(aff302) responsive game design: bringing desktop and mobile games to the living room | aws...
DESCRIPTION
In this session, we cover what's needed to bring your Android app or game to Fire TV. We walk you through controller support for a game scenario (buttons and analog sticks), controller support for UI (selection, moving between menu items, invoking the keyboard), and how to account for the form factor (overscan, landscape, device and controller detection). By the end of this session, you'll be able to understand what you need to do if you want to build or modify your own app to work on a TV.TRANSCRIPT
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© 2014 Amazon.com, Inc. and its affiliates. All rights reserved. May not be copied, modified, or distributed in whole or in part without the express consent of Amazon.com, Inc.
November 12, 2014 | Las Vegas, NV
AFF302
Responsive Game DesignBringing Desktop and Mobile Games to the Living Room
Jesse Freeman, HTML5 & Game Developer Evangelist, Amazon
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ONE OS, MULTIPLE FORM FACTORS
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For the first time in Amazon’s history, we have a complete device ecosystem for publishing your game.
FIRE OS ON PHONE, TABLET & TV
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Our platform is the perfect fit for any developer publishing Android games. We’ve found that most Android apps we tested just work on Fire OS devices. If your IDE outputs an APK, we can run it!
CHANCES ARE YOUR GAME ALREADY WORKS
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Making a Mobile Game?
AMAZON FIRE PHONEGot a mobile game? Try out our Fire Phone,
which features top-end specs, dedicated GPU,
2 GB of RAM and unique features such as
Dynamic Perspective and Firefly.
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Got a Tablet Game?
AMAZON FIRE HD & HDXBuilding for tablet? We have several Fire
tablets ranging from 6”, 7”, and 8.9" sizes.
Each tablet has blazing fast processors as well
and high-resolution HD displays. Our Fire HD
lineup also has great performance at a more
affordable price point for customers.
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Making a PC or Console Game?
AMAZON FIRE TVWant to build your games for the big screen?
Target Fire TV, which allows you to take
Android games and publish them for the
10-foot living room experience.
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Putting It All Together
AMAZON GAMING SERVICESWe have services designed exclusively for
game developers such as GameCircle. If your
current game has leaderboards, achievements,
and cloud syncing it shouldn’t take long to
migrate over to our APIs. We even support
Unity and other third-party game frameworks.
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Distribute Your Game with Us
THE AMAZON APPSTOREReach hundreds of millions of new customers
in 236 countries across multiple platforms:
• Fire Phone
• Fire HD & HDX
• Fire TV
• Amazon App for Android
• BlackBerry
• Mac & PC
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GATEWAY TO THE LIVING ROOM
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Amazon Fire TV gives you a familiar Android-based
platform to extend your apps and games to the big
screen.
WHAT IS AMAZON FIRE TV?
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Choose between the Amazon Fire TV Remote or the
Amazon Fire Game Controller for a richer gaming
experience
POWERFUL ANDROID-BASED GAMING
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The Amazon Fire TV is
INCREDIBLY POWERFULAmazon Fire TV uses a Qualcomm Quad
Core Snapdragon Krait 300 processor with
Adreno 320 GPU and 2 GB of RAM to support
high-performance game experiences.
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Support for multiple types of
GAME CONTROLLERSAmazon Fire TV works with the Amazon Fire
TV Remote and the Amazon Fire Game
Controller through the Bluetooth HID gamepad
profile.
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Full support for
LOCAL MULTIPLAYERAmazon Fire TV allows up to 7 game
controllers to be connected at one time,
opening up multiplayer gaming in the living
room.
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Taking advantage of
SECOND SCREENAmazon Fire TV supports second-screen
experiences using DIAL, an open standard, that
allows customers to discover and open apps on
their television right from their tablet or phone.
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Full support for
HD VIDEO OUTAmazon Fire TV has support for full HD video
out from your app or game at 1080p.
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WHAT IS RESPONSIVE GAME DESIGN?
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a set of guidelines and best practices that help websites scale from desktop to mobile.
ON THE WEB, RESPONSIVE DESIGN IS
http://bit.ly/1vT19ek
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Same Site on Desktop and MobileResponsive design allows the layout of a site to adapt to different screen resolutions.
A
BE
C D
A
B
C D
E
RESPONSIVE DESIGN
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similar concepts to include other key aspects you need to consider when making multi-platform games.
