From 1abd6941074b9f0ca74c8f0f5ef11b04291b0902 Mon Sep 17 00:00:00 2001
From: Filip Gawin <filip.gawin@zoho.com>
Date: Sun, 30 Jun 2019 22:44:43 +0200
Subject: DestroyEntity

---
 src/audio/AudioManager.cpp | 19 +++++++++++++++++++
 src/audio/AudioManager.h   |  1 +
 2 files changed, 20 insertions(+)

diff --git a/src/audio/AudioManager.cpp b/src/audio/AudioManager.cpp
index e82c2302..0a87d0e9 100644
--- a/src/audio/AudioManager.cpp
+++ b/src/audio/AudioManager.cpp
@@ -9,6 +9,24 @@
 
 cAudioManager &AudioManager = *(cAudioManager *)0x880FC0;
 
+void
+cAudioManager::DestroyEntity(int32 id)
+{
+	if(m_bIsInitialised && id >= 0 && id < 200 && m_asAudioEntities[id].m_bIsUsed) {
+		m_asAudioEntities[id].m_bIsUsed = 0;
+		for(i = 0; i < m_nAudioEntitiesTotal; ++i) {
+			if(id == m_anAudioEntityIndices[i]) {
+				if(i < 199)
+					memmove(&m_anAudioEntityIndices[i],
+					        &m_anAudioEntityIndices[i + 1],
+					        4 * (m_nAudioEntitiesTotal - (i + 1)));
+				m_anAudioEntityIndices[--m_nAudioEntitiesTotal] = 200;
+				return;
+			}
+		}
+	}
+}
+
 void
 cAudioManager::PostTerminateGameSpecificShutdown()
 {
@@ -2705,6 +2723,7 @@ cAudioManager::Service()
 }
 
 STARTPATCHES
+InjectHook(0x57A400, &cAudioManager::DestroyEntity, PATCH_JUMP);
 InjectHook(0x569640, &cAudioManager::PostTerminateGameSpecificShutdown, PATCH_JUMP);
 InjectHook(0x57AA00, &cAudioManager::SetDynamicAcousticModelingStatus, PATCH_JUMP);
 InjectHook(0x57AA50, &cAudioManager::IsAudioInitialised, PATCH_JUMP);
diff --git a/src/audio/AudioManager.h b/src/audio/AudioManager.h
index faae3305..f270ada6 100644
--- a/src/audio/AudioManager.h
+++ b/src/audio/AudioManager.h
@@ -216,6 +216,7 @@ public:
 	char field_19195;
 	int m_nTimeOfRecentCrime;
 
+	void DestroyEntity(int32 id);
 	void PostTerminateGameSpecificShutdown();
 	bool IsAudioInitialised() const;
 	void SetDynamicAcousticModelingStatus(bool status);
-- 
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