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gameexec.c: refactor 'starttrack' for proper bound checking.

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git-svn-id: https://svn.eduke32.com/eduke32@3490 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2013-02-16 18:53:18 +00:00
parent a3b3804a08
commit 801662c3e7
1 changed files with 24 additions and 6 deletions
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30
polymer/eduke32/source/gameexec.c
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@ -987,6 +987,24 @@ void G_GetTimeDate(int32_t *vals)
vals[7] = ti->tm_yday;
}
int32_t G_StartTrack(int32_t level)
{
if ((unsigned)level < MAXLEVELS)
{
int32_t musicIndex = MAXLEVELS*ud.volume_number + level;
if (MapInfo[g_musicIndex].musicfn != NULL)
{
g_musicIndex = musicIndex;
S_PlayMusic(MapInfo[g_musicIndex].musicfn, g_musicIndex);
return 0;
}
}
return 1;
}
#if !defined LUNATIC
GAMEEXEC_STATIC void VM_Execute(int32_t loop)
{
@ -4618,14 +4636,14 @@ nullquote:
case CON_STARTTRACK:
case CON_STARTTRACKVAR:
insptr++;
if (tw == CON_STARTTRACK) g_musicIndex=(ud.volume_number*MAXLEVELS)+(*(insptr++));
else g_musicIndex=(ud.volume_number*MAXLEVELS)+(Gv_GetVarX(*(insptr++)));
if (MapInfo[g_musicIndex].musicfn == NULL)
{
CON_ERRPRINTF("null music for map %d\n", g_musicIndex);
continue;
int32_t level = (tw == CON_STARTTRACK) ? *(insptr++) :
Gv_GetVarX(*(insptr++));
if (G_StartTrack(level))
CON_ERRPRINTF("invalid level %d or null music for volume %d level %d\n",
level, ud.volume_number, level);
}
S_PlayMusic(&MapInfo[g_musicIndex].musicfn[0],g_musicIndex);
continue;
case CON_ACTIVATECHEAT: