/* Filename: AnimatedSprite.cpp
 *
 * Author: Br. Isidore Minerd
 *
 * Date: July 31, 2009 
 *
 * Description:  This very simple 3D application moves a cube back 
 *               and forth along its default forward path, switching
 *               direction every 90 frames (~3 seconds).
 * Adapted from example found at:
 *    http://darkgdk.wikia.com/wiki/Basic_Program
 */
#include "DarkGDK.h"

void DarkGDK ( void )
{
	long frameNum = 0; // Used to keep track of how long we have been running
	double stepValue = 0.5; // The amount to move each time
	int frameMultiplier = 1; // 1 => move forward; -1 => move backward
	
	// Set our maximum frame rate
	dbSyncOn   ( );
	dbSyncRate ( 30 );
   dbSetWindowTitle("A Moving Cube");
   
   // Create a cube at the origin and position the camera on the x,y,z axes
   // We position ourselves offset from x=0,y=0 in order to have some perspective
   // on the cube
	dbMakeObjectCube ( 1, 1);
	dbPositionCamera ( 5, 5, -10 );
   
   // The main Dark GDK 
	while ( LoopGDK ( ) )
	{		
		// Move forward / backward depending on the frame multiplier
		dbMoveObject( 1, frameMultiplier * stepValue );

		dbSync ( );
		frameNum++;
		// If frame / 90 yields no remainder, change direction.
		if(frameNum % 90 == 0)
		{
		   frameMultiplier *= -1;
		}
	}
	return;
}