Add online_mode and velocity_secret config options

scripts/elytra_boost.js

@@ -0,0 +1,52 @@
+const Material = Java.type('net.minestom.server.item.Material');
+const Sound = Java.type('net.kyori.adventure.sound.Sound');
+const SoundEvent = Java.type('net.minestom.server.sound.SoundEvent');
+const Entity = Java.type('net.minestom.server.entity.Entity');
+const EntityType = Java.type('net.minestom.server.entity.EntityType');
+const Duration = Java.type('java.time.Duration');
+
+server.log("Vanilla Elytra Boost loaded.");
+
+server.on('net.minestom.server.event.player.PlayerUseItemEvent', (event) => {
+    const player = event.getPlayer();
+    const item = event.getItemStack();
+
+    // 1. Validate Condition
+    if (item.material().name() !== "minecraft:firework_rocket") return;
+    if (!player.isFlyingWithElytra()) return;
+
+    // 2. Consume Item (if not creative)
+    if (player.getGameMode().name() !== "CREATIVE") {
+        player.setItemInHand(event.getHand(), item.withAmount(item.amount() - 1));
+    }
+
+    // 3. Spawn Firework Rocket
+    // The entity itself handles the boosting physics in Minestom/Client
+    const rocket = new Entity(EntityType.fromKey("minecraft:firework_rocket"));
+    const meta = rocket.getEntityMeta();
+    
+    meta.setFireworkInfo(item);
+    meta.setShooter(player);
+    
+    // Spawn at player position
+    rocket.setInstance(player.getInstance(), player.getPosition());
+    
+    // Set rocket velocity to fly in look direction
+    const direction = player.getPosition().direction();
+    rocket.setVelocity(direction.mul(1.5)); // Adjust rocket speed if needed
+    
+    // Cleanup: Remove rocket after lifetime (e.g., 1.5s for duration 3)
+    // Vanilla duration calculation is roughly (FlightDuration + 1) * 10 + random ticks
+    // 1.5s is a safe average for Duration 3
+    rocket.scheduleRemove(Duration.ofMillis(1500));
+
+    // 4. Play Sound
+    const launchSound = Sound.sound(
+        SoundEvent.fromKey("minecraft:entity.firework_rocket.launch"), 
+        Sound.Source.PLAYER, 
+        3.0, 
+        1.0
+    );
+    player.getViewers().forEach(v => v.playSound(launchSound, player.getPosition()));
+    player.playSound(launchSound);
+});