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iTorque 1.5 Universal on iPhone4

by Daniel Liverance · in iTorque 2D · 10/12/2011 (2:41 pm) · 14 replies

Hello,

I am currently working on a project for the iPad and I decided to try and run my game on the iPhone simulator.

It worked fine (congratulations on the good job for universal app support so far) but when I tried it on my iPhone 4, nothing showed up. I also switched the simulator to the iPhone (Retina) version and it mimicked the same result that I got on my iPhone 4 device.

I was just wondering, is there anything that I need to change in the TGB to get it ready for retina display? I didn't use any "HD" images, or try to use the "HD" checkbox, because I figured that it would just default to the original low res images anyways.


Any suggestions would be helpful.
Daniel Liverance's profile picture
Daniel Liverance
Blinker Studios

About the author

I am 21 years old, and have just recently graduated from College for Game Programming (with honours) and I am now the Lead Programmer at Blinker Studios.

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    Employee Michael Perry
    ZombieShortbus
    #1
    10/12/2011 (3:29 pm)
    @Daniel - It should be working out of the box. Can you provide a log from Xcode that is generated when you run on an iPhone 4 device? Just send it to me via e-mail.

    Employee Michael Perry
    ZombieShortbus
    #2
    10/13/2011 (6:10 am)
    Got the e-mail,. I'll read over it when I get to the office.

    Employee Michael Perry
    ZombieShortbus
    #3
    10/16/2011 (8:51 am)
    @Daniel - I'm able to reproduce this with my own project. I'm debugging this as we speak. As soon as I find the cause, I will post here and work on getting a hot fix uploaded. Let me know if you make any other discoveries.

    Another user, Craig, has also reported the problem.

    Employee Michael Perry
    ZombieShortbus
    #4
    10/16/2011 (9:21 am)
    I've isolated the problem in source code. I'm working on a solution now.

    Daniel Liverance
    Blinker Studios
    #5
    10/16/2011 (12:04 pm)
    excellent, I look forward to the hotfix.

    Employee Michael Perry
    ZombieShortbus
    #6
    10/17/2011 (6:12 am)
    The problem has to do with the resolution being set to double if the engine detects it is running on an iPhone 4. The fact that it works on landscape, but not in portrait, is baffling. When I hard set the resolution to 960x640, everything renders correctly. However, the actual window is incorrect.

    At any rate, I'm close to the solution.

    Daniel Liverance
    Blinker Studios
    #7
    10/17/2011 (7:08 am)
    haha, I agree, that is very strange. You would think it would show the same behaviour in landscape as it does in portrait.

    Any rate I'm glad to hear you are close to a solution.

    Thanks for all the attention that you are giving this issue

    Employee Michael Perry
    ZombieShortbus
    #8
    10/17/2011 (7:41 am)
    @Daniel - No need to thanks. I'm actually really upset it went out this way, so I appreciate your patience on resolving this.

    Employee Michael Perry
    ZombieShortbus
    #9
    10/17/2011 (7:52 am)
    Grr. Just as I thought. The camera is fine. The resolution the window is set up is just fine. However, the window is rotated off screen (!!!). If you enable the two rotation settings in the project tab, then start rotating (simulator or device), you will see it flash in quickly.

    I know where this is happening. I should have a fix shortly

    Employee Michael Perry
    ZombieShortbus
    #10
    10/17/2011 (11:33 am)
    Located the core problem, which is a set of hard-coded numbers being used for rotation. I'm putting together a simple calculation that will work for both landscape and portrait.

    Torque 3D Owner Pedro Vicente
    Space Research Software LLC
    #11
    10/17/2011 (2:16 pm)
    not sure if it's the same but I found a similar issue in my own retina implementation; solved here

    Torque Minimal Template -- Part 4. Retina Display

    Employee Michael Perry
    ZombieShortbus
    #12
    10/17/2011 (3:01 pm)
    Yup. The difference between your code and my code in 4 - changes in iPhoneOGLVideo.mm is the problem. I discovered something else wrong with the rotation code, but that got it running in the right location.

    Employee Michael Perry
    ZombieShortbus
    #13
    10/17/2011 (3:23 pm)
    Quick fix:

    1. Open engine/source/platformiphone/iPhoneWindow.mm

    2. Jump to the setScreenOrientation function

    3. Replace this:

    if( platState.portrait ) 
	{
		point.x = platState.windowSize.x / 2; 
		point.y = platState.windowSize.y / 2;
	} 
	else
	{
		point.x = platState.windowSize.y / 2;
		point.y = platState.windowSize.x / 2; 
	}

    4. With this:

    if( platState.portrait ) 
	{
        if([[UIScreen mainScreen] respondsToSelector:@selector(scale)] && [[UIScreen mainScreen] scale] == 2)
        {
            point.x = 320;
            point.y = 0;
        }
        else
        {
            point.x = platState.windowSize.x / 2; 
            point.y = platState.windowSize.y / 2;
        }
	} 
	else
	{
		point.x = platState.windowSize.y / 2;
		point.y = platState.windowSize.x / 2; 
	}

    Recompile and run. Everything should be in the right place. Thanks Pedro! Now I need to fix the dynamic rotation bug I discovered. Both fixes will be added to a new installer (hopefully uploaded tomorrow).

    Torque 3D Owner Pedro Vicente
    Space Research Software LLC
    #14
    10/17/2011 (7:17 pm)
    you're welcome. glad I can help somehow.