Folia Support

.gitignore

@@ -10,6 +10,7 @@ javadoc
 Vault.jar
 /Vault.iml
 /target
+.idea
 
 #added by LRFLEW
 #feel free to remove

plugin.yml

@@ -4,6 +4,7 @@ description: ${project.description}
 authors: [cereal, Sleaker, mung3r]
 website: ${project.url}
 api-version: 1.13
+folia-supported: true
 
 main: ${mainClass}
 load: startup

pom.xml

@@ -5,6 +5,7 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<bukkitVersion>1.13.1-R0.1-SNAPSHOT</bukkitVersion>
+		<foliaVersion>1.19.4-R0.1-SNAPSHOT</foliaVersion>
 		<mainClass>${project.groupId}.${project.artifactId}</mainClass>
 		<api.version>1.7</api.version>
 	</properties>
@@ -59,6 +60,10 @@
 			<id>spigot-repo</id>
 			<url>https://hub.spigotmc.org/nexus/content/groups/public/</url>
 		</repository>
+		<repository>
+			<id>papermc</id>
+			<url>https://repo.papermc.io/repository/maven-public/</url>
+		</repository>
 		<repository>
 			<id>escapecraft-repo</id>
 			<url>http://dev.escapecraft.com/maven</url>
@@ -70,6 +75,12 @@
 	</repositories>
 
 	<dependencies>
+		<dependency>
+			<groupId>dev.folia</groupId>
+			<artifactId>folia-api</artifactId>
+			<version>${foliaVersion}</version>
+			<scope>provided</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.bukkit</groupId>
 			<artifactId>bukkit</artifactId>

src/net/milkbowl/vault/Vault.java

@@ -21,6 +21,7 @@
 import java.net.URLConnection;
 import java.util.Collection;
 import java.util.concurrent.Callable;
+import java.util.concurrent.TimeUnit;
 import java.util.logging.Logger;
 
 import net.milkbowl.vault.chat.Chat;
@@ -89,12 +90,13 @@ public class Vault extends JavaPlugin {
     private String currentVersionTitle = "";
     private ServicesManager sm;
     private Vault plugin;
+    private boolean folia;
 
     @Override
     public void onDisable() {
         // Remove all Service Registrations
         getServer().getServicesManager().unregisterAll(this);
-        Bukkit.getScheduler().cancelTasks(this);
+        schedulerCancelTasks(this);
     }
 
     @Override
@@ -104,6 +106,8 @@ public void onEnable() {
         currentVersionTitle = getDescription().getVersion().split("-")[0];
         currentVersion = Double.valueOf(currentVersionTitle.replaceFirst("\\.", ""));
         sm = getServer().getServicesManager();
+        folia = packagesExists("io.papermc.paper.threadedregions.scheduler.AsyncScheduler");
+
         // set defaults
         getConfig().addDefault("update-check", true);
         getConfig().options().copyDefaults(true);
@@ -117,7 +121,7 @@ public void onEnable() {
         getServer().getPluginManager().registerEvents(new VaultListener(), this);
         // Schedule to check the version every 30 minutes for an update. This is to update the most recent 
         // version so if an admin reconnects they will be warned about newer versions.
-        this.getServer().getScheduler().runTask(this, new Runnable() {
+        schedulerRunTask(this, new Runnable() {
 
             @Override
             public void run() {
@@ -131,7 +135,7 @@ public void run() {
                 }
                 perm.setDescription("Allows a user or the console to check for vault updates");
 
-                getServer().getScheduler().runTaskTimerAsynchronously(plugin, new Runnable() {
+                schedulerRunTaskTimerAsynchronously(plugin, new Runnable() {
 
                     @Override
                     public void run() {
@@ -421,6 +425,31 @@ private void infoCommand(CommandSender sender) {
         sender.sendMessage(String.format("[%s] Chat: %s [%s]", getDescription().getName(), chat == null ? "None" : chat.getName(), registeredChats));
     }
 
+    private void schedulerRunTask(Plugin plugin, Runnable runnable) {
+        if (folia) {
+            Bukkit.getGlobalRegionScheduler().execute(plugin, runnable);
+        } else {
+            Bukkit.getScheduler().runTask(plugin, runnable);
+        }
+    }
+
+    private void schedulerRunTaskTimerAsynchronously(Plugin plugin, Runnable runnable, long delay, long period) {
+        if (folia) {
+            Bukkit.getAsyncScheduler().runAtFixedRate(plugin, st -> runnable.run(), delay, period * 50L, TimeUnit.MILLISECONDS);
+        } else {
+            Bukkit.getScheduler().runTaskTimerAsynchronously(plugin, runnable, delay, period);
+        }
+    }
+
+    private void schedulerCancelTasks(Plugin plugin) {
+        if (folia) {
+            Bukkit.getAsyncScheduler().cancelTasks(plugin);
+            Bukkit.getGlobalRegionScheduler().cancelTasks(plugin);
+        } else {
+            Bukkit.getScheduler().cancelTasks(plugin);
+        }
+    }
+
     /**
      * Determines if all packages in a String array are within the Classpath
      * This is the best way to determine if a specific plugin exists and will be