RESPONSIVE GAME DESIGN BUILDS ON
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Responsive game design can be summed up in the following key requirements:
1. Game graphics and UI support multiple resolutions
2. Game mechanics work across multiple types of input
3. Publish to multiple platforms with the same codebase
4. Saved data is synced across all platforms
APPLYING RESPONSIVE DESIGN CONCEPTS TO GAMES
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PART 1 –
GAME GRAPHICS AND UI
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What does it take to get a game’s graphics and UI to look good at multiple resolutions?
SCALING GAME VISUALS ACROSS DIFFERENT RESOLUTIONS
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You will have to design your user interface differently for people sitting 10 feet away from the display.
WHAT MAKES DESIGNING FOR TV SO DIFFERENT
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The goal of 10-foot user interface design is to make
the user's interaction as simple and efficient as
possible, with as few button presses as possible while
still having an intuitive layout, in terms of
accomplishing user goals—what is often called user-
centered design.
THIS IS CALLED THE 10-FOOT USER INTERFACE
http://en.wikipedia.org/wiki/10-foot_user_interface
“
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CLEAN, SIMPLE, AND EASY TO NAVIGATETHE AMAZON FIRE TV’S UI IS
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Navigation should be
REMOTE FRIENDLYRemember that every Fire TV comes with an
Amazon Fire TV Remote so:
• Focus on the core navigation buttons.
• Standard Android navigation for Menu,
Home, and Back buttons.
• Reserve media buttons for playback only.
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Chances are that your existing landscape designs will work perfectly as-is, assuming it supports:
• Button states for selected, disabled, etc.• Easy navigation via the Amazon Fire TV Remote• Clearly indicates how to move from screen to screen
WHEN DESIGNING MOBILE FRIENDLY UI
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Handling different resolutions is all
about understanding aspect ratios.
Design for 16:9 and 4:3 along with UI
that dynamically adjusts for either
ratio.
SUPPORTING MULTIPLE RESOLUTIONS
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Resolution Scaling DemoCODE EXAMPLELeveraging a 3D camera to maintain pixel perfect scaling
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ANTICIPATE USER NAVIGATION FLOWNever let the player get stuck or backtrack through navigation groups.
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PART 2 –
GAME INPUT
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Evolution Of The Console ControllerGAME INPUT EXAMPLE
http://gizmodo.com/5110650/the-evolution-of-the-console-controller
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With a lot of planning and consideration, it’s possible to have games work with a single input mechanic across different devices.
SUPPORTING CONTROLS ACROSS DIFFERENT INPUT TYPES
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That means at the very least, your app should
support simple four-way navigation and selection
input from the remote itself.
A REMOTE IS INCLUDED WITH EVERY AMAZON FIRE TV
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Endless runners, turn-based games, and other mechanics that don’t require precision input can be played with the remote.
DESIGNING FOR THE AMAZON FIRE TV REMOTE
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This is the
AMAZON FIRE TV REMOTEThe remote has all the core navigation
buttons you will need for your app and casual
games:
• Navigation and selection wheel
• Android navigation buttons for Menu,
Home, and Back
• Media playback buttons
• Voice Search (reserved for system only)
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THE 6 MAIN INPUTS FROM THE REMOTE
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Code example
CAPTURING KEY EVENTSHandle DPAD_UP, DPAD_DOWN,
DPAD_LEFT, and DPAD_RIGHT to navigate
your layout.
DPAD_CENTER is the “Enter” key. You can
capture these events by overriding the
onKeyDown method of your View.
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Build upon your existing Amazon Fire TV
Remote’s controls with the Amazon Fire Game
Controller, which adds analog sticks, additional
buttons, and a dedicated GameCircle launcher.
THE OPTIONAL AMAZON FIRE GAME CONTROLLER
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THE AMAZON FIRE TV CONTROLLERSimilar to a console controller with a full array of buttons
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The Amazon Fire Game Controller is perfect for games that require precision controls and multiple buttons.
DESIGNING FOR THE AMAZON FIRE TV GAME CONTROLLER
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Code example
CAPTURING MOTION EVENTSTo access the joystick axis, you can override
Android’s built-in onGenericMotionEvent
method in the Android View. You’ll have access
to the AXIS_X & AXIS_Y values.
