.java
     @JvmStatic val AttributeRemoved = AttributeRemoveEvent::class.java
     @JvmStatic val SpellCast = SpellCastEvent::class.java
+    @JvmStatic val SpellbookChanged = SpellbookChangeEvent::class.java
     @JvmStatic val ItemAlchemized = ItemAlchemizationEvent::class.java
     @JvmStatic val ItemEquipped = ItemEquipEvent::class.java
     @JvmStatic val ItemUnequipped = ItemUnequipEvent::class.java

Server/src/main/core/game/event/Events.kt

@@ -6,6 +6,7 @@ import core.game.node.Node
 import core.game.node.entity.Entity
 import core.game.node.entity.npc.NPC
 import core.game.node.entity.player.link.SpellBookManager.SpellBook
+import core.game.node.entity.player.link.SpellBookManager.SpellbookChangeSource
 import core.game.node.entity.player.link.TeleportManager.TeleportType
 import core.game.node.entity.player.link.prayer.PrayerType
 import core.game.node.item.Item
@@ -34,6 +35,7 @@ data class InterfaceCloseEvent(val component: Component) : Event
 data class AttributeSetEvent(val entity: Entity, val attribute: String, val value: Any) : Event
 data class AttributeRemoveEvent(val entity: Entity, val attribute: String) : Event
 data class SpellCastEvent(val spellBook: SpellBook, val spellId: Int, val target: Node? = null) : Event
+data class SpellbookChangeEvent(val oldSpellBook: SpellBook, val newSpellBook: SpellBook, val source: SpellbookChangeSource) : Event
 data class ItemAlchemizationEvent(val itemId: Int, val isHigh: Boolean) : Event
 data class ItemEquipEvent(val itemId: Int, val slotId: Int) : Event
 data class ItemUnequipEvent(val itemId: Int, val slotId: Int) : Event

Server/src/main/core/game/node/entity/combat/spell/MagicSpell.java

@@ -1,8 +1,6 @@
 package core.game.node.entity.combat.spell;
 
-import core.game.component.Component;
 import core.game.event.SpellCastEvent;
-import core.game.node.entity.skill.Skills;
 import core.game.node.Node;
 import core.game.node.entity.Entity;
 import core.game.node.entity.combat.CombatSwingHandler;
@@ -10,6 +8,7 @@ import core.game.node.entity.combat.equipment.WeaponInterface;
 import core.game.node.entity.player.Player;
 import core.game.node.entity.player.link.SpellBookManager.SpellBook;
 import core.game.node.entity.player.link.audio.Audio;
+import core.game.node.entity.skill.Skills;
 import core.game.node.item.Item;
 import core.game.world.GameWorld;
 import core.game.world.update.flag.context.Animation;
@@ -121,11 +120,6 @@ public abstract class MagicSpell implements Plugin<SpellType> {
 			p.faceTemporary((Entity) target, 1);
 		}
 		if (spell.cast(p, target)) {
-			if (book != SpellBook.LUNAR && p.getAttribute("spell:swap", 0) != 0) {
-				p.removeAttribute("spell:swap");
-				p.getSpellBookManager().setSpellBook(SpellBook.LUNAR);
-				p.getInterfaceManager().openTab(new Component(SpellBook.LUNAR.getInterfaceId()));
-			}
 			if (!combatSpell) {
 				p.getSkills().addExperience(Skills.MAGIC, spell.getExperience(p), true);
 			}

Server/src/main/core/game/node/entity/player/link/SpellBookManager.java

@@ -55,6 +55,16 @@ public final class SpellBookManager {
 		return spellBook;
 	}
 
+	/**
+	 * All the possible ways a SpellBook can get changed.
+	 */
+	public enum SpellbookChangeSource {
+		ALTAR,
+		MAGIC_CAPE_PERK,
+		SPELLBOOK_SWAP_CAST,
+		SPELLBOOK_SWAP_RESTORE
+	}
+
 	/**
 	 * Represents a characters spell book.
 	 * @author 'Vexia
@@ -134,5 +144,4 @@ public final class SpellBookManager {
 			return spells.get(buttonId);
 		}
 	}
-
 }

