[android-developers] Re: 3D Physics Engine For Android Demo
Relax, 2.1 will come to your droid starting this week. http://androidandme.com/2010/03/news/verizon-droid-does-android-2-1-this-week/ On Mar 16, 11:54 pm, Kevin Duffey andjar...@gmail.com wrote: Well if it makes you feel any better, us Moto Droid owners were supposed to have an Android experience phone, where we would get updates as soon as they came out, or soon after. We have been waiting for the 2.1 update for over 2 months now, with no information from anyone regarding when we'll ever see it. It's a bunch of crap really. Nexus already had another update from what I understand and we're still waiting for 2.1 for some unknown reason. I don't mind waiting as much as the lack of information coming from moto/verizion/google. I would like the 2.1 update for the extras, and I don't want to root my phone either. On Tue, Mar 16, 2010 at 6:35 PM, Greg Donald gdon...@gmail.com wrote: On Tue, Mar 16, 2010 at 4:52 PM, Martin google-gro...@digle.de wrote: So bad that I cannot test it on my HTC Hero, because I have Android 1.5 :-( Sucks to be us :( My Hero was cool right up until I realized 1.5 sucked and HTC was in no hurry to update it. -- Greg Donald destiney.com | gregdonald.com -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en- Hide quoted text - - Show quoted text - -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: 3D Physics Engine For Android Demo
There's a couple of choices, none of them will work fast enough if you use the Java implementations. Popular choices are Chipmunk (http:// code.google.com/p/chipmunk-physics/) and Box2D (http:// www.box2d.org/). There's also a Java port of Box2D which is called JBox2D (http://www.jbox2d.org/) i really wouldn't recommend using it though. It horribly leaks memory due to small object instantiation when contact points are resolved. You best bet will be to write a JNI bridge for Box2D or Chipmunk. Both compile easily with the NDK provided you have a proper Android.mk file. On 17 Mrz., 15:37, Jiri jiriheitla...@googlemail.com wrote: Sorry to be off topic, but can somebody also point me to a 'decent' _2d_ physics engine. I seen a few, but i was wondering what the general consensus is about the 'most' reliable one in terms of steady/continues development. Cheers, Jiri On 15/03/2010 15:25, Kevin S. wrote: I've completed my first Android application. It as 3D demo with a physics engine. It uses the phone's accelerometer so that you can shake the world by moving the phone around. There are options to adjust things like gravity, friction, and elasticity. The physics engine is a 100% Java port of the open source JigLib physics engine. However, I only have a Motorola Droid, and I don't know if it will work on any other phone. The project is set to use Android 1.6. Before I put it in the market, I was hoping to get some feedback from the developer community here. If anybody is interested in 3D stuff or physics simulation, you can give the app a try. The link is on the follow page. There is a screen shot there so you can get an idea of what the app is. http://www.pieintheskysoftware.com/menuitem-resources-pie-3d-physics-... -Kevin -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: 3D Physics Engine For Android Demo
You didn't have any 1.x feedback, so I thought I'd kick in... Works OK on my G1 (stock 1.6), but I only get 5-6 fps. So obviously, there would be some performance issues for real-time games or other interactive uses. But it does work. String On Mar 15, 5:39 pm, Kevin S. dada...@gmail.com wrote: Thanks very much for the feedback Streets, Marc and Mario... I spent a lot of time using the profiler in a Windows version to reduce the allocation, but I still may need to work on it a bit more. When I was looking at physics engines before JJigLib I tried ODE4j, but it was too slow. I didn't see JBullet at the time. Thanks for the tip on JStackAlloc. Thanks for the extra points! -Kevin -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: 3D Physics Engine For Android Demo
So bad that I cannot test it on my HTC Hero, because I have Android 1.5 :-( -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: 3D Physics Engine For Android Demo
On Tue, Mar 16, 2010 at 4:52 PM, Martin google-gro...@digle.de wrote: So bad that I cannot test it on my HTC Hero, because I have Android 1.5 :-( Sucks to be us :( My Hero was cool right up until I realized 1.5 sucked and HTC was in no hurry to update it. -- Greg Donald destiney.com | gregdonald.com -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: 3D Physics Engine For Android Demo
