Cleaned up positional sound.

* Implement stereo sound.

Original Space Cadet has mono sound.  To achieve stereo, the following
steps were accomplished:

- Add a game option to turn on/off stereo sound.  Default is on.

- TPinballComponent objects were extended with a method called
  get_coordinates() that returns a single 2D point, approximating the
  on-screen position of the object, re-mapped between 0 and 1 vertically
  and horizontally, {0, 0} being at the top-left.

    - For static objects like bumpers and lights, the coordinate refers
      to the geometric center of the corresponding graphic sprite, and
      is precalculated at initialization.

    - For ball objects, the coordinate refers to the geometric center of
      the ball, calculated during play when requested.

- Extend all calls to sound-playing methods so that they include a
  TPinballComponent* argument that refers to the sound source, e.g.
  where the sound comes from.  For instance, when a flipper is
  activated, its method call to emit a sound now includes a reference to
  the flipper object; when a ball goes under a SkillShotGate, its method
  call to emit a sound now includes a reference to the corresponding
  light; and so on.

  For some cases, like light rollovers, the sound source is taken from
  the ball that triggered the light rollover.

  For other cases, like holes, flags and targets, the sound source is
  taken from the object itself.

  For some special cases like ramp activation, sound source is
  taken from the nearest light position that makes sense.

  For all game-progress sounds, like mission completion sounds or ball
  drain sounds, the sound source is undefined (set to nullptr), and the
  Sound::PlaySound() method takes care of positioning them at a default
  location, where speakers on a pinball machine normally are.

- Make the Sound::PlaySound() method accept a new argument, a
  TPinballComponent reference, as described above.

  If the stereo option is turned on, the Sound::PlaySound() method calls
  the get_coordinates() method of the TPinballComponent reference to get
  the sound position.

  This project uses SDL_mixer and there is a function called
  Mix_SetPosition() that allows placing a sound in the stereo field, by
  giving it a distance and an angle.

  We arbitrarily place the player's ears at the bottom of the table; we
  set the ears' height to half a table's length.  Intensity of the
  stereo effect is directly related to this value; the farther the
  player's ears from the table, the narrowest the stereo picture gets,
  and vice-versa.

  From there we have all we need to calculate distance and angle; we do
  just that and position all the sounds.

* Copy-paste typo fix.

SpaceCadetPinball/Sound.cpp

@@ -1,5 +1,7 @@
+#include "options.h"
 #include "pch.h"
 #include "Sound.h"
+#include "maths.h"
 
 int Sound::num_channels;
 bool Sound::enabled_flag = false;
@@ -41,7 +43,7 @@ void Sound::Close()
 	Mix_Quit();
 }
 
-void Sound::PlaySound(Mix_Chunk* wavePtr, int time)
+void Sound::PlaySound(Mix_Chunk* wavePtr, int time, TPinballComponent *soundSource, const char* info)
 {
 	if (wavePtr && enabled_flag)
 	{
@@ -52,8 +54,91 @@ void Sound::PlaySound(Mix_Chunk* wavePtr, int time)
 		}
 
 		auto channel = Mix_PlayChannel(-1, wavePtr, 0);
-		if (channel != -1)
+		if (channel != -1) {
 			TimeStamps[channel] = time;
+			if (options::Options.SoundStereo) {
+				/* Think 3D sound positioning, where:
+				 *   - x goes from 0 to 1, left to right on the screen,
+				 *   - y goes from 0 to 1, top to bottom on the screen,
+				 *   - z goes from 0 to infinity, from table-level to the sky.
+				 *
+				 * We position the listener at the bottom center of the table,
+				 * at 0.5 height, so roughly a table half-length.  Coords of
+				 * the listener are thus {0.5, 1.0, 0.5}.
+				 *
+				 * We use basic trigonometry to calculate the angle and distance
+				 * from a sound source to the listener.
+				 *
+				 * Mix_SetPosition expects an angle in (Sint16)degrees, where
+				 * 0 degrees is in front, 90 degrees is to the right, and so on.
+				 * Mix_SetPosition expects a (Uint8)distance from 0 (near) to 255 (far).
+				 */
+
+				/* Get the sound source position. */
+				vector2 coordinates;
+				/* Some sounds are unpositioned; for that case the caller sends
+				 * a NULL pointer as a soundSource; in those cases we position
+				 * the sound at the center top of the table.
+				 */
+				if (!soundSource) {
+					coordinates.X = 0.5f;
+					coordinates.Y = 0.0f;
+				}
+				else {
+					coordinates = soundSource->get_coordinates();
+				};
+
+				/* Player position. */
+				auto pX = 0.5f;
+				auto pY = 1.0f;
+				auto pZ = 0.5f;
+
+				/* Calculate lengths of three sides of a triangle.
+				 * ptos (Player-to-sound):  distance from listener to the sound source,
+				 * ptom (player-to-middle): distance from listener to the sound source
+				 *                          when the latter is repositioned to the
+				 *                          X center,
+				 * stom (sound-to-middle):  distance from ptos to ptom.
+				 */
+				auto ptos = sqrt(((coordinates.X - pX) * (coordinates.X - pX)) + ((coordinates.Y - pY) * (coordinates.Y - pY)) + (pZ * pZ));
+				auto ptom = sqrt(((coordinates.Y - pY) * (coordinates.Y - pY)) + (pZ * pZ));
+				auto stom = fabs(coordinates.X - 0.5);
+
+				/* Calculate the angle using the law of cosines and acos().
+				 * That will return an angle in radians, e.g. in the [0,PI] range;
+				 * we remap to [0,180], and cast to an integer.
+				 */
+				Sint16 angle = (Sint16)(acos(((stom * stom) - (ptos * ptos) - (ptom * ptom)) / (-2.0f * ptos * ptom)) * 180.0f / IM_PI);
+
+				/* Because we are using distances to calculate the angle,
+				 * we now have no clue if the sound is to the right or the
+				 * left.  If the sound is to the right, the current value
+				 * is good, but to the left, we need substract it from 360.
+				 */
+				if (coordinates.X < 0.5) {
+					angle = (360 - angle);
+				}
+
+				/* Distance from listener to the ball (ptos) is roughly
+				 * in the [0.5,1.55] range; remap to 50-155 by multiplying
+				 * by 100 and cast to an integer. */
+				Uint8 distance = (Uint8)(100.0f * ptos);
+				Mix_SetPosition(channel, angle, distance);
+
+				/* Output position of each sound emitted so we can verify
+				 * the sanity of the implementation.
+				 */
+				/*
+				printf("X: %3.3f Y: %3.3f Angle: %3d Distance: %3d, Object: %s\n",
+					coordinates.X,
+					coordinates.Y,
+					angle,
+					distance,
+					info
+				);
+				*/
+			}
+		}
 	}
 }
 

