rnd-19981021-1
[rocksndiamonds.git] / src / misc.c
index a066cff5dcfa5cbdc26c0db36158551e3463b3bd..e2c8d7e0bafbf52a8c11ebd91d38c67678fb5b72 100644 (file)
 /***********************************************************
 *  Rocks'n'Diamonds -- McDuffin Strikes Back!              *
 *----------------------------------------------------------*
-*  ©1995 Artsoft Development                               *
-*        Holger Schemel                                    *
-*        33659 Bielefeld-Senne                             *
-*        Telefon: (0521) 493245                            *
-*        eMail: aeglos@valinor.owl.de                      *
-*               aeglos@uni-paderborn.de                    *
-*               q99492@pbhrzx.uni-paderborn.de             *
+*  (c) 1995-98 Artsoft Entertainment                       *
+*              Holger Schemel                              *
+*              Oststrasse 11a                              *
+*              33604 Bielefeld                             *
+*              phone: ++49 +521 290471                     *
+*              email: aeglos@valinor.owl.de                *
 *----------------------------------------------------------*
 *  misc.c                                                  *
-*                                                          *
-*  Letzte Aenderung: 15.06.1995                            *
 ***********************************************************/
 
-#include "misc.h"
-#include "tools.h"
-#include "sound.h"
 #include <pwd.h>
 #include <unistd.h>
 #include <time.h>
 #include <sys/time.h>
 #include <sys/param.h>
 #include <sys/types.h>
+#include <stdarg.h>
+
+#include "misc.h"
+#include "init.h"
+#include "tools.h"
+#include "sound.h"
+#include "random.h"
+
+static unsigned long mainCounter(int mode)
+{
+  static struct timeval base_time = { 0, 0 };
+  struct timeval current_time;
+  unsigned long counter_ms;
+
+  gettimeofday(&current_time, NULL);
+
+  if (mode == INIT_COUNTER || current_time.tv_sec < base_time.tv_sec)
+    base_time = current_time;
+
+  counter_ms = (current_time.tv_sec  - base_time.tv_sec)  * 1000
+             + (current_time.tv_usec - base_time.tv_usec) / 1000;
+
+  return counter_ms;           /* return milliseconds since last init */
+}
+
+void InitCounter()             /* set counter back to zero */
+{
+  mainCounter(INIT_COUNTER);
+}
+
+unsigned long Counter()        /* get milliseconds since last call of InitCounter() */
+{
+  return(mainCounter(READ_COUNTER));
+}
+
+static void sleep_milliseconds(unsigned long milliseconds_delay)
+{
+  if (milliseconds_delay < 5)
+  {
+    /* we want to wait only a few ms -- if we assume that we have a
+       kernel timer resolution of 10 ms, we would wait far to long;
+       therefore it's better to do a short interval of busy waiting
+       to get our sleeping time more accurate */
+
+    unsigned long base_counter = Counter(), actual_counter = Counter();
+
+    while (actual_counter < base_counter + milliseconds_delay &&
+          actual_counter >= base_counter)
+      actual_counter = Counter();
+  }
+  else
+  {
+    struct timeval delay;
+
+    delay.tv_sec  = milliseconds_delay / 1000;
+    delay.tv_usec = 1000 * (milliseconds_delay % 1000);
+
+    if (select(0, NULL, NULL, NULL, &delay) != 0)
+      Error(ERR_RETURN, "sleep_milliseconds(): select() failed");
+  }
+}
+
+void Delay(unsigned long delay)        /* Sleep specified number of milliseconds */
+{
+  sleep_milliseconds(delay);
+}
 
-void microsleep(unsigned long usec)
+boolean FrameReached(unsigned long *frame_counter_var,
+                    unsigned long frame_delay)
 {
-  struct timeval delay;
+  unsigned long actual_frame_counter = FrameCounter;
 
-  delay.tv_sec  = usec / 1000000;
-  delay.tv_usec = usec % 1000000;
+  if (actual_frame_counter < *frame_counter_var+frame_delay &&
+      actual_frame_counter >= *frame_counter_var)
+    return(FALSE);
 
-  if (select(0,NULL,NULL,NULL,&delay)!=0)
-    fprintf(stderr,"%s: in function microsleep: select failed!\n",
-           progname);
+  *frame_counter_var = actual_frame_counter;
+  return(TRUE);
 }
 
