Leo Ono - Invidious

Leo Ono

Hello, first of all, thanks for visiting my channel :D !

My name is Leo, i'm already a 45 years old (in 2025) hobbyist game programmer from Brazil.

In this channel, i'd like to share my projects that i like to try to implement in my spare time. The code is little bit messy and has a lot of bugs xD ... but it's all from scratch :) !

Hope you like it :D

My projects source code: github.com/leonardo-ono

My current email is not working. Please try this another temporary account: ono.leo80@gmail.com

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2:02

[Java] from scratch - Atari 2600 Emulator Experiments (Very Buggy!) Test #01

Leo Ono

Shared 2 days ago

110 views

6:59

[Java] from scratch - Gameboy DMG Emulator Experiments Test #01

Leo Ono

Shared 11 months ago

1.4K views

1:09

[Java 3D] from scratch - Baking Global Illumination / Radiosity - first experiments - Test #1

Leo Ono

Shared 1 year ago

654 views

2:22

[Java 3D] from scratch - Baking Direct Light first experiments / Light mapping - Test #1

Leo Ono

Shared 1 year ago

700 views

1:39

[Z80 Assembly] - Another Snake Game Test from Scratch

Leo Ono

Shared 1 year ago

2.3K views

3:26

[PSX Dev] - Running a program (with debugger) on a real Playstation 1 console via Serial Link Cable

Leo Ono

Shared 1 year ago

3.1K views

5:57

[Assembly 8086 / DOS] - Let's code a very simple COVOX PCM audio player

Leo Ono

Shared 1 year ago

606 views

4:24

[Java] from scratch - MIDI Player (Very simple Sample-Based Synthesizer + MID File Parser) Test #1

Leo Ono

Shared 1 year ago

765 views

2:26

[Java] from scratch - MOD Music Player

Leo Ono

Shared 1 year ago

482 views

1:01

[PS1 C Language + PSY-Q] 3D Model and Vertex Character Animation - Test #5

Leo Ono

Shared 2 years ago

1.4K views

1:47

[PS1 C Language + PSY-Q] 3D Polygons Subdivision Flat/Textured - Test #4

Leo Ono

Shared 2 years ago

1K views

1:20

[PS1 C Language + PSY-Q] 2.5D Raycast to 3D Polygons - Test #3

Leo Ono

Shared 2 years ago

1.1K views

1:33

[PS1 C Language + PSY-Q] PSX Raycast Project - Test #2

Leo Ono

Shared 2 years ago

1.9K views

1:19

[PS1 C Language + PSY-Q] PSX Raycast Project - Test #1

Leo Ono

Shared 2 years ago

1.7K views

1:22

[Java 2D] game from scratch - Lode Runner (1983) - Test #1

Leo Ono

Shared 2 years ago

1.2K views

3:11

[Java 2.5D] from scratch - Doom (1993) WAD render / Player Collision Detection (Blockmap) - Test 005

Leo Ono

Shared 3 years ago

2.4K views

3:28

[Java 2.5D] from scratch - Doom (1993) WAD map renderer / Walls & Textures - Test 004

Leo Ono

Shared 3 years ago

2.1K views

2:17

[Java 2.5D] from scratch - Doom (1993) WAD map renderer / Visplane - Test 003

Leo Ono

Shared 3 years ago

1.1K views

2:11

[Java 2.5D] from scratch - Doom (1993) WAD map renderer / covering the floor & ceiling - Test 002

Leo Ono

Shared 3 years ago

677 views

1:28

[Java 2.5D] from scratch - Doom (1993) WAD map renderer / First experiments - Test 001 :)

Leo Ono

Shared 3 years ago

2K views

9:45

[Java 2.5D] Game Engine from scratch - Java Wolfenstein 3D (1992) Game Engine / Completed v0.0.1

Leo Ono

Shared 3 years ago

2.7K views

0:54

[Java 2D] from scratch - 2D Raycasting using Digital Differential Analyzer (DDA) / Test #1

Leo Ono

Shared 3 years ago

995 views

6:54

[Assembly 8086 / DOS] - Let's code a very simple IMF music player (source code)

Leo Ono

Shared 3 years ago

3K views

0:56

[Java 3D] from scratch - Yet another very simple 3D software renderer test

Leo Ono

Shared 3 years ago

4.5K views

5:07

[Java 3D] from scratch - "Resident Evil 1"-like Game 360 View Test #5 - Room Transition

Leo Ono

Shared 3 years ago

2.1K views

2:32

[Java 3D] from scratch - "Resident Evil 1"-like Game 360 View Test #4 - Enemy Follows Player

Leo Ono

Shared 3 years ago

1K views

0:46

[Java 2D] from scratch - Pixel based 2D shadow mapping Test

Leo Ono

Shared 3 years ago

709 views

1:14

[Java 2D] from scratch - 2D Normal Map Effect Test

Leo Ono

Shared 3 years ago

1.3K views

1:29

[Java 2D] from scratch - Integration and Disintegration (Dissolve?) Effect Test

Leo Ono

Shared 3 years ago

696 views

3:28

[BrainUnfuck Language] Game - Hunt The Wumpus (1973)

