From d6fbf9fbe775ea838e8e8d8d607b88562f1c695b Mon Sep 17 00:00:00 2001
From: Sergeanur <s.anureev@yandex.ua>
Date: Mon, 16 Aug 2021 10:02:29 +0300
Subject: [PATCH] PS2 audio reflections

---
 src/audio/AudioManager.cpp | 44 ++++++++++++++++++++++++++++++++++++++
 src/audio/AudioManager.h   | 19 ++++++++++++++++
 2 files changed, 63 insertions(+)

diff --git a/src/audio/AudioManager.cpp b/src/audio/AudioManager.cpp
index 92569f03..686b9206 100644
--- a/src/audio/AudioManager.cpp
+++ b/src/audio/AudioManager.cpp
@@ -755,6 +755,49 @@ cAudioManager::UpdateReflections()
 	CColPoint colpoint;
 	CEntity *ent;
 
+#if GTA_VERSION < GTAVC_PC_10
+	if (m_FrameCounter % 8 == 0) {
+		camPos = TheCamera.GetPosition();
+		m_avecReflectionsPos[0] = camPos;
+		m_avecReflectionsPos[0].y += 50.0f;
+		if (CWorld::ProcessLineOfSight(camPos, m_avecReflectionsPos[0], colpoint, ent, true, false, false, true, false, true, true))
+			m_afReflectionsDistances[0] = Distance(camPos, colpoint.point);
+		else
+			m_afReflectionsDistances[0] = 50.0f;
+	} else if ((m_FrameCounter + 1) % 8 == 0) {
+		camPos = TheCamera.GetPosition();
+		m_avecReflectionsPos[1] = camPos;
+		m_avecReflectionsPos[1].y -= 50.0f;
+		if (CWorld::ProcessLineOfSight(camPos, m_avecReflectionsPos[1], colpoint, ent, true, false, false, true, false, true, true))
+			m_afReflectionsDistances[1] = Distance(camPos, colpoint.point);
+		else
+			m_afReflectionsDistances[1] = 50.0f;
+	} else if ((m_FrameCounter + 2) % 8 == 0) {
+		camPos = TheCamera.GetPosition();
+		m_avecReflectionsPos[2] = camPos;
+		m_avecReflectionsPos[2].x -= 50.0f;
+		if (CWorld::ProcessLineOfSight(camPos, m_avecReflectionsPos[2], colpoint, ent, true, false, false, true, false, true, true))
+			m_afReflectionsDistances[2] = Distance(camPos, colpoint.point);
+		else
+			m_afReflectionsDistances[2] = 50.0f;
+	} else if ((m_FrameCounter + 3) % 8 == 0) {
+		camPos = TheCamera.GetPosition();
+		m_avecReflectionsPos[3] = camPos;
+		m_avecReflectionsPos[3].x += 50.0f;
+		if (CWorld::ProcessLineOfSight(camPos, m_avecReflectionsPos[3], colpoint, ent, true, false, false, true, false, true, true))
+			m_afReflectionsDistances[3] = Distance(camPos, colpoint.point);
+		else
+			m_afReflectionsDistances[3] = 50.0f;
+	} else if ((m_FrameCounter + 4) % 8 == 0) {
+		camPos = TheCamera.GetPosition();
+		m_avecReflectionsPos[4] = camPos;
+		m_avecReflectionsPos[4].z += 50.0f;
+		if (CWorld::ProcessVerticalLine(camPos, m_avecReflectionsPos[4].z, colpoint, ent, true, false, false, false, true, false, nil))
+			m_afReflectionsDistances[4] = colpoint.point.z - camPos.z;
+		else
+			m_afReflectionsDistances[4] = 50.0f;
+	}
+#else
 	if (m_FrameCounter % 8 == 0) {
 		camPos = TheCamera.GetPosition();
 		m_avecReflectionsPos[0] = camPos;
@@ -824,6 +867,7 @@ cAudioManager::UpdateReflections()
 		else
 			m_afReflectionsDistances[7] = 100.0f;
 	}
+#endif
 }
 
 void
diff --git a/src/audio/AudioManager.h b/src/audio/AudioManager.h
index 383644e0..c52eef8f 100644
--- a/src/audio/AudioManager.h
+++ b/src/audio/AudioManager.h
@@ -184,6 +184,24 @@ public:
 
 VALIDATE_SIZE(cVehicleParams, 0x1C);
 
+#if GTA_VERSION < GTAVC_PC_10
+enum {
+	/*
+	REFLECTION_YMAX = 0, top
+	REFLECTION_YMIN = 1, bottom
+	REFLECTION_XMIN = 2, left
+	REFLECTION_XMAX = 3, right
+	REFLECTION_ZMAX = 4,
+	*/
+
+	REFLECTION_TOP = 0,
+	REFLECTION_BOTTOM,
+	REFLECTION_LEFT,
+	REFLECTION_RIGHT,
+	REFLECTION_UP,
+	MAX_REFLECTIONS,
+};
+#else
 enum {
 	REFLECTION_NORTH = 0,
 	REFLECTION_SOUTH,
@@ -195,6 +213,7 @@ enum {
 	REFLECTION_CEIL_EAST,
 	MAX_REFLECTIONS,
 };
+#endif
 
 enum PLAY_STATUS { PLAY_STATUS_STOPPED = 0, PLAY_STATUS_PLAYING, PLAY_STATUS_FINISHED };
 enum LOADING_STATUS { LOADING_STATUS_NOT_LOADED = 0, LOADING_STATUS_LOADED, LOADING_STATUS_FAILED };