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

// the wizard has created a very simple project that uses Dark GDK
// it contains the basic code for a GDK application

// whenever using Dark GDK you must ensure you include the header file
#include "DarkGDK.h"
#include "math.h"
#define W 17
#define A 30
#define D 32
#define S 31
void MovementCorrection();
bool ObjWasLooped;
bool WASD;
bool FPSView;
float MovementForward;
float MovementSide;
float PlayerAngleX;
float PlayerAngleY;
float GravityAngleXZ;
float x_pos;
float z_pos;
float x_delta;
float z_delta;
float objHeight;
float CorrectionAngle;
float HeightDifference;
float correction;
bool KeyStateWASD()
	{
		WASD = false;
		if (dbKeyState(W))
			WASD=true;
		if (dbKeyState(A))
			WASD=true;
		if (dbKeyState(S))
			WASD=true;
		if (dbKeyState(D))
			WASD=true;
        return WASD;
	}
void IsGroundSteep()
	{
	 float x_temp[8];
	 float z_temp[8];
	 float y_temp[8];
	 float angle_temp[8];
	 float Hyp=10; //länge des Fühlers
	 float min =10000;
	 float max = 0;
     int i, min_pos, max_pos;
	 angle_temp[0]= dbObjectAngleY(3) ;
	 for (i=1;i<8;i++)
          angle_temp[i]= angle_temp[i-1] + 45;
	 for (i=0;i<8;i++)
	 {
	   
       x_delta = sin(angle_temp[i])*Hyp;
	   z_delta = cos(angle_temp[i])*Hyp;
	   x_temp[i]= x_pos + x_delta;
	   z_temp[i]=z_pos + z_delta;
	   y_temp[i]= dbGetTerrainGroundHeight(1,x_temp[i], z_temp[i]);
	 }
	 for (i=0;i<8;i++)
	  {
		 if (y_temp[i]<= min)
		 { 
		   min= y_temp[i];
		   min_pos=i;
		 }
		 if (y_temp[i]>= max)
		 {
			 max = y_temp[i];
             max_pos=i;
		 }	
	  }
     if (y_temp[min_pos] != y_temp[max_pos])
	    {
		 HeightDifference= y_temp[max_pos] - y_temp[min_pos];
		 CorrectionAngle =  angle_temp[min_pos]-dbObjectAngleY(3) ;
		 //CorrectionAngle = PlayerAngleX + CorrectionAngle;
	     
	    }
	 dbText(150,0,"Hoehendifferenz:" );
	 dbText(280,0,dbStr(HeightDifference));
	 dbText(150,20,"Korrekturwinkel" );
	 dbText(290,20,dbStr(CorrectionAngle));
	 dbText(150,10,"Playerwinkel" );
	 dbText(290,10,dbStr(PlayerAngleX));
	 }

  void GravityPlayer()
      {
	   float Forward_delta=0;
       float Side_delta=0;
	   if (HeightDifference > 25)
	      {
		   correction = HeightDifference * 0.33;
		   Forward_delta = dbCOS(CorrectionAngle)*correction;
	       Side_delta = dbSIN(CorrectionAngle)*correction;
           MovementForward = MovementForward - Forward_delta;
		   MovementSide = MovementSide + Side_delta;
		   
		   
	      }
	   else
	     { x_pos = dbObjectPositionX ( 3 );
		   z_pos = dbObjectPositionZ ( 3 );
	     }
      }
 
