Creating a Simple Mobile Game Tutorial

Introduction

• Objective: Create a simple game on mobile
• Skills learned: Player movement, simple AI for enemies, and other basic game development concepts
• Target audience: No previous game development experience needed, but useful for those with some experience

Setting Up the Development Environment

• Screen Mirroring: Mirror screen to PC for easier development using mouse and keyboard
• Download Godot Engine: Use the 4th version from the Play Store (early access, may have bugs)
• Setup Permissions: Provide all file access permissions when opening the application

Initial Project Setup

• Starting a New Project:
  • Open Godot, create a new project
  • Name the project (e.g., "Tutorial_Mobile")
  • Choose default path and renderer (mobile recommended)
• Understanding the Interface:
  • Top bar with different environments: 2D, 3D, Script, Asset Library
  • File system on the bottom left

Creating the First Scene

• Setting Up Scene:
  • Create a 2D scene and rename it as "Main"
  • Save the scene
• Creating Walls:
  • Add StaticBody2D and attach CollisionShape2D
  • Use RectangleShape2D for collision shape
  • Duplicate and create top and bottom walls

Adding the Player

• Setting Up the Player Object:
  • Add RigidBody2D and attach CollisionShape2D and Sprite
  • Download a white image for the sprite
  • Set gravity scale to 0 to prevent falling
• Adding Script for Movement:
  • Create and attach script to the player object
  • Use UI (Control node with buttons) for player movement (up and down)
  • Connect button press signals to player movement functions

Adding the Ball

• Setting Up the Ball Object:
  • Add CharacterBody2D with CollisionShape2D and Sprite
  • Ensure it has a PhysicsMaterial2D to enable bouncing
• Adding Script for Ball Movement:
  • Set direction and speed variables
  • Handle collision with player and enemy

Adding the Enemy

• Duplicate Player Object: Rename it to Enemy
• Script for Simple AI:
  • Follow the ball’s Y position
• Prevent Unnecessary Movements: Set mass of player and enemy high to prevent getting pushed

Handling Collision and Scoring

• Collision Logic:
  • Detect collision using groups (e.g., enemy_or_player)
  • Make the ball bounce on collision
• Screen Boundaries:
  • Use VisibilityNotifier2D to detect when the ball exits the screen
  • Restart the scene when the ball leaves the screen

Improving the Game Experience

• Adjusting Screen Settings: Ensure the aspect ratio is maintained in the project settings
• Final Adjustments:
  • Fine-tuning the mass and bounce values for smoother gameplay
  • Potential improvements: better player movement, scoring system, collision detection

Conclusion

• Result: A basic, functioning mobile game
• Future Scope: Potential for improvements and additional features based on user feedback