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* Updated Upstream (Bukkit/CraftBukkit) Upstream has released updates that appears to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 45690fe9 SPIGOT-5047: Correct slot types for 1.14 inventories CraftBukkit Changes:4090d01fSPIGOT-5047: Correct slot types for 1.14 inventoriese8c08362SPIGOT-5046: World#getLoadedChunks returning inaccessible cached chunks.d445af3bSPIGOT-5067: Add item meta for 1.14 spawn eggs * Bring Chunk load checks in-line with spigot As of the last upstream merge spigot now checks ticket level status when returning loaded chunks for a world from api. Now our checks will respect that decision. * Fix spawn ticket levels Vanilla would keep the inner chunks of spawn available for ticking, however my changes made all chunks non-ticking. Resolve by changing ticket levels for spawn chunks inside the border to respect this behavior. * Make World#getChunkIfLoadedImmediately return only entity ticking chunks Mojang appears to be using chunks with level > 33 (non-ticking chunks) as cached chunks and not actually loaded chunks. * Bring all loaded checks in line with spigot Loaded chunks must be at least border chunks, or level <= 33
221 Zeilen
7.7 KiB
Diff
221 Zeilen
7.7 KiB
Diff
From 6538047548e090bb6c665f548411a53a52b466e0 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sun, 9 Sep 2018 12:39:06 -0400
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Subject: [PATCH] Mob Pathfinding API
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Adds an API to allow plugins to instruct a Mob to Pathfind to a Location or Entity
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This does not do anything to stop other AI rules from changing the location, so
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it is still up to the plugin to control that or override after another goal changed
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the location.
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You can use EntityPathfindEvent to cancel new pathfinds from overriding your current.
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diff --git a/src/main/java/com/destroystokyo/paper/entity/Pathfinder.java b/src/main/java/com/destroystokyo/paper/entity/Pathfinder.java
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new file mode 100644
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index 000000000..8b90a9053
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--- /dev/null
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+++ b/src/main/java/com/destroystokyo/paper/entity/Pathfinder.java
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@@ -0,0 +1,170 @@
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+package com.destroystokyo.paper.entity;
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+
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+import org.bukkit.Location;
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+import org.bukkit.entity.LivingEntity;
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+import org.bukkit.entity.Mob;
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+
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+import java.util.List;
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+import org.jetbrains.annotations.NotNull;
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+import org.jetbrains.annotations.Nullable;
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+
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+/**
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+ * Handles pathfinding operations for an Entity
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+ */
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+public interface Pathfinder {
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+
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+ /**
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+ *
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+ * @return The entity that is controlled by this pathfinder
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+ */
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+ @NotNull
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+ Mob getEntity();
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+
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+ /**
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+ * Instructs the Entity to stop trying to navigate to its current desired location
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+ */
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+ void stopPathfinding();
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+
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+ /**
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+ * If the entity is currently trying to navigate to a destination, this will return true
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+ * @return true if the entity is navigating to a destination
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+ */
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+ boolean hasPath();
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+
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+ /**
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+ * @return The location the entity is trying to navigate to, or null if there is no destination
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+ */
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+ @Nullable
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+ PathResult getCurrentPath();
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+
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+ /**
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+ * Calculates a destination for the Entity to navigate to, but does not set it
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+ * as the current target. Useful for calculating what would happen before setting it.
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+ * @param loc Location to navigate to
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+ * @return The closest Location the Entity can get to for this navigation, or null if no path could be calculated
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+ */
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+ @Nullable PathResult findPath(@NotNull Location loc);
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+
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+ /**
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+ * Calculates a destination for the Entity to navigate to to reach the target entity,
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+ * but does not set it as the current target.
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+ * Useful for calculating what would happen before setting it.
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+ *
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+ * The behavior of this PathResult is subject to the games pathfinding rules, and may
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+ * result in the pathfinding automatically updating to follow the target Entity.
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+ *
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+ * However, this behavior is not guaranteed, and is subject to the games behavior.
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+ *
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+ * @param target the Entity to navigate to
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+ * @return The closest Location the Entity can get to for this navigation, or null if no path could be calculated
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+ */
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+ @Nullable PathResult findPath(@NotNull LivingEntity target);
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+
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+ /**
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+ * Calculates a destination for the Entity to navigate to, and sets it with default speed
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+ * as the current target.
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+ * @param loc Location to navigate to
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+ * @return If the pathfinding was successfully started
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+ */
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+ default boolean moveTo(@NotNull Location loc) {
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+ return moveTo(loc, 1);
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+ }
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+
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+ /**
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+ * Calculates a destination for the Entity to navigate to, with desired speed
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+ * as the current target.
