From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 9 Aug 2020 16:44:48 -0500
Subject: [PATCH] Incremental player saving

Ported to Yatopia and 1.16.1 by MrIvanPlays
Co-authored-by: MrIvanPlays <ivan@mrivanplays.com>

diff --git a/src/main/java/dev/tr7zw/yatopia/YatopiaConfig.java b/src/main/java/dev/tr7zw/yatopia/YatopiaConfig.java
index 40f0bc601f0d11b0bfb15162fce17aaa70991f14..8b659311e3b6f45c0ee798efb6adb85cdeb710b0 100644
--- a/src/main/java/dev/tr7zw/yatopia/YatopiaConfig.java
+++ b/src/main/java/dev/tr7zw/yatopia/YatopiaConfig.java
@@ -235,4 +235,15 @@ public class YatopiaConfig {
 	fixFallDistance = getBoolean("settings.fixFallDistance", false);
     }
 
+    public static int maxPlayerAutoSavePerTick = 10;
+    public static int playerAutoSaveRate = -1;
+    private static void incrementalPlayerdataSaving() {
+        playerAutoSaveRate = getInt("settings.player-auto-save-rate", -1);
+        maxPlayerAutoSavePerTick = getInt("settings.max-player-auto-save-per-tick", -1);
+        if (maxPlayerAutoSavePerTick == -1) { // -1 Automatic / "Recommended"
+            // 10 should be safe for everyone unless you mass spamming player auto save
+            maxPlayerAutoSavePerTick = (playerAutoSaveRate == -1 || playerAutoSaveRate > 100) ? 10 : 20;
+        }
+    }
+
 }
\ No newline at end of file
diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index 597419c23721059378943970b55d7a0dcb535037..f6ce27a5d1a44b2c6ec42842d51cb769138862f5 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -43,6 +43,7 @@ import org.bukkit.inventory.MainHand;
 public class EntityPlayer extends EntityHuman implements ICrafting {
 
     private static final Logger LOGGER = LogManager.getLogger();
+    public long lastSave = MinecraftServer.currentTick; // Yatopia
     public PlayerConnection playerConnection;
     public NetworkManager networkManager; // Paper
     public final MinecraftServer server;
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 26ee6e9219059c9f7175148e934d2adec2b336a0..f3e67e96bea9059aad60c896d7f376f727a5a158 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1294,9 +1294,15 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
         //if (autosavePeriod > 0 && this.ticks % autosavePeriod == 0) { // CraftBukkit // Paper - move down
             //MinecraftServer.LOGGER.debug("Autosave started"); // Paper
             serverAutoSave = (autosavePeriod > 0 && this.ticks % autosavePeriod == 0); // Paper
+            // Yatopia start
+            int playerSaveInterval = dev.tr7zw.yatopia.YatopiaConfig.playerAutoSaveRate;
+            if (playerSaveInterval < 0) {
+                playerSaveInterval = autosavePeriod;
+            }
+            // Yatopia end
             //this.methodProfiler.enter("save"); // Akarin - remove caller
-            if (autosavePeriod > 0 && this.ticks % autosavePeriod == 0) { // Paper
-            this.playerList.savePlayers();
+            if (playerSaveInterval > 0) { // Yatopia
+            this.playerList.savePlayers(playerSaveInterval); // Yatopia
             }// Paper
             // Paper start
             for (WorldServer world : getWorlds()) {
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index c10a1d15bcfe0cb1c2ff6ee7f2881bc2040bcd1d..1dfd274e3af26792d5da88c59c0ebc71d8b9feb4 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -484,6 +484,7 @@ public abstract class PlayerList {
     protected void savePlayerFile(EntityPlayer entityplayer) {
         if (!entityplayer.getBukkitEntity().isPersistent()) return; // CraftBukkit
         if (!entityplayer.didPlayerJoinEvent) return; // Paper - If we never fired PJE, we disconnected during login. Data has not changed, and additionally, our saved vehicle is not loaded! If we save now, we will lose our vehicle (CraftBukkit bug)
+        entityplayer.lastSave = MinecraftServer.currentTick; // Yatopia
         this.playerFileData.save(entityplayer);
         ServerStatisticManager serverstatisticmanager = (ServerStatisticManager) entityplayer.getStatisticManager(); // CraftBukkit
 
@@ -1130,10 +1131,21 @@ public abstract class PlayerList {
     }
 
     public void savePlayers() {
+        // Yatopia start - incremental player saving
+        savePlayers(null);
+    }
+    public void savePlayers(Integer interval) {
         MCUtil.ensureMain("Save Players" , () -> { // Paper - Ensure main
         MinecraftTimings.savePlayers.startTiming(); // Paper
+        int numSaved = 0;
+        long now = MinecraftServer.currentTick;
         for (int i = 0; i < this.players.size(); ++i) {
-            this.savePlayerFile((EntityPlayer) this.players.get(i));
+            EntityPlayer entityplayer = this.players.get(i);
+            if (interval == null || now - entityplayer.lastSave >= interval) {
+                this.savePlayerFile(entityplayer);
+                if (interval != null && ++numSaved <= dev.tr7zw.yatopia.YatopiaConfig.maxPlayerAutoSavePerTick) { break; }
+                }
+            // Yatopia end
         }
         MinecraftTimings.savePlayers.stopTiming(); // Paper
         return null; }); // Paper - ensure main