Hi miguel, thanks for the response. Afaik. Every example game written by the google guys has a inner thread class in the gameview. But i think only for sharing variables of the gameview. Not quite sure if there where any other advantages gc wise.
Normally locks a more a timesink and slowing down the thread, or is there a case where it can speed up performance. And from the normal java world. Locks like synchronized where needed while multithreading. Do you have more threads working on some objects? Currently i have 1 thread running for the surface view. This thread has a instance variabel gamedata where everything is happening. All lists of game objects are located in the gamedata object. Maybe this is a archtectural flaw ? The game view implements the touchlistener an delegates the inputs to the thread via thread save queue. The other direction, like the thread send a value to the score textview happens via messagehandler who delegates the msg to the referenced views. I think i rewrite a test project focussing on testing how i get rid of the hiccups. On 15 Sep., 00:09, Miguel Morales <therevolti...@gmail.com> wrote: > > How are you avoiding String Concatenation ? TextFields as a Example > > only take Strings > > I don't really use this myself because I don't really strings in inner loops. > First, you want to make those time elements draw/update as least as possible. > If not, you can use a string > buffer:http://developer.android.com/reference/java/lang/StringBuilder.html > > A) Don't know, ddms works great for me. Try using it outside of > eclipse, it works better by itself. > b) I don't think there is a way, try playing with ddms. (I believe > outside of eclipse it has more features) > c) Depending on how you communicate with your inner/display thread, I > use locks for speed. > > > > > > On Tue, Sep 14, 2010 at 2:39 PM, Andreas <andreas.k...@googlemail.com> wrote: > > 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 <therevolti...@gmail.com> 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 <andreas.k...@googlemail.com> > >> 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 <jtgi...@gmail.com> 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 > >> >> <andreas.k...@googlemail.com>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 > >> >> > android-developers@googlegroups.com > >> >> > To unsubscribe from this group, send email to > >> >> > android-developers+unsubscr...@googlegroups.com<android-developers%2Bunsubs > >> >> > cr...@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 > > >> -- > >> ~ Jeremiah:9:23-24 > >> Android 2D > >> MMORPG:http://developingthedream.blogspot.com/,http://diastrofunk.com,http:/... > > > -- > > 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 > > -- > ~ 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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