-unsigned long be2long(unsigned long *be)       /* big-endian -> longword */
+boolean DelayReached(unsigned long *counter_var,
+                    unsigned long delay)
 {
-  unsigned char *ptr = (unsigned char *)be;
+  unsigned long actual_counter = Counter();
+
+  if (actual_counter < *counter_var + delay &&
+      actual_counter >= *counter_var)
+    return(FALSE);
+
+  *counter_var = actual_counter;
+  return(TRUE);
+}
+
+void WaitUntilDelayReached(unsigned long *counter_var, unsigned long delay)
+{
+  unsigned long actual_counter;
+
+  while(1)
+  {
+    actual_counter = Counter();
 
-  return(ptr[0]<<24 | ptr[1]<<16 | ptr[2]<<8 | ptr[3]);
+    if (actual_counter < *counter_var + delay &&
+       actual_counter >= *counter_var)
+      sleep_milliseconds((*counter_var + delay - actual_counter) / 2);
+    else
+      break;
+  }
+
+  *counter_var = actual_counter;
 }
 
 char *int2str(int ct, int nr)
@@ -51,9 +136,19 @@ char *int2str(int ct, int nr)
   return(&str[strlen(str)-nr]);
 }
 
+unsigned int SimpleRND(unsigned int max)
+{
+  static unsigned long root = 654321;
+  struct timeval current_time;
+
+  gettimeofday(&current_time,NULL);
+  root = root * 4253261 + current_time.tv_sec + current_time.tv_usec;
+  return(root % max);
+}
+
 unsigned int RND(unsigned int max)
 {
-  return(rand() % max);
+  return(random_linux_libc() % max);
 }
 
 unsigned int InitRND(long seed)
@@ -63,12 +158,12 @@ unsigned int InitRND(long seed)
   if (seed==NEW_RANDOMIZE)
   {
     gettimeofday(&current_time,NULL);
-    srand((unsigned int) current_time.tv_usec);
+    srandom_linux_libc((unsigned int) current_time.tv_usec);
     return((unsigned int) current_time.tv_usec);
   }
   else
   {
-    srand((unsigned int) seed);
+    srandom_linux_libc((unsigned int) seed);
     return((unsigned int) seed);
   }
 }
@@ -83,294 +178,297 @@ char *GetLoginName()
     return(pwd->pw_name);
 }
 
-static struct AnimInfo toon[NUM_TOONS] =
+void MarkTileDirty(int x, int y)
 {
-  DWARF_XSIZE, DWARF_YSIZE,
-  DWARF_X, DWARF_Y,
-  DWARF_FRAMES,
-  DWARF_FPS,
-  DWARF_STEPSIZE,
-  FALSE,
-  ANIMDIR_RIGHT,
-  ANIMPOS_DOWN,
-
-  DWARF_XSIZE, DWARF_YSIZE,
-  DWARF_X, DWARF2_Y,
-  DWARF_FRAMES,
-  DWARF_FPS,
-  DWARF_STEPSIZE,
-  FALSE,
-  ANIMDIR_LEFT,
-  ANIMPOS_DOWN,
-
-  JUMPER_XSIZE, JUMPER_YSIZE,
-  JUMPER_X, JUMPER_Y,
-  JUMPER_FRAMES,
-  JUMPER_FPS,
-  JUMPER_STEPSIZE,
-  FALSE,
-  ANIMDIR_LEFT,
-  ANIMPOS_DOWN,
-
-  CLOWN_XSIZE, CLOWN_YSIZE,
-  CLOWN_X, CLOWN_Y,
-  CLOWN_FRAMES,
-  CLOWN_FPS,
-  CLOWN_STEPSIZE,
-  FALSE,
-  ANIMDIR_UP,
-  ANIMPOS_ANY,
-
-  BIRD_XSIZE, BIRD_YSIZE,
-  BIRD1_X, BIRD1_Y,
-  BIRD_FRAMES,
-  BIRD_FPS,
-  BIRD_STEPSIZE,
-  TRUE,
-  ANIMDIR_RIGHT,
-  ANIMPOS_UPPER,
-
-  BIRD_XSIZE, BIRD_YSIZE,
-  BIRD2_X, BIRD2_Y,
-  BIRD_FRAMES,
-  BIRD_FPS,
-  BIRD_STEPSIZE,
-  TRUE,
-  ANIMDIR_LEFT,
-  ANIMPOS_UPPER
-};
-
-void InitAnimation()
-{
-  HandleAnimation(ANIM_START);
-}
-
-void StopAnimation()
-{
-  HandleAnimation(ANIM_STOP);
-}
+  int xx = redraw_x1 + x;
+  int yy = redraw_y1 + y;
 