SpaceCadetPinball/Sound.h

@@ -1,4 +1,5 @@
 #pragma once
+#include "TPinballComponent.h"
 
 
 class Sound
@@ -9,7 +10,7 @@ public:
 	static void Activate();
 	static void Deactivate();
 	static void Close();
-	static void PlaySound(Mix_Chunk* wavePtr, int time);
+	static void PlaySound(Mix_Chunk* wavePtr, int time, TPinballComponent *soundSource, const char* info);
 	static Mix_Chunk* LoadWaveFile(const std::string& lpName);
 	static void FreeSound(Mix_Chunk* wave);
 	static void SetChannels(int channels);

SpaceCadetPinball/TBall.cpp

@@ -135,3 +135,12 @@ void TBall::throw_ball(TBall* ball, vector3* direction, float angleMult, float s
 	rnd = RandFloat();
 	ball->Speed = (1.0f - (rnd + rnd)) * (speedMult1 * speedMult2) + speedMult1;
 }
+
+vector2 TBall::get_coordinates()
+{
+	vector2  coordinates;
+	vector2i pos2D = proj::xform_to_2d(Position);
+	coordinates.X = (float)pos2D.X / PinballTable->Width;
+	coordinates.Y = (float)pos2D.Y / PinballTable->Height;
+	return coordinates;
+}

SpaceCadetPinball/TBall.h

@@ -13,6 +13,7 @@ public :
 	void not_again(TEdgeSegment* edge);
 	bool already_hit(TEdgeSegment* edge);
 	int Message(int code, float value) override;
+	vector2 get_coordinates() override;
 
 	static void throw_ball(TBall* ball, vector3* direction, float angleMult, float speedMult1,
 	                       float speedMult2);

SpaceCadetPinball/TBlocker.cpp

@@ -40,11 +40,11 @@ int TBlocker::Message(int code, float value)
 		ActiveFlag = 0;
 		render::sprite_set_bitmap(RenderSprite, nullptr);
 		if (code == 51)
-			loader::play_sound(SoundIndex3);
+			loader::play_sound(SoundIndex3, this, "TBlocker1");
 		return 0;
 	case 52:
 		ActiveFlag = 1;
-		loader::play_sound(SoundIndex4);
+		loader::play_sound(SoundIndex4, this, "TBlocker2");
 		render::sprite_set_bitmap(RenderSprite, ListBitmap->at(0));
 		break;
 	case 59:

SpaceCadetPinball/TBumper.cpp

@@ -36,9 +36,9 @@ int TBumper::Message(int code, float value)
 			if (nextBmp != BmpIndex)
 			{
 				if (nextBmp >= BmpIndex)
-					loader::play_sound(SoundIndex4);
+					loader::play_sound(SoundIndex4, this, "TBumper1");
 				if (nextBmp < BmpIndex)
-					loader::play_sound(SoundIndex3);
+					loader::play_sound(SoundIndex3, this, "TBumper2");
 				BmpIndex = nextBmp;
 				Fire();
 				control::handler(11, this);

SpaceCadetPinball/TCollisionComponent.cpp

@@ -4,6 +4,7 @@
 #include "maths.h"
 #include "TEdgeSegment.h"
 #include "TPinballTable.h"
+#include "TBall.h"
 
 
 TCollisionComponent::TCollisionComponent(TPinballTable* table, int groupIndex, bool createWall) :
@@ -61,9 +62,9 @@ bool TCollisionComponent::DefaultCollision(TBall* ball, vector2* nextPosition, v
 
 	auto projSpeed = maths::basic_collision(ball, nextPosition, direction, Elasticity, Smoothness, Threshold, Boost);
 	if (projSpeed > Threshold)
-		loader::play_sound(HardHitSoundId);
+		loader::play_sound(HardHitSoundId, ball, "TCollisionComponent1");
 	else if (projSpeed > 0.2f)
-		loader::play_sound(SoftHitSoundId);
+		loader::play_sound(SoftHitSoundId, ball, "TCollisionComponent2");
 	else
 		return false;
 	return true;
@@ -87,9 +88,9 @@ void TCollisionComponent::Collision(TBall* ball, vector2* nextPosition, vector2*
 		Threshold,
 		Boost);
 	if (projSpeed > Threshold)
-		loader::play_sound(HardHitSoundId);
+		loader::play_sound(HardHitSoundId, ball, "TCollisionComponent3");
 	else if (projSpeed > 0.2f)
-		loader::play_sound(SoftHitSoundId);
+		loader::play_sound(SoftHitSoundId, ball, "TCollisionComponent4");
 }
 
 int TCollisionComponent::FieldEffect(TBall* ball, vector2* vecDst)

