How are you avoiding String Concatenation ? TextFields as a Example only take Strings And if you have a Score, or Time Element that Shows Some Numbers i wasn't able to get around creating a String implicitly.
Currently i'am testing on my Motorola Milestone. On the Emulator it even runs slower with constant hiccups. Some other Problem while researching the hiccups: a) Currenty the Method Profiling in Eclipse isnt' working because of a error "Unable to open trace file 'sdcard/com.an........trace' : Permission Denied. Kind of Strange because a added <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> already in the Manifest. b) Is there any way that logcat shows which objects where recycled ? Currently it only says GC freed xyz Simply because the Allocation View don't show me Thread Objects that may cause the GC to run so often. c) Is there any big disadvantage if the GameThread is a "outer Thread"..not like in all the examples (there it.s a inner class) thanks 4 feedback On 14 Sep., 22:45, Miguel Morales <[email protected]> wrote: > Are you using the emulator or a hardware device for testing? I'm sure > there's gotta be something that's allocating in your code. In my > personal experience, I've gotten the GC down to once a minute at the > worst. A lot of the time you can't fully get rid of GC hiccups > because of background applications that allocate objects. > > Make sure you're not appending any string, check any other background > code that's running (like your logic loop). You have to make sure > there's no allocations throughout any long running or looping code. > > I'm fairly sure the canvas onDraw method doesn't allocate anything by > itself, and you can get some decent performance out of it without > going to openGL. > > I'm sure you've seen this but just in > case:http://code.google.com/events/io/2009/sessions/WritingRealTimeGamesAn... > It outlines some common pitfalls. > > > > On Tue, Sep 14, 2010 at 1:02 PM, Andreas <[email protected]> wrote: > > to 1) > > > Did that already. I ruled out everything that was creatinglike shadow > > Copies or String Concat. I re-implement my own FastList instead of any > > ArrayList oder Hashmap. > > To there is nearly nothing that is created intentionally. But the GC > > is anyway running every couple of seconds. Sometimes only 50 ms > > somtimes 500 ms. The thing > > might be, hat you can't tell the GC that he should hold on for some > > time. It's not in my hands, and since everything in 2d drawing and > > standard Android Libs is in the > > GC domain and will be interrupt the game for some ms. > > > 2) i think i have about max 100-150 Objects moving around in my > > screen. + the "not moving" static objects. I tested it with 200 > > Objects but the only flaw i saw was the GC hiccups > > issue. > > > 3)opengl has a hard learning curve. And since i develop Java for about > > 10 Years now i thought i could handle the graphic stuff via the > > canvas / draw architecture. Since this might be a KO Criteria I'm > > kind of afraid to rewrite my game to use the andengine. > > I've already read about it...and saw some examples...but I'm not sure > > if how long it will take to get me going with this engine. I would > > love to see a engine i could "plug in my app". I design my app that > > way, that i have 2 major methods called in my game loop > > > upateGameData() > > and > > drawGameData() > > > in the draw Method i iterate over all different gameObect Lists...like > > > drawMonsters(c) > > drawMissels(c) > > drawStaticBlabla(c). > > > UpdateGameData does the Math (e.g. positioning for animations )and is > > kind of unrelated with drawing besides some things the Update Methods > > have to know....like Resolution / Borders . > > > everything that can be draw on a canvas has to implement a update(c) > > method where the object draws itself. Would be cool to replace the > > "c" for canvas with a OPenGL maybe Andengine Surface but i don't think > > that's gonna be the case. Would be to nice ^^ > > > On 14 Sep., 15:39, Justin Giles <[email protected]> wrote: > >> Just a few moderately uninformed comments/questions... > > >> 1) Use DDMS and MAT to try to nail down any possible memory issues that you > >> might be overlooking. > > >> 2) Canvas 2D does have significant limitations compared to OpenGL when it > >> comes to a large number of sprites on the screen at once. Is this a > >> possible issue for you? > > >> 3) You might check out Andenginehttp://www.andengine.org(notaffiliated > >> with them). It is a 2D opengl framework that is a whole heck of a lot > >> easier to get a 2D game up and running than using raw openGL (in my > >> opinion). > > >> Justin > > >> On Tue, Sep 14, 2010 at 7:44 AM, Andreas > >> <[email protected]>wrote: > > >> > Hi Folks, > > >> > im currently playing around with a Game that architecture is basically > >> > like the example 2d Games like JetBoy / LunarLander and so on. But as > >> > things now running (and animating continuously) they have kind of > >> > "hiccups" when the GC is running. I have done all i can to allocate as > >> > much Objects in front. There is nearly nothing that is created "new" > >> > besindes some Strings that are used to set the Score and so on. > >> > (TextView doesn't take int's =( - > > >> > So do you have similar Problems that the GC is "lagging" your 2s > >> > game ? any solutions ? > > >> > Thanks for suggestions > > >> > -- > >> > You received this message because you are subscribed to the Google > >> > Groups "Android Developers" group. > >> > To post to this group, send email to [email protected] > >> > To unsubscribe from this group, send email to > >> > [email protected]<android-developers%[email protected]> > >> > 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 [email protected] > > To unsubscribe from this group, send email to > > [email protected] > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en > > -- > ~ Jeremiah:9:23-24 > Android 2D > MMORPG:http://developingthedream.blogspot.com/,http://diastrofunk.com,http://www.youtube.com/user/revoltingx -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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