From 2253da417ddc5dc458390a03d4fcdb86ed1a3838 Mon Sep 17 00:00:00 2001
From: Cryptite <cryptite@gmail.com>
Date: Mon, 6 Nov 2023 08:24:33 -0600
Subject: [PATCH] ChunkStatusChangeEvent

---
 patches/api/0020-ChunkStatusChangeEvent.patch | 70 +++++++++++++++++++
 .../server/0040-ChunkStatusChangeEvent.patch  | 24 +++++++
 2 files changed, 94 insertions(+)
 create mode 100644 patches/api/0020-ChunkStatusChangeEvent.patch
 create mode 100644 patches/server/0040-ChunkStatusChangeEvent.patch

diff --git a/patches/api/0020-ChunkStatusChangeEvent.patch b/patches/api/0020-ChunkStatusChangeEvent.patch
new file mode 100644
index 000000000..2dc78fdb6
--- /dev/null
+++ b/patches/api/0020-ChunkStatusChangeEvent.patch
@@ -0,0 +1,70 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Cryptite <cryptite@gmail.com>
+Date: Mon, 6 Nov 2023 08:19:46 -0600
+Subject: [PATCH] ChunkStatusChangeEvent
+
+
+diff --git a/src/main/java/com/destroystokyo/paper/event/chunk/ChunkStatusChangeEvent.java b/src/main/java/com/destroystokyo/paper/event/chunk/ChunkStatusChangeEvent.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..512664d4a7a6821b8d79d0aabf5c31a61fcae6b9
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/event/chunk/ChunkStatusChangeEvent.java
+@@ -0,0 +1,58 @@
++package com.destroystokyo.paper.event.chunk;
++
++import org.bukkit.Chunk;
++import org.bukkit.event.Event;
++import org.bukkit.event.HandlerList;
++import org.jetbrains.annotations.NotNull;
++
++/**
++ * Called when the Full Status of a Chunk changes
++ */
++public class ChunkStatusChangeEvent extends Event {
++
++    private static final HandlerList handlers = new HandlerList();
++    private final Chunk chunk;
++    private final ChunkStatus currentState;
++    private final ChunkStatus newState;
++
++    public ChunkStatusChangeEvent(Chunk chunk, ChunkStatus currentState, ChunkStatus newState) {
++        super();
++        this.chunk = chunk;
++        this.currentState = currentState;
++        this.newState = newState;
++    }
++
++    public Chunk getChunk() {
++        return chunk;
++    }
++
++    public ChunkStatus getCurrentState() {
++        return currentState;
++    }
++
++    public ChunkStatus getNewState() {
++        return newState;
++    }
++
++    public boolean isUpgrade() {
++        return newState.ordinal() > currentState.ordinal();
++    }
++
++    @Override
++    @NotNull
++    public HandlerList getHandlers() {
++        return handlers;
++    }
++
++    @NotNull
++    public static HandlerList getHandlerList() {
++        return handlers;
++    }
++
++    public enum ChunkStatus {
++        INACCESSIBLE,
++        FULL,
++        BLOCK_TICKING,
++        ENTITY_TICKING;
++    }
++}
diff --git a/patches/server/0040-ChunkStatusChangeEvent.patch b/patches/server/0040-ChunkStatusChangeEvent.patch
new file mode 100644
index 000000000..366256ef1
--- /dev/null
+++ b/patches/server/0040-ChunkStatusChangeEvent.patch
@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Cryptite <cryptite@gmail.com>
+Date: Mon, 6 Nov 2023 08:19:45 -0600
+Subject: [PATCH] ChunkStatusChangeEvent
+
+
+diff --git a/src/main/java/io/papermc/paper/chunk/system/scheduling/NewChunkHolder.java b/src/main/java/io/papermc/paper/chunk/system/scheduling/NewChunkHolder.java
+index b66a7d4aab887309579154815a0d4abf9de506b0..050a667d79df28570f95fe616696d0915257cc89 100644
+--- a/src/main/java/io/papermc/paper/chunk/system/scheduling/NewChunkHolder.java
++++ b/src/main/java/io/papermc/paper/chunk/system/scheduling/NewChunkHolder.java
+@@ -1324,6 +1324,13 @@ public final class NewChunkHolder {
+                 // chunks cannot downgrade state while status is pending a change
+                 final LevelChunk chunk = (LevelChunk)this.currentChunk;
+ 
++                // Slice start
++                new com.destroystokyo.paper.event.chunk.ChunkStatusChangeEvent(new org.bukkit.craftbukkit.CraftChunk(chunk),
++                        com.destroystokyo.paper.event.chunk.ChunkStatusChangeEvent.ChunkStatus.valueOf(currState.name()),
++                        com.destroystokyo.paper.event.chunk.ChunkStatusChangeEvent.ChunkStatus.valueOf(nextState.name()))
++                        .callEvent();
++                // Slice end
++
+                 // Note: we assume that only load/unload contain plugin logic
+                 // plugin logic is anything stupid enough to possibly change the chunk status while it is already
+                 // being changed (i.e during load it is possible it will try to set to full ticking)