X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Flibgame%2Fsound.c;h=15354b68575dbc6b95b97563b996905ed17f24cb;hb=eb017c47e0685e8a43fe8b3a022429017c67c6bc;hp=ea055503cbaa0204a18f0c8ba6e88b8b8fe8a82c;hpb=7b3991f74b0e0dc6774453a59e674696560c2d93;p=rocksndiamonds.git

diff --git a/src/libgame/sound.c b/src/libgame/sound.c
index ea055503..15354b68 100644
--- a/src/libgame/sound.c
+++ b/src/libgame/sound.c
@@ -303,32 +303,11 @@ static void Mixer_InsertSound(SoundControl snd_ctrl)
 {
   SoundInfo *snd_info;
   int i, k;
-  int num_sounds = getSoundListSize();
-  int num_music  = getMusicListSize();
 
   if (IS_MUSIC(snd_ctrl))
-  {
-    if (snd_ctrl.nr >= num_music)	/* invalid music */
-      return;
-
-    if (snd_ctrl.nr < 0)		/* undefined music */
-    {
-      if (num_music_noconf == 0)	/* no fallback music available */
-	return;
-
-      snd_ctrl.nr = UNMAP_NOCONF_MUSIC(snd_ctrl.nr) % num_music_noconf;
-      snd_info = Music_NoConf[snd_ctrl.nr];
-    }
-    else
-      snd_info = getMusicInfoEntryFromMusicID(snd_ctrl.nr);
-  }
+    snd_info = getMusicInfoEntryFromMusicID(snd_ctrl.nr);
   else
-  {
-    if (snd_ctrl.nr < 0 || snd_ctrl.nr >= num_sounds)
-      return;
-
     snd_info = getSoundInfoEntryFromSoundID(snd_ctrl.nr);
-  }
 
   if (snd_info == NULL)
     return;
@@ -687,41 +666,67 @@ int getMusicListSize()
 
 struct FileInfo *getSoundListEntry(int pos)
 {
+  int num_sounds = getSoundListSize();
   int num_list_entries = sound_info->num_file_list_entries;
   int list_pos = (pos < num_list_entries ? pos : pos - num_list_entries);
 
+  if (pos < 0 || pos >= num_sounds)	/* invalid sound */
+    return NULL;
+
   return (pos < num_list_entries ? &sound_info->file_list[list_pos] :
 	  &sound_info->dynamic_file_list[list_pos]);
 }
 
 struct FileInfo *getMusicListEntry(int pos)
 {
+  int num_music = getMusicListSize();
   int num_list_entries = music_info->num_file_list_entries;
   int list_pos = (pos < num_list_entries ? pos : pos - num_list_entries);
 
+  if (pos < 0 || pos >= num_music)	/* invalid music */
+    return NULL;
+
   return (pos < num_list_entries ? &music_info->file_list[list_pos] :
 	  &music_info->dynamic_file_list[list_pos]);
 }
 
 static SoundInfo *getSoundInfoEntryFromSoundID(int pos)
 {
+  int num_sounds = getSoundListSize();
   int num_list_entries = sound_info->num_file_list_entries;
   int list_pos = (pos < num_list_entries ? pos : pos - num_list_entries);
   SoundInfo **snd_info =
     (SoundInfo **)(pos < num_list_entries ? sound_info->artwork_list :
 		   sound_info->dynamic_artwork_list);
 
+  if (pos < 0 || pos >= num_sounds)	/* invalid sound */
+    return NULL;
+
   return snd_info[list_pos];
 }
 
 static MusicInfo *getMusicInfoEntryFromMusicID(int pos)
 {
+  int num_music = getMusicListSize();
   int num_list_entries = music_info->num_file_list_entries;
   int list_pos = (pos < num_list_entries ? pos : pos - num_list_entries);
   MusicInfo **mus_info =
     (MusicInfo **)(pos < num_list_entries ? music_info->artwork_list :
 		   music_info->dynamic_artwork_list);
 
+  if (pos >= num_music)			/* invalid music */
+    return NULL;
+
+  if (pos < 0)				/* undefined music */
+  {
+    if (num_music_noconf == 0)		/* no fallback music available */
+      return NULL;
+
+    pos = UNMAP_NOCONF_MUSIC(pos) % num_music_noconf;
+
+    return Music_NoConf[pos];
+  }
+
   return mus_info[list_pos];
 }