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void DarkSDK()
{
	int x,z,obj;
float pitchX,pitchY;
float bX,bY,bZ,i;

	dbSyncOn();
	dbSyncRate(50);
	obj=1;
	pitchX=0.0;
	pitchY=0.0;
	for (x=0; x<25; x++)
	{
		for (z=0; z<25; z++)
		{
			dbMakeObjectBox(obj,100.0,2.0,100.0);
			//dbLoadObject("c:\\moo.x",obj);
			dbPositionObject(obj,x*100.0,0.0+(obj/10.0),z*100.0);
			//dbRotateObject(obj,90.0,0.0,0.0);
			if (obj>1)
			{
				dbGlueObjectToLimb(obj,1,0);
				dbColorObject(obj,dbRgb(0,255,0));
				dbSetObjectCollisionToBoxes(obj);
			}
			else
			{
				dbColorObject(obj,dbRgb(255,0,0));
				dbShowObjectBounds(1,1);
			}
			obj++;
		}
	}

	//dbRotateObject(1,90.0,0.0,0.0);
	dbMakeObjectCube(obj,10.0);
	dbColorObject(obj,dbRgb(255,0,255));
	dbSetObjectCollisionToBoxes(obj);
	bX=0.0;
	bY=9.0;
	bZ=-150.0;
	dbShowObjectBounds(obj,0);
	dbShowObjectBounds(1,0);


	//dbMakeMatrix(1,320,240,16,16);
	//dbPositionMatrix(1,0.0,10.0,0.0);
	//dbRandomizeMatrix(1,20.0);
	//dbUpdateMatrix(1);

	while(LoopSDK()){

		if (dbLeftKey())
		{
			if (pitchX>-10.0)
			{
				pitchX-=ANGLE;
				//dbRollCameraLeft(ANGLE);
				dbRollObjectLeft(1,ANGLE);
			}
		}
		else
		if (dbRightKey())
		{
			if (pitchX<10.0)
			{
				pitchX+=ANGLE;
				//dbRollCameraRight(ANGLE);
				dbRollObjectRight(1,ANGLE);
			}
		}

		if (dbUpKey())
		{
			if (pitchY>-10.0)
			{
				pitchY-=ANGLE;
				//dbPitchCameraDown(ANGLE);
				dbPitchObjectDown(1,ANGLE);
			}
		}
		else
		if (dbDownKey())
		{
			if (pitchY<10.0)
			{
				pitchY+=ANGLE;
				//dbPitchCameraUp(ANGLE);
				dbPitchObjectUp(1,ANGLE);
			}
		}

		bX-=(pitchX*0.25);
		bZ+=(pitchY*0.25);

		//
			//
		//i=dbGetGroundHeight(1,bX,bZ);
		dbPointCamera(bX,bY,bZ);
		{
		char t[256];
		float sizeZ,sizeX,sizeY,diff;
		int s;
		float dist[4];

			s=dbObjectCollision(obj,0);
			if (s)
			{
				sizeZ=dbObjectSizeZ(obj);
				sizeX=dbObjectSizeX(obj);
				sizeY=dbObjectSizeY(obj);
				dist[0]=dbIntersectObject(s,bX,bY+sizeY,bZ+sizeZ,bX,-9999.0,bZ+sizeZ);
				dist[1]=dbIntersectObject(s,bX,bY+sizeY,bZ-sizeZ,bX,-9999.0,bZ-sizeZ);
				diff=dist[0]-dist[1];
				if (diff<0)	bY+=fabs(diff); else bY-=fabs(diff);
				//bY+=(float) diff;
				sprintf(t,"[%4.4f]/[%4.4f]/[%4.4f]",dist[0],dist[1],diff);
				dbText(0,0,t);
			}

		}

		dbPositionObject(obj,bX,bY,bZ);
		dbPositionCamera(bX,(bY+30.0)+pitchY,bZ-75.0);

		dbSync();
		if(dbEscapeKey())return;
	}
}

function get_ground_height(number as integer, x#, z#)

  tileSizeX# = matrix(number).width / matrix(number).xsegs
  tileSizeZ# = matrix(number).depth / matrix(number).zsegs

  row = z# / tileSizeZ#
  column = x# / tileSizeX#

  if row < 0 OR row >= matrix(number).xsegs OR column < 0 or column >= matrix(number).zsegs
      exitfunction 0.0
  endif

  tile=row*matrix(number).xsegs+column
  znorm#=z#-row*tileSizeZ#
  xnorm#=x#-column*tileSizeX#

  rem get the right triangle
  if tileSizeZ#*xnorm#>=tileSizeX#*znorm#
    location=12+tile*216+112
    y1#=memblock float(matrix(number).mem_numb,location)
    y2#=memblock float(matrix(number).mem_numb,location+36)
    y3#=memblock float(matrix(number).mem_numb,location+72)
    y#=y1#+(znorm#/tileSizeZ#)*(y2#-y3#)+(xnorm#/tileSizeX#)*(y3#-y1#)
  else
    location=12+tile*216+4
    y1#=memblock float(matrix(number).mem_numb,location)
    y2#=memblock float(matrix(number).mem_numb,location+36)
    y3#=memblock float(matrix(number).mem_numb,location+72)
    y#=y1#+(znorm#/tileSizeZ#)*(y2#-y1#)+(xnorm#/tileSizeX#)*(y3#-y2#)
  endif

endfunction y#