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#include "DarkGDK.h"

void rotatecameraaroundobjectY(int id, int distance, float speed)
{
dbPositionCamera(dbObjectPositionX(id), dbCameraPositionY(), dbObjectPositionZ(id));
int camx=dbCameraPositionX();
int camz=dbCameraPositionZ();
float x=dbSin(dbCameraAngleY()+180-speed)* distance;
float z=dbCos(dbCameraAngleY()+180-speed)* distance;
dbPositionCamera ( camx+x, dbCameraPositionY(), camz+z );
dbPointCamera(dbObjectPositionX(id), dbCameraPositionY(id), dbObjectPositionZ(id));
}

void rotatecameraaroundobjectX(int id, int distance, float speed)
{
dbPositionCamera(dbCameraPositionX(), dbObjectPositionY(id), dbObjectPositionZ(id));
int camy=dbCameraPositionY();
int camz=dbCameraPositionZ();
float z=dbSin(dbCameraAngleX()+180-speed)* distance;
float y=dbCos(dbCameraAngleX()+180-speed)* distance;
dbPositionCamera ( dbCameraPositionX(), camy+y, camz+z );
dbPointCamera(dbObjectPositionX(id), dbCameraPositionY(id), dbObjectPositionZ(id));
}
void DarkGDK ( void )
{
	dbSyncOn   ( );
	dbSyncRate ( 60 );

	dbLoadImage("cube.bmp",1);
	dbMakeObjectCube(1,100);
	dbTextureObject (1, 1);

while ( LoopGDK ( ) )
{
if( dbUpKey() )
 {rotatecameraaroundobjectX(1, 300, 1);}
if( dbDownKey() )
 {rotatecameraaroundobjectX(1, 300, -1);}
if( dbRightKey() )
 {rotatecameraaroundobjectY(1, 300, 1);}
if( dbLeftKey() )
 {rotatecameraaroundobjectY(1, 300, -1);}

dbSync ( );
}
return;
}

dbPointCamera(dbObjectPositionX(id), dbCameraPositionY(id), dbObjectPositionZ(id));

#include "DarkGDK.h"

/******************************************************************************
* the main entry point for the application is this function
******************************************************************************/
void DarkGDK(void) {
	// turn on sync rate and set maximum rate to 60 fps
	dbSyncOn();
	dbSyncRate(60);

	// make the object of our camera's focus
	dbMakeObjectCube(1, 1.0);

	// position the camera at the distance we want from the cube
	dbPositionCamera(0, 5, -10);

	// point the camera at our focus point
	dbPointCamera(0, 0, 0);

	// calculate the distance x^2 + y^2 + z^2 = dist^2
	float dist = sqrt(0.0 + 25.0 + 100.0);

	// our camera's rotation angle
	int angle = 0;

	// our main loop
	while (LoopGDK()) {
		// move the camera to the focus point
		dbMoveCamera(dist);

		// rotate the camera by our angle
		dbYRotateCamera(angle);

		// move the camera back from the focus point
		dbMoveCamera(-dist);

		// update our rotation angle
		angle = dbWrapValue(angle + 1);

		// update the screen
		dbSync();
	}

	// return back to windows
	return;
}