diff --git a/extensions/dhooks/dynhooks_sourcepawn.cpp b/extensions/dhooks/dynhooks_sourcepawn.cpp
index 927f3d66c8..6ad744d163 100644
--- a/extensions/dhooks/dynhooks_sourcepawn.cpp
+++ b/extensions/dhooks/dynhooks_sourcepawn.cpp
@@ -532,6 +532,7 @@ CDynamicHooksSourcePawn::CDynamicHooksSourcePawn(HookSetup *setup, CHook *pDetou
 	this->hookType = setup->hookType;
 	this->m_pDetour = pDetour;
 	this->callConv = setup->callConv;
+	this->thisFuncCallConv = setup->callConv;
 }
 
 HookReturnStruct *CDynamicHooksSourcePawn::GetReturnStruct()
diff --git a/extensions/dhooks/natives.cpp b/extensions/dhooks/natives.cpp
index f228fcf306..20237fa0e6 100644
--- a/extensions/dhooks/natives.cpp
+++ b/extensions/dhooks/natives.cpp
@@ -1096,20 +1096,39 @@ cell_t Native_GetParamObjectPtrVar(IPluginContext *pContext, const cell_t *param
 		return 0;
 	}
 
-	if(params[2] <= 0 || params[2] > (int)paramStruct->dg->params.size())
+	void *addr = NULL;
+
+	if(params[2] != 0)
 	{
-		return pContext->ThrowNativeError("Invalid param number %i max params is %i", params[2], paramStruct->dg->params.size());
-	}
+		if(params[2] < 0 || params[2] > (int)paramStruct->dg->params.size())
+		{
+			return pContext->ThrowNativeError("Invalid param number %i max params is %i", params[2], paramStruct->dg->params.size());
+		}
 
-	int index = params[2] - 1;
+		int index = params[2] - 1;
 
-	if(paramStruct->dg->params.at(index).type != HookParamType_ObjectPtr && paramStruct->dg->params.at(index).type != HookParamType_Object)
-	{
-		return pContext->ThrowNativeError("Invalid object value type %i", paramStruct->dg->params.at(index).type);
+		if(paramStruct->dg->params.at(index).type != HookParamType_ObjectPtr && paramStruct->dg->params.at(index).type != HookParamType_Object)
+		{
+			return pContext->ThrowNativeError("Invalid object value type %i", paramStruct->dg->params.at(index).type);
+		}
+
+		size_t offset = GetParamOffset(paramStruct, index);
+		addr = GetObjectAddr(paramStruct->dg->params.at(index).type, paramStruct->dg->params.at(index).flags, paramStruct->orgParams, offset);
 	}
+	else
+	{
+		if(paramStruct->dg->thisFuncCallConv != CallConv_THISCALL)
+		{
+			return pContext->ThrowNativeError("Parameter 'this' is only available in member functions, specify the calling convention type 'thiscall'");
+		}
+		
+		if(paramStruct->dg->thisType != ThisPointer_Address && paramStruct->dg->thisType != ThisPointer_CBaseEntity && !(paramStruct->dg->thisType == ThisPointer_Ignore && paramStruct->dg->hookType == HookType_GameRules))
+		{
+			return pContext->ThrowNativeError("Parameter 'this' is not specified as an address, it is not available");
+		}
 
-	size_t offset = GetParamOffset(paramStruct, index);
-	void *addr = GetObjectAddr(paramStruct->dg->params.at(index).type, paramStruct->dg->params.at(index).flags, paramStruct->orgParams, offset);
+		addr = g_SHPtr->GetIfacePtr();
+	}
 
 	switch((ObjectValueType)params[4])
 	{
@@ -1167,20 +1186,39 @@ cell_t Native_SetParamObjectPtrVar(IPluginContext *pContext, const cell_t *param
 		return 0;
 	}
 
-	if(params[2] <= 0 || params[2] > (int)paramStruct->dg->params.size())
+	void *addr = NULL;
+
+	if(params[2] != 0)
 	{
-		return pContext->ThrowNativeError("Invalid param number %i max params is %i", params[2], paramStruct->dg->params.size());
-	}
+		if(params[2] < 0 || params[2] > (int)paramStruct->dg->params.size())
+		{
+			return pContext->ThrowNativeError("Invalid param number %i max params is %i", params[2], paramStruct->dg->params.size());
+		}
 
-	int index = params[2] - 1;
+		int index = params[2] - 1;
 
