https://github.com/paulbatchelor/orb

A 2d musical puzzle game for Android.
https://github.com/paulbatchelor/orb

android c dsp ndk

Last synced: 11 days ago
JSON representation

A 2d musical puzzle game for Android.

• Host: GitHub
• URL: https://github.com/paulbatchelor/orb
• Owner: PaulBatchelor
• Created: 2023-03-31T16:59:32.000Z (almost 2 years ago)
• Default Branch: master
• Last Pushed: 2023-03-31T16:59:44.000Z (almost 2 years ago)
• Last Synced: 2025-01-18T12:15:03.466Z (13 days ago)
• Topics: android, c, dsp, ndk
• Language: C
• Homepage: https://paulbatchelor.github.io/proj/orb/
• Size: 811 KB
• Stars: 3
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# ![Orb](img/logo.png)

Orb is a musical 2d puzzle game, designed primarily for Android devices. 

## Rules

### 1. Propel

Propel the Orb (the circle) and move it around. This is done by poking the

Orb in the direction you want it to go. If you poke too quickly, Orb will

run out of oxygen and you will have to wait for to reinflate before propelling

again.

![Propel](img/rule_propel.png)

### 2. Collide

Collide into squares in the space. 

![Collide](img/rule_collide.png)

### 3. Turn off

Turn off any "on" squares (filled in squares) by colliding into them. This

will change them into the "off" state (stroked squares). 

![Turn off](img/rule_turnoff.png)

### 4. Toggle

Any time a square gets turned off, it can toggle the state of other 

squares, on to off, and off to on. The rules for these are determined for

each level.

![Toggle](img/rule_toggle.png)

When all the squares have been turned off, you will ascend to the next level.

And so on, and so forth...

## Sound and Music

The soundtrack to Orb is synthesized entirely in realtime.  There are no

audio files used. The synthesis is done using

[Soundpipe](https://pbat.ch/proj/soundpipe.html). The audio components conist of the following:

- 3 FM oscillators, used as background drone music

- Enveloped filtered noise generator used for propulsion sounds

- Modal synthesis used as a simple physical model for collisions

- Feedback echo delay

- Modified FDN Reverb, optimized for Android mobile devices

## Graphics

The graphics are done using [NanoVG](https://github.com/memononen/nanovg),

a small anti-aliased 2d vector graphics library built on top of OpenGL. 

## Installing

Right now, Orb must be compiled from

[source](http://git.sr.ht/~pbatch/orb).

## Screenshots

![Level 1](img/small/orblevel1.png)

![Level 2](img/small/orblevel2.png)

![Level 3](img/small/orblevel3.png)

![Level 4](img/small/orblevel4.png)

![Level 5](img/small/orblevel5.png)

## demo

Currently hosted on [youtube](https://www.youtube.com/embed/Q3QjTMByalk).