Leo Ono

Shared 3 years ago

767 views

0:38

[Java 2.5D] from scratch - Doom-like level renderer using only Image Maps Test #1

Leo Ono

Shared 4 years ago

2.9K views

1:39

[Java 3D] from scratch - Portals and Cells Occlusion Culling Experimental Reimplementation Test #2

Leo Ono

Shared 4 years ago

1.3K views

1:18

[Java 2.5D~3D?] from scratch - 2D Raycasting with 3D 360 View Test

Leo Ono

Shared 4 years ago

1.9K views

2:38

[Java 2D / 3D] from scratch - Binary Tree Occlusion Culling Spans (C-Buffer) - Test #1

Leo Ono

Shared 4 years ago

1.1K views

0:58

[Java 2.5D] Game from scratch - Very Low Res Pseudo 3D First Person RPG Game Test #1

Leo Ono

Shared 4 years ago

2.6K views

0:58

[Assembly 8086 / DOS] - Playing 1-Bit PCM digitized sound through the PC-Speaker (beware loud sound)

Leo Ono

Shared 4 years ago

3.1K views

0:59

[Assembly 8086 / DOS] - Playing PCM digitized sound through the Adlib / SB OPL2 card (source code)

Leo Ono

Shared 5 years ago

1.2K views

17:23

[Java 3D/ Blender 2.8+] from Scratch- Looping Flag Animation/ Collada Morph Target Animation Test #3

Leo Ono

Shared 5 years ago

798 views

4:02

[Java 3D Physics] from scratch - Level(Mesh Collider) vs Player(Sphere Collider) Collision Detection

Leo Ono

Shared 5 years ago

1.8K views

1:04

[Java 2D] from scratch - 2D Procedural Dungeon Generation using Prim's Algorithm Test

Leo Ono

Shared 5 years ago

2.5K views

1:14

[Java 3D Physics] from scratch - Cube Player & 3D Block Level Collision Detection (Minecraft-like?)

Leo Ono

Shared 5 years ago

1K views

3:26

[Java 2D / AI] from scratch - 2D NavMesh with A* (A Star) Path Finding

Leo Ono

Shared 5 years ago

1.5K views

1:05

[Java 2D] from scratch - Simple B&W Metaballs Test Demo ("Blobby" Effect)

Leo Ono

Shared 5 years ago

399 views

4:37

[Java 2D / AI] from scratch - A* (A Star) Path Finding Algorithm Test

Leo Ono

Shared 5 years ago

4.2K views

1:23

[Java 3D Physics] from scratch - Collision Detection With Terrain (Height Map vs Point) Test

Leo Ono

Shared 5 years ago

2.6K views

2:01

[Assembly 8086 / Turbo C] - Keyboard Input Interruption Handler (INT 9h) Interface with Turbo-C 2.01

Leo Ono

Shared 5 years ago

965 views

4:27

[Assembly 8086] - "Bad Apple!!" FMV (UPDATE) VGA + PC-Speaker Music / Online demo on archive.org

Leo Ono

Shared 5 years ago

5.3K views

0:16

[Java 2D] Blast'em Up (by @Adri Kriptok) - Castlevania IV Tunnel Background Scroll Effect Algorithm

Leo Ono

Shared 5 years ago

483 views

1:08

[Assembly 8086] - Palette Animation in VGA Graphic Mode-Y for PC-XT 4.7MHz

Leo Ono

Shared 5 years ago

1.9K views

1:54

[Assembly 8086] - Horizontal Smooth Scrolling in VGA mode 13h for PC-XT 4.7MHz

Leo Ono

Shared 5 years ago

1.8K views

0:48

[Assembly 8086] 2D - VGA Hardware / Bad Sync TV Effect

Leo Ono

Shared 5 years ago

670 views

0:45

[Assembly 8086] Text Console - Conway's Game of Life [RIP John Conway]

Leo Ono

Shared 5 years ago

951 views

0:55

[Java] Text Console - Conway's Game of Life [RIP John Conway]

Leo Ono

Shared 5 years ago

716 views

0:58

[Haskell / gloss] 2D - Conway's Game of Life [RIP John Conway]

Leo Ono

Shared 5 years ago

985 views

0:59

[Haskell] Text Console - Tic Tac Toe Game (minimax AI)

Leo Ono

Shared 5 years ago

1.9K views

2:34

[Haskell / gloss] 3D - Pocket Cube (2x2 Rubik's Cube) Game

Leo Ono

Shared 5 years ago

992 views

1:08

[Haskell / gloss] 2D - Inverse Kinematics Test

Leo Ono

Shared 5 years ago

737 views

0:56

[Haskell / gloss] 2D Game - Functional Programming Snake

Leo Ono

Shared 5 years ago

4.1K views

0:49

[JavaScript / Chrome DevTools] 2D Game from scratch - Text Snake

Leo Ono

Shared 5 years ago

481 views

1:15

[Java] 2D Game from scratch - PWM (Pulse Width Modulation) Game

Leo Ono

Shared 5 years ago

879 views