Raycaster: Fake 3D From a Flat Map
Cast rays across a 2D map and watch solid 3D walls rise out of the math, the exact trick that made Wolfenstein and Doom possible, rendered as frames you can print and replay.
What you'll be able to build
Cast rays across a 2D map and watch solid 3D walls rise out of the math, the exact trick that made Wolfenstein and Doom possible, rendered as frames you can print and replay. Along the way you pick up real, transferable JavaScript skills, not just this one project:
- modeling a level as a 2D grid of walls
- trigonometry for ray direction and angles
- stepping a ray until it hits a wall (DDA)
- turning wall distance into column height
- assembling an ascii frame from ray hits
- a pure render function (player pose in, frame out)
A course like this one
Yours is built from your own placement, so module count and depth will differ. This map shows what a advanced-level JavaScript learner building Raycaster actually gets.
- Module 1: Advanced JavaScript Values and Product State5 lessons
Builds the production-ready version of the component state for your raycaster.
- Module 2: Advanced Functions, Modules, and Tests5 lessons
Builds the production-ready version of the reusable utility function for your raycaster.
- Module 3: Advanced API Boundaries and Async Thinking5 lessons
Builds the production-ready version of the API adapter for your raycaster.
- Module 4: Advanced Arrays, Objects, and Client Data5 lessons
Builds the production-ready version of the client data model workflow for your raycaster.
- Module 5: Advanced Events, Branches, and UI Decisions5 lessons
Builds the production-ready version of the event rule that powers your raycaster.
- Module 6: Advanced Frontend Launch Readiness3 lessons
Builds the production-ready version of the release checklist for your raycaster.
How the lessons actually work
Every lesson has you predict what a piece of JavaScript code will output before you run it, then run it for real in your browser and fix what you got wrong. Each module ends in a challenge gate with hidden tests, so you can't advance until your code actually works. The course closes with a capstone that assembles everything into Raycaster, and a runnable proof page tied to your own code.
Common questions
How long does the Raycaster: Fake 3D From a Flat Map course take?
about 7 hours, across 6 modules and 28 lessons, at roughly 15 minutes per lesson. Your own course may run shorter or longer, since it's sized to your placement result, not a fixed template.
Do I need experience?
Yes. This is an advanced-tier JavaScript project, so it assumes you're already comfortable writing and reading JavaScript before you start.
How much does it cost?
$15 one-time, no subscription. The first module is free, so you can see exactly how the course teaches before you pay for the rest.