C++ with Lua example

[Josh]

Make sure the "Scripts" folder is in the same directory as your program:

//	====================================================================
//	This file was generated by Leadwerks C++/LEO/BlitzMax Project Wizard
//	Written by Rimfrost Software
//	http://www.rimfrost.com 
//	====================================================================

#include "engine.h"

int WINAPI WinMain( HINSTANCE hInstance,
				HINSTANCE hPrevInstance,
				LPSTR lpCmdLine,
				int nShowCmd ) 
{
Initialize() ;
RegisterAbstractPath("C:/Program Files (x86)/Leadwerks Engine SDK");
SetAppTitle( "MyGame" ) ;
Graphics( 800, 600 ) ;
AFilter() ;
TFilter() ;

TWorld	world;
TBuffer gbuffer;
TCamera camera;
TMesh	mesh;
TLight	light;
TMesh	ground;
TMaterial material;

world = CreateWorld() ;
if (!world) {
	MessageBoxA(0,"Error","Failed to create world.",0);
	return Terminate();
}

gbuffer=CreateBuffer(GraphicsWidth(),GraphicsHeight(),BUFFER_COLOR|BUFFER_DEPTH|BUFFER_NORMAL);

camera=CreateCamera();
PositionEntity(camera,Vec3(0,0,-20));

//================================================================
// Here is the code I added
//================================================================
SetGlobalObject("world_main",world);
LoadModel("abstract::windmill.gmf");
//================================================================
//
//================================================================

material=LoadMaterial("abstract::cobblestones.mat");

mesh=CreateCube();
PaintEntity(mesh,material);

ground=CreateCube();
ScaleEntity(ground,Vec3(10,1,10));
PositionEntity(ground,Vec3(0,-2,0));
PaintEntity(ground,material);

light=CreateDirectionalLight();
RotateEntity(light,Vec3(45,45,45));

// Game loop
while( !KeyHit() && !AppTerminate() )
{
	if( !AppSuspended() ) // We are not in focus!
	{
		// Rotate cube
		TurnEntity( mesh, Vec3( 0.5f*AppSpeed() ) ) ;

		// Update timing and world
		UpdateAppTime();
		UpdateWorld(AppSpeed()) ;

		// Render
		SetBuffer(gbuffer);
		RenderWorld();
		SetBuffer(BackBuffer());
		RenderLights(gbuffer);

		// Send to screen
		Flip(0) ;
	}
}

// Done
return Terminate() ;
}

[ZeroByte]

Thank's Josh, it worked great.

 

I converted it to use the Framewerk, but i can't get the blades to turn.

 

Here is the code i'm using, with SetGlobalObject();

 

#include "framewerk.h"
using namespace leadwerks;

int main()
{
       if(!Initialize())return 1;
       RegisterAbstractPath("C:/LE2.3");
       SetAppTitle( "C++ Lua Demo" ) ;
       Graphics( 800, 600 ) ;
       AFilter() ;
       TFilter() ;      

       TLight    light;
       TMesh	  ground;
       TMaterial material;

       Framewerk fw;

	if( !fw.Create() )
		{
			MessageBoxA(0,"Failed to initialize engine.",NULL,0);
			return 1;
		}



       //================================================================
       // Here is the code I added
       //================================================================
       SetGlobalObject("world_main",fw.GetMain().GetWorld());
       LoadModel("abstract::windmill.gmf");
       //================================================================
       //
       //================================================================

	fw.GetRenderer().SetSkybox( LoadMaterial("abstract::FullskiesBlueClear0016_2_L.mat") );
	fw.GetRenderer().SetSSAO(0);
	fw.SetStats(2); 

       PositionEntity(fw.GetMain().GetCamera(),Vec3(0,8,-22));

	material = LoadMaterial("abstract::cobblestones.mat");

	ground = CreateCube();
	ScaleEntity   ( ground, Vec3(12,  1, 12));
	PositionEntity( ground, Vec3(0, -1, 0));
	PaintEntity   ( ground, material );

       light=CreateDirectionalLight();
       RotateEntity( light, Vec3(45) );

       // Game loop
       do
	{
		if( KeyHit(KEY_ESCAPE) ) break;
		if( AppTerminate()     ) break;

		// Update timing and world
           //UpdateAppTime();
           //UpdateWorld(AppSpeed()) ;

           // Render

           fw.Update();
		fw.Render();

           // Send to screen
           Flip(0) ;
       }
	while( true );

       // Done
       return Terminate() ;
}

 

 

 

Is it possible to use Lua with Framewerk ?

