From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: NONPLAYT <76615486+NONPLAYT@users.noreply.github.com>
Date: Thu, 10 Jul 2025 04:51:08 +0300
Subject: [PATCH] Raytrace Entity Tracker

Original project: https://github.com/tr7zw/EntityCulling
Original license: Custom License

Original project: https://github.com/LogisticsCraft/OcclusionCulling
Original license: MIT

diff --git a/net/minecraft/world/entity/Entity.java b/net/minecraft/world/entity/Entity.java
index 56483d9e770e29526a36d4c8c5565092acb227c7..9db43874a94770d49ea5ff48a46c4657e4819e98 100644
--- a/net/minecraft/world/entity/Entity.java
+++ b/net/minecraft/world/entity/Entity.java
@@ -147,7 +147,7 @@ import net.minecraft.world.waypoints.WaypointTransmitter;
 import org.jetbrains.annotations.Contract;
 import org.slf4j.Logger;
 
-public abstract class Entity implements SyncedDataHolder, DebugValueSource, Nameable, ItemOwner, EntityAccess, ScoreHolder, DataComponentGetter, ca.spottedleaf.moonrise.patches.chunk_system.entity.ChunkSystemEntity, ca.spottedleaf.moonrise.patches.entity_tracker.EntityTrackerEntity { // Paper - rewrite chunk system // Paper - optimise entity tracker
+public abstract class Entity implements SyncedDataHolder, DebugValueSource, Nameable, ItemOwner, EntityAccess, ScoreHolder, DataComponentGetter, ca.spottedleaf.moonrise.patches.chunk_system.entity.ChunkSystemEntity, ca.spottedleaf.moonrise.patches.entity_tracker.EntityTrackerEntity, dev.tr7zw.entityculling.versionless.access.Cullable { // Paper - rewrite chunk system // Paper - optimise entity tracker // DivineMC - Raytrace Entity Tracker
     public static javax.script.ScriptEngine scriptEngine = new javax.script.ScriptEngineManager().getEngineByName("rhino"); // Purpur - Configurable entity base attributes
     // CraftBukkit start
     private static final int CURRENT_LEVEL = 2;
@@ -5531,4 +5531,47 @@ public abstract class Entity implements SyncedDataHolder, DebugValueSource, Name
         return false;
     }
     // Purpur end - Ridables
+
+    // DivineMC start - Raytrace Entity Tracker
+    private long lasttime = 0;
+    private boolean culled = false;
+    private boolean outOfCamera = false;
+
+    @Override
+    public void setTimeout() {
+        this.lasttime = System.currentTimeMillis() + 1000;
+    }
+
+    @Override
+    public boolean isForcedVisible() {
+        return this.lasttime > System.currentTimeMillis();
+    }
+
+    @Override
+    public void setCulled(boolean value) {
+        this.culled = value;
+        if (!value) {
+            setTimeout();
+        }
+    }
+
+    @Override
+    public boolean isCulled() {
+        if (!org.bxteam.divinemc.config.DivineConfig.MiscCategory.retEnabled) return false;
+
+        return this.culled;
+    }
+
+    @Override
+    public void setOutOfCamera(boolean value) {
+        this.outOfCamera = value;
+    }
+
+    @Override
+    public boolean isOutOfCamera() {
+        if (!org.bxteam.divinemc.config.DivineConfig.MiscCategory.retEnabled) return false;
+
+        return this.outOfCamera;
+    }
+    // DivineMC end - Raytrace Entity Tracker
 }
diff --git a/net/minecraft/world/entity/EntityType.java b/net/minecraft/world/entity/EntityType.java
index d9d45a3e7436d5a211e3f2b6810f76e0a22766e8..4c6ca2979a370346008b981e045625668269e380 100644
--- a/net/minecraft/world/entity/EntityType.java
+++ b/net/minecraft/world/entity/EntityType.java
@@ -1202,6 +1202,7 @@ public class EntityType<T extends Entity> implements FeatureElement, EntityTypeT
     private final float spawnDimensionsScale;
     private final FeatureFlagSet requiredFeatures;
     private final boolean allowedInPeaceful;
+    public boolean skipRaytracingCheck = false; // DivineMC - Raytrace Entity Tracker
 
