Added FMOD library support (needs work)

removed extra initializer
fmod.c int to int32_t
fmod support now functional
Added snd_lib check in windmain
fmod_ambience func for future implementation
updated some funcs
(CAN'T BUILD) -- static'd vars

sound/fmod/fmod.c

@@ -0,0 +1,99 @@
+/* Copyright (c) Taylor Daley, 2023. */
+/* fmod.c */
+/* NetHack may be freely redistributed.  See license for details. */
+
+#ifdef SND_LIB_FMOD
+
+#include "hack.h"
+#include "fmod.h"
+
+static FMOD_SYSTEM *systemvar;
+static FMOD_SOUND *soundvar;
+static FMOD_CHANNEL *channel1;
+static FMOD_CHANNEL *channelMus;
+
+static void fmod_init_nhsound(void);
+static void fmod_exit_nhsound(const char *);
+static void fmod_achievement(schar, schar, int32_t);
+static void fmod_soundeffect(char *, int32_t, int32_t);
+static void fmod_hero_playnotes(int32_t, const char *, int32_t);
+static void fmod_play_usersound(const char *, int32_t, int32_t);
+static void fmod_ambience(int32_t, int32_t, int32_t);
+static void fmod_verbal(char *, int32_t, int32_t, int32_t, int32_t);
+
+struct sound_procs fmod_procs = {
+    SOUNDID(fmod),
+    SOUND_TRIGGER_USERSOUNDS | 0,
+    fmod_init_nhsound,
+    fmod_exit_nhsound,
+    fmod_achievement,
+    fmod_soundeffect,
+    fmod_hero_playnotes,
+    fmod_play_usersound,
+    fmod_ambience,
+    fmod_verbal
+};
+
+static void
+fmod_init_nhsound(void)
+{
+    /* Initialize external sound library */
+    FMOD_System_Create(&systemvar, FMOD_VERSION);
+    FMOD_System_Init(systemvar, 32, FMOD_INIT_NORMAL, 0);
+}
+
+static void
+fmod_exit_nhsound(const char *reason)
+{
+    /* Close / Terminate external sound library */
+    FMOD_System_Close(&systemvar);
+    FMOD_System_Release(&systemvar);
+}
+
+/* fulfill SNDCAP_ACHIEVEMENTS */
+static void
+fmod_achievement(schar ach1, schar ach2, int32_t repeat)
+{
+    //  to be added in future
+}
+
+/* fulfill SNDCAP_SOUNDEFFECTS */
+static void
+fmod_soundeffect(char *desc, int32_t seid, int32_t volume)
+{
+    //  to be added in future
+}
+
+/* fulfill SNDCAP_HEROMUSIC */
+static void fmod_hero_playnotes(int32_t instrument, char *str, int32_t volume)
+{
+    //  to be added in future
+}
+
+/* fulfill  SOUND_TRIGGER_USERSOUNDS */
+static void
+fmod_play_usersound(const char *filename, int32_t volume UNUSED, int32_t idx UNUSED)
+{
+    FMOD_System_CreateSound(systemvar, filename, FMOD_CREATESAMPLE, 0,
+                            &soundvar);
+    if (strstr(filename, "music_") != NULL) {
+        FMOD_Channel_Stop(channelMus);
+        FMOD_System_PlaySound(systemvar, soundvar, 0, 0, &channelMus);
+        FMOD_Channel_SetMode(channelMus, FMOD_LOOP_NORMAL);
+    } else {
+        FMOD_Channel_Stop(channel1);
+        FMOD_System_PlaySound(systemvar, soundvar, 0, 0, &channel1);
+    }
+}
+
+static void
+fmod_ambience(int32_t ambienceid, int32_t ambience_action,
+                int32_t hero_proximity)
+{
+    //  to be added in future
+}
+
+
+
+#endif /* SND_LIB_FMOD  */
+       /* end of fmod.c */

sys/windows/windmain.c

@@ -592,8 +592,9 @@ _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);*/
             windowtype = gc.chosen_windowtype;
     }
     choose_windows(windowtype);
-
-#if defined(SND_LIB_WINDSOUND)
+#if defined(SND_LIB_FMOD)
+    assign_soundlib(soundlib_fmod);
+#elif defined(SND_LIB_WINDSOUND)
     assign_soundlib(soundlib_windsound);
 #endif