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if(dbRightKey())
{
  dbTurnCameraRight(90);
  dbMoveCamera(2);
  dbTurnCameraRight(-90); //or left(90)
}

#include "DarkGDK.h"

void CheckInput();

void DarkGDK()
{
  dbMakeObjectCube(1,50);

  while(LoopGDK())
  {
    CheckInput();
    dbSync();
  }
  return;
}

void CheckInput()
{
/******************************************************************
*  PreCondition: The game scenario has been loaded correctly
* PostCondition: The appropriate camera action will be applied
*   Description: This functions handles the input for the game
*     Algorithm: If "Left Arrow" is pressed, Strafe Left
*                If "Right Arrow" is pressed, Strafe Right
*                If "Up Arrow" is pressed, move forward
*                If "Down Arrow" is pressed, move backwards
*                Establish where the mouse moved to
*                Rotate the camera based on the mouse movement
******************************************************************/
  //If the Left Arrow is pressed
  if(dbLeftKey())
  {			
    //Strafe left
    dbTurnCameraLeft(90);
    dbMoveCamera(2);
    dbTurnCameraRight(90);
  }
  else		
    //If the Right Arrow is pressed
    if(dbRightKey())
    {
      //Strafe Right
      dbTurnCameraRight(90);
      dbMoveCamera(2);
      dbTurnCameraLeft(90);
    }	

    //If Up Arrow is pressed
    if(dbUpKey())
      dbMoveCamera(2);
    else
      //If Down Arrow is pressed
      if(dbDownKey())
        dbMoveCamera(-2);
	

 // create a rotation axis based on mouse movement
 fCameraAngleX = dbWrapValue(fCameraAngleX + dbMouseMoveY() * 0.4);
 fCameraAngleY = dbWrapValue(fCameraAngleY + dbMouseMoveX() * 0.4);

  // rotate camera
  dbXRotateCamera(fCameraAngleX);
  dbYRotateCamera(fCameraAngleY);
  return;
}

#include "DarkGDK.h"

void CheckInput(float &p_fX, float &p_fY);

void DarkGDK()
{
  dbMakeObjectCube(1,50);
  
  float fX=0; // My Up Down
  float fY=0; // My Left Right

  while(LoopGDK())
  {
    CheckInput(fX,fY);
    dbSync();
  }
  return;
}

#define cnMouseXScale -0.5f
#define cnMouseYScale -0.5f

void CheckInput(float &p_fX, float &p_fY)
{
/******************************************************************
*  PreCondition: The game scenario has been loaded correctly
* PostCondition: The appropriate camera action will be applied
*   Description: This functions handles the input for the game
*     Algorithm: If "Left Arrow" is pressed, Strafe Left
*                If "Right Arrow" is pressed, Strafe Right
*                If "Up Arrow" is pressed, move forward
*                If "Down Arrow" is pressed, move backwards
*                Establish where the mouse moved to
*                Rotate the camera based on the mouse movement
******************************************************************/
  
  p_fY= dbWrapValue(p_fY+(dbMouseMoveX() * cnMouseXScale));
  p_fX= dbWrapValue(p_fX+(dbMouseMoveY() * cnMouseYScale));
  
  
  //If the Left Arrow is pressed
  if(dbLeftKey())
  {			
    //Strafe left
    dbTurnCameraLeft(90);
    dbMoveCamera(2);
    dbTurnCameraRight(90);
  }
  else		
    //If the Right Arrow is pressed
    if(dbRightKey())
    {
      //Strafe Right
      dbTurnCameraRight(90);
      dbMoveCamera(2);
      dbTurnCameraLeft(90);
    }	

    //If Up Arrow is pressed
    if(dbUpKey())
      dbMoveCamera(2);
    else
      //If Down Arrow is pressed
      if(dbDownKey())
        dbMoveCamera(-2);
	

 // create a rotation axis based on mouse movement  fCameraAngleX = dbWrapValue(fCameraAngleX + dbMouseMoveY() * 0.4);  fCameraAngleY = dbWrapValue(fCameraAngleY + dbMouseMoveX() * 0.4);

  // BAD BAD----------------- This is why you were probably flipping.
  // rotate camera
  //dbXRotateCamera(fCameraAngleX);
  //dbYRotateCamera(fCameraAngleY);
  // BAD BAD-----------------
  
  // GOOD GOOD------ the fix?
  // EACH Cycle, Pitch and turn the cam to the Mouse Captured angles versus
  // trying to manipulate each axis individually. This is why you're flipping. 
  // Euler has some "properties" that seem counter intuitive at first. 
  // Once you understand them - they just just suck at times :)
  
  dbRotateCamera(0,0,0);
  dbTurnCameraLeft(p_fY);
  dbPitchCameraUp(p_fX);
   

  return;
}

float x, z;

// For strafing left
x = dbObjectPositionX(1) + dbSin(dbObjectAngleY(1)-90);
z = dbObjectPositionZ(1) + dbCos(dbObjectAngleY(1)-90);
dbPositionObject(1, x, 0, z);

// For strafing right
x = dbObjectPositionX(1) + dbSin(dbObjectAngleY(1)+90);
z = dbObjectPositionZ(1) + dbCos(dbObjectAngleY(1)+90);
dbPositionObject(1, x, 0, z);