nitro-engine/examples/loading/clone_models/source/main.c

#include <NEMain.h>
#include "model_bin.h"

NE_Camera * Camera; //Pointers to objects...
NE_Model * Model[16];

/*
Cloning models will avoid loading into memory the same data many times. This is really usefull
when you want to draw lots of animated models, they will use the memory of one!

NOTE: Models use a few bytes for holding some information.

NOTE 2: Be careful when using NE_ModelClone(). If you delete source model and try to draw a 
destiny model game will eventually crash!

NOTE 3: If you clone an animated model you will be able to set different animation patterns 
for each model.
*/

void Draw3DScene(void)
{
	NE_CameraUse(Camera); //Use camera and draw all objects.
	u8 a; for(a = 0; a < 16; a++) NE_ModelDraw(Model[a]);

	//Get some information AFTER drawing but BEFORE returning from the function.
	printf("\x1b[0;0HPolygon RAM: %d   \nVertex RAM: %d   ",NE_GetPolygonCount(), NE_GetVertexCount());
}

int main()
{
	irqEnable(IRQ_HBLANK);
	irqSet(IRQ_VBLANK, NE_VBLFunc); //Used to control some things.
	irqSet(IRQ_HBLANK, NE_HBLFunc);
	
	NE_Init3D(); //Init text and Nitro Engine.
	NE_TextureSystemReset(0,0,NE_VRAM_AB); // libnds uses VRAM_C for the text console
	consoleDemoInit(); 

	u8 a; for(a = 0; a < 16; a++) Model[a] = NE_ModelCreate(NE_Static);
	Camera = NE_CameraCreate(); //Create space for everything.
	
	NE_CameraSet(Camera, -3.5,1.5,1.25,  0,1.5,1.25,  0,1,0); //Set camera.
	
	NE_ModelLoadStaticMesh(Model[0],(u32*)model_bin); //Load model.
	
	for(a = 1; a < 16; a++) NE_ModelClone(Model[a], //Destiny
	                                       Model[0]); //Source model.
	
	//Set up light
	NE_LightSet(0,NE_Yellow,0,-0.5,-0.5);
	
	NE_ShadingEnable(true); //Enable shading
	
	for(a = 0; a < 16; a++) //Set start coordinates/rotation for models using random formules...
	{
		NE_ModelSetRot(Model[a], a, a*30, a* 20);
		NE_ModelSetCoord(Model[a], 0, a % 4, a / 4);
	}
	
	while(1) 
	{
		//Rotate every model using random formules :P
		for(a = 0; a < 16; a++) NE_ModelRotate(Model[a], -a, a%5, 5-a);
		
		NE_Process(Draw3DScene); //Draw scene
		NE_WaitForVBL(0);
	}
	
	return 0;
}