Server/src/main/core/game/system/timer/impl/SpellbookSwap.kt

@@ -0,0 +1,99 @@
+package core.game.system.timer.impl
+
+import core.api.Event.DialogueClosed
+import core.api.Event.SpellCast
+import core.api.Event.SpellbookChanged
+import core.api.clearLogoutListener
+import core.api.registerLogoutListener
+import core.api.removeTimer
+import core.game.event.*
+import core.game.node.entity.Entity
+import core.game.node.entity.combat.equipment.WeaponInterface
+import core.game.node.entity.player.Player
+import core.game.node.entity.player.link.SpellBookManager.SpellBook
+import core.game.node.entity.player.link.SpellBookManager.SpellbookChangeSource
+import core.game.system.timer.PersistTimer
+import core.tools.minutesToTicks
+
+/**
+ * A timer dedicated to the handling of the Lunar spell Spellbook Swap.
+ */
+class SpellbookSwap : PersistTimer(runInterval = minutesToTicks(2), identifier = "spellbook:swap") {
+	
+	private val spellCastHook = object : EventHook<SpellCastEvent> {
+		override fun process(entity : Entity, event : SpellCastEvent) {
+			if (event.spellBook == SpellBook.LUNAR && event.spellId == 12) return  // Ignore spellbook swap itself
+			revertSpellbook(entity)
+			removeTimer<SpellbookSwap>(entity)
+		}
+	}
+	
+	private val spellBookChangeHook = object : EventHook<SpellbookChangeEvent> {
+		override fun process(entity : Entity, event : SpellbookChangeEvent) {
+			if (event.source != SpellbookChangeSource.SPELLBOOK_SWAP_CAST
+					&& event.source != SpellbookChangeSource.SPELLBOOK_SWAP_RESTORE) {
+				removeTimer<SpellbookSwap>(entity)
+			}
+		}
+	}
+	
+	private val dialogueCloseHook = object : EventHook<DialogueCloseEvent> {
+		override fun process(entity : Entity, event : DialogueCloseEvent) {
+			if (event.dialogue?.getIds()?.contains(3264731) != true) return // Spellbook swap selection dialogue
+			if (entity !is Player) return
+			if (SpellBook.forInterface(entity.spellBookManager.spellBook) == SpellBook.LUNAR) {
+				entity.removeAttribute("spell:runes")
+				removeTimer<SpellbookSwap>(entity)
+			}
+		}
+	}
+	
+	override fun run(entity : Entity) : Boolean {
+		revertSpellbook(entity)
+		return false
+	}
+	
+	override fun onRegister(entity : Entity) {
+		entity.hook(SpellCast, spellCastHook)
+		entity.hook(SpellbookChanged, spellBookChangeHook)
+		entity.hook(DialogueClosed, dialogueCloseHook)
+		if (entity is Player) {
+			registerLogoutListener(entity, "spellbook:swap") { player ->
+				revertSpellbook(player)
+			}
+		}
+	}
+	
+	override fun onRemoval(entity : Entity) {
+		entity.unhook(spellCastHook)
+		entity.unhook(spellBookChangeHook)
+		entity.unhook(dialogueCloseHook)
+		if (entity is Player) {
+			clearLogoutListener(entity, "spellbook:swap")
+		}
+	}
+	
+	private fun revertSpellbook(entity : Entity) {
+		if (entity !is Player) return
+		if (SpellBook.forInterface(entity.spellBookManager.spellBook) == SpellBook.LUNAR) return
+		// Clear autocast
+		val weaponInterface = entity.getExtension<WeaponInterface>(WeaponInterface::class.java)
+		if (weaponInterface != null && entity.properties.autocastSpell != null) {
+			weaponInterface.selectAutoSpell(-1, true)
+		}
+		// Close autocast selection interface if it's still open
+		if (entity.getAttribute("autocast_select", false)) {
+			entity.removeAttribute("autocast_select")
+			entity.removeAttribute("autocast_component")
+			if (weaponInterface != null) {
+				entity.interfaceManager.openTab(weaponInterface)
+			}
+		}
+		entity.dispatch(SpellbookChangeEvent(
+				SpellBook.forInterface(entity.spellBookManager.spellBook),
+				SpellBook.LUNAR,
+				SpellbookChangeSource.SPELLBOOK_SWAP_RESTORE))
+		entity.spellBookManager.setSpellBook(SpellBook.LUNAR)
+		entity.spellBookManager.update(entity)
+	}
+}

