Ludum Dare 34 — December 11th-14th, 2015 — Theme Tied: Two Button Controls, Growing

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Vectrex 2: Neon Boogaloo

by ChainedLupine - Jam Entry

This in my game! You can make a spaceship bigger by pressing the X key! Wow!

Actually, I didn't finish my game for this Ludum Dare. Since I'd entered a number of LDs, you think I'd know better by now! Despite not finishing a game, I did manage to have a lot of fun hanging out with the LD crowd and sharing the LD experience. And that, to me, is what Ludum Dare is all about.

About what I have up here. It's a Pixi.JS demo with a custom vector wireframe 3D engine. My goal was to make an old-style arcade game that played similar to a reverse-Hexagon, where you navigated a wireframe ship through a solid-filled puzzle with progressively narrower/shifty corridors.

About the engine: Models are stored as Wavefront OBJ files and parsed by wireframe.js. They are turned into a series of vertices and lines. Wireframe.js then performs all of the matrix math necessary, including converting 3D vertices into a series of screen-space 2D lines. These lines are then rendered by Pixi.js as a Graphics object.

Because the 3D engine is doing everything but actually rasterizing the lines, wireframe.js works with the standard HTML5 Canvas. (Use the Canvas link to try it out.)

Currently I am using Pixi.js along with a few WebGL shaders to give it that nice glowy vector look!

Things missing: No screen-space clipping, at all. (Watch as the spaceship turns inside out if you move it behind the camera!) No backface culling. (Duh, it's 80s wireframes, who needs that?)

Note: I am using THREE.js, but only for the linear algebra math stuff. Cuz I am tired of re-writing Vector and Matrix operations in yet another language.

Downloads and Links




Dec 15, 2015 @ 1:52am

Well it definitely looks cool! Would love to see the ship flying in an environment.

trueboolean says ...
Dec 15, 2015 @ 1:52am

Great job with the custom 3D engine! When can we expect Vectrex 3: Electric Boogaloo?

Dec 16, 2015 @ 1:27pm

Well the graphics are nice at least :)

Are you still going to build a full game with it?

rzuf says ...
Dec 17, 2015 @ 10:04am

I love vectrex stuff, please do something amazing with this. :3

Headmade says ...
Dec 18, 2015 @ 11:22am

Neat demo. Better luck next time with your game.

Dec 21, 2015 @ 8:53am

Pretty cool demo, some sound/music could be nice to really set up the mood

Gamepopper says ...
Dec 23, 2015 @ 1:45pm

Definitely a good looking spinning vector ship, gives me the thought of a HD remake of the original Elite, using vector graphics to keep the wireframe look.

gallerdude says ...
Jan 4, 2016 @ 4:32pm

Cool graphics.

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