SpaceCadetPinball/TFlagSpinner.cpp

@@ -117,7 +117,7 @@ void TFlagSpinner::NextFrame()
 	{
 		control::handler(63, this);
 		if (SoftHitSoundId)
-			loader::play_sound(SoftHitSoundId);
+			loader::play_sound(SoftHitSoundId, this, "TFlagSpinner");
 		if (!BmpIndex)
 			control::handler(62, this);
 	}

SpaceCadetPinball/TFlipper.cpp

@@ -73,12 +73,12 @@ int TFlipper::Message(int code, float value)
 		{
 			control::handler(1, this);
 			TimerTime = ExtendAnimationFrameTime;
-			loader::play_sound(HardHitSoundId);
+			loader::play_sound(HardHitSoundId, this, "TFlipper1");
 		}
 		else if (code == 2)
 		{
 			TimerTime = RetractAnimationFrameTime;
-			loader::play_sound(SoftHitSoundId);
+			loader::play_sound(SoftHitSoundId, this, "TFlipper2");
 		}
 		else
 		{

SpaceCadetPinball/TGate.cpp

@@ -26,14 +26,14 @@ int TGate::Message(int code, float value)
 		{
 			ActiveFlag = 0;
 			render::sprite_set_bitmap(RenderSprite, nullptr);
-			loader::play_sound(SoundIndex3);
+			loader::play_sound(SoundIndex3, this, "TGate1");
 		}
 		else if (code == 54 || code == 1024)
 		{
 			ActiveFlag = 1;
 			render::sprite_set_bitmap(RenderSprite, ListBitmap->at(0));
 			if (code == 54)
-				loader::play_sound(SoundIndex4);
+				loader::play_sound(SoundIndex4, this, "TGate2");
 		}
 		control::handler(code, this);
 	}

SpaceCadetPinball/THole.cpp

@@ -87,7 +87,7 @@ void THole::Collision(TBall* ball, vector2* nextPosition, vector2* direction, fl
 
 		if (!PinballTable->TiltLockFlag)
 		{
-			loader::play_sound(HardHitSoundId);
+			loader::play_sound(HardHitSoundId, ball, "THole1");
 			control::handler(57, this);
 		}
 	}
@@ -115,7 +115,7 @@ int THole::FieldEffect(TBall* ball, vector2* vecDst)
 				ball->CollisionComp = nullptr;
 				ball->Direction.X = 0.0;
 				ball->Speed = 0.0;
-				loader::play_sound(SoftHitSoundId);
+				loader::play_sound(SoftHitSoundId, ball, "THole2");
 				control::handler(58, this);
 			}
 		}

SpaceCadetPinball/TKickback.cpp

@@ -62,7 +62,7 @@ void TKickback::TimerExpired(int timerId, void* caller)
 	{
 		kick->Threshold = 0.0;
 		kick->Timer = timer::set(kick->TimerTime2, kick, TimerExpired);
-		loader::play_sound(kick->HardHitSoundId);
+		loader::play_sound(kick->HardHitSoundId, kick, "TKickback");
 		if (kick->ListBitmap)
 		{
 			auto bmp = kick->ListBitmap->at(1);

SpaceCadetPinball/TKickout.cpp

@@ -122,7 +122,7 @@ void TKickout::Collision(TBall* ball, vector2* nextPosition, vector2* direction,
 		}
 		else
 		{
-			loader::play_sound(SoftHitSoundId);
+			loader::play_sound(SoftHitSoundId, ball, "TKickout1");
 			control::handler(63, this);
 		}
 	}
@@ -153,12 +153,12 @@ void TKickout::TimerExpired(int timerId, void* caller)
 		kick->Timer = timer::set(kick->TimerTime2, kick, ResetTimerExpired);
 		if (kick->Ball)
 		{		
+			loader::play_sound(kick->HardHitSoundId, kick->Ball, "TKickout2");
 			kick->Ball->Position.Z = kick->OriginalBallZ;
 			TBall::throw_ball(kick->Ball, &kick->BallThrowDirection, kick->ThrowAngleMult, kick->ThrowSpeedMult1,
 			                  kick->ThrowSpeedMult2);
 			kick->ActiveFlag = 0;
 			kick->Ball = nullptr;
-			loader::play_sound(kick->HardHitSoundId);
 		}
 	}
 }

SpaceCadetPinball/TLightRollover.cpp

@@ -53,7 +53,7 @@ void TLightRollover::Collision(TBall* ball, vector2* nextPosition, vector2* dire
 		}
 		else
 		{
-			loader::play_sound(SoftHitSoundId);
+			loader::play_sound(SoftHitSoundId, this, "TLightRollover");
 			control::handler(63, this);
 			RolloverFlag = RolloverFlag == 0;
 			if (ListBitmap)

SpaceCadetPinball/TOneway.cpp

@@ -51,7 +51,7 @@ void TOneway::Collision(TBall* ball, vector2* nextPosition, vector2* direction,
 		if (!PinballTable->TiltLockFlag)
 		{
 			if (HardHitSoundId)
-				loader::play_sound(HardHitSoundId);
+				loader::play_sound(HardHitSoundId, ball, "TOneway1");
 			control::handler(63, this);
 		}
 	}
@@ -69,7 +69,7 @@ void TOneway::Collision(TBall* ball, vector2* nextPosition, vector2* direction,
 		Boost) > 0.2f)
 	{
 		if (SoftHitSoundId)
-			loader::play_sound(SoftHitSoundId);
+			loader::play_sound(SoftHitSoundId, ball, "TOneway2");
 	}
 }
 

