From b99e8381abf6db4569e72d18714d091f2b59f4fe Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 28 Mar 2016 21:24:45 -0400
Subject: [PATCH] EntityPathfindEvent

Fires when an Entity decides to start moving to a location.

This is not the same as a move event. This only fires when an entity chooses
to start moving to a location, and allows cancelling that pathfind.

Additionally, only get is supported for now. Unsure if changing target location
is safe to do.
---
 .../0030-EntityPathfindEvent.patch            | 91 +++++++++++++++++++
 .../0118-EntityPathfindEvent.patch            | 39 ++++++++
 2 files changed, 130 insertions(+)
 create mode 100644 Spigot-API-Patches/0030-EntityPathfindEvent.patch
 create mode 100644 Spigot-Server-Patches/0118-EntityPathfindEvent.patch

diff --git a/Spigot-API-Patches/0030-EntityPathfindEvent.patch b/Spigot-API-Patches/0030-EntityPathfindEvent.patch
new file mode 100644
index 000000000..1b037fb45
--- /dev/null
+++ b/Spigot-API-Patches/0030-EntityPathfindEvent.patch
@@ -0,0 +1,91 @@
+From 973cff5bb740f213b5a90297c9cd132e4a57d8e4 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Mon, 28 Mar 2016 21:15:34 -0400
+Subject: [PATCH] EntityPathfindEvent
+
+Fires when an Entity decides to start moving to a location.
+
+diff --git a/src/main/java/com/destroystokyo/paper/event/entity/EntityPathfindEvent.java b/src/main/java/com/destroystokyo/paper/event/entity/EntityPathfindEvent.java
+new file mode 100644
+index 0000000..21cab26
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/event/entity/EntityPathfindEvent.java
+@@ -0,0 +1,75 @@
++package com.destroystokyo.paper.event.entity;
++
++import org.bukkit.Location;
++import org.bukkit.entity.Entity;
++import org.bukkit.event.Cancellable;
++import org.bukkit.event.Event;
++import org.bukkit.event.HandlerList;
++
++/**
++ * Fired when an Entity decides to start moving towards a location.
++ *
++ * This event does not fire for the entities actual movement. Only when it
++ * is choosing to start moving to a location.
++ */
++public class EntityPathfindEvent extends Event implements Cancellable {
++    private final Entity entity;
++    private final Entity targetEntity;
++    private final Location loc;
++    public EntityPathfindEvent(Entity entity, Location loc, Entity targetEntity) {
++        this.entity = entity;
++        this.targetEntity = targetEntity;
++        this.loc = loc;
++    }
++
++    /**
++     * The Entity that is pathfinding.
++     * @return The Entity that is pathfinding.
++     */
++    public Entity getEntity() {
++        return entity;
++    }
++
++    /**
++     * If the Entity is trying to pathfind to an entity, this is the entity in relation.
++     *
++     * Otherwise this will return null.
++     *
++     * @return The entity target or null
++     */
++    public Entity getTargetEntity() {
++        return targetEntity;
++    }
++
++    /**
++     * The Location of where the entity is about to move to.
++     *
++     * Note that if the target happened to of been an entity
++     * @return Location of where the entity is trying to pathfind to.
++     */
++    public Location getLoc() {
++        return loc;
++    }
++
++    private static final HandlerList handlers = new HandlerList();
++
++    public HandlerList getHandlers() {
++        return handlers;
++    }
++
++    public static HandlerList getHandlerList() {
++        return handlers;
++    }
++
++    private boolean cancelled = false;
++
++    @Override
++    public boolean isCancelled() {
++        return cancelled;
++    }
++
++    @Override
++    public void setCancelled(boolean cancel) {
++        cancelled = cancel;
++    }
++}
+-- 
+2.7.4
+
diff --git a/Spigot-Server-Patches/0118-EntityPathfindEvent.patch b/Spigot-Server-Patches/0118-EntityPathfindEvent.patch
new file mode 100644
index 000000000..ec347d1b9
--- /dev/null
+++ b/Spigot-Server-Patches/0118-EntityPathfindEvent.patch
@@ -0,0 +1,39 @@
+From e5e8089880653c1435a16e5f25731a5b5ba1bf6e Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Mon, 28 Mar 2016 21:22:26 -0400
+Subject: [PATCH] EntityPathfindEvent
+
+Fires when an Entity decides to start moving to a location.
+
+diff --git a/src/main/java/net/minecraft/server/NavigationAbstract.java b/src/main/java/net/minecraft/server/NavigationAbstract.java
+index 9687785..0926d22 100644
+--- a/src/main/java/net/minecraft/server/NavigationAbstract.java
++++ b/src/main/java/net/minecraft/server/NavigationAbstract.java
+@@ -3,7 +3,7 @@ package net.minecraft.server;
+ public abstract class NavigationAbstract {
+ 
+     private static int f = 20;
+-    protected EntityInsentient a;
++    protected EntityInsentient a;public Entity getEntity() { return a; } // Paper
+     protected World b;
+     protected PathEntity c;
+     protected double d;
+@@ -73,6 +73,7 @@ public abstract class NavigationAbstract {
+         } else if (this.c != null && !this.c.b() && blockposition.equals(this.r)) {
+             return this.c;
+         } else {
++            if (!new com.destroystokyo.paper.event.entity.EntityPathfindEvent(getEntity().getBukkitEntity(), MCUtil.toLocation(getEntity().world, blockposition), null).callEvent()) { return null; } // Paper
+             this.r = blockposition;
+             float f = this.h();
+ 
+@@ -96,6 +97,7 @@ public abstract class NavigationAbstract {
+             if (this.c != null && !this.c.b() && blockposition.equals(this.r)) {
+                 return this.c;
+             } else {
++                if (!new com.destroystokyo.paper.event.entity.EntityPathfindEvent(getEntity().getBukkitEntity(), MCUtil.toLocation(entity.world, blockposition), entity.getBukkitEntity()).callEvent()) { return null; } // Paper
+                 this.r = blockposition;
+                 float f = this.h();
+ 
+-- 
+2.7.4
+