-	if(paramStruct->dg->params.at(index).type != HookParamType_ObjectPtr && paramStruct->dg->params.at(index).type != HookParamType_Object)
+		if(paramStruct->dg->params.at(index).type != HookParamType_ObjectPtr && paramStruct->dg->params.at(index).type != HookParamType_Object)
+		{
+			return pContext->ThrowNativeError("Invalid object value type %i", paramStruct->dg->params.at(index).type);
+		}
+
+		size_t offset = GetParamOffset(paramStruct, index);
+		addr = GetObjectAddr(paramStruct->dg->params.at(index).type, paramStruct->dg->params.at(index).flags, paramStruct->orgParams, offset);
+	}
+	else
 	{
-		return pContext->ThrowNativeError("Invalid object value type %i", paramStruct->dg->params.at(index).type);
+		if(paramStruct->dg->thisFuncCallConv != CallConv_THISCALL)
+		{
+			return pContext->ThrowNativeError("Parameter 'this' is only available in member functions, specify the calling convention type 'thiscall'");
+		}
+
+		if(paramStruct->dg->thisType != ThisPointer_Address && paramStruct->dg->thisType != ThisPointer_CBaseEntity && !(paramStruct->dg->thisType == ThisPointer_Ignore && paramStruct->dg->hookType == HookType_GameRules))
+		{
+			return pContext->ThrowNativeError("Parameter 'this' is not specified as an address, it is not available");
+		}
+
+		addr = g_SHPtr->GetIfacePtr();
 	}
-	
-	size_t offset = GetParamOffset(paramStruct, index);
-	void *addr = GetObjectAddr(paramStruct->dg->params.at(index).type, paramStruct->dg->params.at(index).flags, paramStruct->orgParams, offset);
 
 	switch((ObjectValueType)params[4])
 	{
@@ -1252,20 +1290,39 @@ cell_t Native_GetParamObjectPtrVarVector(IPluginContext *pContext, const cell_t
 		return 0;
 	}
 
-	if(params[2] <= 0 || params[2] > (int)paramStruct->dg->params.size())
+	void *addr = NULL;
+
+	if(params[2] != 0)
 	{
-		return pContext->ThrowNativeError("Invalid param number %i max params is %i", params[2], paramStruct->dg->params.size());
-	}
+		if(params[2] < 0 || params[2] > (int)paramStruct->dg->params.size())
+		{
+			return pContext->ThrowNativeError("Invalid param number %i max params is %i", params[2], paramStruct->dg->params.size());
+		}
 
-	int index = params[2] - 1;
+		int index = params[2] - 1;
 
-	if(paramStruct->dg->params.at(index).type != HookParamType_ObjectPtr && paramStruct->dg->params.at(index).type != HookParamType_Object)
-	{
-		return pContext->ThrowNativeError("Invalid object value type %i", paramStruct->dg->params.at(index).type);
+		if(paramStruct->dg->params.at(index).type != HookParamType_ObjectPtr && paramStruct->dg->params.at(index).type != HookParamType_Object)
+		{
+			return pContext->ThrowNativeError("Invalid object value type %i", paramStruct->dg->params.at(index).type);
+		}
+
+		size_t offset = GetParamOffset(paramStruct, index);
+		addr = GetObjectAddr(paramStruct->dg->params.at(index).type, paramStruct->dg->params.at(index).flags, paramStruct->orgParams, offset);
 	}
+	else
+	{
+		if(paramStruct->dg->thisFuncCallConv != CallConv_THISCALL)
+		{
+			return pContext->ThrowNativeError("Parameter 'this' is only available in member functions, specify the calling convention type 'thiscall'");
+		}
 
-	size_t offset = GetParamOffset(paramStruct, index);
-	void *addr = GetObjectAddr(paramStruct->dg->params.at(index).type, paramStruct->dg->params.at(index).flags, paramStruct->orgParams, offset);
+		if(paramStruct->dg->thisType != ThisPointer_Address && paramStruct->dg->thisType != ThisPointer_CBaseEntity && !(paramStruct->dg->thisType == ThisPointer_Ignore && paramStruct->dg->hookType == HookType_GameRules))
+		{
+			return pContext->ThrowNativeError("Parameter 'this' is not specified as an address, it is not available");
+		}
+
+		addr = g_SHPtr->GetIfacePtr();
+	}
 
 	cell_t *buffer;
 	pContext->LocalToPhysAddr(params[5], &buffer);
@@ -1305,21 +1362,40 @@ cell_t Native_SetParamObjectPtrVarVector(IPluginContext *pContext, const cell_t
 	{
 		return 0;
 	}
+	
+	void *addr = NULL;
 
-	if(params[2] <= 0 || params[2] > (int)paramStruct->dg->params.size())
+	if(params[2] != 0)
 	{
-		return pContext->ThrowNativeError("Invalid param number %i max params is %i", params[2], paramStruct->dg->params.size());
-	}
+		if(params[2] < 0 || params[2] > (int)paramStruct->dg->params.size())
+		{
+			return pContext->ThrowNativeError("Invalid param number %i max params is %i", params[2], paramStruct->dg->params.size());
+		}
 
