Frets on Fire on Maemo 5 (Fremantle)

Couple days ago I played Frets on Fire (FoF) for the first time. I was totally hooked on to it. After going through its hilarious tutorial and starting with a pathetic performance, I managed to score 37K points with 87% accuracy on the “Defy the Machine” song a few moments ago.

Couple days ago Nokia released the alpha version of Maemo 5 SDK (Fremantle) too.

I woke up next morning with an inevitable thought of porting the former on the later.

After a day’s work here is a video demo of “Frets on Fire” running in the Maemo scratchbox SDK. And find below a list of things I had to do to get it working.

[If you don’t know about FoF, it’s an open source Guitar Hero clone that runs on many desktop platforms. It is written completely in python. While playing it you hold your keyboard in an unusual fashion so that it simulates a rockstar’s guitar. (wikipedia)]

In future we can tweak FoF’s UI so that the strings could be pressed against the frets using the touch screen itself.

There is no sound in the video, but it’s just because I couldn’t channel the sound through two layers of virtualization and into the video recorder software. I could hear the songs alright though after transporting them over wire using pulseaudio.

[Note that scratchbox is running on Ubuntu which itself is a KVM virtual machine. That should put the poor framerate into perspective.]

Here are the things I had to do:

  • Fremantle SDK doesn’t have python distutils. In diablo it comes from extras repo, so I borrowed it from there as well. (Added diablo extras repo in /etc/apt/sources.list)
  • Fremantle SDK has a bug that I had discussed on mailing list during pre-alpha release, due to which the SDL/pygame applications cannot use the OpenGL support of the SDK. Due to same bug, FoF would also not work. After some googling I figured out the root cause and a work around. I built a private version of libsdl with –enable-video-opengl option. That did the trick. I have filed a bug to get this fixed in Fremantle.
  • I also had to build custom packages of PIL (python imaging library) and numpy. I believe these libraries are available in diablo through extras repository, so I guess they will also be available in fremantle in future.
  • Next I had to modify src/Input.py to comment out pygame’s joystick initialization code.
  • The really tough part was getting sound working. I found an old post to get sound working in scratchbox. Although it was a correct procedure, it didn’t work for me. After a while I remembered from the Maemo summit that Fremantle runs pulseaudio (as opposed to esound in diablo). After that I did some googling and figured how to transport the sound over network using pulseaudio server and client. Here are couple useful links. [1] [2]
  • The job on sound wasn’t over yet. FoF runs all its music from ogg files. pygame won’t play ogg files on fremantle. I dabbled into recompiling SDL_mixer with ogg support, but that didn’t help. Then another discussion from Maemo summit came to mind, and I remembered for some (non-technical ?!) reason Maemo doesn’t play ogg. So to get around it, I converted all .ogg files into .wav using ffmpeg. Changed the code wherever necessary to replace the file name extensions from ogg to wav. That did the trick and finally I could hear the sound.
  • The game by default used 600x480 resolution. After some analysis of the code, I found fretsonfire.ini file in my home directory. I changed it to set the resolution to 800x480 to fit into the Xephyr window.
  • There is one thing that I couldn’t get to work. Arrow keys won’t work. I found that the scan codes sent through Xephyr to the pygame were different from what are put in pygame constants.

… so when Nokia releases that next device, we will have an electric guitar in our pocket. :)


Home


Archive

2018

Violet end of spectrum

Vipassana Meditation

Why gamers like pixelated games

2017

Collecting Vs Hoarding Netflix

Game Design tip for Programmers - Less Automation

Review Ghost In The Shell - The blinds scene

Why Electron is the best development platform?

Project Dialog

2016

Don't Panic

The Entanglement Pattern

The flying cars analogy

Road Trip of Atlantic Canada

Having done attitude

2015

Before fixing performance issues

No Exams, Yes Video games

Podcasts Français

2014

Quotable Quotes

Conned?!

2013

Uruguay's President

New rules for Formula 1

Software Engineering Code of Ethics and Professional Practice

Something's missing

2012

Coffeescript: To switch or not to switch

Water from air

The single most reason that keeps me using Vim

Time travel fiction

When your git branch diverges from your remote

Something like Olivia - John Mayer

Online courses - New technology, Old rules

Kelsey Grammer is spectacular

Why Patriotism doesn't make sense

Why sea steading is important to pursue?

Prometheus

Rolling back latest git commit

Google Lunar X Prize

iTunes Download stopped (err =9006)

Good essay on user centric software design

Why we need to explore Seasteading?

2011

Master pieces from screen

How to write interactive CLI utility in node.js

The Gods Themselves by Isaac Asimov

Why OpenGL ES is so hard?

How to print stack trace anywhere in Javascript

It's not fair to compare Android with Internet Explorer

How to debug WebWorker threads?

Why can't I criticize Government if I don't vote? I sure can.

Elon Musk quote

Don't label yourself

Why the hi-tech minds are writing Social apps?

Truce with exercise

JavaScript is the next C

Ever growing todo list is a good sign for creative projects

Lesser women in tech... So what?

HTML5 offline cache - use swapCache carefully

How Wikipedia and Flattr can together change the World

2010

Discovering LastPass

Functional programming in Javascipt using Underscore.js

Youtube ETA - Chrome extension

Why secure airports when it's planes that fly?

Mac book red light audio jack problem on Linux

How to save HTML5 canvas image to Google App Engine

Why don't they publish eBooks for free but with embedded ads?

