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#include "darkGDK.h"

using namespace std;

// fDistance between 2 objects
float fDistance3D( float fX1, float fY1, float fZ1, float fX2, float fY2, float fZ2 )
{
	float fDistance;

	dbMakeVector3( 1 );
	dbSetVector3(1, fX1 - fX2, fY1 - fY2, fZ1 - fZ2);
	fDistance = dbLengthVector3( 1 );
	return(fDistance);
}


void DarkGDK(void)
{
	float fPresses = 2.0f;
	float fDistance;

	dbMakeObjectCube(1,50);
	dbPositionObject(1,150.1421214214f,150.1234424246f,150.1234242456f);

	dbPointCamera(dbObjectPositionX(1),dbObjectPositionY(1),dbObjectPositionZ(1));
	fDistance = fDistance3D(dbObjectPositionX(1),dbObjectPositionY(1),dbObjectPositionZ(1),dbCameraPositionX(0),dbCameraPositionY(0),dbCameraPositionZ(0))/fPresses;
	
	while(LoopGDK())
	{
		dbSync();

		if(dbUpKey() == 1)
		{
			
			dbMoveCamera(fDistance);
			dbPrint(dbCameraPositionX(0));
			dbPrint(dbCameraPositionY(0));
			dbPrint(dbCameraPositionZ(0));
			dbSync();
			while(dbScanCode()>0){}
		}
	}
}

	fPresses as float
    fPresses = 2.0
    
    sync on
	Make Object Cube 1,50;
	Position Object 1,150.1421214214,150.1234424244,150.1234242456;

	Point Camera Object Position X(1),Object Position Y(1),Object Position Z(1)
	fDistanceMain as float
    fDistanceMain = fDistance3D(Object Position X(1),Object Position Y(1),Object Position Z(1),Camera Position X(0),Camera Position Y(0),Camera Position Z(0))/fPresses
	
	do
		Sync

		if UpKey() = 1
			Move Camera fDistanceMain
			Print Camera Position X(0)
			Print Camera Position Y(0)
			Print Camera Position Z(0)
			Sync
			while ScanCode()>0
			endwhile
        endif
    loop
    
// fDistance between 2 objects
function fDistance3D( fX1 as float, fY1 as float, fZ1 as float, fX2 as float, fY2 as float, fZ2 as float )
	empty = Make Vector3 (1) 
	Set Vector3 1, fX1 - fX2, fY1 - fY2, fZ1 - fZ2
	fDistanceFunc as float
    fDistanceFunc = Length Vector3( 1 )
endfunction fDistanceFunc

#include "darkGDK.h"

// fDistance between 2 objects
float fDistance3D( float fX1, float fY1, float fZ1, float fX2, float fY2, float fZ2 )
{
	float fDistance;

	dbMakeVector3( 1 );
	dbSetVector3(1, fX1 - fX2, fY1 - fY2, fZ1 - fZ2);
	fDistance = dbLengthVector3( 1 );
	return(fDistance);
}


void DarkGDK(void)
{
	float fDistance;

	// Original object positions
	float fObjectX = 0.0f;
	float fObjectY = 0.0f;
	float fObjectZ = 5.0f;

	// Original camera positions
	float fCameraX = 0.0f;
	float fCameraY = 0.0f;
	float fCameraZ = 0.0f;

	// Setup
	dbAutoCamOff();
	dbSyncOn();

	// Create/position cube object
	dbMakeObjectCube(1,50);
	dbPositionObject(1,fObjectX,fObjectY,fObjectZ);

	// Position camera
	dbPositionCamera(fCameraX,fCameraY,fCameraZ);

	// Point camera at cube
	dbPointCamera(dbObjectPositionX(1),dbObjectPositionY(1),dbObjectPositionZ(1));
	
	// Work out distance between camera and cube
	fDistance = fDistance3D(dbObjectPositionX(1),dbObjectPositionY(1),dbObjectPositionZ(1),dbCameraPositionX(0),dbCameraPositionY(0),dbCameraPositionZ(0));
		
	while(LoopGDK())
	{
		dbSync(); // Refresh screen

		// Camera movements
		if(dbUpKey() == 1)
		{
			dbMoveCamera(fDistance);
			while(dbScanCode()>0){}
		}
		if(dbDownKey() == 1)
		{
			dbMoveCamera(-fDistance);
			while(dbScanCode()>0){}
		}
		
		// Tell us whether or not camera and object positions are exactly the same
		if( (dbObjectPositionX(1) == dbCameraPositionX(1)) && (dbObjectPositionY(1) == dbCameraPositionY(1)) && (dbObjectPositionZ(1) == dbCameraPositionZ(1)) )
		{
			dbPrint("Object and camera positions are the SAME");
		}
		else
		{
			dbPrint("Object and camera positions are DIFFERENT");
		}
		dbPrint("");
		
		// Display general information
		dbSetTextToBold();	dbPrint("Current camera positions"); dbSetTextToNormal();
			dbPrint(dbStr(dbCameraPositionX(0)));
			dbPrint(dbStr(dbCameraPositionY(0)));
			dbPrint(dbStr(dbCameraPositionZ(0)));
		
		dbPrint("");
		
		dbSetTextToBold();	dbPrint("Object position"); dbSetTextToNormal();
			dbPrint(dbStr(dbObjectPositionX(1)));
			dbPrint(dbStr(dbObjectPositionY(1)));
			dbPrint(dbStr(dbObjectPositionZ(1)));
		
		dbPrint("");
		dbPrint("");

		dbSetTextToBold();	dbPrint("Original camera position"); dbSetTextToNormal();
			dbPrint(dbStr(fCameraX));
			dbPrint(dbStr(fCameraY));
			dbPrint(dbStr(fCameraZ));

		dbPrint("");

		dbSetTextToBold(); dbPrint("Original distance between camera and object"); dbSetTextToNormal();
			dbPrint(dbStr(fDistance));
	}
}