DivineMC/divinemc-server/minecraft-patches/features/0029-Optimize-Raids.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: NONPLAYT <76615486+NONPLAYT@users.noreply.github.com>
Date: Wed, 10 Dec 2025 22:47:51 +0300
Subject: [PATCH] Optimize Raids


diff --git a/net/minecraft/server/level/ServerLevel.java b/net/minecraft/server/level/ServerLevel.java
index 857a1ac427644a1f24a8564041ba3f41da540ef4..477cb54c89b59812af74758c841fb714a39bf6c5 100644
--- a/net/minecraft/server/level/ServerLevel.java
+++ b/net/minecraft/server/level/ServerLevel.java
@@ -229,6 +229,7 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
     public boolean hasEntityMoveEvent; // Paper - Add EntityMoveEvent
     private final alternate.current.wire.WireHandler wireHandler = new alternate.current.wire.WireHandler(this); // Paper - optimize redstone (Alternate Current)
     public boolean hasRidableMoveEvent = false; // Purpur - Ridables
+    public net.minecraft.world.item.ItemStack ominousBanner; // DivineMC - Optimize Raids
 
     @Override
     public @Nullable LevelChunk getChunkIfLoaded(int x, int z) {
@@ -728,6 +729,7 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
         // Paper end - rewrite chunk system
         this.getCraftServer().addWorld(this.getWorld()); // CraftBukkit
         this.preciseTime = this.serverLevelData.getDayTime(); // Purpur - Configurable daylight cycle
+        this.ominousBanner = Objects.requireNonNullElse(this.registryAccess(), net.minecraft.core.RegistryAccess.EMPTY).lookup(Registries.BANNER_PATTERN).map(Raid::getOminousBannerInstance).orElse(null); // DivineMC - Optimize Raids
     }
 
     // Paper start
diff --git a/net/minecraft/world/entity/raid/Raid.java b/net/minecraft/world/entity/raid/Raid.java
index 8aa049d80cf74fb7ea525e0dc648741ddc788e3e..27c469462d54b6a8cf0b42b9d6ccacdc9488e556 100644
--- a/net/minecraft/world/entity/raid/Raid.java
+++ b/net/minecraft/world/entity/raid/Raid.java
@@ -127,6 +127,7 @@ public class Raid {
     private Raid.RaidStatus status;
     private int celebrationTicks;
     private Optional<BlockPos> waveSpawnPos = Optional.empty();
+    private boolean isBarDirty; // DivineMC - Optimize Raids
 
     public Raid(BlockPos center, Difficulty difficulty) {
         this.active = true;
@@ -279,6 +280,12 @@ public class Raid {
     }
 
     public void tick(ServerLevel level) {
+        // DivineMC start - Optimize Raids
+        if (this.isBarDirty) {
+            this.raidEvent.setProgress(Mth.clamp(this.getHealthOfLivingRaiders() / this.totalHealth, 0.0F, 1.0F));
+            this.isBarDirty = false;
+        }
+        // DivineMC end - Optimize Raids
         if (!this.isStopped()) {
             if (this.status == Raid.RaidStatus.ONGOING) {
                 boolean flag = this.active;
@@ -609,7 +616,7 @@ public class Raid {
     }
 
     public void updateBossbar() {
-        this.raidEvent.setProgress(Mth.clamp(this.getHealthOfLivingRaiders() / this.totalHealth, 0.0F, 1.0F));
+        this.isBarDirty = true; // DivineMC - Optimize Raids
     }
 
     public float getHealthOfLivingRaiders() {
diff --git a/net/minecraft/world/entity/raid/Raider.java b/net/minecraft/world/entity/raid/Raider.java
index b03faa7600f182a12c3a739deefc38028cf45615..fd7ee7d014b696c354357c871b546b2fb3859294 100644
--- a/net/minecraft/world/entity/raid/Raider.java
+++ b/net/minecraft/world/entity/raid/Raider.java
@@ -43,9 +43,25 @@ import org.jspecify.annotations.Nullable;
 
