From 2f2123f9d33f3c754300579bdc97195aec6cc3d9 Mon Sep 17 00:00:00 2001
From: RD42 <42702181+dashr9230@users.noreply.github.com>
Date: Sun, 14 Apr 2024 21:34:17 +0800
Subject: [PATCH] [raknet] Implement `RakPeer::GetDecompressionRatio()`

---
 raknet/RakPeer.cpp        | 16 +++++++++++++---
 raknet/RakPeer.h          | 13 ++++++-------
 raknet/RakPeerInterface.h |  5 ++++-
 3 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/raknet/RakPeer.cpp b/raknet/RakPeer.cpp
index 0de29d8..56e8d47 100644
--- a/raknet/RakPeer.cpp
+++ b/raknet/RakPeer.cpp
@@ -8,7 +8,7 @@
 RakPeer::RakPeer()
 {
 	memset( frequencyTable, 0, sizeof( unsigned int ) * 256 );
-	rawBytesSent = compressedBytesSent = 0;
+	rawBytesSent = rawBytesReceived = compressedBytesSent = compressedBytesReceived = 0;
 	MTUSize = DEFAULT_MTU_SIZE;
 	trackFrequencyTable = false;
 	maximumIncomingConnections = 0;
@@ -506,9 +506,19 @@ float RakPeer::GetCompressionRatio( void ) const
 		return 0.0f;
 }
 
-void RakPeer::vftable_E4()
+// --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+// Returns:
+// The decompression ratio.  A high decompression ratio is good.  Decompression is for incoming data
+// --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+float RakPeer::GetDecompressionRatio( void ) const
 {
-	// TODO: RakPeer::vftable_E4() (saco W: 10038B90) (server W: 450670 L: 806E3C0) (bot W: 4045B0 L: 80758BE)
+	if ( rawBytesReceived > 0 )
+	{
+		return ( float ) compressedBytesReceived / ( float ) rawBytesReceived;
+	}
+
+	else
+		return 0.0f;
 }
 
 void RakPeer::vftable_E8()
diff --git a/raknet/RakPeer.h b/raknet/RakPeer.h
index cb6d71d..dac00cb 100644
--- a/raknet/RakPeer.h
+++ b/raknet/RakPeer.h
@@ -168,7 +168,10 @@ public:
 	/// \return The compression ratio
 	float GetCompressionRatio( void ) const;
 
-	void vftable_E4();
+	///Returns the decompression ratio.  A high decompression ratio is good.  Decompression is for incoming data
+	/// \return The decompression ratio
+	float GetDecompressionRatio( void ) const;
+
 	void vftable_E8();
 	void vftable_EC();
 	void vftable_F0();
@@ -208,13 +211,9 @@ protected:
 
 	char _gap7D1[8];
 
-	unsigned int rawBytesSent;
+	unsigned int rawBytesSent, rawBytesReceived, compressedBytesSent, compressedBytesReceived;
 
-	char _gap7DD[4];
-
-	unsigned int compressedBytesSent;
-
-	char _gap7E5[28];
+	char _gap7E9[24];
 
 	RPCMap rpcMap; // Can't use StrPtrHash because runtime insertions will screw up the indices
 	int MTUSize;
diff --git a/raknet/RakPeerInterface.h b/raknet/RakPeerInterface.h
index 85e0c77..b4eec32 100644
--- a/raknet/RakPeerInterface.h
+++ b/raknet/RakPeerInterface.h
@@ -164,7 +164,10 @@ public:
 	/// \return The compression ratio
 	virtual float GetCompressionRatio( void ) const=0;
 
-	virtual void vftable_E4()=0;
+	///Returns the decompression ratio.  A high decompression ratio is good.  Decompression is for incoming data
+	/// \return The decompression ratio
+	virtual float GetDecompressionRatio( void ) const=0;
+
 	virtual void vftable_E8()=0;
 	virtual void vftable_EC()=0;
 	virtual void vftable_F0()=0;