	
// the main entry point for the application is this function
void DarkGDK ( void )
{   //Variablen für Objekt-Position
    dbSetDisplayMode ( 1024, 768, 32 ); 
	x_pos = 1600.0f;
	z_pos = 1100.0f;
    ObjWasLooped = false;
	FPSView=false;
	// switch on sync rate and set to a maximum of 60 fps
	dbSyncOn ( );
	dbSyncRate ( 60 );
	dbSetCameraRange ( 1.0f, 30000.0f );
   	SetCurrentDirectory ( "Map" );
	dbLoadImage ( "aktuelltext.bmp", 1 );
	dbLoadImage ( "detail.jpg",  2 );
	dbSetupTerrain ( );
	dbMakeObjectTerrain ( 1 );
    dbSetTerrainHeightMap (1,"aktuell.bmp");
	dbSetTerrainScale ( 1, 19.0f, 2.0f, 19.0f );
	dbSetTerrainLight ( 1, 1.0f, -0.25f, 0.0f, 1.0f, 1.0f, 0.78f, 0.9f );
	dbSetTerrainTexture ( 1, 1, 2 );
    dbBuildTerrain ( 1 );
	dbLoadObject ( "skybox2.x", 2 );
	dbLoadObject ("Colonel-x.X",3);
	dbSetObjectLight ( 2, 0 );
    dbScaleObject ( 2, 30000, 30000, 30000 );
	dbPositionCamera ( 385, 23, 100 );
	dbSetObjectTexture ( 2, 3, 1 );
	objHeight= dbGetTerrainGroundHeight ( 1, x_pos,z_pos);
	dbPositionObject (3, x_pos, objHeight, z_pos);
	
	while ( LoopGDK ( ) )
	{  
		MovementForward=0;
		MovementSide=0;
	
		
			
        objHeight= dbGetTerrainGroundHeight ( 1, dbObjectPositionX(3),dbObjectPositionZ(3));
	    dbPositionObject (3, x_pos, objHeight, z_pos);
        
		// find the ground height of the terrain
		float fHeight = dbGetTerrainGroundHeight ( 1, dbCameraPositionX ( ), dbCameraPositionZ ( ) );
        PlayerAngleX = dbWrapValue ( PlayerAngleX + dbMouseMoveX ( ) * 0.4 );
		PlayerAngleY = dbWrapValue ( PlayerAngleY + dbMouseMoveY ( ) * 0.4);
		dbYRotateObject (3,PlayerAngleX);
		
		if (PlayerAngleY < 80)
			 dbXRotateCamera (PlayerAngleY);
		if (PlayerAngleY>260)
			dbXRotateCamera (PlayerAngleY);
        dbText(0,0,dbStr(PlayerAngleY));
		dbText (0,20,dbStr(dbScanCode()));
    	if (dbKeyState(W))
		{	
			MovementForward = -10;
			//ObjWasLooped = true;
			
			
		} 
		
	           			
		/*if (dbKeyState(57))
		{    
			    float TempHeightNew;
		        TempHeightNew =dbGetTerrainGroundHeight ( 1, dbObjectPositionX(3),dbObjectPositionZ(3));
				if (TempHeightNew > objHeight*0.99)
		        dbMoveObjectUp(3,50);
		}*/
		if (dbKeyState(A))
		{
			MovementSide=10;
			//ObjWasLooped = true;
			
		}  		
		
        if (dbKeyState(D))
		{
			MovementSide = -10;
			//ObjWasLooped = true;
		}
        
		if (dbKeyState(S))
		{
			MovementForward = 10;
			//ObjWasLooped = true;
		}
		
        IsGroundSteep();
        GravityPlayer();
		if (MovementForward != 0)
			{
				dbSetObjectSpeed ( 3,55 );
			    dbLoopObject ( 3, 300 , 318);
			    dbMoveObject (3,MovementForward);
			    x_pos = dbObjectPositionX ( 3 );
			    z_pos = dbObjectPositionZ ( 3 );
				ObjWasLooped = true;
			}
		if (MovementSide != 0)
			{
			dbSetObjectSpeed ( 3,80 );
			dbLoopObject ( 3, 260 , 279);
			dbMoveObjectRight (3,MovementSide);
            x_pos = dbObjectPositionX ( 3 );
			z_pos = dbObjectPositionZ ( 3 );
			ObjWasLooped = true;
			}
		if (KeyStateWASD()==false)
		    if (ObjWasLooped == true)
			{
				dbLoopObject(3,210, 234);
			    dbStopObject(3);
				ObjWasLooped = false;
			}
       // x_pos = dbObjectPositionX ( 3 );
		//z_pos = dbObjectPositionZ ( 3 );
        objHeight = dbGetTerrainGroundHeight (1,x_pos,z_pos);
   
		
         float angle=dbObjectAngleY(3);
	     
         dbSetCameraToFollow( x_pos,objHeight+50,z_pos,angle+180,50,30,10,0);
	   

		// update the terrain
		dbUpdateTerrain ( );
		// update the screen
		dbSync ( );
	}

	
}