SpaceCadetPinball/TPinballComponent.cpp

@@ -17,6 +17,8 @@ TPinballComponent::TPinballComponent(TPinballTable* table, int groupIndex, bool
 	ListZMap = nullptr;
 	GroupName = nullptr;
 	Control = nullptr;
+	VisualPosNormX= -1.0f;
+	VisualPosNormY = -1.0f;
 	if (table)
 		table->ComponentList.push_back(this);
 	if (groupIndex >= 0)
@@ -69,6 +71,10 @@ TPinballComponent::TPinballComponent(TPinballTable* table, int groupIndex, bool
 				rootBmp->XPosition - table->XOffset,
 				rootBmp->YPosition - table->YOffset,
 				&bmp1Rect);
+
+			auto& rect = RenderSprite->BmpRect;
+			VisualPosNormX = (rect.XPosition + (rect.Width  / 2.0f)) / PinballTable->Width;
+			VisualPosNormY = (rect.YPosition + (rect.Height / 2.0f)) / PinballTable->Height;
 		}
 	}
 	GroupIndex = groupIndex;
@@ -111,3 +117,8 @@ int TPinballComponent::get_scoring(int index)
 {
 	return 0;
 }
+
+vector2 TPinballComponent::get_coordinates()
+{
+	return {VisualPosNormX, VisualPosNormY};
+}

SpaceCadetPinball/TPinballComponent.h

@@ -4,6 +4,7 @@ struct zmap_header_type;
 struct gdrv_bitmap8;
 struct render_sprite_type_struct;
 struct component_control;
+struct vector2;
 class TPinballTable;
 
 enum class message_code
@@ -23,6 +24,7 @@ public:
 	virtual void port_draw();
 	virtual void put_scoring(int index, int score);
 	virtual int get_scoring(int index);
+	virtual vector2 get_coordinates();
 
 	char UnusedBaseFlag;
 	char ActiveFlag;
@@ -34,4 +36,7 @@ public:
 	TPinballTable* PinballTable;
 	std::vector<gdrv_bitmap8*>* ListBitmap;
 	std::vector<zmap_header_type*>* ListZMap;
+private:
+	float VisualPosNormX;
+	float VisualPosNormY;
 };

SpaceCadetPinball/TPinballTable.cpp

@@ -292,7 +292,7 @@ void TPinballTable::tilt(float time)
 		pinball::InfoTextBox->Clear();
 		pinball::MissTextBox->Clear();
 		pinball::InfoTextBox->Display(pinball::get_rc_string(35, 0), -1.0);
-		loader::play_sound(SoundIndex3);
+		loader::play_sound(SoundIndex3, nullptr, "TPinballTable1");
 		TiltTimeoutTimer = timer::set(30.0, this, tilt_timeout);
 
 		for (auto component : ComponentList)
@@ -446,7 +446,7 @@ int TPinballTable::Message(int code, float value)
 			pinball::InfoTextBox->Clear();
 			pinball::MissTextBox->Clear();
 			LightGroup->Message(28, 0.2f);
-			auto time = loader::play_sound(SoundIndex1);
+			auto time = loader::play_sound(SoundIndex1, nullptr, "TPinballTable2");
 			LightShowTimer = timer::set(time, this, LightShow_timeout);
 		}
 
@@ -543,7 +543,7 @@ int TPinballTable::Message(int code, float value)
 		}
 		break;
 	case 1022:
-		loader::play_sound(SoundIndex2);
+		loader::play_sound(SoundIndex2, nullptr, "TPinballTable3");
 		pinball::MissTextBox->Clear();
 		pinball::InfoTextBox->Display(pinball::get_rc_string(34, 0), -1.0);
 		EndGameTimeoutTimer = timer::set(3.0, this, EndGame_timeout);

SpaceCadetPinball/TPlunger.cpp

@@ -50,7 +50,7 @@ int TPlunger::Message(int code, float value)
 		{
 			Boost = 0.0;
 			Threshold = 1000000000.0;
-			loader::play_sound(HardHitSoundId);
+			loader::play_sound(HardHitSoundId, this, "TPlunger1");
 			PullbackTimer(0, this);
 		}
 		return 0;
@@ -70,7 +70,7 @@ int TPlunger::Message(int code, float value)
 		if (BallFeedTimer_)
 			timer::kill(BallFeedTimer_);
 		BallFeedTimer_ = timer::set(0.95999998f, this, BallFeedTimer);
-		loader::play_sound(SoundIndexP1);
+		loader::play_sound(SoundIndexP1, this, "TPlunger2");
 		control::handler(code, this);
 		return 0;
 	case 1017:
@@ -95,7 +95,7 @@ int TPlunger::Message(int code, float value)
 				timer::kill(PullbackTimer_);
 			PullbackTimer_ = 0;
 			if (code == 1005)
-				loader::play_sound(SoundIndexP2);
+				loader::play_sound(SoundIndexP2, this, "TPlunger3");
 			auto bmp = ListBitmap->at(0);
 			auto zMap = ListZMap->at(0);
 			render::sprite_set(

SpaceCadetPinball/TPopupTarget.cpp

@@ -79,7 +79,7 @@ void TPopupTarget::Collision(TBall* ball, vector2* nextPosition, vector2* direct
 		this->Boost) > this->Threshold)
 	{
 		if (this->HardHitSoundId)
-			loader::play_sound(this->HardHitSoundId);
+			loader::play_sound(this->HardHitSoundId, this, "TPopupTarget1");
 		this->Message(49, 0.0);
 		control::handler(63, this);
 	}
@@ -94,6 +94,6 @@ void TPopupTarget::TimerExpired(int timerId, void* caller)
 	if (timerId)
 	{
 		if (target->SoftHitSoundId)
-			loader::play_sound(target->SoftHitSoundId);
+			loader::play_sound(target->SoftHitSoundId, target, "TPopupTarget2");
 	}
 }

SpaceCadetPinball/TRamp.cpp

@@ -164,7 +164,7 @@ void TRamp::Collision(TBall* ball, vector2* nextPosition, vector2* direction, fl
 	{
 		if (!PinballTable->TiltLockFlag)
 		{
-			loader::play_sound(SoftHitSoundId);
+			loader::play_sound(SoftHitSoundId, ball, "TRamp");
 			control::handler(63, this);
 		}
 	}