     private static <T extends Entity> EntityType<T> register(ResourceKey<EntityType<?>> key, EntityType.Builder<T> builder) {
         return Registry.register(BuiltInRegistries.ENTITY_TYPE, key, builder.build(key));
diff --git a/net/minecraft/world/entity/player/Player.java b/net/minecraft/world/entity/player/Player.java
index 68942a2d15cfeddf1928a3ad270b1ce29685f8f0..149332116ff211c122b1dbf9b8010610174451db 100644
--- a/net/minecraft/world/entity/player/Player.java
+++ b/net/minecraft/world/entity/player/Player.java
@@ -184,6 +184,25 @@ public abstract class Player extends Avatar implements ContainerUser {
     public int burpDelay = 0; // Purpur - Burp delay
     public boolean canPortalInstant = false; // Purpur - Add portal permission bypass
     public int sixRowEnderchestSlotCount = -1; // Purpur - Barrels and enderchests 6 rows
+    // DivineMC start - Raytrace Entity Tracker
+    public dev.tr7zw.entityculling.CullTask cullTask;
+    {
+        if (!org.bxteam.divinemc.config.DivineConfig.MiscCategory.retEnabled) {
+            this.cullTask = null;
+        } else {
+            final com.logisticscraft.occlusionculling.OcclusionCullingInstance culling = new com.logisticscraft.occlusionculling.OcclusionCullingInstance(
+                org.bxteam.divinemc.config.DivineConfig.MiscCategory.retTracingDistance,
+                new dev.tr7zw.entityculling.DefaultChunkDataProvider(this.level())
+            );
+
+            this.cullTask = new dev.tr7zw.entityculling.CullTask(
+                culling, this,
+                org.bxteam.divinemc.config.DivineConfig.MiscCategory.retHitboxLimit,
+                org.bxteam.divinemc.config.DivineConfig.MiscCategory.retCheckIntervalMs
+            );
+        }
+    }
+    // DivineMC end - Raytrace Entity Tracker
 
     // CraftBukkit start
     public boolean fauxSleeping;
@@ -270,6 +289,25 @@ public abstract class Player extends Avatar implements ContainerUser {
 
     @Override
     public void tick() {
+        // DivineMC start - Raytrace Entity Tracker
+        if (!org.bxteam.divinemc.config.DivineConfig.MiscCategory.retEnabled) {
+            if (this.cullTask != null) this.cullTask.signalStop();
+            this.cullTask = null;
+        } else {
+            final com.logisticscraft.occlusionculling.OcclusionCullingInstance culling = new com.logisticscraft.occlusionculling.OcclusionCullingInstance(
+                org.bxteam.divinemc.config.DivineConfig.MiscCategory.retTracingDistance,
+                new dev.tr7zw.entityculling.DefaultChunkDataProvider(this.level())
+            );
+
+            this.cullTask = new dev.tr7zw.entityculling.CullTask(
+                culling, this,
+                org.bxteam.divinemc.config.DivineConfig.MiscCategory.retHitboxLimit,
+                org.bxteam.divinemc.config.DivineConfig.MiscCategory.retCheckIntervalMs
+            );
+        }
+        if (this.cullTask != null) this.cullTask.setup();
+        if (this.cullTask != null) this.cullTask.requestCullSignal();
+        // DivineMC end - Raytrace Entity Tracker
         // Purpur start - Burp delay
         if (this.burpDelay > 0 && --this.burpDelay == 0) {
             this.level().playSound(null, getX(), getY(), getZ(), SoundEvents.PLAYER_BURP, SoundSource.PLAYERS, 1.0F, this.level().random.nextFloat() * 0.1F + 0.9F);
@@ -1315,6 +1353,7 @@ public abstract class Player extends Avatar implements ContainerUser {
         if (this.hasContainerOpen()) {
             this.doCloseContainer();
         }
+        if (this.cullTask != null) this.cullTask.signalStop(); // DivineMC - Raytrace Entity Tracker
     }
 
     @Override