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White Paper T630/T628
20 October 2003
native code interface that requires as little as 10
machine instructions (depending on the host sys-
tem) overhead for calls to native functions.
Gaming API
The gaming API provides all the functionality a
game requires. It provides platform independent
video access, input, sound and communication. It
also features a query interface that lets you adapt a
game to the capabilities of the device. The API
consists of 100% native code that ensures the best
possible performance.
Because different platforms have varying capabili-
ties, this gaming API has been created with differ-
entiators such as a built in sprite engine, map
engine, different color depth tiles and transparency
support etc. With this gaming API it is possible to
isolate code and data into modules that can be
loaded according to the capabilities of various plat-
forms. It is possible to have both grayscale and
color graphics resources but only load the specific
resources that are compatible with the surrounding
system. Games that do not provide multiple
resources are not a problem because the mop-
hun
™ system automatically handles the conver-
sions. Indeed, future extensions even include a 3D
API.
Secure gamelets
mophun™ gamelets are executed in a secure
sandbox environment that eliminates any possibil-
ity of illegal actions. A secure layer exists between
the mophun
™ application and the “real” system
interfaces. Security is further enhanced as result of
the gamelets having to be digitally signed before
execution on the mobile terminal is possible.
Gamelets are signed in the publishing process after
being screened for malicious content.
Software development kit
The mophun™ SDK is built with GNU tools using
open standards. It is non-proprietary and is offered
to developers completely free of charge. Games
are written in C/C++ or assembler and the kit was
built by game developers. A general PC can be
used to both write and test the software without
any need to access the real device. Source level
debugging is available for both the Linux and Win-
dows versions of the SDK.
Emulation profiles for the target mophun
™ ena-
bled mobile terminal are included in the SDK. It
also ships with a full set of binary utilities for manip-
ulation and handling of code, data and resources.
Certification and deployment
Each game must be certified by Synergenix Inter-
active AB before it can be run on a mobile phone.
This ensures there is no offensive content, that the
game is of sufficient quality and that the gameplay
and functionality conform to settled standards.
A game file can be downloaded via WAP or cable
from an operator’s page or from any publisher’s
WAP page. If the download is supposed to be in
one session, the file size should be less that 60 000
bytes.
Game file sizes
Each game has its own directory in the file system.
A game directory in the T630/T628 can contain up
to 16 different files but together they may not
exceed an aggregate of 480 000 bytes.The maxi-
mum size of files for downloading depends on the
size of the WAP gateway. When provisioning mop-
hun games that are larger than the WAP gateway
limitation, the games may be split up in portions
and reassembled on the mobile terminal.
Functions
Send/receive via TCP/IP link Yes
Send/receive via SMS Yes
Send/receive via Bluetooth Yes
Send/receive via infrared Yes
Vibrator on/off Yes
Backlight on/off Yes
Colour support Yes
Certification control of games Yes
True sandbox technology Yes
True file support Yes
Sprite detection collision Yes
Built-in Unicode including Chinese Yes