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Introduction to BlackBerry NDK for Game DevelopersAaron Ardiri
Principal Developer Evangelist
twitter: @ARDIRI
Development Platform Freedom
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Open Industry Standards
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Code Sample: Main Entry Point
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#include <stdio.h>#include <stdlib.h>
int main(int argc, char **argv){ fprintf(stdout, “Hello World\n”); return EXIT_SUCCESS;}
BlackBerry 10
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Integrated Social Beautiful
BlackBerry Platform Services
low level integration with the BlackBerry platform
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BlackBerry Platform Services
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overview
the BlackBerry Platform Services (BPS) library provides an application with a single consistent interface to a number of different services during the execution of the application.
- universal event management- user interaction – working with the navigator- input/output (sensors, audio, LED, screen, multimedia)- device information, locale and payment services- network status and geo-location
BPS: Event Loop Code Sample
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for (;;){ bps_event_t *event_bps = NULL; bps_get_event(&event_bps, timeout); // -1, forever if (event_bps != NULL) { event_domain = bps_event_get_domain(event_bps); if (event_domain == xxx) { // request event information within the domain } }}
BPS: Platform Services Template
handling {service} events
{service}_request_events({param}); // request events
then capture the appropriate {service} events
event_domain = bps_event_get_domain(event_bps); if (event_domain == {service}_get_domain()) { // handle the {service} event
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BPS: Navigator
handling navigator events
navigator_request_events(0); // request events
then capture the appropriate navigator events
if (event_domain == navigator_get_domain()) { e_id = bps_event_get_code(event_bps);
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BPS: Navigator Events
navigator events of use for game developers
NAVIGATOR_EXIT NAVIGATOR_SWIPE_DOWN NAVIGATOR_BACK NAVIGATOR_WINDOW_STATE NAVIGATOR_ORIENTATION_CHECK NAVIGATOR_ORIENTATION NAVIGATOR_LOW_MEMORY ...
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BPS: Navigator
invoking other navigator services navigator_invoke(“http://developer.blackberry.com”, NULL); navigator_invoke(“camera://photo”, NULL); navigator_invoke(“settings://about”, NULL); navigator_invoke(“videos://recorded”, NULL); ...
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BPS: Screen and Window Handling
composite window handling
the BlackBerry 10 platform provides a composited windowing API (low level) – which allows the creation of a windows and defining the appropriate properties (colors, depth, dimensions).
screen_create_context(&scr, SCREEN_APPLICATION_CONTEXT);screen_create_window(&win, scr);screen_set_window_property_iv(...);
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BPS: Screen and Window Handling
creating a 1280x768, 16bpp 565 (RGB) window
int param = SCREEN_FORMAT_RGB565; screen_set_window_property_iv (win, SCREEN_PROPERTY_FORMAT, ¶m); int rect[] = { 1280, 768 }; screen_set_window_property_iv (win, SCREEN_PROPERTY_BUFFER_SIZE, rect);
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BPS: Screen and Window Handling
FrameBuffer
for “oldskool” computer graphics enthusiasts – a pixel FrameBuffer can be easily obtained from the window object allowing for the development of retro games and emulators.
screen_create_window_buffers(win, 1); screen_get_window_property_pv(win, SCREEN_PROPERTY_RENDER_BUFFERS, (void **)&pFB);
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BPS: Screen and Window Handling
Open GL ES 1.1 or 2.0
to take advantage of the hardware accelerated 3D graphics (Open GL ES 1.1 or 2.0) – simply use the standard eglXXX API calls to initialize the environment.
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BPS: Screen and Window Handling
handling screen events
screen_request_events(screen_ctx);
then capture the appropriate screen related events
if (event_domain == screen_get_domain()) { event_scr = screen_event_get_event(event_bps); screen_get_event_property_iv(event_scr, SCREEN_PROPERTY_TYPE, &e_id);
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BPS: Screen and Window Events
screen events of use for game developers
SCREEN_EVENT_POINTER SCREEN_EVENT_MTOUCH_TOUCH SCREEN_EVENT_MTOUCH_MOVE SCREEN_EVENT_MTOUCH_RELEASE SCREEN_EVENT_KEYBOARD SCREEN_EVENT_DEVICE new in 10.1 SDK
(gamepad) ...
