Recreating Super Mario World in Godot

Introduction

• Presenter: Wye
• Goal: Recreate Super Mario World from scratch in the Godot engine
• Motivation: Familiarity and investment in Super Mario World
• Experience: Background in ROM hacking Super Mario World

Project Setup

• Start with creating a project folder in Godot
• Chose to begin by building a level instead of title screen or file select
• Node structure: Every element in Godot is a node, level built as a 2D node with a TileMap node attached
• Leveraged Mario hacking experience to create tileset

Creating Tiles and Level

• Utilized existing tilesets and personal level editor experience
• Process: Built a dummy level, took a screenshot to create the tileset
• Collision creation for each tile, tedious but essential
• Added a camera node and script for navigation

Adding Mario (Player Character)

• Added CharacterBody2D node for Mario
• Initial graphics: Basic sprite sheet for Mario
• Animation: Used AnimatedSprite2D for basic animations (idle, walk, run, jump, etc.)
• Player physics: Needed to match original Mario World physics

Understanding Speed and Physics

• SNES speed: Measured in subpixels per frame (1 pixel = 16 subpixels)
• Godot speed: Measured in pixels per second, using delta time to maintain consistency
• Adjusted Mario’s maximum speeds (walk, run, P speed)
• Implemented acceleration to match original game feel
• Tested and iterated to get it as close to the original as possible
• Noted intricacies in Mario's physics from original game

Jump Mechanics

• Basic logic: Upwards movement on jump, downward acceleration by gravity
• Adjusted gravity while holding jump button for higher jumps
• Implemented spin jump
• Handling slopes: Different types (gradual to very steep) and their physics

Advanced Player Physics

• Walking on slopes, adjusting speed and acceleration
• Slide mechanics on slopes, different behavior based on slope steepness
• Detailed explorations of Mario's behavior in various states

Further Developments

• Future improvements: Water physics, climbing, flying, Yoshi, powerups
• Background creation: Used parallax layers and TileMap node for backgrounds
• Added sound effects for actions like jumping

Conclusion

• Reflects on learnings and progress made
• Plans for next steps: Adding coins, powerups, blocks, and enemies
• Encourages viewer engagement and ends on a lighthearted note