SpaceCadetPinball/TRollover.cpp

@@ -54,7 +54,7 @@ void TRollover::Collision(TBall* ball, vector2* nextPosition, vector2* direction
 		}
 		else
 		{
-			loader::play_sound(SoftHitSoundId);
+			loader::play_sound(SoftHitSoundId, ball, "TRollover");
 			control::handler(63, this);
 		}
 		RolloverFlag = RolloverFlag == 0;

SpaceCadetPinball/TSink.cpp

@@ -86,7 +86,7 @@ void TSink::Collision(TBall* ball, vector2* nextPosition, vector2* direction, fl
 	{
 		ball->ActiveFlag = 0;
 		render::sprite_set_bitmap(ball->RenderSprite, nullptr);
-		loader::play_sound(SoundIndex4);
+		loader::play_sound(SoundIndex4, ball, "TSink1");
 		control::handler(63, this);
 	}
 }
@@ -102,6 +102,6 @@ void TSink::TimerExpired(int timerId, void* caller)
 	TBall::throw_ball(ball, &sink->BallThrowDirection, sink->ThrowAngleMult, sink->ThrowSpeedMult1,
 	                  sink->ThrowSpeedMult2);
 	if (sink->SoundIndex3)
-		loader::play_sound(sink->SoundIndex3);
+		loader::play_sound(sink->SoundIndex3, ball, "TSink2");
 	sink->Timer = 0;
 }

SpaceCadetPinball/TSound.cpp

@@ -10,7 +10,7 @@ TSound::TSound(TPinballTable* table, int groupIndex) : TPinballComponent(table,
 	this->SoundIndex = visual.SoundIndex4;
 }
 
-float TSound::Play()
+float TSound::Play(TPinballComponent *soundSource, const char* info)
 {
-	return loader::play_sound(this->SoundIndex);
+	return loader::play_sound(this->SoundIndex, soundSource, info);
 }

SpaceCadetPinball/TSound.h

@@ -6,7 +6,7 @@ class TSound :
 {
 public:
 	TSound(TPinballTable* table, int groupIndex);
-	float Play();
+	float Play(TPinballComponent *soundSource, const char* info);
 
 	int SoundIndex;
 };

SpaceCadetPinball/TTripwire.cpp

@@ -19,7 +19,7 @@ void TTripwire::Collision(TBall* ball, vector2* nextPosition, vector2* direction
 	ball->not_again(edge);
 	if (!PinballTable->TiltLockFlag)
 	{
-		loader::play_sound(SoftHitSoundId);
+		loader::play_sound(SoftHitSoundId, ball, "TTripwire");
 		control::handler(63, this);
 	}
 }

SpaceCadetPinball/control.cpp

@@ -932,7 +932,7 @@ void control::pbctrl_bdoor_controller(char key)
 void control::table_add_extra_ball(float count)
 {
 	++TableG->ExtraBalls;
-	soundwave28->Play();
+	soundwave28->Play(nullptr, "table_add_extra_ball");
 	auto msg = pinball::get_rc_string(9, 0);
 	info_text_box->Display(msg, count);
 }
@@ -981,7 +981,7 @@ void control::table_bump_ball_sink_lock()
 	else
 	{
 		TableG->BallLockedCounter = TableG->BallLockedCounter + 1;
-		soundwave44->Play();
+		soundwave44->Play(nullptr, "table_bump_ball_sink_lock");
 		info_text_box->Display(pinball::get_rc_string(1, 0), 2.0);
 		TableG->Plunger->Message(1016, 0.0);
 	}
@@ -1004,7 +1004,7 @@ void control::cheat_bump_rank()
 		auto rankText = pinball::get_rc_string(RankRcArray[rank], 1);
 		snprintf(Buffer,sizeof Buffer, pinball::get_rc_string(83, 0), rankText);
 		mission_text_box->Display(Buffer, 8.0);
-		soundwave10->Play();
+		soundwave10->Play(nullptr, "cheat_bump_rank");
 	}
 }
 
@@ -1055,7 +1055,7 @@ int control::AddRankProgress(int rank)
 			auto rankText = pinball::get_rc_string(RankRcArray[midActiveCount], 1);
 			snprintf(Buffer, sizeof Buffer, pinball::get_rc_string(83, 0), rankText);
 			mission_text_box->Display(Buffer, 8.0);
-			soundwave10->Play();
+			soundwave10->Play(nullptr, "AddRankProgress");
 		}
 	}
 	else if (activeCount >= 3 * totalCount / 4)
@@ -1175,7 +1175,7 @@ void control::DeploymentChuteToEscapeChuteOneWayControl(int code, TPinballCompon
 		int count = skill_shot_lights->Message(37, 0.0);
 		if (count)
 		{
-			soundwave3->Play();
+			soundwave3->Play(nullptr, "DeploymentChuteToEscapeChuteOneWayControl");
 			int score = TableG->AddScore(caller->get_scoring(count - 1));
 			snprintf(Buffer, sizeof Buffer, pinball::get_rc_string(21, 0), score);
 			info_text_box->Display(Buffer, 2.0);
@@ -1267,7 +1267,7 @@ void control::LaunchRampControl(int code, TPinballComponent* caller)
 			TableG->AddScore(caller->get_scoring(0));
 			sound = soundwave30;
 		}
-		sound->Play();
+		sound->Play(lite198, "LaunchRampControl");
 	}
 }
 
