Guys, I have tried to use AnimationDrawable and could never get to make it work.
This is what I've tried to do: http://groups.google.com/group/android-beginners/browse_thread/thread/12b1af591d8dfbf0?hl=en Grateful for any insights from any of you. Cheers Cass On May 18, 11:36 am, ayush <ayushv2...@gmail.com> wrote: > there is no Sprite class available like the one in J2ME. like nicholas > suggests - u might want to write your own custom sprite class with the > same functionality. i managed to avoid it on my current project, but i > guess sooner or later i'll have to write my own game API. here is what > i have in mind: > > 1) the basic Sprite class will extend the BitmapDrawable class in the > android.graphics.drawables package > 2) the new extended class will have a Rect or a RectF member variable > to keep track of its position on screen. The Rect and RectF classes > already have useful methods that can be used for detecting collisions > 3) the BitmapDrawable class has an existing setBounds() method which > contains the actual position to draw the screen > > the methods for translating / scaling a bitmap within its bounds > are not very useful especially when you have a number of "frames" in > your sprite. perhaps u'll need to have an array of bitmaps where each > bitmap represents one frame in the animation. again - this will be > specific to the game at hand. > > actually, ALL of the above tasks, including the animation > functionality can be implemented using the AnimationDrawable class > that is part of the same graphics package as BitmapDrawable. however, > despite many attempts i was unable to get it to work in my program. > the animation never moved beyond the first frame. apparently other > people have faced the same problem ... but i am yet to receive a > response to my query posted a few weeks ago. after extensive googling > on the subject i came across some complicated solutions, but i never > got round to implementing them coz i really didnt need animation in my > current project. i managed to create a workaround using static images > instead. > i'd suggest u try AnimationDrawable once ... if it works then it > will solve all your problems. > > ~ayush. > > On May 17, 8:31 pm, Nicholas Radford <nikradf...@googlemail.com> > wrote: > > > Take a look at > > <http://developer.android.com/reference/android/graphics/Canvas.html#d..., > > android.graphics.Rect, android.graphics.RectF, > > android.graphics.Paint)>http://developer.android.com/reference/android/graphics/Canvas.html > > > drawBitmap calls, (if your using the Android graphics and not the OpenGl > > graphics libs) > > > You'll see this one in particular > > > drawBitmap<http://developer.android.com/reference/android/graphics/Canvas.html#d..., > > android.graphics.Rect, android.graphics.RectF, android.graphics.Paint)>( > > Bitmap <http://developer.android.com/reference/android/graphics/Bitmap.html> > > bitmap, > > Rect<http://developer.android.com/reference/android/graphics/Rect.html> > > src, > > RectF<http://developer.android.com/reference/android/graphics/RectF.html> > > dst, > > Paint<http://developer.android.com/reference/android/graphics/Paint.html> > > paint)Draw the specified bitmap, scaling/translating automatically to fill > > the destination rectangle. > > > Where Bitmap is your Sprite sheet, src is a rectangle on your sprite sheet > > (just the section you want to draw) and dst is a destination rectangle on > > the canvas (where you want to draw it), and paint is your paint object. > > > I'd give example code, but I've not actually written anything for android > > yet, so my example code would not be the best to learn from. Hopefully > > though, that function will show you the way. > > > Nik > > > 2009/5/17 G. Murat Taşbaşı <gmt...@gmail.com> > > > > Hi guys, > > > > For a 2D game programming, I'm trying to learn about loading an > > > image file for all states of a game character (simply a walking soldier > > > lets > > > say) and simply animate it. I think this classic method is called as > > > sprite > > > imaging that you load whole image of all states of the character that you > > > want to animate. > > > > Is there anyone that can provide some sample code about this or at least > > > can you tell me which classes to use, how to refer some 'part of' whole > > > image file and animate it etc. > > > > Your help is much appreciated. > > > > Thanks a lot. > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" group. To post to this group, send email to android-beginners@googlegroups.com To unsubscribe from this group, send email to android-beginners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~----------~----~----~----~------~----~------~--~---
