1144 replies to this topic

[theludicrous]

wow, it looks a lot better when its gray, here you go:


thanks for the complement

[Maarten Baert]

Great! And with alpha channel !

Unfortunately I haven't had that much time to work on the code because I had to study. It will take a bit longer than I expected to finish v2.0.

[theludicrous]

Great! And with alpha channel !

Unfortunately I haven't had that much time to work on the code because I had to study. It will take a bit longer than I expected to finish v2.0.

I cant wait (literally) but take your time, its better to release a quality engine slowly than a sketchy engine quickly

[Maarten Baert]

During the rewrite I got stuck all the time because I was trying to add too many new features at the same time. So I have decided to finish the rewrite first without these features and release it (v2.0) and add the features later (v2.1). That way I will be able to release it faster, and it will probably be more stable as I am only reusing features I have tested already.

[theludicrous]

During the rewrite I got stuck all the time because I was trying to add too many new features at the same time. So I have decided to finish the rewrite first without these features and release it (v2.0) and add the features later (v2.1). That way I will be able to release it faster, and it will probably be more stable as I am only reusing features I have tested already.

What are these features you talk about?

[wargasm]

/*

I used this program to test if all functions of the DLL worked. This is NOT a good example for using ExtremePhysics
in a game. All tests use debugdraw for graphics because this is easier, but you should NOT do this in a real game!
If you need an empty engine, use empty_engine.gmk

*/

Where is this empty_engine.gmk file? It's not packaged with the zip and I've searched the forum to see if there's a download but can't find one.

Edited by wargasm, 09 October 2009 - 11:18 AM.

[wargasm]

I'm playing around (while learning GML) and here is what I have so far. I'm simply attempting to create a box with gravity. The comments are what I assume i'm doing.....

// Initiate the dll? Not sure how this works yet.
ExtremePhysics_init();

// Initiate the GML functions?
ep_gmfunctions_init();

// Create a world for the physics objects. I'm assuming the function returns the world id which I am setting to the arena variable. No parameters to set the world position and dimensions? Default = room size?
arena = ep_world_create();

// Create a box (is this just a collision box or should it be visible?) for my player object which atm is just a 64x64 box sprite. I'm assuming the last 2 parameters are a boolean and float. (rotation 0/1, density 0-X.....X being whatever the maximum density is).
ep_object_component_create_box( arena, ob_Player, 64, 64, 320, 320 ,1, 1 );

// Set the gravity of the player object. Assuming last 2 parameters (x, y) to be floats.
ep_object_set_gravity( arena, ob_Player, 0.5, 0 );

// Set the mass of the player object. Assuming the last parameter (mass) to be a float.
ep_object_set_mass( arena, ob_Player, 0.5 );

When running this im given the error "ep_object_set_gravity: Can not set gravity of ground object in world 1".

Where am I going wrong and can someone please clarify on the questions in the comments? Thanks.

Edited by wargasm, 09 October 2009 - 01:08 PM.

[theludicrous]

/*

I used this program to test if all functions of the DLL worked. This is NOT a good example for using ExtremePhysics
in a game. All tests use debugdraw for graphics because this is easier, but you should NOT do this in a real game!
If you need an empty engine, use empty_engine.gmk

*/

Where is this empty_engine.gmk file? It's not packaged with the zip and I've searched the forum to see if there's a download but can't find one.

yeah, where is it?

[Maarten Baert]

It's not finished yet and I had forgotten I had mentioned it. This is just an alpha version, not the final engine (I still have to make a .gex and a help file).

[theludicrous]

So, hows the engine going?

[Maarten Baert]

Better, I finally managed to install Visual C++ on this computer, so I can compile the DLL in VC++ now. VC++ seems to generate faster code so this will make the DLL even faster . But there is still a lot of work to do, though.

I was wondering, what would be the best way to use the engine in C++?

• adding all source files to the project and compiling it yourself:
  + no external files
  + works with all compilers
• using one header file and a library:
  + no external files
  + easy to switch to a newer version
• using one header file and a dll:
  + generates the same code for all compilers
  + easy to switch to a newer version
  + possible use the same DLL for both C++ and GM

What do you think?

[PsichiX]

IMO

using one header file and a dll:

good idea

possible use the same DLL for both C++ and GM

bad idea. some data types for c++ version will be better than double. So make LIB for c++ version, and wrap it to GM version.

[Maarten Baert]

No, I meant putting all functions in one DLL: C++ classes and c-style (GM) functions. GM will just ignore the classes and C++ can use them.

So make LIB for c++ version, and wrap it to GM version.

I don't want to recompile two projects every time I make a change to the code, just to test it .

[theludicrous]

I wish I could help you on this Maarten but I know little to nothing in C++

[hanson]

I don't want to recompile two projects every time I make a change to the code, just to test it .

In that case, I would suggest a dll that is usable by both C++ and GM. The file size would be slightly increased, but would be easier for you to maintain. Basically one would create the functions optimized for C++ and then create wrapper functions for GM that recast value types as needed. There's my 2 cents.

-hanson

[Maarten Baert]

Never mind, I found the solution:

Using project dependencies
Project dependencies are a simple way to tell Code::Blocks that a given project "depends" on another (in the same workspace, always).
Thus imagine in your workspace you have a library project and an executable project which depends on the library. Then you could (and should) tell Code::Blocks about this dependency. To do this, you select "Project->Properties" and click the "Project's dependencies.." button.

I will just create a GCC library and a DLL for GM using that library, and I will create libraries for other compilers later.

[posva]

i hope you realease a beta version soon, and of course qith a simple example for introducing your DLL

[ash47]

Please put 2D or something similar into the topic title, thanks P.S. That is pretty awesome, i get like 23-28 FPS though, lol...

[theludicrous]

any progress?

[Maarten Baert]

I have finished the structure of the engine, but there's still a lot of code that has to be rewritten.