Server/src/main/core/net/packet/PacketProcessor.kt

@@ -1,62 +1,61 @@
 package core.net.packet
 
-import core.game.event.ButtonClickEvent
+import content.global.ame.events.maze.MazeInterface
+import content.global.handlers.iface.ge.StockMarket
+import content.global.skill.magic.SpellListener
+import content.global.skill.magic.SpellListeners
+import content.global.skill.magic.SpellUtils
+import content.global.skill.summoning.familiar.FamiliarSpecial
+import core.ServerConstants
 import core.api.getAttribute
+import core.api.log
 import core.api.sendMessage
 import core.api.tryPop
+import core.api.utils.Vector
 import core.cache.def.impl.ItemDefinition
 import core.cache.def.impl.NPCDefinition
 import core.cache.def.impl.SceneryDefinition
 import core.game.container.Container
 import core.game.container.impl.BankContainer
-import core.game.node.Node
+import core.game.event.ButtonClickEvent
-import core.game.node.entity.player.Player
-import core.game.node.entity.player.info.Rights
-import core.game.node.entity.player.info.login.LoginConfiguration
-import core.game.node.entity.player.link.SpellBookManager
-import core.game.node.entity.combat.spell.MagicSpell
-import content.global.ame.events.maze.MazeInterface
-import content.global.skill.summoning.familiar.FamiliarSpecial
-import core.game.node.item.GroundItemManager
-import core.game.node.item.Item
-import core.game.node.scenery.Scenery
-import core.game.system.communication.ClanRank
-import core.game.system.communication.CommunicationInfo
-import core.game.system.task.Pulse
-import core.game.world.map.Location
-import core.game.world.map.RegionManager
-import core.game.world.update.flag.context.ChatMessage
-import core.game.world.update.flag.*
-import core.net.amsc.MSPacketRepository
-import core.net.packet.context.PlayerContext
-import core.net.packet.out.ClearMinimapFlag
-import org.rs09.consts.Components
-import proto.management.ClanMessage
-import proto.management.JoinClanRequest
-import proto.management.LeaveClanRequest
-import core.ServerConstants
 import core.game.ge.GrandExchange.Companion.getOfferStats
 import core.game.ge.GrandExchange.Companion.getRecommendedPrice
 import core.game.ge.GrandExchangeOffer
 import core.game.ge.PriceIndex
-import content.global.handlers.iface.ge.StockMarket
-import content.global.skill.magic.SpellListener
-import content.global.skill.magic.SpellListeners
-import content.global.skill.magic.SpellUtils
-import core.api.log
 import core.game.interaction.*
+import core.game.node.Node
+import core.game.node.entity.combat.spell.MagicSpell
+import core.game.node.entity.player.Player
 import core.game.node.entity.player.info.LogType
 import core.game.node.entity.player.info.PlayerMonitor
-import core.tools.SystemLogger
+import core.game.node.entity.player.info.Rights
+import core.game.node.entity.player.info.login.LoginConfiguration
+import core.game.node.entity.player.link.SpellBookManager
+import core.game.node.item.GroundItemManager
+import core.game.node.item.Item
+import core.game.node.scenery.Scenery
 import core.game.system.command.CommandSystem
+import core.game.system.communication.ClanRank
+import core.game.system.communication.CommunicationInfo
 import core.game.system.communication.GlobalChat
+import core.game.system.task.Pulse
 import core.game.world.GameWorld
+import core.game.world.map.Location
+import core.game.world.map.RegionManager
 import core.game.world.repository.Repository
+import core.game.world.update.flag.EntityFlag
+import core.game.world.update.flag.context.ChatMessage
+import core.net.amsc.MSPacketRepository
+import core.net.packet.context.PlayerContext
 import core.net.packet.`in`.Packet
 import core.net.packet.`in`.RunScript
+import core.net.packet.out.ClearMinimapFlag
 import core.tools.Log
 import core.worker.ManagementEvents
-import core.api.utils.Vector
+import org.rs09.consts.Components
+import proto.management.ClanMessage
+import proto.management.JoinClanRequest
+import proto.management.LeaveClanRequest
 import java.io.PrintWriter
 import java.io.StringWriter
 import java.lang.Math.min
@@ -423,6 +422,11 @@ object PacketProcessor {
             return
         if (player.getAttribute("magic:delay", -1) > GameWorld.ticks)
             return
+	// Validate spell packet interface matches player's actual spellbook
+	// This is to prevent player being able to cast spells when client has stale interface (e.g. after Spellbook swap reverts)
+	if (iface in intArrayOf(192, 193, 430)) {
+	    if (!SpellUtils.validateSpellbookInterface(player, iface)) return
+	}
         val book = SpellUtils.getBookFromInterface(iface)
         if (book != "none")
             SpellListeners.run(child, type, book, player, target)