Well if it makes you feel any better, us Moto Droid owners were supposed to have an Android experience phone, where we would get updates as soon as they came out, or soon after. We have been waiting for the 2.1 update for over 2 months now, with no information from anyone regarding when we'll ever see it. It's a bunch of crap really. Nexus already had another update from what I understand and we're still waiting for 2.1 for some unknown reason. I don't mind waiting as much as the lack of information coming from moto/verizion/google. I would like the 2.1 update for the extras, and I don't want to root my phone either. On Tue, Mar 16, 2010 at 6:35 PM, Greg Donald gdon...@gmail.com wrote: On Tue, Mar 16, 2010 at 4:52 PM, Martin google-gro...@digle.de wrote: So bad that I cannot test it on my HTC Hero, because I have Android 1.5 :-( Sucks to be us :( My Hero was cool right up until I realized 1.5 sucked and HTC was in no hurry to update it. -- Greg Donald destiney.com | gregdonald.com -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: 3D Physics Engine For Android Demo
Works pretty well on my Nexus One. I get about 30 - 35 frames a second. On Mar 15, 10:25 am, Kevin S. dada...@gmail.com wrote: I've completed my first Android application. It as 3D demo with a physics engine. It uses the phone's accelerometer so that you can shake the world by moving the phone around. There are options to adjust things like gravity, friction, and elasticity. The physics engine is a 100% Java port of the open source JigLib physics engine. However, I only have a Motorola Droid, and I don't know if it will work on any other phone. The project is set to use Android 1.6. Before I put it in the market, I was hoping to get some feedback from the developer community here. If anybody is interested in 3D stuff or physics simulation, you can give the app a try. The link is on the follow page. There is a screen shot there so you can get an idea of what the app is. http://www.pieintheskysoftware.com/menuitem-resources-pie-3d-physics-... -Kevin -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: 3D Physics Engine For Android Demo
Tried it on my Milestone. Pretty neat. The fps degrade to around 12-15 after some time (essentially when the big plate starts to touch the ground completely) probably due to there being a lot more contact points then. Also, the garbage collector is getting a fair amount of work to do every 5 seconds or so. I don't know much about JigLib but maybe you could make it so that it uses JStackAlloc. JBullet uses that library and has no garbage collection at all. I put together a simple JBullet demo a while back, you can find information on that at http://apistudios.com/hosted/marzec/badlogic/wordpress/?p=81. I do not recommend using a pure Java based physics library at this point for a full featured game unless the scene is really really simple. Consider using bullet via the NDK. You get extra points for implementing the activity life cycle correctly :) On 15 Mrz., 15:43, Marc Lester Tan mail...@gmail.com wrote: Works well on my Nexus One. Cool! On Mon, Mar 15, 2010 at 10:25 PM, Kevin S. dada...@gmail.com wrote: I've completed my first Android application. It as 3D demo with a physics engine. It uses the phone's accelerometer so that you can shake the world by moving the phone around. There are options to adjust things like gravity, friction, and elasticity. The physics engine is a 100% Java port of the open source JigLib physics engine. However, I only have a Motorola Droid, and I don't know if it will work on any other phone. The project is set to use Android 1.6. Before I put it in the market, I was hoping to get some feedback from the developer community here. If anybody is interested in 3D stuff or physics simulation, you can give the app a try. The link is on the follow page. There is a screen shot there so you can get an idea of what the app is. http://www.pieintheskysoftware.com/menuitem-resources-pie-3d-physics-... -Kevin -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: 3D Physics Engine For Android Demo
Thanks very much for the feedback Streets, Marc and Mario... I spent a lot of time using the profiler in a Windows version to reduce the allocation, but I still may need to work on it a bit more. When I was looking at physics engines before JJigLib I tried ODE4j, but it was too slow. I didn't see JBullet at the time. Thanks for the tip on JStackAlloc. Thanks for the extra points! -Kevin -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