@@ -1404,7 +1404,7 @@ void control::OutLaneRolloverControl(int code, TPinballComponent* caller)
 		}
 		else
 		{
-			soundwave26->Play();
+			soundwave26->Play(caller, "OutLaneRolloverControl");
 		}
 		if (roll4 == caller)
 		{
@@ -1483,12 +1483,12 @@ void control::BonusLaneRolloverControl(int code, TPinballComponent* caller)
 			snprintf(Buffer, sizeof Buffer, pinball::get_rc_string(3, 0), addedScore);
 			info_text_box->Display(Buffer, 2.0);
 			lite16->Message(20, 0.0);
-			soundwave50_1->Play();
+			soundwave50_1->Play(caller, "BonusLaneRolloverControl1");
 		}
 		else
 		{
 			TableG->AddScore(caller->get_scoring(0));
-			soundwave25->Play();
+			soundwave25->Play(caller, "BonusLaneRolloverControl2");
 			info_text_box->Display(pinball::get_rc_string(44, 0), 2.0);
 		}
 		fuel_bargraph->Message(45, 11.0);
@@ -1756,7 +1756,7 @@ void control::BoosterTargetControl(int code, TPinballComponent* caller)
 			}
 		}
 		if (sound)
-			sound->Play();
+			sound->Play(caller, "BoosterTargetControl");
 
 		target1->MessageField = 0;
 		target1->Message(50, 0.0);
@@ -1844,12 +1844,12 @@ void control::FuelSpotTargetControl(int code, TPinballComponent* caller)
 		{
 			top_circle_tgt_lights->Message(16, 2.0);
 			fuel_bargraph->Message(45, 11.0);
-			soundwave25->Play();
+			soundwave25->Play(caller, "FuelSpotTargetControl1");
 			info_text_box->Display(pinball::get_rc_string(44, 0), 2.0);
 		}
 		else
 		{
-			soundwave49D->Play();
+			soundwave49D->Play(caller, "FuelSpotTargetControl2");
 		}
 	}
 }
@@ -1883,7 +1883,7 @@ void control::MissionSpotTargetControl(int code, TPinballComponent* caller)
 		}
 		else
 			sound = soundwave49D;
-		sound->Play();
+		sound->Play(caller, "MissionSpotTargetControl");
 		TableG->AddScore(caller->get_scoring(0));
 		if (ramp_tgt_lights->Message(37, 0.0) == 3)
 			ramp_tgt_lights->Message(16, 2.0);
@@ -1915,13 +1915,13 @@ void control::LeftHazardSpotTargetControl(int code, TPinballComponent* caller)
 		TableG->AddScore(caller->get_scoring(0));
 		if (lchute_tgt_lights->Message(37, 0.0) == 3)
 		{
-			soundwave14_1->Play();
+			soundwave14_1->Play(caller, "LeftHazardSpotTargetControl1");
 			gate1->Message(53, 0.0);
 			lchute_tgt_lights->Message(16, 2.0);
 		}
 		else
 		{
-			soundwave49D->Play();
+			soundwave49D->Play(caller, "LeftHazardSpotTargetControl2");
 		}
 	}
 }
@@ -1951,13 +1951,13 @@ void control::RightHazardSpotTargetControl(int code, TPinballComponent* caller)
 		TableG->AddScore(caller->get_scoring(0));
 		if (bpr_solotgt_lights->Message(37, 0.0) == 3)
 		{
-			soundwave14_1->Play();
+			soundwave14_1->Play(caller, "RightHazardSpotTargetControl1");
 			gate2->Message(53, 0.0);
 			bpr_solotgt_lights->Message(16, 2.0);
 		}
 		else
 		{
-			soundwave49D->Play();
+			soundwave49D->Play(caller, "RightHazardSpotTargetControl2");
 		}
 	}
 }
@@ -2015,7 +2015,7 @@ void control::GravityWellKickoutControl(int code, TPinballComponent* caller)
 			info_text_box->Display(Buffer, 2.0);
 			lite62->Message(20, 0.0);
 			caller->ActiveFlag = 0;
-			auto duration = soundwave7->Play();
+			auto duration = soundwave7->Play(lite62, "GravityWellKickoutControl");
 			caller->Message(55, duration);
 			break;
 		}
@@ -2054,7 +2054,7 @@ void control::SkillShotGate1Control(int code, TPinballComponent* caller)
 			lite54->Message(7, 5.0);
 			lite25->Message(7, 5.0);
 			fuel_bargraph->Message(45, 11.0);
-			soundwave14_2->Play();
+			soundwave14_2->Play(lite67, "SkillShotGate1Control");
 		}
 	}
 }
@@ -2066,7 +2066,7 @@ void control::SkillShotGate2Control(int code, TPinballComponent* caller)
 		if (light_on(&control_lite67_tag))
 		{
 			lite68->Message(19, 0.0);
-			soundwave14_2->Play();
+			soundwave14_2->Play(lite68, "SkillShotGate2Control");
 		}
 	}
 }
@@ -2078,7 +2078,7 @@ void control::SkillShotGate3Control(int code, TPinballComponent* caller)
 		if (light_on(&control_lite67_tag))
 		{
 			lite69->Message(19, 0.0);
-			soundwave14_2->Play();
+			soundwave14_2->Play(lite69, "SkillShotGate3Control");
 		}
 	}
 }
@@ -2090,7 +2090,7 @@ void control::SkillShotGate4Control(int code, TPinballComponent* caller)
 		if (light_on(&control_lite67_tag))
 		{
 			lite131->Message(19, 0.0);
-			soundwave14_2->Play();
+			soundwave14_2->Play(lite131, "SkillShotGate4Control");
 		}
 	}
 }
@@ -2102,7 +2102,7 @@ void control::SkillShotGate5Control(int code, TPinballComponent* caller)
 		if (light_on(&control_lite67_tag))
 		{
 			lite132->Message(19, 0.0);
-			soundwave14_2->Play();
+			soundwave14_2->Play(lite132, "SkillShotGate5Control");
 		}
 	}
 }
@@ -2114,7 +2114,7 @@ void control::SkillShotGate6Control(int code, TPinballComponent* caller)
 		if (light_on(&control_lite67_tag))
 		{
 			lite133->Message(19, 0.0);
-			soundwave14_2->Play();
+			soundwave14_2->Play(lite133, "SkillShotGate6Control");
 		}
 	}
 }
@@ -2384,9 +2384,9 @@ void control::HyperspaceKickOutControl(int code, TPinballComponent* caller)
 		{
 			if (someFlag < 1 || someFlag > 3)
 			{
-				auto duration = soundwave41->Play();
+				auto duration = soundwave41->Play(lite24, "HyperspaceKickOutControl1");
-				soundwave36_1->Play();
+				soundwave36_1->Play(lite24, "HyperspaceKickOutControl2");
-				soundwave50_2->Play();
+				soundwave50_2->Play(lite24, "HyperspaceKickOutControl3");
 				lite25->Message(7, 5.0);
 				caller->Message(55, duration);
 				return;
@@ -2415,7 +2415,7 @@ void control::HyperspaceKickOutControl(int code, TPinballComponent* caller)
 			break;
 		}
 	}
-	auto duration = sound->Play();
+	auto duration = sound->Play(lite24, "HyperspaceKickOutControl4");
 	lite25->Message(7, 5.0);
 	caller->Message(55, duration);
 }
@@ -2550,7 +2550,7 @@ void control::BallDrainControl(int code, TPinballComponent* caller)
 			TableG->Message(1022, 0.0);
 			if (pb::chk_highscore())
 			{
-				soundwave3->Play();
+				soundwave3->Play(nullptr, "BallDrainControl1");
 				TableG->LightGroup->Message(16, 3.0);
 				char* v11 = pinball::get_rc_string(177, 0);
 				mission_text_box->Display(v11, -1.0);
@@ -2578,23 +2578,23 @@ void control::BallDrainControl(int code, TPinballComponent* caller)
 			}
 			if (light_on(&control_lite200_tag))
 			{
-				soundwave27->Play();
+				soundwave27->Play(nullptr, "BallDrainControl2");
 				lite200->Message(19, 0.0);
 				info_text_box->Display(pinball::get_rc_string(96, 0), -1.0);
-				soundwave59->Play();
+				soundwave59->Play(nullptr, "BallDrainControl3");
 			}
 			else if (light_on(&control_lite199_tag))
 			{
-				soundwave27->Play();
+				soundwave27->Play(nullptr, "BallDrainControl4");
 				lite199->Message(20, 0.0);
 				lite200->Message(19, 0.0);
 				info_text_box->Display(pinball::get_rc_string(95, 0), 2.0);
-				soundwave59->Play();
+				soundwave59->Play(nullptr, "BallDrainControl5");
 				--TableG->UnknownP78;
 			}
 			else if (TableG->UnknownP75)
 			{
-				soundwave27->Play();
+				soundwave27->Play(nullptr, "BallDrainControl6");
 				--TableG->UnknownP75;
 			}
 			else
@@ -2610,7 +2610,7 @@ void control::BallDrainControl(int code, TPinballComponent* caller)
 					TableG->ExtraBalls--;
 