[Josh]

That should work perfectly.

[DaDonik]

It's working with Framewerk

 

All i had to add to my project was:

SetGlobalObject ("world_main", g_FW.GetMain ().GetWorld ());

SetGlobalObject ("world_transparency", g_FW.GetTransparency ().GetWorld ());

SetGlobalObject ("world_background", g_FW.GetBackground ().GetWorld ());

SetGlobalObject ("camera_main", g_FW.GetMain ().GetCamera ());

SetGlobalObject ("camera_transparency", g_FW.GetTransparency ().GetCamera ());

SetGlobalObject ("camera_background", g_FW.GetBackground ().GetCamera ());

g_FW is an instance of the Framewerk...obviously

 

 

Josh, you told us that LUA runs along with C++ with NO code changes...thats just not true!

I need the 6 lines above!!

 

 

[Josh]

...due to the way that particular script is written. It could be written so it doesn't need those values at all.

[DaDonik]

No problem for me. As long as it works when writing 6 lines in c++, it's still like magic

[Canardia]

Those lines need to be added to gamelib, so you don't have to write any additional lines in your game code.

[ZeroByte]

Thank's DaDonik, it's working.

[Soamp]

Hi,

I used ProjectWizard to create an empty project. Josh's code worked fine but when I create an instance of Framewerk I get these errors :

 

Error 1 error LNK2019: unresolved external symbol "public: virtual __thiscall leadwerks::Framewerk::~Framewerk(void)" (??1Framewerk@leadwerks@@UAE@XZ) referenced in function _WinMain@16 test_windows002.obj test_windows002

 

Error 2 error LNK2019: unresolved external symbol "public: __thiscall leadwerks::Framewerk::Framewerk(void)" (??0Framewerk@leadwerks@@QAE@XZ) referenced in function _WinMain@16 test_windows002.obj test_windows002

 

Error 3 fatal error LNK1120: 2 unresolved externals .\test_windows002-Debug.exe test_windows002

 

Here is my code:

//	====================================================================
//	This file was generated by Leadwerks C++/LEO/BlitzMax Project Wizard
//	Written by Rimfrost Software
//	http://www.rimfrost.com 
//	====================================================================

#include "engine.h"
#include "framewerk.h"
using namespace leadwerks;

int WINAPI WinMain( HINSTANCE hInstance,
				HINSTANCE hPrevInstance,
				LPSTR lpCmdLine,
				int nShowCmd ) 
{
Initialize() ;
RegisterAbstractPath("C:/Program Files/Leadwerks Engine SDK");
SetAppTitle( "test_windows002" ) ;
Graphics( 800, 600 ) ;
AFilter() ;
TFilter() ;

TWorld	world;
TBuffer gbuffer;
TCamera camera;
TMesh	mesh;
TLight	light;
TMesh	ground;
TMaterial material;

world = CreateWorld() ;
if (!world) {
	MessageBoxA(0,"Error","Failed to create world.",0);
	return Terminate();
}

Framewerk fw;


gbuffer=CreateBuffer(GraphicsWidth(),GraphicsHeight(),BUFFER_COLOR|BUFFER_DEPTH|BUFFER_NORMAL);

camera=CreateCamera();
PositionEntity(camera,Vec3(0,0,-2));

material=LoadMaterial("abstract::cobblestones.mat");

mesh=CreateCube();
PaintEntity(mesh,material);

ground=CreateCube();
ScaleEntity(ground,Vec3(10,1,10));
PositionEntity(ground,Vec3(0,-2,0));
PaintEntity(ground,material);

light=CreateDirectionalLight();
RotateEntity(light,Vec3(45,45,45));

// Game loop
while( !KeyHit() && !AppTerminate() )
{
	if( !AppSuspended() ) // We are not in focus!
	{
		// Rotate cube
		TurnEntity( mesh, Vec3( 0.5f*AppSpeed() ) ) ;

		// Update timing and world
		UpdateAppTime();
		UpdateWorld(AppSpeed()) ;

		// Render
		SetBuffer(gbuffer);
		RenderWorld();
		SetBuffer(BackBuffer());
		RenderLights(gbuffer);

		// Send to screen
		Flip(0) ;
	}
}

// Done
return Terminate() ;
}

 

Can anybody help me please.

thanks.

[Canardia]

Don't use Framewerk, but use Framework.