/
Main.java
134 lines (117 loc) · 5.57 KB
/
Main.java
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package org.wwlib.spigotmc.HelloJavaScript;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.PlayerInventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.block.Block;
import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptEngineFactory;
// imports for GraalJS bindings
import javax.script.Bindings;
import javax.script.ScriptContext;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
public class Main extends JavaPlugin implements Listener {
private String NO_JAVASCRIPT_MESSAGE = "No JavaScript Engine available.";
protected ScriptEngine engine = null;
@Override
public void onEnable(){
//Fired when the server enables the plugin
this.getLogger().severe("HelloJavaScript plugin enabled.");
this.getLogger().severe("VM Details:");
// this.getLogger().severe(org.graalvm.home.Version.getCurrent().toString());
this.getLogger().severe(System.getProperty("java.vm.name"));
this.getLogger().severe(System.getProperty("java.vm.version"));
this.getLogger().severe(System.getProperty("java.vm.info"));
Thread currentThread = Thread.currentThread();
ClassLoader previousClassLoader = currentThread.getContextClassLoader();
currentThread.setContextClassLoader(getClassLoader());
try {
this.getServer().getPluginManager().registerEvents(this, this);
ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
this.engine = scriptEngineManager.getEngineByName("JavaScript");
if (this.engine == null) {
this.getLogger().severe(NO_JAVASCRIPT_MESSAGE);
this.getLogger().severe("Available engines include:");
List<ScriptEngineFactory> engines = scriptEngineManager.getEngineFactories();
for (ScriptEngineFactory f: engines) {
// System.out.println(f.getLanguageName()+" "+f.getEngineName()+" "+f.getNames().toString());
this.getLogger().severe(f.getLanguageName()+" "+f.getEngineName()+" "+f.getNames().toString());
}
} else {
this.getLogger().severe("Found a JavaScript engine.");
}
} catch (Exception e) {
e.printStackTrace();
this.getLogger().severe(e.getMessage());
} finally {
currentThread.setContextClassLoader(previousClassLoader);
}
}
@Override
public void onDisable(){
//Fired when the server stops and disables all plugins
}
@EventHandler
public void onPlayerJoin(PlayerJoinEvent evt) {
Player player = evt.getPlayer(); // The player who joined
PlayerInventory inventory = player.getInventory(); // The player's inventory
ItemStack itemstack = new ItemStack(Material.DIAMOND, 64); // A stack of diamonds
player.sendMessage("Welcome!");
// if (!inventory.contains(itemstack)) {
inventory.addItem(itemstack); // Adds a stack of diamonds to the player's inventory
player.sendMessage("We gave you some diamonds!");
// }
}
public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
if (label.equalsIgnoreCase("hellojs")) {
if (sender instanceof Player) {
Player player = (Player) sender;
player.sendMessage("Hello JavaScript!");
try {
// Bindings bindings = this.engine.createBindings();
// bindings.put("count", 3);
// bindings.put("name", "baeldung");
// String script = "var greeting='Hello ';" +
// "for(var i=count;i>0;i--) { " +
// "greeting+=name + ' '" +
// "}" +
// "greeting";
// Object bindingsResult = this.engine.eval(script, bindings);
// player.sendMessage(bindingsResult.toString());
String arg0 = args[0];
if (arg0.equalsIgnoreCase("cottage")) {
player.sendMessage("arg0 == cottage");
Location loc = player.getLocation();
loc.setY(loc.getY() + 5);
Block b = loc.getBlock();
b.setType(Material.DIAMOND_BLOCK);
} else if (arg0.equalsIgnoreCase("diamonds")) {
PlayerInventory inventory = player.getInventory(); // The player's inventory
ItemStack itemstackDiamonds = new ItemStack(Material.DIAMOND, 64); // A stack of diamonds
ItemStack itemstackWood = new ItemStack(Material.BIRCH_LOG, 64); // A stack of diamonds
player.sendMessage("Have some diamonds and wood!");
inventory.addItem(itemstackDiamonds);
inventory.addItem(itemstackWood);
}
} catch (Exception e) {
e.printStackTrace();
this.getLogger().severe(e.getMessage());
}
return true;
}
}
return false;
}
}