Easylang

Easylang is a simple open-source programming language with built-in graphical features and a user-friendly browser IDE that can be used also offline. It was developed to make learning to program as easy and accessible as possible. You can also use Easylang to write simple graphical programs that can be embedded in a web page.

# animate a pendulum
ang = 45
on animate
   clear
   move 50 50
   circle 1
   x = 50 + 40 * sin ang
   y = 50 + 40 * cos ang
   line x y
   circle 6
   vel += sin ang / 5
   ang += vel
end

Website

easylang.dev

easylang.online

chkas.github.io

Build in Linux and MacOS

Dependencies

MacOS: Xcode Command Line Tools

JDK, Emscripten

Download Emscripten WASM SDK and install it

curl -L https://github.com/emscripten-core/emsdk/archive/refs/heads/main.zip -o main.zip
unzip -q main.zip
mv emsdk-main emsdk

Install and activate a tested version

source emsdk/emsdk_env.sh
emsdk update ; emsdk list
# vers=latest
vers=3.1.51
emsdk install $vers ; emsdk activate $vers

Build and test

curl -L https://github.com/chkas/easylang/archive/refs/heads/main.zip -o main.zip
unzip -q main.zip
mv easylang-main easylang

The destination folder is ~/out/easylang. Needs Java for the closure-compiler.

source emsdk/emsdk_env.sh
( cd easylang/main ; make )

Test it locally

(cd ~/out/easylang/;python3 -m http.server)

localhost:8000/ide/

Build with Github Actions

github.com/chkas/chkas.github.io

Build native version

easylang/native/readme.md