Fix region removal checking

src/main/java/emu/grasscutter/game/entity/EntityRegion.java

@@ -6,9 +6,10 @@ import emu.grasscutter.net.proto.SceneEntityInfoOuterClass;
 import emu.grasscutter.scripts.data.SceneRegion;
 import emu.grasscutter.utils.Position;
 import it.unimi.dsi.fastutil.ints.Int2FloatMap;
+import lombok.Getter;
+
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
-import lombok.Getter;
 
 @Getter
 public class EntityRegion extends GameEntity {

src/main/java/emu/grasscutter/scripts/SceneScriptManager.java

@@ -1,7 +1,5 @@
 package emu.grasscutter.scripts;
 
-import static emu.grasscutter.scripts.constants.EventType.*;
-
 import com.github.davidmoten.rtreemulti.RTree;
 import com.github.davidmoten.rtreemulti.geometry.Geometry;
 import emu.grasscutter.Grasscutter;
@@ -28,6 +26,14 @@ import emu.grasscutter.utils.Position;
 import io.netty.util.concurrent.FastThreadLocalThread;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import kotlin.Pair;
+import lombok.val;
+import org.luaj.vm2.LuaError;
+import org.luaj.vm2.LuaValue;
+import org.luaj.vm2.lib.jse.CoerceJavaToLua;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.nio.file.Files;
@@ -35,13 +41,8 @@ import java.util.*;
 import java.util.concurrent.*;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
-import javax.annotation.Nonnull;
+
-import javax.annotation.Nullable;
+import static emu.grasscutter.scripts.constants.EventType.EVENT_TIMER_EVENT;
-import kotlin.Pair;
-import lombok.val;
-import org.luaj.vm2.LuaError;
-import org.luaj.vm2.LuaValue;
-import org.luaj.vm2.lib.jse.CoerceJavaToLua;
 
 public class SceneScriptManager {
     private final Scene scene;
@@ -351,9 +352,10 @@ public class SceneScriptManager {
     }
 
     public synchronized void deregisterRegion(SceneRegion region) {
-        var instance =
+        this.regions.values().stream()
-                regions.values().stream().filter(r -> r.getConfigId() == region.config_id).findFirst();
+            .filter(r -> r.getMetaRegion().equals(region))
-        instance.ifPresent(entityRegion -> regions.remove(entityRegion.getId()));
+            .findFirst()
+            .ifPresent(entityRegion -> this.regions.remove(entityRegion.getId()));
     }
 
     public Map<Integer, Set<SceneGroup>> getLoadedGroupSetPerBlock() {

src/main/java/emu/grasscutter/scripts/data/SceneRegion.java

@@ -2,9 +2,10 @@ package emu.grasscutter.scripts.data;
 
 import emu.grasscutter.scripts.constants.ScriptRegionShape;
 import emu.grasscutter.utils.Position;
-import java.util.List;
 import lombok.Setter;
 
+import java.util.List;
+
 @Setter
 public class SceneRegion {
     public int config_id;
@@ -20,6 +21,13 @@ public class SceneRegion {
 
     public transient SceneGroup group;
 
+    /**
+     * @return The group ID for this region.
+     */
+    public int getGroupId() {
+        return this.group == null ? -1 : this.group.id;
+    }
+
     public boolean contains(Position position) {
         switch (shape) {
             case ScriptRegionShape.CUBIC:
@@ -35,4 +43,21 @@ public class SceneRegion {
         }
         return false;
     }
+
+    /**
+     * Checks if two regions are the same.
+     *
+     * @param region The region to compare to.
+     * @return True if the regions are the same, false otherwise.
+     */
+    public boolean equals(SceneRegion region) {
+        return this.config_id == region.config_id
+                && this.shape == region.shape
+                && this.pos.equals(region.pos)
+                && this.size.equals(region.size)
+                && this.radius == region.radius
+                && this.area_id == region.area_id
+                && this.height == region.height
+                && this.point_array.equals(region.point_array);
+    }
 }