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You can connect up to 7 Bluetooth game controllers to the Amazon Fire TV; only 4 of those controllers are assigned to player numbers in the GameController API.
SUPPORTING MULTIPLE CONTROLLERS
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GAME CONTROLLER APIhttp://bit.ly/ftv-controller-api
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The GameController API, part of the Amazon Fire TV’s SDK, offers the following things:
• Methods to associate game controllers with the player numbers
as defined by the Amazon Fire TV.
• Methods to query controller state at any time.
• Input event constants specific to gamepads.
• Behavior to enable you to process gamepad input events on a
per-frame basis (that is, within a game loop).
THE GAME CONTROLLER API
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Cross-platform Controls DemoCODE EXAMPLESingle input for moving a character on desktop, mobile, tablet and TV.
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DETECT THE PLATFORMAnd always display the correct input controls based on the platform the game is being played on.
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PART 3 –
SINGLE CODEBASE
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When targeting multiple platforms, the key is to try to reuse as much code as possible.
PUBLISHING A SINGLE GAME FROM THE SAME CODEBASE.
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Pick Frameworks
THAT SUPPORT MULTIPLE
PLATFORMSDon’t reinvent the wheel. Pick the right
framework to build your game with:
• Unity
• GameMaker
• Unreal Engine
• HTML5
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PART 4 –
SYNCING DATA
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A key component to the responsive game design concept is allowing a single game session to extend across different devices, allowing your player to start on one platform and continue on another.
SAVING STATE ACROSS DEVICES
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GameCircle provides everything you need to implement
achievements, leaderboards, and saved-game synching
on mobile devices regardless of platform.
FIRE OS HAS BUILT IN SUPPORT FOR GAME CIRCLE
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Whispersync for Games automatically
synchronizes game data and resolves any
conflict arising from offline and simultaneous
game use.
WHISPERSYNC FOR GAMES
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You define achievements for your game in the
GameCircle panel of the Amazon Apps &
Games Developer Portal, enter metadata
associated with that achievement, and upload
the images to display for that achievement.
ADDING ACHIEVEMENTS TO YOUR GAME
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Leaderboards can also extend the audience of
your game, as players encourage their friends
to play the game so they can be ranked
against people they know.
THE IMPORTANCE OF LEADERBOARDS IN GAMES
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LEARN MORE ABOUT GAMECIRCLEhttp://bit.ly/amzn-gc
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REAL WORLD EXAMPLE
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Terraria on the Amazon Appstorehttp://amzn.to/1vsR5WR
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Terraria’s gameplay can be broken up into 4 distinct modes:
1. Dig - Exploring the world
2. Build - Creating new structures in the world
3. Fight - Completing missions and activities
4. Explore - Vast open-world sandbox environment
WHAT MAKES TERRARIA UNIQUE
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Each gameplay mode requires different levels of precision making it ideal for playing the game on different form factors that cater to each type.
DIFFERENT STYLE OF PLAY
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64
DIGGINGIdeal for playing on touch screens while on the go
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BUILDINGWorks well on touch screens and controllers for more detailed building
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FIGHTINGRequires precision and is ideal with a game controller
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Terraria also takes advantage of
GameCircle’s WhisperSync, making it
possible to switch between Fire
phone, tablet, and TV based on what
you are doing and where you are.
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WHERE DO WE GO FROM HERE?
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EXTENSIVE ONLINE DOCUMENTATIONhttp://bit.ly/ftv-sdk
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RESPONSIVE GAME DESIGN POSThttp://bit.ly/rgd-post
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WANT TO LEARN MORE?http://bit.ly/games-on-fire
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The End
THANKS FOR
WATCHINGDon’t forget to check out
https://developer.amazon.com/public/
for more info on how Amazon can help you
publish and monetize your own games.
See my blog posts at http://bit.ly/freej-amzn
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Next Sessions:
Thur 11:00 in Murano 3304
AFF202: Everything You Need to Know about Building Apps for the Fire Phone
Thur 4:30 in Murano 3304
AFF301: Fire Phone: The Dynamic Perspective API, Under the Hood
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https://developer.amazon.com/welcome
https://developer.amazon.com/blog
Android
Fire phoneKindle Fire
Fire TV and Fire TV Stick
BB 10