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PaperMC/patches/api/0377-Player-Entity-Tracking-Events.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Yannick Lamprecht <yannicklamprecht@live.de>
Date: Wed, 30 Mar 2022 18:16:37 +0200
Subject: [PATCH] Player Entity Tracking Events
diff --git a/src/main/java/io/papermc/paper/event/player/PlayerTrackEntityEvent.java b/src/main/java/io/papermc/paper/event/player/PlayerTrackEntityEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..0e37c8c94a77f6f1c2c4f5290722ca02d76ab924
--- /dev/null
+++ b/src/main/java/io/papermc/paper/event/player/PlayerTrackEntityEvent.java
@@ -0,0 +1,60 @@
+package io.papermc.paper.event.player;
+
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.Player;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.player.PlayerEvent;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * Is called when a {@link Player} tracks an {@link Entity}.
+ * <p>
+ * If cancelled entity is not shown to the player and interaction in both directions is not possible.
+ * <p>
+ * Adding or removing entities from the world at the point in time this event is called is completely
+ * unsupported and should be avoided.
+ */
+@NullMarked
+public class PlayerTrackEntityEvent extends PlayerEvent implements Cancellable {
+
+ private static final HandlerList HANDLER_LIST = new HandlerList();
+
+ private final Entity entity;
+ private boolean cancelled;
+
+ @ApiStatus.Internal
+ public PlayerTrackEntityEvent(final Player player, final Entity entity) {
+ super(player);
+ this.entity = entity;
+ }
+
+ /**
+ * Gets the entity that will be tracked
+ *
+ * @return the entity tracked
+ */
+ public Entity getEntity() {
+ return this.entity;
+ }
+
+ @Override
+ public boolean isCancelled() {
+ return this.cancelled;
+ }
+
+ @Override
+ public void setCancelled(final boolean cancel) {
+ this.cancelled = cancel;
+ }
+
+ public static HandlerList getHandlerList() {
+ return HANDLER_LIST;
+ }
+
+ @Override
+ public HandlerList getHandlers() {
+ return HANDLER_LIST;
+ }
+}
diff --git a/src/main/java/io/papermc/paper/event/player/PlayerUntrackEntityEvent.java b/src/main/java/io/papermc/paper/event/player/PlayerUntrackEntityEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..30e01ffc8b0d4a8e43a046d85f1903cc20e0e84d
--- /dev/null
+++ b/src/main/java/io/papermc/paper/event/player/PlayerUntrackEntityEvent.java
@@ -0,0 +1,46 @@
+package io.papermc.paper.event.player;
+
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.player.PlayerEvent;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * Is called when a {@link Player} untracks an {@link Entity}.
+ * <p>
+ * Adding or removing entities from the world at the point in time this event is called is completely
+ * unsupported and should be avoided.
+ */
+@NullMarked
+public class PlayerUntrackEntityEvent extends PlayerEvent {
+
+ private static final HandlerList HANDLER_LIST = new HandlerList();
+
+ private final Entity entity;
+
+ @ApiStatus.Internal
+ public PlayerUntrackEntityEvent(final Player player, final Entity entity) {
+ super(player);
+ this.entity = entity;
+ }
+
+ /**
+ * Gets the entity that will be untracked
+ *
+ * @return the entity untracked
+ */
+ public Entity getEntity() {
+ return this.entity;
+ }
+
+ public static HandlerList getHandlerList() {
+ return HANDLER_LIST;
+ }
+
+ @Override
+ public HandlerList getHandlers() {
+ return HANDLER_LIST;
+ }
+}