Fixing Ghost Entities.

1 files changed, 58 insertions, 0 deletions

diff --git a/src/main/java/at/hannibal2/skyhanni/features/misc/FixGhostEntities.kt b/src/main/java/at/hannibal2/skyhanni/features/misc/FixGhostEntities.kt
new file mode 100644
index 000000000..69a1c6ee6
--- /dev/null
+++ b/src/main/java/at/hannibal2/skyhanni/features/misc/FixGhostEntities.kt
@@ -0,0 +1,58 @@
+package at.hannibal2.skyhanni.features.misc
+
+import at.hannibal2.skyhanni.SkyHanniMod
+import at.hannibal2.skyhanni.events.LorenzWorldChangeEvent
+import at.hannibal2.skyhanni.events.PacketEvent
+import at.hannibal2.skyhanni.utils.LorenzUtils
+import net.minecraft.network.play.server.S0CPacketSpawnPlayer
+import net.minecraft.network.play.server.S0FPacketSpawnMob
+import net.minecraft.network.play.server.S13PacketDestroyEntities
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent
+
+/**
+ * This feature fixes ghost entities sent by hypixel that are not properly deleted in the correct order.
+ * E.g. Diana or Dingeon mobs or nametags.
+ */
+object FixGhostEntities {
+
+    private val config get() = SkyHanniMod.feature.misc
+
+    private var recentlyRemovedEntities = ArrayDeque<Int>()
+
+    @SubscribeEvent
+    fun onWorldChange(event: LorenzWorldChangeEvent) {
+        recentlyRemovedEntities = ArrayDeque()
+    }
+
+    @SubscribeEvent
+    fun onReceiveCurrentShield(event: PacketEvent.ReceiveEvent) {
+        if (!isEnabled()) return
+
+        val packet = event.packet
+
+        if (packet is S0CPacketSpawnPlayer) {
+            if (packet.entityID in recentlyRemovedEntities) {
+                event.cancel()
+                LorenzUtils.debug("Removed bugged hypixel mob id Player")
+            }
+        }
+
+        if (packet is S0FPacketSpawnMob) {
+            if (packet.entityID in recentlyRemovedEntities) {
+                event.cancel()
+                LorenzUtils.debug("Removed bugged hypixel mob id Mob")
+            }
+        }
+
+        if (packet is S13PacketDestroyEntities) {
+            for (entityID in packet.entityIDs) {
+                recentlyRemovedEntities.add(entityID)
+                if (recentlyRemovedEntities.size == 10) {
+                    recentlyRemovedEntities.removeFirst()
+                }
+            }
+        }
+    }
+
+    fun isEnabled() = LorenzUtils.connectedToHypixel && config.fixGhostEntities
+}