-void DoAnimation()
-{
-  HandleAnimation(ANIM_CONTINUE);
+  if (!redraw[xx][yy])
+  {
+    redraw[xx][yy] = TRUE;
+    redraw_tiles++;
+    redraw_mask |= REDRAW_TILES;
+  }
 }
 
-void HandleAnimation(int mode)
+void GetOptions(char *argv[])
 {
-  static long animstart_delay = -1;
-  static long animstart_delay_value = 0;
-  static BOOL anim_restart = TRUE;
-  static BOOL reset_delay = TRUE;
-  static int toon_nr = 0;
+  char **options_left = &argv[1];
 
-  if (!toons_on || game_status==PLAYING)
-    return;
+  /* initialize global program options */
+  options.display_name = NULL;
+  options.server_host = NULL;
+  options.server_port = 0;
+  options.serveronly = FALSE;
+  options.network = FALSE;
+  options.verbose = FALSE;
 
-  switch(mode)
+  while (*options_left)
   {
-    case ANIM_START:
-      anim_restart = TRUE;
-      reset_delay = TRUE;
-      return;
-      break;
-    case ANIM_CONTINUE:
-      break;
-    case ANIM_STOP:
-      redraw_mask |= REDRAW_FIELD;
-      BackToFront();
-      return;
-      break;
-    default:
+    char option_str[MAX_OPTION_LEN];
+    char *option = options_left[0];
+    char *next_option = options_left[1];
+    char *option_arg = NULL;
+    int option_len = strlen(option);
+
+    strcpy(option_str, option);                        /* copy argument into buffer */
+    option = option_str;
+
+    if (strcmp(option, "--") == 0)             /* stop scanning arguments */
       break;
-  }
 
-  if (reset_delay)
-  {
-    animstart_delay = Counter();
-    animstart_delay_value = RND(500);
-    reset_delay = FALSE;
-  }
+    if (option_len >= MAX_OPTION_LEN)
+      Error(ERR_EXIT_HELP, "unrecognized option '%s'", option);
 
-  if (anim_restart)
-  {
-    if (!DelayReached(&animstart_delay,animstart_delay_value))
-      return;
+    if (strncmp(option, "--", 2) == 0)         /* treat '--' like '-' */
+      option++;
 
-    toon_nr = RND(NUM_TOONS);
-  }
+    option_arg = strchr(option, '=');
+    if (option_arg == NULL)                    /* no '=' in option */
+      option_arg = next_option;
+    else
+    {
+      *option_arg++ = '\0';                    /* cut argument from option */
+      if (*option_arg == '\0')                 /* no argument after '=' */
+       Error(ERR_EXIT_HELP, "option '%s' has invalid argument", option_str);
+    }
 
-  anim_restart = reset_delay = AnimateToon(toon_nr,anim_restart);
-}
+    option_len = strlen(option);
 
-BOOL AnimateToon(int toon_nr, BOOL restart)
-{
-  static pos_x = 0, pos_y = 0;
-  static delta_x = 0, delta_y = 0;
-  static int frame = 0, frame_step = 1;
-  static BOOL horiz_move, vert_move;
-  static long anim_delay = 0;
-  static int anim_delay_value = 0;
-  struct AnimInfo *anim = &toon[toon_nr];
-  static int width,height;
-  static int pad_x,pad_y;
-  static int cut_x,cut_y;
-  static int src_x, src_y;
-  static int dest_x, dest_y;
-
-  if (restart)
-  {
-    horiz_move = (anim->direction & (ANIMDIR_LEFT | ANIMDIR_RIGHT));
-    vert_move = (anim->direction & (ANIMDIR_UP | ANIMDIR_DOWN));
-    anim_delay_value = 100/anim->frames_per_second;
-    frame = 0;
+    if (strcmp(option, "-") == 0)
+      Error(ERR_EXIT_HELP, "unrecognized option '%s'", option);
+    else if (strncmp(option, "-help", option_len) == 0)
+    {
+      printf("Usage: %s [options] [server.name [port]]\n"
+            "Options:\n"
+            "  -d, --display machine:0       X server display\n"
+            "  -l, --levels directory        alternative level directory\n"
+            "  -s, --serveronly              only start network server\n"
+            "  -n, --network                 network multiplayer game\n"
+            "  -v, --verbose                 verbose mode\n",
+            program_name);
+      exit(0);
+    }
+    else if (strncmp(option, "-display", option_len) == 0)
+    {
+      if (option_arg == NULL)
+       Error(ERR_EXIT_HELP, "option '%s' requires an argument", option_str);
 
