Forums » Impact Engine » Impact 1.24 pseudo 3D & web audio

Cool, a 2.5D plugin in Impact 1.24. This demo is just like Wolfenstein 3D from back in the day.

Each new update of Impact gets me interested again and I go and update all the games that I never seem to finish…

Haha. This is awesome. :)

wait what? AWESOME :D

Btw., the "TwoPointFive" plugin is a cleaned up version of the technology behind my game Xibalba.

I still have to write some more documentation for TwoPointFive, but I hope the included example game will be a good starting point already!

Neat. I always wondered what the screenshot was from that Ejecta 1.5 blog post. And: 2.5D headcrab ;) ? Funny.

Is it possible to remove the ceiling and put a nice sky ?

@dungeonmaster: there's nothing build in to draw a skybox, but it shouldn't be all too difficult. You can use the Game's `drawWorld()` method to draw the skybox before calling `this.parent()` to draw the rest.

Okay, I'm just starting to attempt this and have done this:


drawWorld: function() {
//TODO draw a skybox
var background = new tpf.Quad(width, height);
background.setPosition(0, 0, 0)
background.setColor({r:0.05, g:0.1, b:0.3});
background.setRotation(ig.system.camera.rotation.x,
ig.system.camera.rotation.y,
ig.system.camera.rotation.z);
ig.system.renderer.pushQuad(background);

this.parent();
},

but... While it does draw the quad behind, it draws the ceiling on top of it still...
I'm gonna play with it, but if anyone has bright ideas, help is always appreciated.

Edit:
Okay, it seems like I just need to make the quad twice as big in each direction.
I'd love to know why, but I can start with this.

Okay, I'm having trouble trying to figure how to draw an image instead of a simple quad...

I too am trying to get a basic skybox implemented, just using a quad right now like your example code but the issue seems to be the it just stands up one vertical wall positioned off into the distance it only takes up about half of the map and when you turn around it's not there. Regardless of the size you make the quad it still only covers the about half the map when you turn a full 360 degrees. Did you get it working with just a quad? If so mind sharing the complete code for that? Thanks!

I think I needed to make the quad bigger still when I looked at it on the phone (I'm supporting both 640 and 1024 widths with various aspect ratios)
I haven't tried a map without any ceiling, I only tested a hole in the roof, so to speak.
When I get back around to working on this issue, I'll make a map without a ceiling and try to get it all working.

Okay, so I got it working without any parallax.
I'm sure I've gotta add something to the update() function to get parallax working.

In the game's init():

this.skyboxImage.width = screen.width;
this.skyboxImage.height = screen.height;
this.skyboxQuad = new tpf.HudTile( this.skyboxImage, 0, screen.width, screen.height);
this.skyboxQuad.setPosition(0, 0, 0);

And then added this to drawWorld():

this.skyboxQuad.draw();