 					char* shootAgainText;
-					soundwave59->Play();
+					soundwave59->Play(nullptr, "BallDrainControl7");
 					switch (TableG->CurrentPlayer)
 					{
 					case 0:
@@ -2641,7 +2641,7 @@ void control::BallDrainControl(int code, TPinballComponent* caller)
 					{
 						lite199->MessageField = 1;
 					}
-					soundwave27->Play();
+					soundwave27->Play(nullptr, "BallDrainControl8");
 				}
 				bmpr_inc_lights->Message(20, 0.0);
 				ramp_bmpr_inc_lights->Message(20, 0.0);
@@ -2812,7 +2812,7 @@ void control::AlienMenacePartTwoController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(7))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "AlienMenacePartTwoController");
 			}
 		}
 	}
@@ -2844,7 +2844,7 @@ void control::BlackHoleThreatController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(8))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "BlackHoleThreatController");
 			}
 		}
 	}
@@ -2969,7 +2969,7 @@ void control::BugHuntController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(7))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "BugHuntController");
 			}
 		}
 	}
@@ -3044,7 +3044,7 @@ void control::CosmicPlaguePartTwoController(int code, TPinballComponent* caller)
 		if (!AddRankProgress(11))
 		{
 			mission_text_box->Display(Buffer, 8.0);
-			soundwave9->Play();
+			soundwave9->Play(nullptr, "CosmicPlaguePartTwoController");
 		}
 	}
 }
@@ -3088,7 +3088,7 @@ void control::DoomsdayMachineController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(9))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "DoomsdayMachineController");
 			}
 		}
 	}
@@ -3229,7 +3229,7 @@ void control::LaunchTrainingController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(6))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "LaunchTrainingController");
 			}
 		}
 	}
@@ -3312,7 +3312,7 @@ void control::MaelstromPartEightController(int code, TPinballComponent* caller)
 		if (!AddRankProgress(18))
 		{
 			mission_text_box->Display(Buffer, 8.0);
-			soundwave9->Play();
+			soundwave9->Play(nullptr, "MaelstromPartEightController");
 		}
 	}
 }
@@ -3573,7 +3573,7 @@ void control::PracticeMissionController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(6))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "PracticeMissionController");
 			}
 		}
 	}
@@ -3636,7 +3636,7 @@ void control::ReconnaissanceController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(9))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "ReconnaissanceController");
 			}
 		}
 	}
@@ -3687,7 +3687,7 @@ void control::ReentryTrainingController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(6))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "ReentryTrainingController");
 			}
 		}
 	}
@@ -3728,7 +3728,7 @@ void control::RescueMissionController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(7))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "RescueMissionController");
 			}
 			break;
 		}
@@ -3801,7 +3801,7 @@ void control::SatelliteController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(9))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "SatelliteController");
 			}
 		}
 	}
@@ -3874,7 +3874,7 @@ void control::ScienceMissionController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(9))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "ScienceMissionController");
 			}
 		}
 	}
@@ -3911,7 +3911,7 @@ void control::SecretMissionGreenController(int code, TPinballComponent* caller)
 		if (!AddRankProgress(10))
 		{
 			mission_text_box->Display(Buffer, 8.0);
-			soundwave9->Play();
+			soundwave9->Play(nullptr, "SecretMissionGreenController");
 		}
 	}
 }
@@ -4219,7 +4219,7 @@ void control::SpaceRadiationController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(8))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "SpaceRadiationController");
 			}
 		}
 	}
@@ -4272,7 +4272,7 @@ void control::StrayCometController(int code, TPinballComponent* caller)
 			if (!AddRankProgress(8))
 			{
 				mission_text_box->Display(Buffer, 8.0);
-				soundwave9->Play();
+				soundwave9->Play(nullptr, "StrayCometController");
 			}
 		}
 	}
@@ -4381,7 +4381,7 @@ void control::TimeWarpPartTwoController(int code, TPinballComponent* caller)
 		if (!AddRankProgress(12))
 		{
 			mission_text_box->Display(Buffer, 8.0);
-			soundwave10->Play();
+			soundwave10->Play(nullptr, "TimeWarpPartTwoController");
 		}
 	}
 	SpecialAddScore(2000000);