-	int index = params[2] - 1;
+		int index = params[2] - 1;
 
-	if(paramStruct->dg->params.at(index).type != HookParamType_ObjectPtr && paramStruct->dg->params.at(index).type != HookParamType_Object)
-	{
-		return pContext->ThrowNativeError("Invalid object value type %i", paramStruct->dg->params.at(index).type);
+		if(paramStruct->dg->params.at(index).type != HookParamType_ObjectPtr && paramStruct->dg->params.at(index).type != HookParamType_Object)
+		{
+			return pContext->ThrowNativeError("Invalid object value type %i", paramStruct->dg->params.at(index).type);
+		}
+
+		size_t offset = GetParamOffset(paramStruct, index);
+		addr = GetObjectAddr(paramStruct->dg->params.at(index).type, paramStruct->dg->params.at(index).flags, paramStruct->orgParams, offset);
 	}
+	else
+	{
+		if(paramStruct->dg->thisFuncCallConv != CallConv_THISCALL)
+		{
+			return pContext->ThrowNativeError("Parameter 'this' is only available in member functions, specify the calling convention type 'thiscall'");
+		}
 
-	size_t offset = GetParamOffset(paramStruct, index);
-	void *addr = GetObjectAddr(paramStruct->dg->params.at(index).type, paramStruct->dg->params.at(index).flags, paramStruct->orgParams, offset);
+		if(paramStruct->dg->thisType != ThisPointer_Address && paramStruct->dg->thisType != ThisPointer_CBaseEntity && !(paramStruct->dg->thisType == ThisPointer_Ignore && paramStruct->dg->hookType == HookType_GameRules))
+		{
+			return pContext->ThrowNativeError("Parameter 'this' is not specified as an address, it is not available");
+		}
+
+		addr = g_SHPtr->GetIfacePtr();
+	}
 
 	cell_t *buffer;
 	pContext->LocalToPhysAddr(params[5], &buffer);
@@ -1359,20 +1435,39 @@ cell_t Native_GetParamObjectPtrString(IPluginContext *pContext, const cell_t *pa
 		return 0;
 	}
 
-	if(params[2] <= 0 || params[2] > (int)paramStruct->dg->params.size())
+	void *addr = NULL;
+
+	if(params[2] != 0)
 	{
-		return pContext->ThrowNativeError("Invalid param number %i max params is %i", params[2], paramStruct->dg->params.size());
-	}
+		if(params[2] <= 0 || params[2] > (int)paramStruct->dg->params.size())
+		{
+			return pContext->ThrowNativeError("Invalid param number %i max params is %i", params[2], paramStruct->dg->params.size());
+		}
 
-	int index = params[2] - 1;
+		int index = params[2] - 1;
 
-	if(paramStruct->dg->params.at(index).type != HookParamType_ObjectPtr && paramStruct->dg->params.at(index).type != HookParamType_Object)
-	{
-		return pContext->ThrowNativeError("Invalid object value type %i", paramStruct->dg->params.at(index).type);
+		if(paramStruct->dg->params.at(index).type != HookParamType_ObjectPtr && paramStruct->dg->params.at(index).type != HookParamType_Object)
+		{
+			return pContext->ThrowNativeError("Invalid object value type %i", paramStruct->dg->params.at(index).type);
+		}
+
+		size_t offset = GetParamOffset(paramStruct, index);
+		addr = GetObjectAddr(paramStruct->dg->params.at(index).type, paramStruct->dg->params.at(index).flags, paramStruct->orgParams, offset);
 	}
+	else
+	{
+		if(paramStruct->dg->thisFuncCallConv != CallConv_THISCALL)
+		{
+			return pContext->ThrowNativeError("Parameter 'this' is only available in member functions, specify the calling convention type 'thiscall'");
+		}
 
-	size_t offset = GetParamOffset(paramStruct, index);
-	void *addr = GetObjectAddr(paramStruct->dg->params.at(index).type, paramStruct->dg->params.at(index).flags, paramStruct->orgParams, offset);
+		if(paramStruct->dg->thisType != ThisPointer_Address && paramStruct->dg->thisType != ThisPointer_CBaseEntity && !(paramStruct->dg->thisType == ThisPointer_Ignore && paramStruct->dg->hookType == HookType_GameRules))
+		{
+			return pContext->ThrowNativeError("Parameter 'this' is not specified as an address, it is not available");
+		}
+
+		addr = g_SHPtr->GetIfacePtr();
+	}
 
 	switch((ObjectValueType)params[4])
 	{
diff --git a/extensions/dhooks/vhook.h b/extensions/dhooks/vhook.h
index b58f9c4ff1..92dd279e80 100644
--- a/extensions/dhooks/vhook.h
+++ b/extensions/dhooks/vhook.h
@@ -162,6 +162,7 @@ class DHooksInfo
 	int entity;
 	ThisPointerType thisType;
 	HookType hookType;
+	CallingConvention thisFuncCallConv;
 };
 
 class DHooksCallback : public SourceHook::ISHDelegate, public DHooksInfo
diff --git a/plugins/include/dhooks.inc b/plugins/include/dhooks.inc
index 99f17e7e8f..fa36aa0102 100644
--- a/plugins/include/dhooks.inc
+++ b/plugins/include/dhooks.inc
@@ -310,7 +310,7 @@ methodmap DHookParam < Handle
 
