README.md

• Ruby-Platformer
  • Prerequisites
  • Install SDL3 gem
  • Run tutorials
  • My tools version
  • Key operation
  • Tutorial sources
  • SDL librarys
  • Other SDL game tutorial platfromer project
  • Other project

Ruby-Platformer

Tutorial: Writing a 2D Platform Game in Ruby language with SDL3 / SDL_ttf.
This repository has been inherited from Nim-Platformer , LuaJIT-Platformer , Nelua-Platformer and Zig-Platformer project.

• Document
  English: https://hookrace.net/blog/writing-a-2d-platform-game-in-nim-with-sdl2/
  Japanese: https://postd.cc/writing-a-2d-platform-game-in-nim-with-sdl2/

Skin database https://ddnet.org/skins

Now work in progress.

Prerequisites

---

1. Windows OS
2. Ruby3.x

Install SDL3 gem

---

gem install sdl3-bindings

Run tutorials

---

git clone https://github.com/dinau/ruby-platformer
cd ruby-platformer/tutorial

ruby part8.rb   # It can specify from part1.rb to part8.rb

or double click part8.rbw with file explorer.

My tools version

---

• Windows11
• Ruby 3.4.4

Key operation

---

Key	Function
Up,Space, J, K	Jump
Left, A, H	Left
Right, D, L	Right
R	Restart
Q	Quit, Esc

Tutorial sources

---

Part1	Part2	Part3 (Showing item)	Part4	Part5 (Moving item)	Part6	Part7	Part8 (Almost completed)	Part9
part1								-

SDL librarys

---

https://github.com/libsdl-org/SDL/releases

Other SDL game tutorial platfromer project

---

Language		Project
Nim	Compiler	Nim-Platformer / sdl3_nim
LuaJIT	Script	LuaJIT-Platformer
Nelua	Compiler	NeLua-Platformer
Zig	Compiler	Zig-Platformer
C3	Compiler	C3-Platformer WIP
Ruby	Script	Ruby-Platformer WIP

Other project

---

Language		Project
Nim	Compiler	ImGuin, Nimgl_test, Nim_implot
Lua	Script	LuaJITImGui
Zig, C lang.	Compiler	Dear_Bindings_Build
Zig	Compiler	ImGuinZ
NeLua	Compiler	NeLuaImGui
Python	Script	DearPyGui for 32bit WindowsOS Binary
Ruby	Script	IgRuby-Examples