Fix unload queue storing chunks in wrong sections

The unload queue stored the chunks in the same section as
the chunk coordinate, when it needed to apply the unload shift.

Additionally, change the default region shift to the ticket
propagator shift as there is no benefit to using a low region
shift since no regionizing is occuring. This makes the unload
queue shift 6, which should reduce the number of sections to deal
with while processing unloads.

patches/server/0991-Chunk-System-Starlight-from-Moonrise.patch

@@ -8558,10 +8558,10 @@ index 0000000000000000000000000000000000000000..82e8ce73b77accd6a4210f88c9fccb32
 +}
 diff --git a/src/main/java/ca/spottedleaf/moonrise/patches/chunk_system/queue/ChunkUnloadQueue.java b/src/main/java/ca/spottedleaf/moonrise/patches/chunk_system/queue/ChunkUnloadQueue.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..bc07e710a5854fd526e3bb56d1565602ec728ce1
+index 0000000000000000000000000000000000000000..7eafc5b7cba23d8dec92ecc1050afe3fd8c9e309
 --- /dev/null
 +++ b/src/main/java/ca/spottedleaf/moonrise/patches/chunk_system/queue/ChunkUnloadQueue.java
-@@ -0,0 +1,140 @@
+@@ -0,0 +1,144 @@
 +package ca.spottedleaf.moonrise.patches.chunk_system.queue;
 +
 +import ca.spottedleaf.concurrentutil.map.ConcurrentLong2ReferenceChainedHashTable;
@@ -8627,12 +8627,13 @@ index 0000000000000000000000000000000000000000..bc07e710a5854fd526e3bb56d1565602
 +        final int shift = this.coordinateShift;
 +        final int sectionX = chunkX >> shift;
 +        final int sectionZ = chunkZ >> shift;
++        final long sectionKey = CoordinateUtils.getChunkKey(sectionX, sectionZ);
 +        final long chunkKey = CoordinateUtils.getChunkKey(chunkX, chunkZ);
 +
-+        UnloadSection section = this.unloadSections.get(chunkKey);
++        UnloadSection section = this.unloadSections.get(sectionKey);
 +        if (section == null) {
 +            section = new UnloadSection(this.orderGenerator.getAndIncrement());
-+            this.unloadSections.put(chunkKey, section);
++            this.unloadSections.put(sectionKey, section);
 +        }
 +
 +        return section.chunks.add(chunkKey);
@@ -8644,9 +8645,10 @@ index 0000000000000000000000000000000000000000..bc07e710a5854fd526e3bb56d1565602
 +        final int shift = this.coordinateShift;
 +        final int sectionX = chunkX >> shift;
 +        final int sectionZ = chunkZ >> shift;
++        final long sectionKey = CoordinateUtils.getChunkKey(sectionX, sectionZ);
 +        final long chunkKey = CoordinateUtils.getChunkKey(chunkX, chunkZ);
 +
-+        final UnloadSection section = this.unloadSections.get(chunkKey);
++        final UnloadSection section = this.unloadSections.get(sectionKey);
 +
 +        if (section == null) {
 +            return false;
@@ -8657,7 +8659,7 @@ index 0000000000000000000000000000000000000000..bc07e710a5854fd526e3bb56d1565602
 +        }
 +
 +        if (section.chunks.isEmpty()) {
-+            this.unloadSections.remove(chunkKey);
++            this.unloadSections.remove(sectionKey);
 +        }
 +
 +        return true;
@@ -8678,14 +8680,16 @@ index 0000000000000000000000000000000000000000..bc07e710a5854fd526e3bb56d1565602
 +            sectionJson.add("coordinates", coordinates);
 +
 +            final UnloadSection actualSection = this.getSectionUnsynchronized(section.sectionX(), section.sectionZ());
-+            for (final LongIterator iterator = actualSection.chunks.clone().iterator(); iterator.hasNext();) {
-+                final long coordinate = iterator.nextLong();
++            if (actualSection != null) {
++                for (final LongIterator iterator = actualSection.chunks.clone().iterator(); iterator.hasNext(); ) {
++                    final long coordinate = iterator.nextLong();
 +
-+                final JsonObject coordinateJson = new JsonObject();
-+                coordinates.add(coordinateJson);
++                    final JsonObject coordinateJson = new JsonObject();
++                    coordinates.add(coordinateJson);
 +
-+                coordinateJson.addProperty("chunkX", Integer.valueOf(CoordinateUtils.getChunkX(coordinate)));
-+                coordinateJson.addProperty("chunkZ", Integer.valueOf(CoordinateUtils.getChunkZ(coordinate)));
++                    coordinateJson.addProperty("chunkX", Integer.valueOf(CoordinateUtils.getChunkX(coordinate)));
++                    coordinateJson.addProperty("chunkZ", Integer.valueOf(CoordinateUtils.getChunkZ(coordinate)));
++                }
 +            }
 +        }
 +
@@ -22849,7 +22853,7 @@ index 2a5453707bc172d8d0efe3f11959cb0b5f830984..b8499c1cea97a1a88a53053bc7da132f
 
 diff --git a/src/main/java/io/papermc/paper/threadedregions/TickRegions.java b/src/main/java/io/papermc/paper/threadedregions/TickRegions.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..9d04285165241baec1005cb3ae81a623bcd3945a
+index 0000000000000000000000000000000000000000..8424cf9d4617b4732d44cc460d25b04481068989
 --- /dev/null
 +++ b/src/main/java/io/papermc/paper/threadedregions/TickRegions.java
 @@ -0,0 +1,10 @@
@@ -22859,7 +22863,7 @@ index 0000000000000000000000000000000000000000..9d04285165241baec1005cb3ae81a623
 +public class TickRegions {
 +
 +    public static int getRegionChunkShift() {
-+        return 2;
++        return ca.spottedleaf.moonrise.patches.chunk_system.scheduling.ThreadedTicketLevelPropagator.SECTION_SHIFT;
 +    }
 +
 +}