GraveProtocol

A Tower Defense game-mode plugin for Hytale, built by HaRo0.

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Overview

GraveProtocol turns a Hytale server world into a fully-featured tower defense experience. Players interact with Lynn, a custom NPC guide, to access the shop, prestige menu, and wave-based level progression. During a run they buy and upgrade towers to intercept waves of enemies before they reach their target — all driven by a data-driven asset pipeline that makes adding new content as simple as dropping a file into the right folder.

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Features

🗼 Tower Defense Gameplay

• Place towers on designated blocks by interacting with them.
• Towers automatically detect enemies within their attack range and fire each tick cycle.
• Two built-in attack archetypes:
  • AOE Attack — deals splash damage to all enemies in range.
  • Instant Damage (Magic) Attack — strikes a single target for precise, high damage.
• Towers can be purchased (if no tower exists on that block) or upgraded (if one already does) through a contextual in-game UI.

🧍 Lynn NPC

• An interactive NPC named Lynn placed in the hub world.
• Use (right-click) Lynn to open the Lynn Menu, your central control panel.

📋 Lynn Menu

The Grave Menu provides three actions:

Action	Description
Shop	Browse and unlock towers using earned currency.
Prestige	Advance to the next prestige tier once all levels are cleared.
Start Level	Launch the next wave level for your current prestige.

💰 Shop

• Lists every available tower with its unlock cost.
• Deducts currency from your player data on purchase.
• Already-owned towers are shown as [Unlocked] — no accidental double-purchases.

🏆 Prestige System

• Multiple prestige tiers, each with their own set of levels.
• Complete every level in your current prestige to unlock the Confirm Prestige button.
• Prestiging resets your level index and advances you to the next tier, then exits the active instance.
• A live UI shows: Current Prestige X / N, Levels Completed X / N, and a contextual status message.

🌊 Level & Wave System

• Levels and waves are defined entirely in asset files (GraveProtocol/Levels, GraveProtocol/Waves).
• Enemies (GraveProtocol/Enemies) are referenced by their model asset IDs and spawned per wave.
• Adding new levels or waves requires no code changes — drop a new asset file and reload.

🎮 In-Game HUD

• A persistent Tower Defense HUD displays live run information.
• Automatically refreshes when player data changes (e.g. after a purchase or prestige).

⚙️ Data-Driven Asset Pipeline

Asset Folder	Type	Description
GraveProtocol/Levels	Level	Level definitions linked to a prestige.
GraveProtocol/Waves	Wave	Wave definitions with enemy lists and timing.
GraveProtocol/Enemies	Enemy	Enemy archetypes (model, stats).
GraveProtocol/Towers	Tower	Tower definitions (attack type, range, cost, upgrades).
GraveProtocol/Prestiges	Prestige	Prestige tiers and their instance targets.

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Installation

1. Download the latest GraveProtocol-x.x.x.jar
2. Drop it into your Hytale server's mods/ folder.
3. Start (or restart) your server. The asset pack is bundled inside the jar and loaded automatically.

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Architecture (For Developers)

GraveProtocol is built on Hytale's ECS (Entity Component System) runtime.

Components

Component	Purpose
GPPlayerDataComponent	Stores per-player currency, unlocked towers, prestige & level index.
GPInstanceComponent	Tracks which tower-defense instance a player is currently in.
LynnComponent	Marks an entity as a Lynn NPC.
LynnAttackerComponent	Marks an entity as an enemy that towers should target.
TowerComponent	Block-level component storing the tower placed on that block.

Systems

System	Purpose
TowerAttackSystem	Tick-driven; queries all TowerComponent blocks, finds enemies in range, and delegates to the configured attack type.
LynnDamageSystem	Handles incoming damage events for Lynn Attacker entities.
LynnDeathSystem	Handles Lynn NPC death/removal.
LynnAttackerDeathSystem	Awards currency and cleans up attacker entities on death.

Interactions

Interaction ID	Trigger	Effect
OpenLynnMenu	Use on Lynn NPC	Opens LynnMenuUi.
OpenTowerMenu	Use on tower/empty block	Opens TowerPurchaseUi or TowerUpgradeUi.
EnterTowerDefenseInstance	Use on entry block	Teleports player into a tower-defense instance.

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Credit

The current map was made by xSpring check it out here.

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License

See LICENSE for details.

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Made with ❤️ by HaRo0