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+ * @param loc Location to navigate to
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+ * @param speed Speed multiplier to navigate at, where 1 is 'normal'
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+ * @return If the pathfinding was successfully started
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+ */
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+ default boolean moveTo(@NotNull Location loc, double speed) {
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+ PathResult path = findPath(loc);
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+ return path != null && moveTo(path, speed);
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+ }
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+
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+ /**
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+ * Calculates a destination for the Entity to navigate to to reach the target entity,
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+ * and sets it with default speed.
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+ *
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+ * The behavior of this PathResult is subject to the games pathfinding rules, and may
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+ * result in the pathfinding automatically updating to follow the target Entity.
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+ *
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+ * However, this behavior is not guaranteed, and is subject to the games behavior.
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+ *
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+ * @param target the Entity to navigate to
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+ * @return If the pathfinding was successfully started
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+ */
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+ default boolean moveTo(@NotNull LivingEntity target) {
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+ return moveTo(target, 1);
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+ }
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+
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+ /**
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+ * Calculates a destination for the Entity to navigate to to reach the target entity,
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+ * and sets it with specified speed.
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+ *
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+ * The behavior of this PathResult is subject to the games pathfinding rules, and may
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+ * result in the pathfinding automatically updating to follow the target Entity.
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+ *
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+ * However, this behavior is not guaranteed, and is subject to the games behavior.
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+ *
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+ * @param target the Entity to navigate to
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+ * @param speed Speed multiplier to navigate at, where 1 is 'normal'
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+ * @return If the pathfinding was successfully started
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+ */
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+ default boolean moveTo(@NotNull LivingEntity target, double speed) {
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+ PathResult path = findPath(target);
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+ return path != null && moveTo(path, speed);
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+ }
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+
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+ /**
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+ * Takes the result of a previous pathfinding calculation and sets it
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+ * as the active pathfinding with default speed.
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+ *
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+ * @param path The Path to start following
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+ * @return If the pathfinding was successfully started
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+ */
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+ default boolean moveTo(@NotNull PathResult path) {
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+ return moveTo(path, 1);
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+ }
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+
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+ /**
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+ * Takes the result of a previous pathfinding calculation and sets it
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+ * as the active pathfinding,
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+ *
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+ * @param path The Path to start following
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+ * @param speed Speed multiplier to navigate at, where 1 is 'normal'
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+ * @return If the pathfinding was successfully started
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+ */
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+ boolean moveTo(@NotNull PathResult path, double speed);
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+
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+ /**
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+ * Represents the result of a pathfinding calculation
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+ */
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+ interface PathResult {
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+
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+ /**
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+ * All currently calculated points to follow along the path to reach the destination location
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+ *
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+ * Will return points the entity has already moved past, see {@link #getNextPointIndex()}
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+ * @return List of points
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+ */
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+ @NotNull
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+ List<Location> getPoints();
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+
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+ /**
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+ * @return Returns the index of the current point along the points returned in {@link #getPoints()} the entity
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+ * is trying to reach, or null if we are done with this pathfinding.
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+ */
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+ int getNextPointIndex();
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+
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+ /**
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+ * @return The next location in the path points the entity is trying to reach, or null if there is no next point
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+ */
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+ @Nullable Location getNextPoint();
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+
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+ /**
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+ * @return The closest point the path can get to the target location
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+ */
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+ @Nullable Location getFinalPoint();
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+ }
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+}
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diff --git a/src/main/java/org/bukkit/entity/Mob.java b/src/main/java/org/bukkit/entity/Mob.java
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index 838440ff8..afdc103fe 100644
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--- a/src/main/java/org/bukkit/entity/Mob.java
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+++ b/src/main/java/org/bukkit/entity/Mob.java
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@@ -1,6 +1,7 @@
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package org.bukkit.entity;
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import org.bukkit.loot.Lootable;
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+import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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/**
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@@ -8,6 +9,15 @@ import org.jetbrains.annotations.Nullable;
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*/
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public interface Mob extends LivingEntity, Lootable {
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+ // Paper start
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+ /**
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+ * Enables access to control the pathing of an Entity
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+ * @return Pathfinding Manager for this entity
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+ */
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+ @NotNull
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+ com.destroystokyo.paper.entity.Pathfinder getPathfinder();
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+ // Paper end
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+
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/**
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* Instructs this Mob to set the specified LivingEntity as its target.
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* <p>
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--
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2.21.0
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