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BPS: Sensors
handling sensor events
if (sensor_is_supported(sensor_type)) sensor_request_events(sensor_type);
then capture the appropriate sensor related events
if (event_domain == sensor_get_domain()) { e_id = bps_event_get_code(event_bps); ...
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BPS: Sensor Events
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sensors that may be available (check before use)
SENSOR_TYPE_ACCELEROMETER SENSOR_TYPE_MAGNETOMETER SENSOR_TYPE_GYROSCOPE SENSOR_TYPE_AZIMUTH_PITCH_ROLL SENSOR_TYPE_ALTIMETER SENSOR_TYPE_TEMPERATURE SENSOR_TYPE_PROXIMITY SENSOR_TYPE_LIGHT ...
BPS: Network Status
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handling network status events
netstatus_request_events(0);
then capture the appropriate network status related events
if (event_domain == netstatus_get_domain()) available = netstatus_event_get_availability(event_bps);
to check the network status at any time:
netstatus_get_availability(&available);
Scoreloop Integration
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social integration
• user profiles
• challenges
• achievements
• leader boards and high scores
• virtual goods and currency
Games
3rd Party Game Engines
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Simple Directmedia Layer
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GNU LGPL v2 License
• FrameBuffer and hardware accelerated Open GL
• audio and multimedia playback
• threads, timers and endian independence
http://www.libsdl.org
gameplay
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Apache 2.0 License
• hardware accelerated Open GL scene graph
• audio and multimedia playback
• input, sensors, physics and particle engines
http://www.gameplay3d.org
Cocos2D-X
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MIT License
• hardware accelerated Open GL
• scripting support (JavaScript, LUA)
http://www.cocos2d-x.org
Marmalade
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Commercial License
• hardware accelerated Open GL (3D)
• audio and multimedia playback
• numerous licensing models – cross platform
http://www.madewithmarmalade.com
Game Developer Highlights
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let’s take a look at some regional indie developers making the most of the BlackBerry 10 platform.
Developer: Tactile Entertainment
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ChasingYellow
• Cocos2D-X
• Leader boards
• Challenges
• Achievements (entry point, add friend, rematch)
Fruit Blitz
• C++ with Open GL ES 2.0, Open AL
• Leader boards
• Challenges
• Achievements (entry point, add friend, rematch)
• Progress Sync
Developer: Tactile Entertainment
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DynaStunts
• C with Open GL ES 2.1, Open AL
• Leader boards
• Challenges
• Achievements (entry point, add friend, rematch)
• Custom Profile Image
Developer: Tactile Entertainment
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Distribution and Marketing
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how to sell and make your games a success
Application Publishing
Publishing to BlackBerry World
• BlackBerry World is the on-device distribution catalogue• a publishing account is required to use BlackBerry World
• free to sign up• royalty share between RIM and developer (70% developer)
• provide payment details (paypal, et al)• create product (metadata) and release BAR files
• 480x480 icon, featured image, screenshots and description
Application Monetization
Pre-mium, free-mium or combination?
many methods to monetize; all options are available to you
• paid applications• free applications with in-app purchases• free applications with advertising
Built for BlackBerry
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Application Certification
• recognized high quality
• the official “stamp” of approval
• give customers peace of mind
• improve visibility in BlackBerry World
For More Information…
Native Development Resourceshttp://developer.blackberry.com/native/
BlackBerry Developer Bloghttp://devblog.blackberry.com/
BlackBerry Developer YouTube Channelhttp://www.youtube.com/user/BlackBerryDev
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Thank You!Aaron Ardiri
Principal Developer Evangelist
twitter: @ARDIRI