-    if (horiz_move)
+      options.display_name = option_arg;
+      if (option_arg == next_option)
+       options_left++;
+
+      printf("--display == '%s'\n", options.display_name);
+    }
+    else if (strncmp(option, "-levels", option_len) == 0)
     {
-      if (anim->position==ANIMPOS_UP)
-       pos_y = 0;
-      else if (anim->position==ANIMPOS_DOWN)
-       pos_y = FULL_SYSIZE-anim->height;
-      else if (anim->position==ANIMPOS_UPPER)
-       pos_y = RND((FULL_SYSIZE-anim->height)/2);
-      else
-       pos_y = RND(FULL_SYSIZE-anim->height);
-
-      if (anim->direction==ANIMDIR_RIGHT)
-      {
-       delta_x = anim->stepsize;
-       pos_x = -anim->width+delta_x;
-      }
-      else
-      {
-       delta_x = -anim->stepsize;
-       pos_x = FULL_SXSIZE+delta_x;
-      }
-      delta_y = 0;
+      if (option_arg == NULL)
+       Error(ERR_EXIT_HELP, "option '%s' requires an argument", option_str);
+
+      level_directory = option_arg;
+      if (option_arg == next_option)
+       options_left++;
+
+      printf("--levels == '%s'\n", level_directory);
+    }
+    else if (strncmp(option, "-network", option_len) == 0)
+    {
+      printf("--network\n");
+
+      options.network = TRUE;
+    }
+    else if (strncmp(option, "-serveronly", option_len) == 0)
+    {
+      printf("--serveronly\n");
+
+      options.serveronly = TRUE;
+    }
+    else if (strncmp(option, "-verbose", option_len) == 0)
+    {
+      printf("--verbose\n");
+
+      options.verbose = TRUE;
+    }
+    else if (*option == '-')
+      Error(ERR_EXIT_HELP, "unrecognized option '%s'", option_str);
+    else if (options.server_host == NULL)
+    {
+      options.server_host = *options_left;
+
+      printf("server.name == '%s'\n", options.server_host);
+    }
+    else if (options.server_port == 0)
+    {
+      options.server_port = atoi(*options_left);
+      if (options.server_port < 1024)
+       Error(ERR_EXIT_HELP, "bad port number '%d'", options.server_port);
+
+      printf("port == %d\n", options.server_port);
     }
     else
+      Error(ERR_EXIT_HELP, "too many arguments");
+
+    options_left++;
+  }
+}
+
+void Error(int mode, char *format_str, ...)
+{
+  FILE *output_stream = stderr;
+  char *process_name = "";
+
+  if (mode == ERR_EXIT_SOUNDSERVER)
+    process_name = " sound server";
+
+  if (format_str)
+  {
+    va_list ap;
+    char *format_ptr;
+    char *s_value;
+    int i_value;
+    double d_value;
+
+    fprintf(output_stream, "%s%s: ", program_name, process_name);
+
+    va_start(ap, format_str);  /* ap points to first unnamed argument */
+  
+    for(format_ptr=format_str; *format_ptr; format_ptr++)
     {
-      if (anim->position==ANIMPOS_LEFT)
-       pos_x = 0;
-      else if (anim->position==ANIMPOS_RIGHT)
-       pos_x = FULL_SXSIZE-anim->width;
-      else
-       pos_x = RND(FULL_SXSIZE-anim->width);
-
-      if (anim->direction==ANIMDIR_DOWN)
+      if (*format_ptr != '%')
       {
-       delta_y = anim->stepsize;
-       pos_y = -anim->height+delta_y;
+       fprintf(output_stream, "%c", *format_ptr);
+       continue;
       }
-      else
+  
+      switch(*++format_ptr)
       {
-       delta_y = -anim->stepsize;
-       pos_y = FULL_SYSIZE+delta_y;
+       case 'd':
+         i_value = va_arg(ap, int);
+         fprintf(output_stream, "%d", i_value);
+         break;
+  
+       case 'f':
+         d_value = va_arg(ap, double);
+         fprintf(output_stream, "%f", d_value);
+         break;
+  
+       case 's':
+         s_value = va_arg(ap, char *);
+         fprintf(output_stream, "%s", s_value);
+         break;
+  
+       default:
+         fprintf(stderr, "\n%s: Error(): invalid format string: %s\n",
+                 program_name, format_str);
+         CloseAllAndExit(10);
       }
-      delta_x = 0;
     }
-  }
-
-  if (pos_x <= -anim->width  - anim->stepsize ||
-      pos_x >=  FULL_SXSIZE  + anim->stepsize ||
-      pos_y <= -anim->height - anim->stepsize ||
-      pos_y >=  FULL_SYSIZE  + anim->stepsize)
-    return(TRUE);
-
-  if (!DelayReached(&anim_delay,anim_delay_value))
-  {
-    if (game_status==HELPSCREEN && !restart)
-      DrawAnim(src_x+cut_x,src_y+cut_y, width,height,
-              REAL_SX+dest_x,REAL_SY+dest_y, pad_x,pad_y);
 
