Added support for multiple music tracks in FT mode.

Note that taba3 is not currently played as it needs multiball support.
Issue #129.

SpaceCadetPinball/TPinballTable.cpp

@@ -4,6 +4,7 @@
 
 #include "control.h"
 #include "loader.h"
+#include "midi.h"
 #include "pb.h"
 #include "pinball.h"
 #include "render.h"
@@ -448,6 +449,8 @@ int TPinballTable::Message(int code, float value)
 			auto time = loader::play_sound(SoundIndex1);
 			LightShowTimer = timer::set(time, this, LightShow_timeout);
 		}
+
+		midi::play_track(midi::track1);
 		break;
 	case 1018:
 		if (ReplayTimer)

SpaceCadetPinball/control.cpp

@@ -1,6 +1,7 @@
 #include "pch.h"
 #include "control.h"
 
+#include "midi.h"
 #include "pb.h"
 #include "pinball.h"
 #include "TBlocker.h"
@@ -967,6 +968,8 @@ void control::table_set_flag_lights()
 void control::table_set_multiball()
 {
 	info_text_box->Display(pinball::get_rc_string(16, 0), 2.0);
+	if (midi::get_active_track() != midi::track3)
+		midi::play_track(midi::track3);
 }
 
 void control::table_bump_ball_sink_lock()
@@ -2572,6 +2575,8 @@ void control::BallDrainControl(int code, TPinballComponent* caller)
 			{
 				lite200->Message(20, 0.0);
 				lite199->Message(20, 0.0);
+				if (midi::get_active_track() != midi::track1)
+					midi::play_track(midi::track1);
 			}
 			if (light_on(&control_lite200_tag))
 			{
@@ -3102,6 +3107,8 @@ void control::GameoverController(int code, TPinballComponent* caller)
 		flip1->Message(1022, 0.0);
 		flip2->Message(1022, 0.0);
 		mission_text_box->MessageField = 0;
+		if (midi::get_active_track() != midi::track1)
+			midi::play_track(midi::track1);
 		return;
 	}
 	if (code != 67)
@@ -4008,6 +4015,8 @@ void control::SelectMissionController(int code, TPinballComponent* caller)
 					int addedScore = SpecialAddScore(mission_select_scores[scoreId]);
 					snprintf(Buffer, sizeof Buffer, pinball::get_rc_string(77, 0), addedScore);
 					mission_text_box->Display(Buffer, 4.0);
+					if (midi::get_active_track() != midi::track2)
+						midi::play_track(midi::track2);
 				}
 				return;
 			}
@@ -4121,6 +4130,8 @@ void control::SelectMissionController(int code, TPinballComponent* caller)
 			return;
 		}
 	case 66:
+		if (midi::get_active_track() != midi::track1)
+			midi::play_track(midi::track1);
 		lite198->Message(20, 0.0);
 		outer_circle->Message(34, 0.0);
 		ramp_tgt_lights->Message(20, 0.0);
@@ -4408,6 +4419,8 @@ void control::WaitingDeploymentController(int code, TPinballComponent* caller)
 	case 66:
 		mission_text_box->Clear();
 		waiting_deployment_flag = 0;
+		if (midi::get_active_track() != midi::track1)
+			midi::play_track(midi::track1);
 		break;
 	case 67:
 		mission_text_box->Display(pinball::get_rc_string(50, 0), -1.0);

SpaceCadetPinball/midi.cpp

@@ -8,8 +8,8 @@
 
 std::vector<Mix_Music*> midi::LoadedTracks{};
 Mix_Music *midi::track1, *midi::track2, *midi::track3, *midi::active_track, *midi::NextTrack;
-bool midi::SetNextTrackFlag;
 int midi::Volume = MIX_MAX_VOLUME;
+bool midi::IsPlaying = false;
 
 constexpr uint32_t FOURCC(uint8_t a, uint8_t b, uint8_t c, uint8_t d)
 {
@@ -31,27 +31,41 @@ int ToVariableLen(uint32_t value, uint32_t& dst)
 	return count;
 }
 
-int midi::play_pb_theme()
+void midi::music_play()
 {
-	// Todo: add support for tracks 2 and 3
-	return play_track(track1);
+	if (!IsPlaying)
+	{
+		IsPlaying = true;
+		play_track(NextTrack);
+		NextTrack = nullptr;
+	}
 }
 
