Fix PS4 players crashing on certain dimension switches

core/src/main/java/org/geysermc/geyser/session/GeyserSession.java

@@ -392,7 +392,7 @@ public class GeyserSession implements GeyserConnection, CommandSender {
      * Whether to work around 1.13's different behavior in villager trading menus.
      */
     @Setter
-    private boolean emulatePost1_14Logic = true;
+    private boolean emulatePost1_13Logic = true;
     /**
      * Starting in 1.17, Java servers expect the <code>carriedItem</code> parameter of the serverbound click container
      * packet to be the current contents of the mouse after the transaction has been done. 1.16 expects the clicked slot

core/src/main/java/org/geysermc/geyser/session/cache/TagCache.java

@@ -101,10 +101,10 @@ public class TagCache {
         this.smallFlowers = IntList.of(itemTags.get("minecraft:small_flowers"));
 
         // Hack btw
-        boolean emulatePost1_14Logic = itemTags.get("minecraft:signs").length > 1;
-        session.setEmulatePost1_14Logic(emulatePost1_14Logic);
+        boolean emulatePost1_13Logic = itemTags.get("minecraft:signs").length > 1;
+        session.setEmulatePost1_13Logic(emulatePost1_13Logic);
         if (logger.isDebug()) {
-            logger.debug("Emulating post 1.14 villager logic for " + session.name() + "? " + emulatePost1_14Logic);
+            logger.debug("Emulating post 1.13 villager logic for " + session.name() + "? " + emulatePost1_13Logic);
         }
     }
 

core/src/main/java/org/geysermc/geyser/translator/inventory/MerchantInventoryTranslator.java

@@ -159,7 +159,7 @@ public class MerchantInventoryTranslator extends BaseInventoryTranslator {
         ServerboundSelectTradePacket packet = new ServerboundSelectTradePacket(tradeChoice);
         session.sendDownstreamPacket(packet);
 
-        if (session.isEmulatePost1_14Logic()) {
+        if (session.isEmulatePost1_13Logic()) {
             // 1.18 Java cooperates nicer than older versions
             if (inventory instanceof MerchantContainer merchantInventory) {
                 merchantInventory.onTradeSelected(session, tradeChoice);

core/src/main/java/org/geysermc/geyser/translator/protocol/java/entity/player/JavaPlayerPositionTranslator.java

@@ -31,6 +31,7 @@ import com.github.steveice10.mc.protocol.packet.ingame.serverbound.level.Serverb
 import com.github.steveice10.mc.protocol.packet.ingame.serverbound.player.ServerboundMovePlayerPosRotPacket;
 import com.nukkitx.math.vector.Vector3f;
 import com.nukkitx.protocol.bedrock.data.entity.EntityLinkData;
+import com.nukkitx.protocol.bedrock.packet.ChunkRadiusUpdatedPacket;
 import com.nukkitx.protocol.bedrock.packet.MovePlayerPacket;
 import com.nukkitx.protocol.bedrock.packet.RespawnPacket;
 import com.nukkitx.protocol.bedrock.packet.SetEntityLinkPacket;
@@ -84,6 +85,15 @@ public class JavaPlayerPositionTranslator extends PacketTranslator<ClientboundPl
 
             acceptTeleport(session, packet.getX(), packet.getY(), packet.getZ(), packet.getYaw(), packet.getPitch(), packet.getTeleportId());
 
+            if (session.getServerRenderDistance() > 47 && !session.isEmulatePost1_13Logic()) {
+                // See DimensionUtils for an explanation
+                ChunkRadiusUpdatedPacket chunkRadiusUpdatedPacket = new ChunkRadiusUpdatedPacket();
+                chunkRadiusUpdatedPacket.setRadius(session.getServerRenderDistance());
+                session.sendUpstreamPacket(chunkRadiusUpdatedPacket);
+
+                session.setLastChunkPosition(null);
+            }
+
             ChunkUtils.updateChunkPosition(session, pos.toInt());
 
             if (session.getGeyser().getConfig().isDebugMode()) {

core/src/main/java/org/geysermc/geyser/util/DimensionUtils.java

@@ -28,6 +28,7 @@ package org.geysermc.geyser.util;
 import com.github.steveice10.mc.protocol.data.game.entity.Effect;
 import com.nukkitx.math.vector.Vector3f;
 import com.nukkitx.protocol.bedrock.packet.ChangeDimensionPacket;
+import com.nukkitx.protocol.bedrock.packet.ChunkRadiusUpdatedPacket;
 import com.nukkitx.protocol.bedrock.packet.MobEffectPacket;
 import com.nukkitx.protocol.bedrock.packet.StopSoundPacket;
 import org.geysermc.geyser.entity.type.Entity;
@@ -69,6 +70,22 @@ public class DimensionUtils {
         session.getPistonCache().clear();
         session.getSkullCache().clear();
 
+        if (session.getServerRenderDistance() > 47 && !session.isEmulatePost1_13Logic()) {
+            // The server-sided view distance wasn't a thing until Minecraft Java 1.14
+            // So ViaVersion compensates by sending a "view distance" of 64
+            // That's fine, except when the actual view distance sent from the server is five chunks
+            // The client locks up when switching dimensions, expecting more chunks than it's getting
+            // To solve this, we cap at 32 unless we know that the render distance actually exceeds 32
+            // 47 is the Bedrock equivalent of 32
+            // Also, as of 1.19: PS4 crashes with a ChunkRadiusUpdatedPacket too large
+            session.getGeyser().getLogger().debug("Applying dimension switching workaround for Bedrock render distance of "
+                    + session.getServerRenderDistance());
+            ChunkRadiusUpdatedPacket chunkRadiusUpdatedPacket = new ChunkRadiusUpdatedPacket();
+            chunkRadiusUpdatedPacket.setRadius(47);
+            session.sendUpstreamPacket(chunkRadiusUpdatedPacket);
+            // Will be re-adjusted on spawn
+        }
+
         Vector3f pos = Vector3f.from(0, Short.MAX_VALUE, 0);
 
         ChangeDimensionPacket changeDimensionPacket = new ChangeDimensionPacket();