-    return(FALSE);
+    va_end(ap);
+  
+    fprintf(output_stream, "\n");
   }
+  
+  if (mode == ERR_EXIT_HELP)
+    fprintf(output_stream, "%s: Try option '--help' for more information.\n",
+           program_name);
 
-  if (pos_x<-anim->width)
-    pos_x = -anim->width;
-  else if (pos_x>FULL_SXSIZE)
-    pos_x = FULL_SXSIZE;
-  if (pos_y<-anim->height)
-    pos_y = -anim->height;
-  else if (pos_y>FULL_SYSIZE)
-    pos_y = FULL_SYSIZE;
-
-  pad_x = (horiz_move ? anim->stepsize : 0);
-  pad_y = (vert_move  ? anim->stepsize : 0);
-  src_x = anim->src_x + frame * anim->width;
-  src_y = anim->src_y;
-  dest_x = pos_x;
-  dest_y = pos_y;
-  cut_x = cut_y = 0;
-  width  = anim->width;
-  height = anim->height;
-
-  if (pos_x<0)
+  if (mode != ERR_RETURN)
   {
-    dest_x = 0;
-    width += pos_x;
-    cut_x = -pos_x;
+    fprintf(output_stream, "%s%s: aborting\n", program_name, process_name);
+    CloseAllAndExit(1);
   }
-  else if (pos_x>FULL_SXSIZE-anim->width)
-    width -= (pos_x - (FULL_SXSIZE-anim->width));
+}
 
-  if (pos_y<0)
-  {
-    dest_y = 0;
-    height += pos_y;
-    cut_y = -pos_y;
-  }
-  else if (pos_y>FULL_SYSIZE-anim->height)
-    height -= (pos_y - (FULL_SYSIZE-anim->height));
+void *checked_malloc(unsigned long size)
+{
+  void *ptr;
+
+  ptr = malloc(size);
 
-  DrawAnim(src_x+cut_x,src_y+cut_y, width,height,
-          REAL_SX+dest_x,REAL_SY+dest_y, pad_x,pad_y);
+  if (ptr == NULL)
+    Error(ERR_EXIT, "cannot allocate %d bytes -- out of memory", size);
 
-  pos_x += delta_x;
-  pos_y += delta_y;
-  frame += frame_step;
+  return ptr;
+}
 
