Add NPC Text script and enhance ScriptApi with entity type retrieval

scripts/npc_text.js

@@ -0,0 +1,61 @@
+var Entity = Java.type('net.minestom.server.entity.Entity');
+var Pos = Java.type('net.minestom.server.coordinate.Pos');
+var Vec = Java.type('net.minestom.server.coordinate.Vec');
+var Component = Java.type('net.kyori.adventure.text.Component');
+var NamedTextColor = Java.type('net.kyori.adventure.text.format.NamedTextColor');
+var BillboardConstraints = Java.type('net.minestom.server.entity.metadata.display.AbstractDisplayMeta.BillboardConstraints');
+var MinecraftServer = Java.type('net.minestom.server.MinecraftServer');
+
+server.log("NPC Text script initializing...");
+
+function spawnFixedNPC() {
+    var instanceManager = MinecraftServer.getInstanceManager();
+    var instances = instanceManager.getInstances();
+    
+    if (instances.isEmpty()) {
+        server.log("No instances found to spawn NPC!");
+        return;
+    }
+
+    var instance = instances.iterator().next();
+    var pos = new Pos(45.5, 65.0, -80.5);
+
+    // Retrieve EntityTypes via Java helper
+    var HUSK = server.getEntityType('HUSK');
+    var TEXT_DISPLAY = server.getEntityType('TEXT_DISPLAY');
+
+    if (HUSK == null || TEXT_DISPLAY == null) {
+        server.log("Failed to resolve EntityTypes! HUSK=" + HUSK + ", TEXT_DISPLAY=" + TEXT_DISPLAY);
+        return;
+    }
+
+    // 1. Create the "NPC" (Host) - Husk
+    var npc = new Entity(HUSK);
+    
+    // 2. Create the TextDisplay (Passenger)
+    var textDisplay = new Entity(TEXT_DISPLAY);
+    var meta = textDisplay.getEntityMeta();
+    
+    // Configure the text display
+    meta.setText(Component.text("I am a fixed NPC!").color(NamedTextColor.YELLOW));
+    meta.setBillboardRenderConstraints(BillboardConstraints.CENTER);
+    meta.setScale(new Vec(1.0, 1.0, 1.0));
+    meta.setBackgroundColor(0); // Transparent
+
+    // 3. Spawn entities
+    npc.setInstance(instance, pos).thenAccept(function() {
+        textDisplay.setInstance(instance, pos.add(0, 2.5, 0)).thenAccept(function() {
+            // 4. Make the TextDisplay ride the NPC
+            npc.addPassenger(textDisplay);
+            server.log("Spawned fixed NPC at " + pos);
+        });
+    });
+}
+
+// Run immediately
+try {
+    spawnFixedNPC();
+} catch (e) {
+    server.log("Error spawning NPC: " + e);
+    e.printStackTrace();
+}

src/main/java/net/jstom/Main.java

@@ -11,6 +11,7 @@ import net.minestom.server.event.server.ServerListPingEvent;
 import net.minestom.server.instance.InstanceContainer;
 import net.minestom.server.instance.InstanceManager;
 import net.minestom.server.instance.LightingChunk;
+import net.minestom.server.instance.Chunk;
 import net.minestom.server.instance.anvil.AnvilLoader;
 import net.minestom.server.instance.block.Block;
 import net.minestom.server.ping.Status;

src/main/java/net/jstom/script/ScriptApi.java

@@ -3,14 +3,32 @@ package net.jstom.script;
 import net.minestom.server.MinecraftServer;
 import net.minestom.server.event.Event;
 import net.minestom.server.event.EventNode;
+import net.minestom.server.entity.EntityType;
 import org.graalvm.polyglot.Value;
 
 import java.util.ArrayList;
 import java.util.List;
-import java.util.function.Consumer;
+import java.util.Map;
+import java.util.HashMap;
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
 
 public class ScriptApi {
     private final List<EventNode<Event>> registeredNodes = new ArrayList<>();
+    private static final Map<String, EntityType> entityTypes = new HashMap<>();
+
+    static {
+        for (Field field : EntityType.class.getFields()) {
+            if (Modifier.isStatic(field.getModifiers()) && Modifier.isPublic(field.getModifiers()) && field.getType() == EntityType.class) {
+                try {
+                    field.setAccessible(true);
+                    entityTypes.put(field.getName(), (EntityType) field.get(null));
+                } catch (IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
 
     /**
      * Registers an event listener from JavaScript.
@@ -64,4 +82,9 @@ public class ScriptApi {
     public void log(String message) {
         System.out.println("[JS] " + message);
     }
+
+    public EntityType getEntityType(String name) {
+        if (name == null) return null;
+        return entityTypes.get(name.toUpperCase());
+    }
 }