From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: kickash32 <kickash32@gmail.com>
Date: Mon, 3 Jun 2019 02:02:39 -0400
Subject: [PATCH] Implement alternative item-despawn-rate


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 3cd8895adecd345c3bdfb8b5e3e9fdf0ef9097db..be4a36df28d4f16727daad1270d5c3a84ae94613 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -1,8 +1,13 @@
 package com.destroystokyo.paper;
 
+import java.util.EnumMap;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.configuration.ConfigurationSection;
 import org.bukkit.configuration.file.YamlConfiguration;
 import org.spigotmc.SpigotWorldConfig;
 
@@ -450,5 +455,53 @@ public class PaperWorldConfig {
     private void viewDistance() {
         this.noTickViewDistance = this.getInt("viewdistances.no-tick-view-distance", -1);
     }
+
+    public boolean altItemDespawnRateEnabled;
+    public Map<Material, Integer> altItemDespawnRateMap;
+    private void altItemDespawnRate() {
+        String path = "alt-item-despawn-rate";
+
+        altItemDespawnRateEnabled = getBoolean(path + ".enabled", false);
+
+        Map<Material, Integer> altItemDespawnRateMapDefault = new EnumMap<>(Material.class);
+        altItemDespawnRateMapDefault.put(Material.COBBLESTONE, 300);
+        for (Material key : altItemDespawnRateMapDefault.keySet()) {
+            config.addDefault("world-settings.default." + path + ".items." + key, altItemDespawnRateMapDefault.get(key));
+        }
+
+        Map<String, Integer> rawMap = new HashMap<>();
+        try {
+            ConfigurationSection mapSection = config.getConfigurationSection("world-settings." + worldName + "." + path + ".items");
+            if (mapSection == null) {
+                mapSection = config.getConfigurationSection("world-settings.default." + path + ".items");
+            }
+            for (String key : mapSection.getKeys(false)) {
+                int val = mapSection.getInt(key);
+                rawMap.put(key, val);
+            }
+        }
+        catch (Exception e) {
+            logError("alt-item-despawn-rate was malformatted");
+            altItemDespawnRateEnabled = false;
+        }
+
+        altItemDespawnRateMap = new EnumMap<>(Material.class);
+        if (!altItemDespawnRateEnabled) {
+            return;
+        }
+
+        for(String key : rawMap.keySet()) {
+            try {
+                altItemDespawnRateMap.put(Material.valueOf(key), rawMap.get(key));
+            } catch (Exception e) {
+                logError("Could not add item " + key + " to altItemDespawnRateMap: " + e.getMessage());
+            }
+        }
+        if(altItemDespawnRateEnabled) {
+            for(Material key : altItemDespawnRateMap.keySet()) {
+                log("Alternative item despawn rate of " + key + ": " + altItemDespawnRateMap.get(key));
+            }
+        }
+    }
 }
 
diff --git a/src/main/java/net/minecraft/world/entity/item/ItemEntity.java b/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
index 9ee1dc89dd4c6b9453e1f6f92208d454877d23c9..e0c13a112c95eed9867d4608e18dc797b0c9c9cf 100644
--- a/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
+++ b/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
@@ -175,7 +175,7 @@ public class ItemEntity extends Entity {
                 }
             }
 
-            if (!this.level.isClientSide && this.age >= level.spigotConfig.itemDespawnRate) { // Spigot
+            if (!this.level.isClientSide && this.age >= this.getDespawnRate()) { // Spigot // Paper
                 // CraftBukkit start - fire ItemDespawnEvent
                 if (org.bukkit.craftbukkit.event.CraftEventFactory.callItemDespawnEvent(this).isCancelled()) {
                     this.age = 0;
@@ -199,7 +199,7 @@ public class ItemEntity extends Entity {
         this.lastTick = MinecraftServer.currentTick;
         // CraftBukkit end
 
-        if (!this.level.isClientSide && this.age >= level.spigotConfig.itemDespawnRate) { // Spigot
+        if (!this.level.isClientSide && this.age >= this.getDespawnRate()) { // Spigot // Paper
             // CraftBukkit start - fire ItemDespawnEvent
             if (org.bukkit.craftbukkit.event.CraftEventFactory.callItemDespawnEvent(this).isCancelled()) {
                 this.age = 0;
@@ -559,9 +559,16 @@ public class ItemEntity extends Entity {
 
     public void makeFakeItem() {
         this.setNeverPickUp();
-        this.age = level.spigotConfig.itemDespawnRate - 1; // Spigot
+        this.age = this.getDespawnRate() - 1; // Spigot
     }
 
+    // Paper start
+    public int getDespawnRate(){
+        org.bukkit.Material material = this.getItem().getBukkitStack().getType();
+        return level.paperConfig.altItemDespawnRateMap.getOrDefault(material, level.spigotConfig.itemDespawnRate);
+    }
+    // Paper end
+
     public float getSpin(float tickDelta) {
         return ((float) this.getAge() + tickDelta) / 20.0F + this.bobOffs;
     }