From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Kevin Raneri <kevin.raneri@gmail.com>
Date: Thu, 2 Jun 2022 19:54:09 -0500
Subject: [PATCH] Pufferfish: Entity TTL

Removed since Leaf 1.21.3, Paper 1.21.3 included it

Original license: GPL v3
Original project: https://github.com/pufferfish-gg/Pufferfish

diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 22d3d963dc9806643608d077324b27832641ce57..60fbed7a31fbeca07eae8ea6b0fb97705961bb7e 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -849,6 +849,12 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     }
 
     public void tick() {
+        // Pufferfish start - entity TTL
+        if (type != EntityType.PLAYER && type.ttl >= 0 && this.tickCount >= type.ttl) {
+            discard();
+            return;
+        }
+        // Pufferfish end - entity TTL
         this.baseTick();
     }
 
diff --git a/src/main/java/net/minecraft/world/entity/EntityType.java b/src/main/java/net/minecraft/world/entity/EntityType.java
index b2d8a858d8767bd6ca52e0b8db84757986c6ed61..f9440014ab2fe753c16b9383f5fffbb8adb76e79 100644
--- a/src/main/java/net/minecraft/world/entity/EntityType.java
+++ b/src/main/java/net/minecraft/world/entity/EntityType.java
@@ -317,6 +317,7 @@ public class EntityType<T extends Entity> implements FeatureElement, EntityTypeT
     private final int clientTrackingRange;
     private final int updateInterval;
     public boolean dabEnabled = false; // Pufferfish
+    public int ttl = -1; // Pufferfish
     @Nullable
     private String descriptionId;
     @Nullable
diff --git a/src/main/java/org/dreeam/leaf/config/modules/opt/EntityTTL.java b/src/main/java/org/dreeam/leaf/config/modules/opt/EntityTTL.java
new file mode 100644
index 0000000000000000000000000000000000000000..79875406800536e753de92d7e9e6613f0f563a55
--- /dev/null
+++ b/src/main/java/org/dreeam/leaf/config/modules/opt/EntityTTL.java
@@ -0,0 +1,59 @@
+package org.dreeam.leaf.config.modules.opt;
+
+import net.minecraft.core.registries.BuiltInRegistries;
+import net.minecraft.world.entity.EntityType;
+import org.dreeam.leaf.config.ConfigModules;
+import org.dreeam.leaf.config.EnumConfigCategory;
+
+import java.util.Locale;
+
+public class EntityTTL extends ConfigModules {
+
+    public String getBasePath() {
+        return EnumConfigCategory.PERF.getBaseKeyName() + ".entity-timeouts";
+    }
+
+    @Override
+    public void onLoaded() {
+        config.addCommentRegionBased(getBasePath(), """
+                These values define a entity's maximum lifespan. If an
+                entity is in this list and it has survived for longer than
+                that number of ticks, then it will be removed. Setting a value to
+                -1 disables this feature.""",
+                """
+                这些值定义了实体的最大生命周期.
+                如果实体存活时间超过指定的 tick 将被移除, 设置为 -1 可禁用此功能.""");
+
+        for (EntityType<?> entityType : BuiltInRegistries.ENTITY_TYPE) {
+            if (isFilteredEntity(entityType)) {
+                continue;
+            }
+
+            String type = EntityType.getKey(entityType).getPath().toUpperCase(Locale.ROOT);
+            entityType.ttl = config.getInt(getBasePath() + "." + type, -1);
+        }
+    }
+
+    // These entity types cannot be controlled by Entity TTL, and also should not
+    // So just filter them from the config
+    private boolean isFilteredEntity(EntityType<?> entityType) {
+        return entityType == EntityType.PLAYER
+                || entityType == EntityType.MINECART
+                // BlockAttachedEntity start
+                || entityType == EntityType.GLOW_ITEM_FRAME
+                || entityType == EntityType.ITEM_FRAME
+                || entityType == EntityType.PAINTING
+                || entityType == EntityType.LEASH_KNOT
+                // BlockAttachedEntity end
+                // Display start
+                || entityType == EntityType.BLOCK_DISPLAY
+                || entityType == EntityType.ITEM_DISPLAY
+                || entityType == EntityType.TEXT_DISPLAY
+                // Display end
+                || entityType == EntityType.END_CRYSTAL
+                || entityType == EntityType.FALLING_BLOCK
+                || entityType == EntityType.INTERACTION
+                || entityType == EntityType.MARKER
+                || entityType == EntityType.TNT;
+    }
+}