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Pakz
Created : 23 July 2022
Edited : 23 July 2022
System : Cross Platform
Language : Javascript

Raycast engine(short)(javascript/html)

Raycast engine in javascript/html

Latest Update

From a tutorial on youtube by 3dsage. I finally heard the line that explained how to do a raycaster.

You just shoot a bullet. The bullet hits a wall. You have the distance traveled of the bullet. Draw a wall part there based on that distance. Bullet being the ray.

The code is short. Not optimized. Is can be pasted into a file. Save as html and open with browser.

No player movement controls. It just rotates.

 

Comments


Saturday, 23 July 2022, 11:42
Jayenkai
Nice!
The floor could do with being a bit lower, mind.
When I tried it, I took the "Y Top of the Wall" height and added it to the bottom of the wall.
If not full height, then maybe *0.75 or something.
Currently it looks like your head's flat on the floor! ... .. Which might be a fun game
Saturday, 23 July 2022, 13:18
Pakz
Noted

I hacked it together after watching the video. Trying to create as little lines as possible.

There was a part on how to create the ray per gird cell. I do it per pixel here.

I did peek a bit at the original source. Mainly the fish eye correction part.

I'm going to watch the second video. There is going to be explained how to texture it all.


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Friday, 29 July 2022, 14:30
Pakz
Two days of concentrated work I spend trying to get the Doom tutorial part 1 code working in javascript/html.

I hacked in some mouse controls for the buttons. No idea if that works. The touch and keyboard controls do work.


Friday, 29 July 2022, 17:13
Jayenkai
That's working really well. And smooth, too!
A couple of freakouts when you walk "into" the blocks, but once you've stopped the player from doing that, it'll be grand!
Friday, 29 July 2022, 17:16
Pakz
The tutorial maker asked me to send the link to the code. He mentioned he wanted to show peoples work in the next video's. So I think there wil be another one. And hopefully with the codez to texture the things and add collisions.
I think I might be able to base it of the raycasting tutorials. But this might take me days, or burn me out on bugs.