-  if (frame<0 || frame>=anim->frames)
+char *getKeySymName(KeySym key)
+{
+  static char key_name[20];
+  static struct
   {
-    if (anim->pingpong)
-    {
-      frame_step *= -1;
-      frame = (frame<0 ? 1 : anim->frames-2);
-    }
-    else
-      frame = (frame<0 ? anim->frames-1 : 0);
+    KeySym keysym;
+    char *name;
+  } translate[] =
+  {
+    { XK_Left,         "cursor left" },
+    { XK_Right,                "cursor right" },
+    { XK_Up,           "cursor up" },
+    { XK_Down,         "cursor down" },
+
+#ifdef XK_KP_Left
+    { XK_KP_Left,      "keypad left" },
+    { XK_KP_Right,     "keypad right" },
+    { XK_KP_Up,                "keypad up" },
+    { XK_KP_Down,      "keypad down" },
+#endif
+
+    { XK_BackSpace,    "backspace" },
+    { XK_Delete,       "delete" },
+    { XK_Insert,       "insert" },
+    { XK_Tab,          "tab" },
+    { XK_Home,         "home" },
+    { XK_End,          "end" },
+    { XK_Page_Up,      "page up" },
+    { XK_Page_Down,    "page down" },
+    { XK_space,                "space" },
+
+    { XK_Shift_L,      "left shift" },
+    { XK_Shift_R,      "right shift" },
+    { XK_Control_L,    "left ctrl" },
+    { XK_Control_R,    "right ctrl" },
+    { XK_Meta_L,       "left meta" },
+    { XK_Meta_R,       "right meta" },
+    { XK_Alt_L,                "left alt" },
+    { XK_Alt_R,                "right alt" },
+    { XK_Mode_switch,  "mode switch" },
+    { XK_Multi_key,    "multi key" },
+
+    { 0,                NULL }
+  };
+
+  if (key >= XK_A && key <= XK_Z)
+  {
+    sprintf(key_name, "%c", 'A' + (char)(key - XK_A));
+    return key_name;
+  }
+  else if (key >= XK_a && key <= XK_z)
+  {
+    sprintf(key_name, "%c", 'a' + (char)(key - XK_a));
+    return key_name;
+  }
+  else if (key >= XK_0 && key <= XK_9)
+  {
+    sprintf(key_name, "%c", '0' + (char)(key - XK_0));
+    return key_name;
   }
+  else if (key >= XK_KP_0 && key <= XK_KP_9)
+  {
+    sprintf(key_name, "keypad %c", '0' + (char)(key - XK_KP_0));
+    return key_name;
+  }
+  else
+  {
+    int i = 0;
 
-  return(FALSE);
-}
+    do
+    {
+      if (key == translate[i].keysym)
+       return translate[i].name;
+    }
+    while (translate[++i].name);
 
-void DrawAnim(int src_x, int src_y, int width, int height,
-             int dest_x, int dest_y, int pad_x, int pad_y)
-{
-  int buf_x = DOOR_GFX_PAGEX3, buf_y = DOOR_GFX_PAGEY1;
-
-  XCopyArea(display,backbuffer,pix[PIX_DB_DOOR],gc,dest_x-pad_x,dest_y-pad_y,
-           width+2*pad_x,height+2*pad_y, buf_x,buf_y);
-  XSetClipOrigin(display,clip_gc[PIX_TOONS],dest_x-src_x,dest_y-src_y);
-  XCopyArea(display,pix[PIX_TOONS],backbuffer,clip_gc[PIX_TOONS],
-           src_x,src_y, width,height, dest_x,dest_y);
-  XCopyArea(display,backbuffer,window,gc, dest_x-pad_x,dest_y-pad_y,
-           width+2*pad_x,height+2*pad_y, dest_x-pad_x,dest_y-pad_y);
-
-  BackToFront();
-
-  XCopyArea(display,pix[PIX_DB_DOOR],backbuffer,gc, buf_x,buf_y,
-           width+2*pad_x,height+2*pad_y, dest_x-pad_x,dest_y-pad_y);
-
-/*
-  XCopyArea(display,backbuffer,pix[PIX_DB_DOOR],gc,dest_x-pad_x,dest_y-pad_y,
-           width+2*pad_x,height+2*pad_y, buf_x,buf_y);
-  XSetClipOrigin(display,clip_gc[PIX_TOONS],
-                buf_x-src_x+pad_x,buf_y-src_y+pad_y);
-  XCopyArea(display,pix[PIX_TOONS],pix[PIX_DB_DOOR],clip_gc[PIX_TOONS],
-           src_x,src_y, width,height, buf_x+pad_x,buf_y+pad_y);
-  XCopyArea(display,pix[PIX_DB_DOOR],window,gc, buf_x,buf_y,
-           width+2*pad_x,height+2*pad_y, dest_x-pad_x,dest_y-pad_y);
-*/
-
-  XFlush(display);
+    sprintf(key_name, "(unknown)");
+    return key_name;
+  }
 }