From a4112e4311eb226c4f43cb697aa7f6c34bd7b9a5 Mon Sep 17 00:00:00 2001
From: kdx <kikoodx@paranoici.org>
Date: Sun, 30 Apr 2023 16:37:46 +0200
Subject: music playing

---
 headers/TZR_globals.h   |  1 +
 headers/TZR_sound.h     |  5 +++++
 headers/TZR_types.h     |  1 +
 sources/TZR_PlayMusic.c | 19 +++++++++++++++++++
 sources/TZR_StopMusic.c | 14 ++++++++++++++
 sources/globals.c       |  1 +
 6 files changed, 41 insertions(+)
 create mode 100644 sources/TZR_PlayMusic.c
 create mode 100644 sources/TZR_StopMusic.c

diff --git a/headers/TZR_globals.h b/headers/TZR_globals.h
index 25919ad..cfedc43 100644
--- a/headers/TZR_globals.h
+++ b/headers/TZR_globals.h
@@ -23,3 +23,4 @@ extern TZR_KeyState ___tzr_mousestates[256];
 extern float ___tzr_scale;
 extern int ___tzr_off_x;
 extern int ___tzr_off_y;
+extern Mix_Music *___tzr_music;
diff --git a/headers/TZR_sound.h b/headers/TZR_sound.h
index b24823e..271995b 100644
--- a/headers/TZR_sound.h
+++ b/headers/TZR_sound.h
@@ -9,3 +9,8 @@
 #endif
 #endif
 int _TZR_PlaySound(const TZR_PlaySoundArgs *args);
+
+/* Return -1 on error. */
+int TZR_PlayMusic(const char *path, int loop);
+
+void TZR_StopMusic(void);
diff --git a/headers/TZR_types.h b/headers/TZR_types.h
index 972c45e..b9ec3eb 100644
--- a/headers/TZR_types.h
+++ b/headers/TZR_types.h
@@ -41,6 +41,7 @@ typedef struct TZR_Sound TZR_Sound;
 typedef struct TZR_Resource TZR_Resource;
 typedef enum TZR_EventType TZR_EventType;
 typedef struct TZR_Event TZR_Event;
+typedef struct TZR_Music TZR_Music;
 typedef struct TZR_DrawImageArgs TZR_DrawImageArgs;
 typedef struct TZR_DrawRectangleArgs TZR_DrawRectangleArgs;
 typedef struct TZR_PlaySoundArgs TZR_PlaySoundArgs;
diff --git a/sources/TZR_PlayMusic.c b/sources/TZR_PlayMusic.c
new file mode 100644
index 0000000..10725b6
--- /dev/null
+++ b/sources/TZR_PlayMusic.c
@@ -0,0 +1,19 @@
+#include "TZR_sound.h"
+#include "TZR_globals.h"
+#include "sdl_error.h"
+
+int
+TZR_PlayMusic(const char *path, int loop)
+{
+	if (!___tzr_config.mixer) {
+		fprintf(stderr, "mixer is disabled\n");
+		return -1;
+	}
+	TZR_StopMusic();
+	___tzr_music = Mix_LoadMUS(path);
+	if (___tzr_music == NULL)
+		return sdl_error(-1);
+	if (Mix_PlayMusic(___tzr_music, loop) < 0)
+		return sdl_error(-1);
+	return 0;
+}
diff --git a/sources/TZR_StopMusic.c b/sources/TZR_StopMusic.c
new file mode 100644
index 0000000..94eda2f
--- /dev/null
+++ b/sources/TZR_StopMusic.c
@@ -0,0 +1,14 @@
+#include "TZR_sound.h"
+#include "TZR_globals.h"
+
+void
+TZR_StopMusic(void)
+{
+	if (!___tzr_config.mixer)
+		return;
+	if (Mix_PlayingMusic())
+		Mix_HaltMusic();
+	if (___tzr_music != NULL)
+		Mix_FreeMusic(___tzr_music);
+	___tzr_music = NULL;
+}
diff --git a/sources/globals.c b/sources/globals.c
index c968caf..02f9181 100644
--- a/sources/globals.c
+++ b/sources/globals.c
@@ -23,3 +23,4 @@ TZR_KeyState ___tzr_mousestates[256] = {0}; //doc says than mouse button is u8
 float ___tzr_scale = 1.0;
 int ___tzr_off_x = 1.0;
 int ___tzr_off_y = 1.0;
+Mix_Music *___tzr_music = NULL;
-- 
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