A fast, easy to use, free, and community supported 2D game engine
srikanth
Member
I have developed a game for iPhone using coco2d 0.99.3. I want it to work on iPad. I have the new images which are bigger in size and resolution than iPhone images. Can, I just replace the images and make it work. Or shall I add any frameworks to make it work in iPad.
Thank You.
robodude666
Member
First of all, you'll need to upgrade your target to support the iPad. You can do this by right clicking on your game's target and selecting the upgrade option.
You'll be greeted with a message asking if you want to have one or two applications published. The choice is up to you.
Afterwards, add the higher resolution artwork, and modify your code to select the proper art based on the device. You'll also need to make sure coordinates (for ccp(x,y) for example) aren't hard coded (like ccp(240,160)) and instead calculated based on the winSize of the CCDirector, etc.
It would also be a wise idea to go through the project and target settings and make sure everything there is correct.
-robodude666
srikanth
Member
@robodude666
I did all the things you have stated above. But, still the images ate appearing small in the iPhone simulator inside iPad simulator. Should I change anything in appdelegate ?
Thank You.
robodude666
Member
How are you handling the two different image sizes?
I personally haven't made an iPhone/iPad Projects, so I don't know if Apple handles them for you. I'd imagine you need to determine which platform the user is on and select the right images manually. A clever custom class can help you too.
There might be a better way, not sure.
srikanth
Member
@robodude666
I have the images of 1024x768 size for iPad. so I am using them.
ThankYou.
srikanth
Member
Now it is working fine, but
I got the fps problem. In iphone simulator I used to get 50 - 60 fps and even in iPhone device I used to get 50 above fps.
But, in ipad simulator the fps is very low, it is below 10fps. I could not understand where is the problem. What should I do to raise the fps ?
Thank You.
@srikanth: Performance should be tested on real devices, not on the simulator... The speed of the simulator can be much faster or slower than the real device.
@robodude666: 1024x1024 images on the iPad, at least on my tests, have a very good performance.
@srikanth:
VERY IMPORTANT: Don't optimize code based on the results of the simulator! Use real devices for this purpose.
2048x2048 textures are fine too, only if you are going to render 2 or 3 (but not more) at the same time.
robodude666
Member
riq, I'm only speaking based on what I've read from others in the forums. For all I could know, rendering these textures actually works very well and they're doing something wrong.
In either case, srikanth, play around and try different things. And like riq said, use the device for testing if you can.
The simulator only simulates the hardware and may actually be faster or slower. If you optimize for the simulator you'll get good results on the simulator but you may end up getting bad results on the hardware.
If you have a device to test with and see bad performance try using Shark to profile the app. This will tell you where your application is spending the most resources/time on and know what to optimize.
-robodude666
srikanth
Member
Hi,
I run the app in the iPad. But it was crashing by giving the following message in terminal.
Program loaded.
target remote-mobile /tmp/.XcodeGDBRemote-6258-64
Switching to remote-macosx protocol
mem 0x1000 0x3fffffff cache
mem 0x40000000 0xffffffff none
mem 0x00000000 0x0fff none
continue
The program is not being run.
The program is not being run.
I used instruments tool there is sudden increase in memory to 32MB before crashing. It is crashing at CCSpriteFrameCache .
I used 2048x2048 sprite sheets. What can I do ?
Thank you.
srikanth
Member
@riq
I used more than 4 sprite sheets. 5 of 2048x2048 and 3 of 1024x1024. But not all are active at same.time.
Player entrance have a sprite sheet and his animation, then player gun draw animation sprite sheets, and player win animation sprite sheets. All these occur one after the other but in same scene.
So, according to you I could not use more than 3 sprite sheets of 2048x2048 . But i need all the animation in one scene.
Should I use spriteSheets for some animations and only sprite animations for some animations ?
Thank You riq.
srikanth
Member
@riq
While running on the device (iPad) I got the following problem.
The memory at starting point in Scene is 1.4MB. It is raising to 33MB and again dropping to 1.4MB after completion of the scene.
But, sometimes the application is crashing when the memory is raising to 33MB.
I used
[[CCTextureCache sharedTextureCache] removeUnusedTextures];
[[CCSpriteFrameCache sharedSpriteFrameCache] removeUnusedSpriteFrames];after every animation that is created by using CCSpriteSheet. I used Zwoptex for CCSpriteSheet creation,
How can I stop my app crashing ?
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