Silicon Valley and Hi-tech

Reality distortion field around

Indirect experiments

Music sharing

ReaderScope 2.0.6 - Find Comments

ReaderScope 2.0

predictably irrational

ReaderScope upcoming changes

Tuxmac

Why "Open" is not the first concern of user?

Mutt, Gmail, gdata, notify-send: A Perfect Email solution

Are you the Matt Damon of your game?

ReaderScope 1.9 - OAuth

New app "Find Comments"

@font-face-lift

ReaderScope 1.8.{2,3} - new authentication and global share

Portable apps for iPhone, Android, Pre, n900 - Can Processing.js help?

ReaderScope 1.8.1 - rethinking features

ReaderScope 1.8 - Random

Android fragmentation : How big a deal is it?

on Dropbox

iLikeIt

ReaderScope v1.7 - Widget, new Icons and .... Ads

on Git: tips for SVN users and Git in Dropbox cloud

How to do an online IDE for Android app development

Anti Asserts

Bono's top ten list

Make Android speak your Twits with "TwitSpeak"

2009

Reality of colors

Talking Twitter client

ReaderScope 1.5 - quicker, better, prettier

Preview android.R.drawable.* images

Is definition of "Evil" changing?

on Music: Battle Studies

ReaderScope 1.4 (with a Theme Pack)

On Chrome OS

Black on White

Android AsyncTask template

The AND-OR problem of laptop and mobile phone

ReaderScope v1.3.3 - offline podcasts

ReaderScope v1.3.2 - Social Channels

ReaderScope v1.3 - Beyond Google Reader

Frets on Fire for Maemo - Update

ReaderScope 1.2.7 - Podcasts, Expanded View

Sprint HTC Hero problems with ReaderScope

ReaderScope 1.2.3 - Search

ReaderScope 1.2.1 - Auto Login

ReaderScope v1.2

ReaderScope 1.1.3 - SDCard storage

Crash report for Android App

Wifi and Battery

ReaderScope 1.1.2

ReaderScope 1.1.1 quick-n-easy features

ReaderScope 1.1 - Social Beacons

ReaderScope 1.0.2 - making deep cache simple

ReaderScope 1.0.1

ReaderScope 1.0

Detecting HTC magic on Fedora

ReaderScope beta4 - offline fun

ReaderScope beta3 - Tweet the news

ReaderScope Beta2

ReaderScope beta1 is out

Intercepting Up/Down keys from bash script

Makeshift XML beautifier in python

HTC Magic (Indian version) - expectations and facts

using android AsyncTask

Android development with Vim + Eclim

Cutewit (preview)

Einstein's Dreams

Preprocessing the GUI

Evas + Inkface in v0.2.5

easy source

FoF - PyOpenGL = miniFoF (possibly for n810)

FoF update

Twitter client with inkface-pygame v0.2.2

Frets on Fire on Maemo 5 (Fremantle)

Static IP configuration on Fedora 10

Inkface+pygame v0.2.0

Smooth scrolling with Inkface+pygame

Inkface v0.2 update and automated GUI testing

Testing Android (Koolu Beta 3) on Openmoko Freerunner

Clutter animation paths with Inkscape+Inkface (v0.1.3)

Turning a page

Planning Inkface v0.2

Debian repository on Google App Engine

Inkface + Clutter

Inkface v0.1.2, Twitter-inkface client

2008

Inkface update

Debugging python reference counts

Paul Graham nails it again!

Fedora 10 on MacBook 2,1

A great essay

Thanksgiving at Crater Lake

Digital SLR buyer's guide

more fun with notify-send

(k)ubuntu 8.10 - not ready for my home yet

Migrating to Google App Engine

Android opened - first looks inside

Has it started?

Inkface v0.1

Musical discovery of the week

Die Berlin-Affäre

aus Berlin

Inkface - SVG based GUI design

Script fun

Visualizing source code

OpenMoko photo tour

New connection with the past

George Carlin - favorite clip

temperature

80-20 rule

Python fun

OSiM'08 Berlin, Germany

Of games

"Wine" tasting

Today's slashdot and open source

Cost of Open Source

Lions for Lambs

Ubuntu reviewed

Flickr uploads from n810

Cringely and Paul Graham

Accelerometer brainstorming

Clutter Webkit

OSiM USA 2008 - Day 2

OSiM USA 2008 - Day 1

Google code

Gr8 commercial

OSiM USA 2008, see you there

OpenMoko, Android and a great hacking post

two great videos

Blog from nokia tablets

2007

cool n770 hack

Picasso

Colbie Caillat

Firefox 3 is brilliant!!!

XML RPC server inside apache mod_python

best effort technologies

coding Monalisa

formula of a horror movie

next desktop jump

The "Screen"

Nice review article on virtualization technologies

Once again... a quote from 'Troy'

Story of a random number

quotes from George Carlin

"from time import sleep"

Sea surfing under the Golden Gate

Trip videos

2006

across two hours

What I read...

How do I backup to Amazon S3 storage service

Stranger than fiction

Gas prices... seems like big scam

Another nice quote

Hilarious nerd comment

Programming & Painting

Why do we like fiction?

Troy

If Harry Potter were a computer hacker ...

Gentoo, XGL, HGG

Henry Ford

VI - A capable IDE

New blog

Safari Bookshelf

2005

Back to the L4

Quotes

GCC 2.95 rpms

repeat (ps | grep) = filtered top

Halo fixed on ATI Mobility Radeon 9000

DirectX Installation Problem

Warning: const is a keyword in ANSI C

Not much on L4 front

Last two weeks

GRUBing

Stumbled on HURD

Installed HURD console

Make problem solved

2004

Handy way to create stack trace