Bottom Line

# 🧟‍♂️ BottomLine: Endless Zombie Defense **BottomLine** is a mobile-first, endless zombie tower defense game built with **Phaser 3** and packaged for Android using **Capacitor**. Defend your base, upgrade towers, defeat bosses, and survive increasingly difficult waves of zombies. --- ## 🎮 Gameplay Overview * Zombies advance through **multiple lanes** * You **place and upgrade towers** to stop them * **Boss enemies** unlock additional lanes * Difficulty scales endlessly --- ## 🧠 Core Mechanics ### 🛣️ Lane System * Up to **9 lanes** * Unlocked progressively: * Level 1 → 1 lane * Level 2 → 3 lanes * Level 3 → 5 lanes * Level 4 → 7 lanes * Level 5 → 9 lanes --- ### 👾 Enemy Types | Type | Behavior | | ------ | ----------------------------- | | Walker | Balanced base zombie | | Runner | Fast, low HP | | Tank | Slow, high HP, attacks towers | | Boss | High HP, unlocks new lanes | --- ### 🏗️ Towers | Level | Type | Description | | ----- | ------------- | ------------------------------ | | 1 | Basic | Balanced attack | | 2 | Rapid | Faster firing | | 3 | Heavy | High damage | | 4 | Explosive | Splash damage (AOE) | | 5 | Laser *(WIP)* | Planned continuous beam weapon | --- ### 💰 Economy * Earn **tokens** from kills * Use tokens to: * Upgrade towers * Bosses give **bonus rewards** --- ### 🧟 Boss System Bosses appear at increasing thresholds: ``` 50 → 100 → 200 → 400 → ... ``` Defeating a boss: * Unlocks more lanes * Increases difficulty --- ## 🖥️ Screens ### ▶️ Start Screen * Game title * Instructions * Start button ### 💥 Gameplay * Real-time tower defense * Lane-based combat * Scaling difficulty ### ☠️ Game Over Screen * Final stats: * Kills * Tokens earned * Bosses defeated * Retry or return to menu --- ## 🛠️ Tech Stack * **Phaser 3** – Game engine * **JavaScript (ES Modules)** * **Capacitor** – Android packaging * **Android Studio** – Build & APK generation --- ## 📱 Android Build ### Requirements * Node.js * Android Studio * Java JDK --- ### Install dependencies ```bash npm install ``` --- ### Build web assets ```bash npm run build ``` --- ### Sync with Capacitor ```bash npx cap sync android ``` --- ### Open in Android Studio ```bash npx cap open android ``` --- ### Build APK In Android Studio: ``` Build → Build APK ``` --- ## 🎨 Assets * Custom zombie sprites (walk + death animations) * Tower sprites (5 levels) * Explosion effects * Forest/apocalypse background * Custom splash screen and launcher icons --- ## 📦 Project Structure ``` src/ ├── main.js ├── GameScene.js ├── StartScene.js ├── SummaryScene.js android/ └── Capacitor Android project public/assets/ ├── zombies/ ├── towers/ ├── effects/ ``` --- ## ⚙️ Key Systems * Lane-based enemy movement * Enemy lane switching (random adjacent) * Tower targeting with rotation delay * Cooldown-based firing system * Splash damage calculation * Boss progression logic * Token economy system --- ## 🚧 Roadmap Planned features: * 🔫 Laser Tower (Level 5) * 🧪 More zombie types: * Spitter (ranged) * Mutant (mini-boss) * 🌊 Wave system * 🔊 Sound effects & music * 💾 Save / High score system * 📊 Game balancing improvements * 🏆 Achievements --- ## 🐞 Known Issues * UI scaling may vary across devices * Balance tuning is ongoing * Some animations may need optimization --- ## 🙌 Contributing This project is currently in active development. Feel free to fork, test, and suggest improvements. --- ## 📜 License TBD --- ## 👤 Author **Erwin Galang** --- ## 🎯 Final Note BottomLine is built as a **fun, scalable tower defense foundation** with room for expansion into a full mobile release. Survive as long as you can. The zombies don’t stop.