 public abstract class Raider extends PatrollingMonster {
     protected static final EntityDataAccessor<Boolean> IS_CELEBRATING = SynchedEntityData.defineId(Raider.class, EntityDataSerializers.BOOLEAN);
-    static final Predicate<ItemEntity> ALLOWED_ITEMS = item -> !item.hasPickUpDelay()
-        && item.isAlive()
-        && ItemStack.matches(item.getItem(), Raid.getOminousBannerInstance(item.registryAccess().lookupOrThrow(Registries.BANNER_PATTERN)));
+    // DivineMC start - Optimize Raids
+    static final Predicate<ItemEntity> ALLOWED_ITEMS = (itemEntity) -> {
+        ItemStack ominousBanner = ((ServerLevel) itemEntity.level()).ominousBanner;
+        if (ominousBanner == null) {
+            ominousBanner = Raid.getOminousBannerInstance(itemEntity.registryAccess().lookupOrThrow(Registries.BANNER_PATTERN));
+        }
+
+        return !itemEntity.hasPickUpDelay() && itemEntity.isAlive() &&
+            ItemStack.matches(itemEntity.getItem(), ominousBanner);
+    };
+
+    private ItemStack getOminousBanner(net.minecraft.core.HolderGetter<net.minecraft.world.level.block.entity.BannerPattern> bannerPatternLookup) {
+        ItemStack ominousBanner = ((ServerLevel) this.level()).ominousBanner;
+        if (ominousBanner == null) {
+            ominousBanner = Raid.getOminousBannerInstance(bannerPatternLookup);
+        }
+        return ominousBanner;
+    }
+    // DivineMC end - Optimize Raids
     private static final int DEFAULT_WAVE = 0;
     private static final boolean DEFAULT_CAN_JOIN_RAID = false;
     protected @Nullable Raid raid;
@@ -148,7 +164,7 @@ public abstract class Raider extends PatrollingMonster {
     public boolean isCaptain() {
         ItemStack itemBySlot = this.getItemBySlot(EquipmentSlot.HEAD);
         boolean flag = !itemBySlot.isEmpty()
-            && ItemStack.matches(itemBySlot, Raid.getOminousBannerInstance(this.registryAccess().lookupOrThrow(Registries.BANNER_PATTERN)));
+            && ItemStack.matches(itemBySlot, getOminousBanner(this.registryAccess().lookupOrThrow(Registries.BANNER_PATTERN))); // DivineMC - Optimize Raids
         boolean isPatrolLeader = this.isPatrolLeader();
         return flag && isPatrolLeader;
     }
@@ -211,7 +227,7 @@ public abstract class Raider extends PatrollingMonster {
         boolean flag = this.hasActiveRaid() && this.getCurrentRaid().getLeader(this.getWave()) != null;
         if (this.hasActiveRaid()
             && !flag
-            && ItemStack.matches(item, Raid.getOminousBannerInstance(this.registryAccess().lookupOrThrow(Registries.BANNER_PATTERN)))) {
+            && ItemStack.matches(item, getOminousBanner(this.registryAccess().lookupOrThrow(Registries.BANNER_PATTERN)))) { // DivineMC - Optimize Raids
             // Paper start - EntityPickupItemEvent fixes
             if (org.bukkit.craftbukkit.event.CraftEventFactory.callEntityPickupItemEvent(this, entity, 0, false).isCancelled()) {
                 return;
@@ -395,6 +411,16 @@ public abstract class Raider extends PatrollingMonster {
                 && !this.cannotPickUpBanner();
         }
 
+        // DivineMC start - Optimize Raids
+        private ItemStack getOminousBanner(net.minecraft.core.HolderGetter<net.minecraft.world.level.block.entity.BannerPattern> bannerPatternLookup) {
+            ItemStack ominousBanner = ((ServerLevel) this.mob.level()).ominousBanner;
+            if (ominousBanner == null) {
+                ominousBanner = Raid.getOminousBannerInstance(bannerPatternLookup);
+            }
+            return ominousBanner;
+        }
+        // DivineMC end - Optimize Raids
+
         private boolean cannotPickUpBanner() {
             if (!getServerLevel(this.mob).getGameRules().get(net.minecraft.world.level.gamerules.GameRules.MOB_GRIEFING, this.mob.level().purpurConfig.pillagerMobGriefingOverride)) return true; // Paper - respect game and entity rules for picking up items // Purpur - Add mobGriefing override to everything affected
             if (!this.mob.hasActiveRaid()) {
@@ -404,7 +430,7 @@ public abstract class Raider extends PatrollingMonster {
             } else if (!this.mob.canBeLeader()) {
                 return true;
             } else if (ItemStack.matches(
-                this.mob.getItemBySlot(EquipmentSlot.HEAD), Raid.getOminousBannerInstance(this.mob.registryAccess().lookupOrThrow(Registries.BANNER_PATTERN))
+                this.mob.getItemBySlot(EquipmentSlot.HEAD), getOminousBanner(this.mob.registryAccess().lookupOrThrow(Registries.BANNER_PATTERN)) // DivineMC - Optimize Raids
             )) {
                 return true;
             } else {