From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MrHua269 <novau233@163.com>
Date: Wed, 7 Feb 2024 06:34:15 +0000
Subject: [PATCH] Teleport async if entity was moving to another region at once


diff --git a/src/main/java/me/earthme/luminol/config/modules/fixes/FoliaEntityMovingFixConfig.java b/src/main/java/me/earthme/luminol/config/modules/fixes/FoliaEntityMovingFixConfig.java
new file mode 100644
index 0000000000000000000000000000000000000000..0e51d465db3554ac80d00c6b85cc1f013f3949ba
--- /dev/null
+++ b/src/main/java/me/earthme/luminol/config/modules/fixes/FoliaEntityMovingFixConfig.java
@@ -0,0 +1,28 @@
+package me.earthme.luminol.config.modules.fixes;
+
+import me.earthme.luminol.config.ConfigInfo;
+import me.earthme.luminol.config.EnumConfigCategory;
+import me.earthme.luminol.config.IConfigModule;
+
+public class FoliaEntityMovingFixConfig implements IConfigModule {
+    @ConfigInfo(baseName = "enabled", comments =
+            """
+                    A simple fix of a issue on folia\s
+                    (Some times the entity would\s
+                    have a large moment that cross the\s
+                    different tick regions and it would\s
+                    make the server crashed)  but sometimes it might doesn't work""")
+    public static boolean enabled = false;
+    @ConfigInfo(baseName = "warn_on_detected")
+    public static boolean warnOnDetected = true;
+
+    @Override
+    public EnumConfigCategory getCategory() {
+        return EnumConfigCategory.FIXES;
+    }
+
+    @Override
+    public String getBaseName() {
+        return "folia.fix_high_velocity_issue";
+    }
+}
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 8ad21bf69fe2ebbda7295c16971c31a55cd23108..cbf5bda50b87b8520ee6fa6d0b41c94b5c9f3583 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1086,10 +1086,40 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
     }
     // Paper end - detailed watchdog information
 
+    //Luminol start - Fix large pos moving
+    private volatile boolean preventMoving = false;
+    //Luminol end
+
     public void move(MoverType movementType, Vec3 movement) {
         final Vec3 originalMovement = movement; // Paper - Expose pre-collision velocity
         // Paper start - detailed watchdog information
         io.papermc.paper.util.TickThread.ensureTickThread("Cannot move an entity off-main");
+        //Luminol start - Fix high position moving
+        if (me.earthme.luminol.config.modules.fixes.FoliaEntityMovingFixConfig.enabled && io.papermc.paper.util.TickThread.isTickThread()){ //Except the threads because it may be called by the chunk system worker thread
+            if (this.preventMoving){
+                return;
+            }
+
+            var finalPosition = movement.add(this.position);
+            if (!io.papermc.paper.util.TickThread.isTickThreadFor(((ServerLevel) this.level),finalPosition)){
+                this.preventMoving = true;
+                this.teleportAsync(
+                        (ServerLevel) this.level(),
+                        finalPosition,
+                        this.getYRot(), this.getXRot(),
+                        null, PlayerTeleportEvent.TeleportCause.UNKNOWN,
+                        Entity.TELEPORT_FLAG_LOAD_CHUNK | Entity.TELEPORT_FLAG_TELEPORT_PASSENGERS,
+                        result -> {
+                            this.preventMoving = false;
+                        }
+                );
+                if (me.earthme.luminol.config.modules.fixes.FoliaEntityMovingFixConfig.warnOnDetected){
+                    MinecraftServer.LOGGER.warn("Entity {} with entityId {} has tried moving to another region!",this.type.getCategory().getName(),this.getId());
+                }
+                return;
+            }
+        }
+        //Luminol end
         synchronized (this.posLock) {
             this.moveStartX = this.getX();
             this.moveStartY = this.getY();