From b7f85036553297d665aca419822db51611fe2751 Mon Sep 17 00:00:00 2001
From: David Anderson <dvander@alliedmods.net>
Date: Mon, 22 Oct 2007 19:52:06 +0000
Subject: [PATCH] added amb844 - get_pdata_ent

---
 dlls/fakemeta/pdata.cpp      | 38 +++++++++++++++++++++++++++++++++++-
 plugins/include/fakemeta.inc | 14 +++++++++++++
 2 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/dlls/fakemeta/pdata.cpp b/dlls/fakemeta/pdata.cpp
index 1d924564..c30aba64 100755
--- a/dlls/fakemeta/pdata.cpp
+++ b/dlls/fakemeta/pdata.cpp
@@ -143,12 +143,48 @@ static cell AMX_NATIVE_CALL set_pdata_string(AMX *amx, cell *params)
 	return 1;
 }
 
-AMX_NATIVE_INFO pdata_natives[] = {
+static cell AMX_NATIVE_CALL get_pdata_ent(AMX *amx, cell *params)
+{
+	int index=params[1];
+	int iOffset=params[2];
+
+	CHECK_ENTITY(index);
+
+#ifdef __linux__
+	iOffset += params[3];
+#endif
+
+	edict_t *pEdict = *(edict_t **)((char *)(INDEXENT2(index)->pvPrivateData) + iOffset);
+
+	if (pEdict == NULL)
+	{
+		return -1;
+	}
+
+	edict_t *pWorld = INDEXENT(0);
+	int ent = pEdict - pWorld;
+
+	if (ent < 0 || ent > gpGlobals->maxEntities)
+	{
+		return -2;
+	}
+
+	if (pEdict->free || pEdict->pvPrivateData == NULL)
+	{
+		return -1;
+	}
+
+	return ent;
+}
+
+AMX_NATIVE_INFO pdata_natives[] =
+{
 	{ "get_pdata_int",		get_pdata_int },
 	{ "set_pdata_int",		set_pdata_int },
 	{ "get_pdata_float",	get_pdata_float },
 	{ "set_pdata_float",	set_pdata_float },
 	{ "set_pdata_string",	set_pdata_string },
 	{ "get_pdata_string",	get_pdata_string },
+	{ "get_pdata_ent",		get_pdata_ent },
 	{ NULL,					NULL }
 };
diff --git a/plugins/include/fakemeta.inc b/plugins/include/fakemeta.inc
index fdc94161..d44c0aad 100755
--- a/plugins/include/fakemeta.inc
+++ b/plugins/include/fakemeta.inc
@@ -110,6 +110,20 @@ native Float:get_pdata_float(_index,_Offset,_linuxdiff=5);
 /* Sets a float from private data.  _linuxdiff is added into the _Offset if it's used on a linux server. */
 native set_pdata_float(_index,_Offset,Float:_Value,_linuxdiff=5);
 
+/**
+ * Tries to retrieve an edict (entity encapsulation) pointer from an entity's private data.
+ *
+ * This function is byte-addressable.  Unlike get_pdata_int() which searches in byte increments of 4, 
+ * get_pdata_end searches in increments of 1.
+ *
+ * @param _index		Entity index.
+ * @param _offset		Offset to search.
+ * @param _linuxdiff	Linux difference.
+ * @return				-2 if an invalid entity was found.
+ *						-1 if an empty entity was found.
+ * 						Otherwise, an entity index is returned.
+ */
+native get_pdata_ent(_index, _offset, _linuxdiff=20);
 
 /* Registers a forward.
  * Returns an id you can pass to unregister_forward