VITA: add ability to invoke app with game path provided via boot parameter

[cy33hc]

I'm the author of the Vita homebrew app called Vita-Launcher (https://github.com/cy33hc/vita-launcher). I want to add support for booting EastRPG games directly from my app. This requires some changes in EasyRPG to read the boot params passed from my app to start the game.

Let me know if you have any questions.

And before my change, the psvita build is crashing on startup. 0.7.0-stable is working fine.

[Ghabry]

@cy33hc
Thank you for your contribution!

So the sceAppMgrGetAppParam are not provided as argc/argv by the startup code. That is unfortunate. As a follow-up to #2781 the new psp2_main.cpp could transform them. They are in normal URI-format so shouldn't be too hard. But as a short-term solution your contribution is fine.

[cy33hc]

Thx @Ghabry for reviewing. I also found the commit #8de4c7d3344f82449d61e6b7ac505cc3e6cbe6eb broke the psvita build. I spent an hour building backward and found this commit.

[Ghabry]

@cy33hc
Thanks!

I also found an additional issue causing the breakage: We built vita2dlib on our buildbot incorrectly.

So in a few days everything should run again :D

[cy33hc]

@cy33hc Thanks!

I also found an additional issue causing the breakage: We built vita2dlib on our buildbot incorrectly.

So in a few days everything should run again :D

I don't think it's broken by vita2dlib. I reverted commit 8de4c7d in a branch and it works perfectly fine.

[carstene1ns]

What he meant was that our official build is broken in 2 ways. 😅

[Ghabry]

What he meant was that our official build is broken in 2 ways.

Yeah but Vita3k only cares about the vita2dlib one.

I cannot revert the commit because empty string is actually used for the working directory (converted to . in the platform class) and in ZIP files for the root. But by now I'm pretty sure why this code is crashing for you. I will add a fix to #2787

[Ghabry]

looks fine to me.

Any improvements to the parser can land in #2781

[Ghabry]

@cy33hc Could you test if the latest source from master fixes the crash for you? (Without reverting #8de4c7d3344f82449d61e6b7ac505cc3e6cbe6e)

And please compile yourself, our buildbot-version is still broken. :)

[cy33hc]

@Ghabry Compiled from master and it is still crashing on startup. How to enable debug and where does the file get created?. I can try do a debug build to grab the logs.

[Ghabry]

@cy33hc Thanks for the offer to help. Please update master again. Now everything should be in that was related to Vita (except your PR). A debug build is not really needed. The logging also works in Release.

Then here https://github.com/EasyRPG/Player/blob/master/src/directory_tree.cpp#L26 Remove the comment before #define EP_DEBUG_DIRECTORYTREE.

Then the error logging will be much more verbose.

If the logfile is not being created (should appear in ux0:/data/easyrpg-player you can try hardcoding a different path here: https://github.com/EasyRPG/Player/blob/master/src/output.cpp#L85

Change this e.g. to FileFinder::Root().OpenOutputStream("ux0:/data/easyrpg.log", std::ios_base::out | std::ios_base::app);. Then the logfile is created in ux0:/data.

[cy33hc]

@Ghabry It's fails to compile now. Getting the following error message. It seems like the vita2dlib has some hardcoded references to the shaders that were removed.

libvita2d/source/vita2d.c:362: undefined reference to `opaque_v'

[carstene1ns]

You need upstream libvita2d, not fbo-patched version.
EasyRPG/buildscripts#129

[cy33hc]

@Ghabry Great. I recompile from master with libvita2d lib and no more crashes.

[carstene1ns]

One minor thing, please use 'project-path' (with hyphen) for consistency with our official arguments.

[cy33hc]

@Ghabry @carstene1ns Updated project_path to project-path.

[carstene1ns]

Thank you! :)