Java 2.5D from scratch - Raycasting test #3 - Floor and Ceiling

Experiment to render the floor and the ceiling of traditional raycasting. No setPixel(x, y)-like function was used. Everything was rendered using only standard java 2D Graphics2D.drawImage() function.

The idea consists in first rendering the 2D top image of the floor and ceiling in an offscreen image and then use it to render the 3D perspective view. The result quality is not so good, but at least it works :)

ps.: sorry about the recording, don't know why the video is so laggy :( ...

p.s: use 'z' and 'x' keys to rotate the camera

Previous tests:

Very cool references:

[vipmember]

Thats actually beautiful. So nostalgic.

[MasterNinjaKF]

Esse Raycast sincroniza o movimento do chão e o teto, tá incrível!

[GhomezAnonimous]

great lighting and good use of render distance limiting :)

[Knifeworld]

Reminds me of Ken Silverman's earlier stuff before he created the Build engine. Very nice!

[cfbmoo]

Nice video and thanks for posting example code!

[notNull..]

Could you share how you did it? This is really amazing

[wvw]

Nice implementation. Thanks for your videos, everything is awesome. Btw what's your pc specs?

[oliverb.]

How did you implement the fog? Interesting, amazing!!

[snurffff]

How did you draw the floor and ceiling so efficiently. I used the a method where it casts a ray for each pixel and finds where it hits on the texture but that decreses my frame rate to about 4 frames per 10 seconds.

[xenoncoder]

Video tutorials on how to build a full raycasting engine (maps, huds, commands) is the dream of all my life swear! You can use freedoom textures that are different from the original doom and completely open. Please, I want to understand in detail how to make a wolfenstein 3d engine, doom. If you do it I will make you donations for the rest of my miserable life! Thank you.

[DiegoLopesCF]

Muito legal, isso é Ray Casting certo?
Sempre quis entender :P

[Adrixcorp]

This repository has been disabled :c sad