🧑‍🍳 VR Kitchen Defense Warfare

A Meta Quest VR wave-based shooter built with Unity 6000.3

📌 Project Overview

VR Kitchen Defense Warfare is a room-scale VR wave-based defense game developed with Unity 6000.3 and XR Interaction Toolkit, targeting Meta Quest devices.

The player stands inside a kitchen and defends a front desk against incoming monsters.
Enemies spawn from multiple locations, navigate intelligently using NavMesh, and attempt to reach the target desk.
The player grabs different food-themed weapons and eliminates enemies before losing all health.

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🎮 Core Gameplay

Player

• Starts with 10 HP
• Loses 1 HP when a monster reaches the front desk
• Uses VR controllers to:
  • Grab weapons
  • Shoot enemies
  • Pause / resume the game

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Weapons

Weapon	Fire Rate	Damage	Special
🥚 Egg Gun	Fast	Low	Single target
🍅 Tomato Gun	Medium	Medium	Balanced
🍉 Watermelon Gun	Slow	High	Area damage

• Weapons are grabbed via XR Grab Interactable
• Guns attach naturally to the hand
• Bullets are physics-based
• Gun and bullet collisions are separated using Layer Collision Matrix

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Enemies

• 4 different monster types
• Each monster:
  • Has 100 HP
  • Uses NavMeshAgent for obstacle-aware navigation
• Monsters spawn from 3 different spawn points
• Spawn system includes:
  • Random monster selection
  • Spawn-point occupancy checks (prevents overlapping)

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Waves

Wave	Enemy Count
1	15
2	20
3	30

• Game ends when:
  • All waves are cleared → Victory
  • Player HP reaches 0 → Failure

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🧭 Enemy Navigation

Enemies use Unity NavMesh for optimized pathfinding:

• NavMeshSurface baked on kitchen floor
• NavMeshAgent on each monster
• Dynamic repathing toward a target empty GameObject
• Automatically avoids:
  • Tables
  • Walls
  • Doorways
• Stable indoor navigation without jitter

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🖥️ UI & Scene Flow

Scenes

Scene Name	Description
MainMenu	Start / Quit
GameScene	Main gameplay
ResultScene	Win / Lose summary

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UI Flow

MainMenu
   ↓ Start
GameScene
   ↓ Win / Lose
ResultScene
   ↙ Restart   ↘ Main Menu

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🛠️ Technologies Used

• Unity 6000.3
• XR Interaction Toolkit
• Input System (New)
• NavMesh / NavMeshAgent
• Meta Quest SDK
• World Space XR UI

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✅ Solved Technical Challenges

• XR UI interaction via controller ray
• Stable grab & drop behavior (State-based selection)
• Trigger-based shooting using Input System
• Gun & bullet collision isolation
• Random monster spawning without overlap
• Reliable NavMesh-based enemy navigation
• Menu button pause without UI dependency
• Scene switching with safe timeScale handling
• Unity Inspector/Layout recovery during development

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🚀 Future Improvements

• Boss enemies
• Weapon upgrades
• Spatial sound effects
• Difficulty scaling
• Visual damage feedback
• Monster and weapon animations