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The problem there also when i click in a different position, i would fix this because in my game there are many scene with a long backgorund and the player is forced to click at the screen side repeatedly. 

So there aren't any other solution? I have to implement another computational method for the A* algorithm and overload the Walk method?

because i think many player can do

Hi, when i play and i click in a point like a crazy the main character hangs.
I think the problem is in the function Walk indeed when i run the command cEgo.Walk in the repeatedly execute function  my character freezes.

Can anyone help me?

This is my final version for background sliding in monkey island style ....

Code: ags

//Backgorund sliding: 
//-----------------------------------------------------------------------------
//Pseudo const
//
//S_VELOCITY is the camera speed. 0 no movement
//
int S_VELOCITY = 3;
int S_DISTANCE = 160;
//-----------------------------------------------------------------------------
//Global var
int xCameraCenter;
int halfScreenSize;
//State var
int movementVersor = 1; // 1 for right movement -1 for left movement
bool enableMovementRight = false;
bool enableMovementLeft = false;
//-----------------------------------------------------------------------------
//Set the new center:
//Put the character in the center of the screen 
function on_event (EventType event, int data)
{
  if (event == eEventEnterRoomBeforeFadein){
    halfScreenSize = System.ScreenWidth/2;
    xCameraCenter = GetViewportX() + 160 -player.x;
    if(xCameraCenter < 0) xCameraCenter = 0;
  }
}
//-----------------------------------------------------------------------------
//Camera motion
function repeatedly_execute_always()
{
  SetViewport(xCameraCenter, 0 );
  //Check the event and set the direction 
  if (  player.x > S_DISTANCE + halfScreenSize + GetViewportX() ){
    enableMovementRight = true;
    movementVersor = 1;
  }
  if (player.x < (GetViewportX() + S_DISTANCE) ){
    enableMovementLeft = true;
    movementVersor = -1;
  }
  //If the camera is on the left border or right border disable the movement
  if( Room.Width <= GetViewportX() + halfScreenSize*2 ) enableMovementRight = false;
  if(GetViewportX() == 0) enableMovementLeft = false;
  //Check if the camera and the player are in the same position
  if(xCameraCenter >= player.x - halfScreenSize) enableMovementRight = false;
  if( xCameraCenter <= player.x - halfScreenSize) enableMovementLeft = false;
  //if the movement is enabled
  if( enableMovementRight == true || enableMovementLeft == true ) xCameraCenter += movementVersor*S_VELOCITY;
}