// Dark GDK - The Game Creators - www.thegamecreators.com

// include Dark GDK header file
#include "DarkGDK.h"

float g_fSpeed = 0.1f;
float g_fTurn = 0.03f;
float OldCamAngleY;
float OldCamAngleX;
float CameraAngleY;
float CameraAngleX;

void userInput ( void );

void DarkGDK ( void )
{
	// entry point for the application

	dbSetDir ( "media\\" );

	dbAutoCamOff     ( );
	dbSyncOn         ( );
	dbSyncRate       ( 60 );
	dbBackdropOff    ( );
	dbSetCameraRange ( 0.05f, 30000 );

	dbLoadBSP ( "ikzdm1.pk3", "ikzdm1.bsp" );
	dbSetBSPCameraCollision (  1, 0, 0.75, 0 );
	
	dbLoadObject ( "media\\sky\\skybox2.x", 200 );
	dbSetObjectLight ( 200, 0 );
	dbSetObjectTexture ( 200, 3, 1 );
	dbPositionObject ( 200, 1000, 2000, 4000 );
	dbScaleObject ( 200, 30000, 30000, 30000 );
	
	dbPositionCamera ( 0.0f, 0.5f, 0.0f );
	
	while ( LoopGDK ( ) )
	{
		if ( dbEscapeKey ( ) )
			return;

		char szFPS [ 256 ] = "";
		strcpy ( szFPS, "fps = " );
		strcat ( szFPS, dbStr ( dbScreenFPS ( ) ) );
		dbText ( dbScreenWidth ( ) - 20 - dbTextWidth ( szFPS ), dbScreenHeight ( ) - 40, szFPS );

		userInput ( );

		dbSync ( );
	}
}

void userInput ( void )
{
	dbControlCameraUsingArrowKeys ( 0, g_fSpeed, g_fTurn );

	OldCamAngleY = CameraAngleY;
	OldCamAngleX = CameraAngleX;

	CameraAngleY = dbWrapValue ( CameraAngleY + dbMouseMoveX ( ) * 0.4f );
	CameraAngleX = dbWrapValue ( CameraAngleX + dbMouseMoveY ( ) * 0.4f );

	dbYRotateCamera ( dbCurveAngle ( CameraAngleY, OldCamAngleY, 24 ) );
	dbXRotateCamera ( dbCurveAngle ( CameraAngleX, OldCamAngleX, 24 ) );

	char* szKey = dbInKey ( );

	if ( strcmp ( szKey, "+" ) == 0 )
	{
		if ( g_fSpeed < 1000 )
			g_fSpeed = g_fSpeed + 0.01f;
	}

	if ( strcmp ( szKey, "-" ) == 0 )
	{
		if ( g_fSpeed > 0.02f )
			g_fSpeed = g_fSpeed - 0.01f;
	}
}