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nodes.c

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/*************************************************************************
 *
 *  AUTHOR: Wilson T
 *
 *   TITLE: nodes.c
 *
 *  DATE: April 28, 1993
 *
 *  PURPOSE:  Nodes definitions.
 *
 *************************************************************************/

#include <graphics.h>
#include <stdio.h>
#include <math.h>

#include"nodes.h"
#include"map.h"

void Nodes::set_constants(int Id, int colorfill, BOOLEAN state)
{
  /*****************************************************************

    Flag states of Nodes...

      Activated - User input detected...
      BStatus - Whether the option is selected or not...
      Able    - Allow/disallow interaction with user...

   *****************************************************************/

  Activated   = False;
  BStatus   = Off;  // For now, may be a user-defined field later.
  Able      = state;

  NCOLORFILL=colorfill;
  IdNum = Id;
  Drawn = No;
  X=0; Y=0;
}

void Nodes::Init(Display *d, int x, int y)
{
  NBOXSIZE=CCIRCLE+2*STOPRAD;

  X = x-NBOXSIZE/2; X2=X+NBOXSIZE;
  Y = y-NBOXSIZE/2; Y2=Y+NBOXSIZE;

  Disp = d;
  BkColor=Disp->GetBkColor();
}

void Nodes::Draw()
{
  Disp->FastDraw();

  Disp->SetColor(BLACK);

  if(theMap.taxi(IdNum))  // Taxi Stop
    Disp->SetFillStyle(SOLID_FILL, YELLOW);
  else
    Disp->SetFillStyle(SOLID_FILL, GREEN);
  Disp->FillEllipse(X+NBOXSIZE/2, Y+NBOXSIZE/2-CCIRCLE/2+STOPRAD, STOPRAD, STOPRAD);

  if(theMap.bus(IdNum)) // Bus Stop
    Disp->SetFillStyle(SOLID_FILL, GREEN);
  else
    Disp->SetFillStyle(SOLID_FILL, YELLOW);
  Disp->FillEllipse(X+NBOXSIZE/2+CCIRCLE/2, Y+NBOXSIZE/2+2*STOPRAD-2, STOPRAD, STOPRAD);

  if(theMap.subway(IdNum))  // Subway Stop
    Disp->SetFillStyle(SOLID_FILL, RED);
  else if (theMap.taxi (IdNum))
    Disp->SetFillStyle(SOLID_FILL, YELLOW);
  else
    Disp->SetFillStyle(SOLID_FILL, GREEN);
  Disp->FillEllipse(X+NBOXSIZE/2-CCIRCLE/2, Y+NBOXSIZE/2+2*STOPRAD-2, STOPRAD, STOPRAD);

  if(Able)
    Disp->SetFillStyle(SOLID_FILL, NBOXCOLOR);
  else
    Disp->SetFillStyle(SOLID_FILL, NOFFCOLOR);

  int radius = (int)(CCIRCLE/2);
  Disp->SetColor(BLACK);
  Disp->FillEllipse(X+NBOXSIZE/2, Y+NBOXSIZE/2+STOPRAD, radius, radius);

  if(BStatus)
    fill_box();

  Disp->Done();
  Drawn=Yes;
}

void Nodes::empty_box(int color)
{
  Disp->FastDraw();

  Disp->SetFillStyle(SOLID_FILL, color);
  int radius = (int)(CCIRCLE/2);
  Disp->SetColor(BLACK);
  Disp->FillEllipse(X+NBOXSIZE/2, Y+NBOXSIZE/2+STOPRAD, radius, radius);

  Disp->Done();

  BStatus = Off;
}

void Nodes::fill_box()
{
  Disp->FastDraw();

  Disp->SetFillStyle(SOLID_FILL, NCOLORFILL);
  Disp->SetColor(NCOLORFILL);

  int radius = (int)(CCIRCLE/2);
  Disp->SetColor(BLACK);
  Disp->FillEllipse(X+NBOXSIZE/2, Y+NBOXSIZE/2+STOPRAD, radius-NFILLSIZE, radius-NFILLSIZE);

  Disp->Done();

  BStatus = On;
}

void Nodes::animate_frame()
{
  Disp->FastDraw();

  if (Activated)
    Disp->SetColor(BLACK);
  else
    Disp->SetColor(NBOXCOLOR);

  Disp->SetLineStyle(SOLID_LINE, 0, NFRAME);

  int radius = (int)(CCIRCLE/2);
  Disp->Circle(X+NBOXSIZE/2, Y+NBOXSIZE/2+STOPRAD, radius-1);

  Disp->Done();
}

Message Nodes::Dispatch(Message &msg)
{
  switch(msg.origin) {
    case MouseMsg:
      return mouse_msg(msg);
    case KeyMsg:
      return key_msg(msg);
    case GodMsg:
      return command_msg(msg);
  }
  return msg;
}

Message Nodes::mouse_msg(Message &msg)
{
  if (ButtonBounds(msg.d1, msg.d2) && Able) {
    switch(msg.code) {
      case LMouseDown:
        Activated = True;
        animate_frame();
        return Acknowledged;
      case LMouseStillDown:
        if(!Activated) {
          Activated = True;
          animate_frame();
        }
        return NullMsg;
      case LMouseUp:
        Activated = False;
        BStatus = BStatus? Off : On;
        animate_frame();
        animate_box();
        return Message(ButtonMsg, Status, IdNum, BStatus);
      default:
        return NullMsg;
    }
  }
  if(msg.code==LMouseStillDown && Activated && Able) {
    Activated = False;
    animate_frame();
    animate_box();
  }
  return NullMsg;
}

Message Nodes::command_msg(Message &msg)
{
  if(msg.d1 != IdNum)
    return NullMsg;

  switch (msg.code) {
    case Disable:
      animate_box();
      disable_box();
      return Acknowledged;
    case Enable:
      enable_box();
      return Acknowledged;
    case RequestStatus:
      return Message(ButtonMsg, Status, IdNum, (int)status());
  }
  return NullMsg;
}

Message Nodes::key_msg(Message &)
{
/*  if (KeyBounds(msg.d1, msg.d2) && Able)
      return NullMsg; */

return NullMsg;
}

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