Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

Using the swipe gesture

From: Flash Professional CS5: Creating a Simple Game for Android Devices

Video: Using the swipe gesture

One of the great things about creating games for mobile devices is also the touch screen. Now, with touch screens you can have gestures. And what I meant by gestures is you can, for instance, use two fingers to rotate an object or the same two fingers to maybe magnify an image--things like that. And you can add that into your game. And I am just going to go ahead and integrate that into this IntroScreen right here. So if they're playing this game on a device, they're going to be able to just take one finger and swipe with it.

Using the swipe gesture

One of the great things about creating games for mobile devices is also the touch screen. Now, with touch screens you can have gestures. And what I meant by gestures is you can, for instance, use two fingers to rotate an object or the same two fingers to maybe magnify an image--things like that. And you can add that into your game. And I am just going to go ahead and integrate that into this IntroScreen right here. So if they're playing this game on a device, they're going to be able to just take one finger and swipe with it.

So they don't have to hit the Play button. The whole screen is basically the Play button. And when they swipe with one finger, this screen is going to slide off. All right! And I am going to do this by using the Code Snippets panel in that Mobile Game folder. I am going to add a gesture swipe. So I am just going to double-click on that, and it's going to add that code to my Actions Frame in the Actions layer down at the bottom. So it says Gesture Swipe. I am first defining the input mode as being GESTURE.

Because I can also include various touch points, but gestures are basically a subset of a multi-touch touch points. So this basically is going to be really easy to use because in this case I am going to use Gesture Swipe. Also, what's available is zoom, Gesture rotate, and Gesture pan. All right, in this case I am just going to use the Swipe. So that's defined in right in here instance_name_here. Well, what do I want to swipe? I want to swipe the intro screens.

Let's go ahead and take all of this code and I am going to cut it, and I am going to move it up to the top of the Actions panel, where I see this intro screen. Right here, notice this is the EventListener and the function for the Play button. So just beneath that, I am just going to go ahead and paste in that gesture swipe, right in here. And so what I want to do is I am going to go ahead and move the introScreen. In fact, the whole thing is going to be the button. So I am just going to copy that word "introScreen" and I am going to paste it right in here.

So when there is a Gesture Swipe that's performed on the introScreen, go ahead and fire off this function called swipeAway. Within this function, I can go ahead and tap into a couple of different properties. Say for instance, if there is the Swipe Left, which is the offsetX, okay. So if the offsetX is equal to negative one, it's going to move to the left. So Swipe Left is going to be minus one, and then if you want to go to the right, it's going to be one.

If you want to go up, then the offsetY is going to be minus one. And the offsetY, if you want to move it down, then it's going to be one. And that will move it down. All right! So these are the different swipes you can do. You can basically swipe any sort of object you want. But really in here in this if statement is where I can go ahead and do something. In this case, the thing I want to do is I just want to go ahead and move that screen off.

So if they swipe to the left, go ahead and call this function called moveScreenOff. So I am just going to copy that and paste it right in here, moveScreenOff. Well, what do I want to move off? I want to move off the introScreen. So again, if they swipe the left, just go ahead and call this function, pass in that screen name, and what this tween does is this actually moves it off to the left-hand side. It's really that simple. And again it's just a simple gesture swipe is what's going to happen here on the introScreen.

So normally, I would test it in Device Central. Device Central actually does have, if I do a Device Central test, it does actually have a Multi-Touch panel. But quite frankly, not all of the Multi-Touch features work in it. So the Gesture zoom, the Gesture rotate will work in here. But in this case, what I want to do is I want to test this out on an actual device to show you that this is working. So here's the game on an actual device. And what I want to do is I am just going to go ahead and swipe with one finger to the left.

And you can see I am actually right into the game, and I can start playing it. Again, gesture swipe is really easy to use, and it adds additional functionality that you can use in your game.

Show transcript

This video is part of

Expand all | Collapse all
  1. 1m 48s
    1. Welcome
      1m 0s
    2. Using the exercise files
      48s
  2. 7m 16s
    1. Understanding the user
      4m 2s
    2. Flash content on Android devices
      3m 14s
  3. 17m 28s
    1. Reviewing the game
      1m 50s
    2. Creating a file in Device Central
      5m 39s
    3. Reviewing the game structure
      8m 23s
    4. Adding code snippets
      1m 36s
  4. 36m 13s
    1. Animating the intro screen
      8m 13s
    2. Moving the player
      8m 13s
    3. Adding enemies
      6m 49s
    4. Adding movement
      4m 16s
    5. Adding chance and randomness
      8m 42s
  5. 34m 30s
    1. Adding lasers
      8m 14s
    2. Detecting collisions
      7m 57s
    3. Adding explosions
      6m 26s
    4. Removing assets from the stage
      8m 50s
    5. Adding audio
      3m 3s
  6. 33m 12s
    1. Adding scoring and levels
      7m 41s
    2. Subtracting lives and ending the game
      4m 26s
    3. Creating a results screen
      5m 8s
    4. Displaying the score
      6m 57s
    5. Saving and loading game results
      9m 0s
  7. 17m 14s
    1. Detecting movement with the Accelerometer
      6m 39s
    2. Using the swipe gesture
      4m 42s
    3. Using hardware keys
      5m 53s
  8. 23m 18s
    1. Handling exits and idle mode
      3m 31s
    2. Handling activation and deactivation
      6m 14s
    3. Optimizing graphics
      7m 14s
    4. Optimizing ActionScript
      6m 19s
  9. 34m 41s
    1. Creating the application files
      8m 23s
    2. Creating the app (Mac)
      5m 5s
    3. Creating the app (PC)
      7m 19s
    4. Publishing to an Android device (Mac)
      7m 7s
    5. Publishing to an Android device (PC)
      6m 47s
  10. 8m 56s
    1. Uploading to the Android market
      7m 7s
    2. Downloading from the Android market
      1m 49s
  11. 1m 22s
    1. Next steps
      1m 22s

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ .

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed Flash Professional CS5: Creating a Simple Game for Android Devices.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member ?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferences from the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Learn more, save more. Upgrade today!

Get our Annual Premium Membership at our best savings yet.

Upgrade to our Annual Premium Membership today and get even more value from your lynda.com subscription:

“In a way, I feel like you are rooting for me. Like you are really invested in my experience, and want me to get as much out of these courses as possible this is the best place to start on your journey to learning new material.”— Nadine H.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.