Implement per-client randomized menus with MenuShufflePerClient native.

plugins/include/menus.inc

@@ -307,9 +307,16 @@ methodmap Menu < Handle
 	// @param style         By-reference variable to store drawing flags.
 	// @param dispBuf       Display buffer.
 	// @param dispBufLen    Maximum length of the display buffer.
+	// @param client		Client index. Must be specified if menu is per-client random shuffled, -1 to ignore.
 	// @return              True on success, false if position is invalid.
 	public native bool GetItem(int position, char[] infoBuf, int infoBufLen,
-							   int &style=0, char[] dispBuf="", int dispBufLen=0);
+							   int &style=0, char[] dispBuf="", int dispBufLen=0, int client=0);
+
+	// Generates a per-client random mapping for the current vote options.
+	//
+	// @param start         Menu item index to start randomizing from.
+	// @param stop          Menu item index to stop randomizing at. -1 = infinite
+	public native void ShufflePerClient(int start=0, int stop=-1);
 
 	// Sets the menu's default title/instruction message.
 	//
@@ -537,6 +544,7 @@ native void RemoveAllMenuItems(Handle menu);
  * @param style         By-reference variable to store drawing flags.
  * @param dispBuf       Display buffer.
  * @param dispBufLen    Maximum length of the display buffer.
+ * @param client		Client index. Must be specified if menu is per-client random shuffled, -1 to ignore.
  * @return              True on success, false if position is invalid.
  * @error               Invalid Handle.
  */
@@ -546,7 +554,16 @@ native bool GetMenuItem(Handle menu,
 						int infoBufLen,
 						int &style=0,
 						char[] dispBuf="",
-						int dispBufLen=0);
+						int dispBufLen=0,
+						int client=0);
+
+/**
+ * Generates a per-client random mapping for the current vote options.
+ *
+ * @param start         Menu item index to start randomizing from.
+ * @param stop          Menu item index to stop randomizing at. -1 = infinite
+ */
+native void MenuShufflePerClient(Handle menu, int start=0, int stop=-1);
 
 /**
  * Returns the first item on the page of a currently selected menu.