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actions.c

/*
 *  acm : an aerial combat simulator for X
 *  Copyright (C) 1991-1994  Riley Rainey
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; version 2 dated June, 1991.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program;  if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave., Cambridge, MA 02139, USA.
 */
#include <sys/types.h>
#include <X11/Intrinsic.h>

#include <client.h>
#define MIN_THROTTLE    8192
#define MAX_THROTTLE    32768
#define FL_TRIGGER      0

extern void PostTriggerDown PARAMS((void));
extern void PostTriggerUp PARAMS((void));
extern void PostLaunchDrone PARAMS((void));

/* ARGSUSED */
void
SetThrottle (w, event, params, num_params)
Widget            w;
XEvent            *event;
String            *params;
Cardinal    *num_params; {

      register char     *p;
      register long     value;


      if (*num_params == 1) {

            p = *params;
            value = atol(p);

            if (player_id >= 0) {
                  if (*p == '+' || *p == '-')
                        ptbl[player_id].throttle += value;
                  else
                        ptbl[player_id].throttle = value;

                  if (ptbl[player_id].throttle < MIN_THROTTLE)
                        ptbl[player_id].throttle = MIN_THROTTLE;

                  if (ptbl[player_id].throttle > MAX_THROTTLE)
                        ptbl[player_id].throttle = MAX_THROTTLE;
            } 
      }
      else
            fprintf (stderr,"bad number of parameters on set-throttle()\n");

}

/* ARGSUSED */
void
SetRudder (w, event, params, num_params)
Widget            w;
XEvent            *event;
String            *params;
Cardinal    *num_params; {

      register char     *p;
      register long     value, current;


      if (*num_params == 1) {

            p = *params;
            value = atol(p);

            if (player_id >= 0) {

                  current = ptbl[player_id].Sr * 32768.0;
            
                  if (*p == '+' || *p == '-')
                        current += value;
                  else
                        current = value;

                  if (ptbl[player_id].throttle < -32768)
                        ptbl[player_id].throttle = -32768;

                  if (ptbl[player_id].throttle > 32768)
                        ptbl[player_id].throttle = 32768;

                  ptbl[player_id].Sr = (double) current / 32768.0;

            } 
      }
      else
            fprintf (stderr,"bad number of parameters on set-rudder()\n");

}

/* ARGSUSED */
void
Afterburner (w, event, params, num_params)
Widget            w;
XEvent            *event;
String            *params;
Cardinal    *num_params; {

      char  *p;

      if (*num_params == 0) {

            if (player_id >= 0) {

                  ptbl[player_id].flags ^= FL_AFTERBURNER;

            } 
      }
      else if (*num_params == 1) {
            p = *params;
            if (player_id >= 0) {

                  if (strcmp (p, "1") == 0)
                        ptbl[player_id].flags |= FL_AFTERBURNER;
                  else if (strcmp (p, "0") == 0)
                        ptbl[player_id].flags &= ~FL_AFTERBURNER;
                  else
                        fprintf (stderr,
                              "bad afterburner parameter: %s\n", p);
            } 
      }
      else {
            fprintf (stderr,"bad number of parameters on afterburner()\n");
      }

}

/* ARGSUSED */
void
ToggleGear (w, event, params, num_params)
Widget            w;
XEvent            *event;
String            *params;
Cardinal    *num_params; {

      if (*num_params == 0) {

            if (player_id >= 0) {

                  ptbl[player_id].flags ^= FL_GHANDLE_DN;

            } 
      }
      else
            fprintf (stderr,"bad number of parameters on toggle-gear()\n");

}

/* ARGSUSED */
void
ToggleBrakes (w, event, params, num_params)
Widget            w;
XEvent            *event;
String            *params;
Cardinal    *num_params; {

      if (*num_params == 0) {

            if (player_id >= 0) {

                  ptbl[player_id].flags ^= FL_BRAKES;

            } 
      }
      else
            fprintf(stderr,"bad number of parameters on toggle-brakes()\n");

}

static      VPoint      up =  {0.0, 0.0, -1.0};
static      VPoint      back =      {-1.0, 0.0, 0.0};
static      VPoint      zero =      { 0.0, 0.0, 0.0};

/* ARGSUSED */
void
SetView (w, event, params, num_params)
Widget            w;
XEvent            *event;
String            *params;
Cardinal    *num_params; {


      craft *c;
      char  *s;

      s = *params;

      if (*num_params == 1) {

            if (player_id >= 0) {

                  c = &ptbl[player_id];
                  c->viewDirection = zero;
                  c->viewUp = up;

                  if (strcmp (s, "forward") == 0)
                        c->viewDirection.x = 1.0;
                  if (strcmp (s, "aft") == 0)
                        c->viewDirection.x = -1.0;
                  else if (strcmp (s, "right") == 0)
                        c->viewDirection.y = 1.0;
                  else if (strcmp (s, "left") == 0)
                        c->viewDirection.y = -1.0;
                  else if (strcmp (s, "up") == 0) {
                        c->viewDirection = up;
                        c->viewUp = back;
                  }

            } 
      }
      else
            fprintf (stderr,"bad number of parameters on look()\n");

}

/* ARGSUSED */
void
Trigger (w, event, params, num_params)
Widget            w;
XEvent            *event;
String            *params;
Cardinal    *num_params; {

      register unsigned char  *p;

      p = *params;

      if (*num_params == 1) {

            if (player_id >= 0) {

                  if (strcmp (p, "press") == 0)
                        PostTriggerDown();
                  else if (strcmp (p, "release") == 0)
                        PostTriggerUp();
                  else
                        fprintf (stderr,
                              "bad trigger parameter: %s\n", p);

            }
      }
      else
            fprintf (stderr,"bad number of parameters on trigger()\n");

}

/* ARGSUSED */
void
SelectWeapon (w, event, params, num_params)
Widget            w;
XEvent            *event;
String            *params;
Cardinal    *num_params; {

      if (*num_params == 0) {
            if (player_id >= 0) {
                  selectWeapon (&ptbl[player_id]);
            }
      }
      else
            fprintf (stderr,"bad number of parameters on select-weapon()\n");

}


/* ARGSUSED */
void
LaunchDrone (w, event, params, num_params)
Widget            w;
XEvent            *event;
String            *params;
Cardinal    *num_params;
{
      register unsigned char  *p;

      p = *params;

      if (*num_params == 0) {

            if (player_id >= 0) {

                  PostLaunchDrone();

            }
      }
      else
            fprintf (stderr,"bad number of parameters on launch-drone()\n");

}


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