Tiny Algorithm: Flowchart Editor

Draw algorithms as flowcharts right in the Moodle text editor, run them step by step and turn them into code.

Features

• Visual editor: Declare, Assign, Input, Output, If, For, While, Do...While, Call, Return, Comment; several functions, undo / redo.
• Interpreter: Run / Step / Stop, console with input, variable watch, infinite-loop guard and clear error messages.
• Flowgorithm files: import and export real .fprg files.
• Code generation: Python, C, C++, Java, C#, JavaScript and Pascal.
• Editable images: the diagram is an SVG image that keeps its model; double-click to edit again. Zoom and per-diagram options included.
• Students edit and test: with filter_algorithm, students can change their own copy of a diagram in any content and run the teacher's tests.
• Tests from the solution: the teacher enters only the inputs; the expected outputs are computed from the teacher's solution.

What's new in 1.2.0

• Forums and assignments: in forum posts, assignment text and other content that Moodle cleans, the diagram disappeared after saving. It is now saved as an image file of the text, so it stays visible, can be edited again and, with filter_algorithm, stays interactive. Diagrams inserted with an older version come back after opening them in the editor and clicking Insert.
• Renaming a function also renames every call of it.
• All CSS classes carry the plugin name (tiny_algorithm-...), so they cannot clash with the theme.

Requirements

• Moodle 4.5 LTS to 5.3 (PHP as required by your Moodle version).
• Companion plugins (optional): filter_algorithm 1.2.0 (Run / Step and the student features for readers) and qtype_algorithm 1.2.0 (quiz question type with automatic grading).

Privacy

The editor and interpreter run in the browser; nothing is sent to external services. The diagram is stored in the text you save. The plugin keeps two display preferences (code and variable panels) and the student's own copy of an editable diagram in the browser's local storage and implements the Moodle Privacy API (no personal data stored).

Languages: English and Serbian (Latin and Cyrillic). Source, documentation and issue tracker: github.com/blagojevicboban/moodle-tiny_algorithm. Licensed under the GNU GPL v3 or later.