Is it possible (and easy) to compile this source code?

[byxor]

I don't see any makefiles, and I'm assuming this code requires additional libraries that we don't have access to.

[ericwomer]

The real problem right now is the legality of even looking at this code. As this isn't released via the copyright owners.

[LWSS]

The way they have it set up is that certain folders will have subfolders for each platform.
Like in Sys they have NGC for Nintendo GameCube, NGPS for the playstation, XBox for the xbox, and Win32 for windows.

In each of these folders there are cpp and h files starting with p_ for platform specific implementations.

Unfortunately it is missing some of the Win32 folders, in big parts like Gfx, Music, SoundFX, Movies.

It looks possible to build one of the console versions with the right toolchain, but for PC, you would have to do some work.

[byxor]

Just write our own. Easy! 😉

[ericwomer]

Just write our own. Easy! wink

Are you talking a complete rewrite or using an existing engine?

[byxor]

I was only joking, but if the platform-dependent code isn't that big, it wouldn't be too difficult to rewrite from scratch. I'm pretty sure CHC has done this before.

[ericwomer]

Its the legality of the issue, if we could get the current ip/source rights owners to sign off on it I would suggest taking out what we need, loading resources (models, images) and scripting (loading and running) and adding it to a compatible modern engine and go from there, if not, we would have to not look at the code and start from scratch to keep the lawers off our asses. I haven't looked much at the code, but from what I searched for online, its a renderware based game, like GTA and others, so I don't think its as complete as you think.

[LWSS]

@salamanderrake
sounds like ur making excuses bub

I haven't looked much at the code

I don't think its as complete as you think

how can you make this conclusion 🤔

[ericwomer]

Simple, because it was released by a studio, someone in the studio, or had access to the code, that didn't have rights to the code to the renderware engine its self, kind like how helium rain released their game code minus the UE4 engine its self and the 3d party stuff from the ue4 market. Also where is the documentation and the build scripts? They either had access to only one folder or they decided to only copy one folder.

[swift502]

To me, it feels very complete in terms of gameplay mechanics. We can now replicate the exact gameplay of Tony Hawk. We have the exact "magic values". And everything is very nicely commented. (In a Neversoft fashion)

thug/Code/Gel/Music/ngc/bgm/bgm_play.c

Lines 792 to 797 in d8eb714

	/* ----------------------------------------------------------------
	* End on File
	* ---------------------------------------------------------------- */
	/* This file ends here, DON'T ADD STUFF AFTER THIS */
	// Ha ha I added some stuff... FUCK YOU SONY!

The most interesting stuff seems to be in SkaterCorePhysicsComponent.cpp, that's where we could never be sure until now. Few other SkaterComponents and I think you're done. Sipmly offload everything else (assets, rendering, etc.) onto a different engine.

I'll attempt at doing this but it is indeed a massive project to take on. I'll see how it goes for me. I must say though, I was very excited to see that about 90% of my predictions on how acid drops, spine transfers and verts work were correct. Feels good. 🙂

@thug1src @salamanderrake Btw when was this leaked? 2016? How did I miss it? And why thug of all games?

[ericwomer]

Commits on Feb 13, 2016 from what the commits say. Like I said before, my only concern is the legality of it all, its nice to have the code, but it would suck to start on this, just to have some piss-poor lawer jump up our asses and shut it down. I've seen it done to the wine project with the windows 2000 leaks and bits of that being pushed into trunk.

[swift502]

I was thinking about rewriting the important bits in a different language (C#, javascript, ...). I can't imagine someone connecting your polished rewrite and integration into something like Unity with this leaked code. I might be wrong though.

But looking further into the code, I'm not so sure any of this is a great idea.

Whenever you stop tracking a ramp, there's about 14 raycasts just to make sure you're really off a ramp.

thug/Code/Sk/Components/SkaterCorePhysicsComponent.cpp

Lines 5039 to 5045 in d8eb714

	// there is no collision, which usually mean we have gone off the end of a qp but might mean the tracking point has drifted off the top
	// of the very polygon (it might not be exactly horizontal), so try tracking down up to 30 inches to see if we can find it again
	for (int i = 0; i < 10; i++)
	{
	m_col_start[Y] -= 3.0f;
	m_col_end[Y] -= 3.0f;
	collision = get_member_feeler_collision(0, mFD_VERT);

And when acid dropping / spine transfering, there's 80 raycasts to find out if there's something you can transfer to.

thug/Code/Sk/Components/SkaterCorePhysicsComponent.cpp

Lines 3298 to 3307 in d8eb714

	bool CSkaterCorePhysicsComponent::look_for_transfer_target ( const Mth::Vector& search_dir, const Mth::Vector& start_normal, bool& hip_transfer, Mth::Vector& target, Mth::Vector& target_normal )
	{
	// take a bunch of steps forward until we find one
	// This is not very good, as we have to do 80 collision checks....
	// we really need to optimize our collision detection to be able to select a set of "nearby" object
	// or to select a set that intersects a sphere, or a plane
	// (here, we could just get the set that intersects the plane)
	// this could be statically cached by the colision code, and have one set
	// or perhaps more flexibly, each "feeler" could have a set of objects
	// that it deals with (defaulting to the set of all objects)

I thought we could easily port the key mechanics something like Unity physics, but the algorithms are incredibly primitive and rely on the optimized custom physics that they have going. And I think it would be very challenging to optimize it properly in a different engine.

In short, doing anything with this is probably a bad idea for several reasons. It's nice to explore and get inspired if you wanted to potentially make your own Tony Hawk game, and it would be nice to have the latest version (THPG) of these algorithms, but that's about it.

[ericwomer]

There are engines from Godot to UE4 that could be used.

[ericwomer]

@swift502 @LWSS @byxor It looks like who ever leaked this (if its even a leak or what) tried to updated it at least after 2011 (C++11)

thug/Code/Core/Debug/XBox/p_debug.cpp

Line 335 in d8eb714

uint* ptr = reinterpret_cast< uint* >( 0x00000001 );

It looks like someone tried to updated the code, so this may not be vanilla or maybe, like in the code it suggests, may be for other versions of the games. There is also a main in the code,

thug/Code/Sk/Main.cpp

Line 245 in d8eb714

int main ( sint argc, char** argv )

, so it suggests that the game is here, weather or not the renderware side of it or other deps are here is another question.

[LWSS]

@salamanderrake
reinterpret_cast is older than C++11

I do know that they were using gcc, because I saw some __attribute__ when I was trying to get it to compile.