SpaceCadetPinball/loader.cpp

@@ -1,6 +1,7 @@
 #include "pch.h"
 #include "loader.h"
 #include "GroupData.h"
+#include "TPinballComponent.h"
 #include "pb.h"
 #include "pinball.h"
 #include "Sound.h"
@@ -326,12 +327,11 @@ int loader::material(int groupIndex, visualStruct* visual)
 	return 0;
 }
 
-
+float loader::play_sound(int soundIndex, TPinballComponent *soundSource, const char *info)
-float loader::play_sound(int soundIndex)
 {
 	if (soundIndex <= 0)
 		return 0.0;
-	Sound::PlaySound(sound_list[soundIndex].WavePtr, pb::time_ticks);
+	Sound::PlaySound(sound_list[soundIndex].WavePtr, pb::time_ticks, soundSource, info);
 	return sound_list[soundIndex].Duration;
 }
 

SpaceCadetPinball/loader.h

@@ -2,6 +2,7 @@
 #include "gdrv.h"
 #include "maths.h"
 #include "zdrv.h"
+#include "TPinballComponent.h"
 
 
 class DatFile;
@@ -99,7 +100,7 @@ public:
 	static float* query_float_attribute(int groupIndex, int groupIndexOffset, int firstValue);
 	static float query_float_attribute(int groupIndex, int groupIndexOffset, int firstValue, float defVal);
 	static int16_t* query_iattribute(int groupIndex, int firstValue, int* arraySize);
-	static float play_sound(int soundIndex);
+	static float play_sound(int soundIndex, TPinballComponent *soundSource, const char* info);
 	static DatFile* loader_table;
 private:
 	static errorMsg loader_errors[];

SpaceCadetPinball/options.cpp

@@ -102,6 +102,7 @@ void options::InitPrimary()
 	Options.HybridSleep = get_int("HybridSleep", false);
 	Options.Prefer3DPBGameData = get_int("Prefer 3DPB Game Data", false);
 	Options.IntegerScaling = get_int("Integer Scaling", false);
+	Options.SoundStereo = get_int("Stereo Sound Effects", false);
 	Options.SoundVolume = Clamp(get_int("Sound Volume", DefVolume), MinVolume, MaxVolume);
 	Options.MusicVolume = Clamp(get_int("Music Volume", DefVolume), MinVolume, MaxVolume);
 	Options.DebugOverlay = get_int("Debug Overlay", false);
@@ -147,6 +148,7 @@ void options::uninit()
 	set_int("HybridSleep", Options.HybridSleep);
 	set_int("Prefer 3DPB Game Data", Options.Prefer3DPBGameData);
 	set_int("Integer Scaling", Options.IntegerScaling);
+	set_int("Stereo Sound Effects", Options.SoundStereo);
 	set_int("Sound Volume", Options.SoundVolume);
 	set_int("Music Volume", Options.MusicVolume);
 	set_int("Debug Overlay", Options.DebugOverlay);
@@ -221,6 +223,9 @@ void options::toggle(Menu1 uIDCheckItem)
 		Options.Sounds ^= true;
 		Sound::Enable(Options.Sounds);
 		return;
+	case Menu1::SoundStereo:
+		Options.SoundStereo ^= true;
+		return;
 	case Menu1::Music:
 		Options.Music ^= true;
 		if (!Options.Music)

SpaceCadetPinball/options.h

@@ -8,6 +8,7 @@ enum class Menu1:int
 	Exit = 105,
 	Sounds = 201,
 	Music = 202,
+	SoundStereo = 203,
 	Help_Topics = 301,
 	Launch_Ball = 401,
 	Pause_Resume_Game = 402,
@@ -80,6 +81,7 @@ struct optionsStruct
 	bool IntegerScaling;
 	int SoundVolume;
 	int MusicVolume;
+	bool SoundStereo;
 	bool DebugOverlay;
 	bool DebugOverlayGrid;
 	bool DebugOverlayAllEdges;

SpaceCadetPinball/winmain.cpp

@@ -454,6 +454,10 @@ void winmain::RenderUi()
 				{
 					options::toggle(Menu1::Sounds);
 				}
+				if (ImGui::MenuItem("Stereo Sound Effects", nullptr, Options.SoundStereo))
+				{
+					options::toggle(Menu1::SoundStereo);
+				}
 				ImGui::TextUnformatted("Sound Volume");
 				if (ImGui::SliderInt("##Sound Volume", &Options.SoundVolume, options::MinVolume, options::MaxVolume, "%d",
 					ImGuiSliderFlags_AlwaysClamp))