 	// Gets an object's variable value.
 	//
-	// @param num           Parameter number to get, starting at 1.
+	// @param num           Parameter number to get, 0 for param "this", other parameters start from 1
 	// @param offset        Byte offset within the object to the var to get.
 	// @param type          Type of var it is.
 	//
@@ -320,7 +320,7 @@ methodmap DHookParam < Handle
 
 	// Gets an object's vector variable value.
 	//
-	// @param num           Parameter number to get, starting at 1.
+	// @param num           Parameter number to get, 0 for param "this", other parameters start from 1.
 	// @param offset        Byte offset within the object to the var to get.
 	// @param type          Type of var it is.
 	// @param vec           Buffer to store the result vector.
@@ -330,7 +330,7 @@ methodmap DHookParam < Handle
 
 	// Gets an object's string variable value.
 	//
-	// @param num           Parameter number to get, starting at 1.
+	// @param num           Parameter number to get, 0 for param "this", other parameters start from 1.
 	// @param offset        Byte offset within the object to the var to get.
 	// @param type          Type of var it is.
 	// @param buffer        Buffer to store the result string.
@@ -344,7 +344,7 @@ methodmap DHookParam < Handle
 	// The changes are only applied when MRES_ChangedHandled or MRES_ChangedOverride
 	// is returned in the callback.
 	//
-	// @param num           Parameter number to set, starting at 1.
+	// @param num           Parameter number to set, 0 for param "this", other parameters start from 1.
 	// @param offset        Byte offset within the object to the var to set.
 	// @param type          Type of var it is.
 	// @param value         The value to set the var to.
@@ -357,7 +357,7 @@ methodmap DHookParam < Handle
 	// The changes are only applied when MRES_ChangedHandled or MRES_ChangedOverride
 	// is returned in the callback.
 	//
-	// @param num           Parameter number to set, starting at 1.
+	// @param num           Parameter number to set, 0 for param "this", other parameters start from 1.
 	// @param offset        Byte offset within the object to the var to set.
 	// @param type          Type of var it is.
 	// @param vec           The value to set the vector var to.
@@ -928,7 +928,7 @@ native void DHookSetReturnString(Handle hReturn, char[] value);
  * Gets an objects variable value
  *
  * @param hParams           Handle to params structure
- * @param num               Param number to get.
+ * @param num               Param number to get, 0 for param "this".
  * @param offset            Offset within the object to the var to get.
  * @param type              Type of var it is
  *
@@ -941,7 +941,7 @@ native any DHookGetParamObjectPtrVar(Handle hParams, int num, int offset, Object
  * Sets an objects variable value
  *
  * @param hParams           Handle to params structure
- * @param num               Param number to set.
+ * @param num               Param number to set, 0 for param "this".
  * @param offset            Offset within the object to the var to set.
  * @param type              Type of var it is
  * @param value             The value to set the var to.
@@ -954,7 +954,7 @@ native void DHookSetParamObjectPtrVar(Handle hParams, int num, int offset, Objec
  * Gets an objects vector variable value
  *
  * @param hParams           Handle to params structure
- * @param num               Param number to get.
+ * @param num               Param number to get, 0 for param "this".
  * @param offset            Offset within the object to the var to get.
  * @param type              Type of var it is
  * @param buffer            Buffer to store the result vector
@@ -967,7 +967,7 @@ native void DHookGetParamObjectPtrVarVector(Handle hParams, int num, int offset,
  * Sets an objects vector variable value
  *
  * @param hParams           Handle to params structure
- * @param num               Param number to set.
+ * @param num               Param number to set, 0 for param "this".
  * @param offset            Offset within the object to the var to set.
  * @param type              Type of var it is
  * @param value             The value to set the vector var to.
@@ -980,7 +980,7 @@ native void DHookSetParamObjectPtrVarVector(Handle hParams, int num, int offset,
  * Gets an objects string variable value
  *
  * @param hParams           Handle to params structure
- * @param num               Param number to get.
+ * @param num               Param number to get, 0 for param "this".
  * @param offset            Offset within the object to the var to get.
  * @param type              Type of var it is
  * @param buffer            Buffer to store the result vector