-int midi::music_stop()
+void midi::music_stop()
 {
-	if (active_track)
+	if (IsPlaying)
+	{
+		IsPlaying = false;
+		NextTrack = active_track;
+		StopPlayback();
+	}
+}
+
+void midi::StopPlayback()
+{
+	if (active_track != nullptr)
 	{
-		active_track = nullptr;
 		Mix_HaltMusic();
+		active_track = nullptr;
 	}
-
-	return true;
 }
 
 int midi::music_init(int volume)
 {
 	SetVolume(volume);
 	active_track = nullptr;
+	NextTrack = nullptr;
+	IsPlaying = false;
 
 	if (pb::FullTiltMode)
 	{
@@ -78,8 +92,7 @@ int midi::music_init(int volume)
 
 void midi::music_shutdown()
 {
-	if (active_track)
-		Mix_HaltMusic();
+	music_stop();
 
 	for (auto midi : LoadedTracks)
 	{
@@ -105,7 +118,7 @@ Mix_Music* midi::load_track(std::string fileName)
 		fileName.insert(0, "SOUND");
 	}
 
-	// FT has music in two formats, depending on version: MIDI in 16bit, MIDS in 32bit.
+	// FT has music in two formats, depending on game version: MIDI in 16bit, MIDS in 32bit.
 	// 3DPB music is MIDI only.
 	auto basePath = pinball::make_path_name(fileName);
 	for (int i = 0; i <= 1 && !audio; i++)
@@ -148,15 +161,14 @@ Mix_Music* midi::load_track(std::string fileName)
 
 bool midi::play_track(Mix_Music* midi)
 {
-	music_stop();
+	StopPlayback();
 	if (!midi)
 		return false;
 
-	if (SetNextTrackFlag)
+	if (!IsPlaying)
 	{
 		NextTrack = midi;
-		SetNextTrackFlag = false;
-		return true;
+		return false;
 	}
 
 	if (Mix_PlayMusic(midi, -1))

SpaceCadetPinball/midi.h

@@ -86,18 +86,27 @@ static_assert(sizeof(midi_track) == 8, "Wrong size of midi_track");
 class midi
 {
 public:
-	static int play_pb_theme();
-	static int music_stop();
+	static Mix_Music * track1, * track2, * track3;
+	static void music_play();
+	static void music_stop();
 	static int music_init(int volume);
 	static void music_shutdown();
 	static void SetVolume(int volume);
+	static bool play_track(Mix_Music* midi);
+	static Mix_Music* get_active_track()
+	{
+		if (active_track == nullptr)
+			return NextTrack;
+		else
+			return active_track;
+	}
 private:
 	static std::vector<Mix_Music*> LoadedTracks;
-	static Mix_Music *track1, *track2, *track3, *active_track, *NextTrack;
-	static bool SetNextTrackFlag;
+	static Mix_Music *active_track, *NextTrack;
 	static int Volume;
+	static bool IsPlaying;
 
+	static void StopPlayback();
 	static Mix_Music* load_track(std::string fileName);
-	static bool play_track(Mix_Music* midi);
 	static std::vector<uint8_t>* MdsToMidi(std::string file);
 };

SpaceCadetPinball/options.cpp

@@ -226,7 +226,7 @@ void options::toggle(Menu1 uIDCheckItem)
 		if (!Options.Music)
 			midi::music_stop();
 		else
-			midi::play_pb_theme();
+			midi::music_play();
 		return;
 	case Menu1::Show_Menu:
 		Options.ShowMenu = Options.ShowMenu == 0;

SpaceCadetPinball/pb.cpp

@@ -232,7 +232,7 @@ void pb::replay_level(bool demoMode)
 	demo_mode = demoMode;
 	mode_change(GameModes::InGame);
 	if (options::Options.Music)
-		midi::play_pb_theme();
+		midi::music_play();
 	MainTable->Message(1014, static_cast<float>(options::Options.Players));
 }
 
@@ -379,7 +379,7 @@ void pb::pause_continue()
 			pinball::InfoTextBox->Display(text, textTime);
 		}
 		if (options::Options.Music && !winmain::single_step)
-			midi::play_pb_theme();
+			midi::music_play();
 		Sound::Activate();
 	}
 }

SpaceCadetPinball/winmain.cpp

@@ -813,7 +813,7 @@ int winmain::event_handler(const SDL_Event* event)
 			activated = true;
 			Sound::Activate();
 			if (Options.Music && !single_step)
-				midi::play_pb_theme();
+				midi::music_play();
 			no_time_loss = true;
 			has_focus = true;
 			break;