(svn r16400) -Add [NoAI]: add AISignList that can be used to get a list of valid signs. This makes AISign::GetMaxSignID obsolete.

src/ai/api/ai_signlist.cpp

@@ -0,0 +1,15 @@
+/* $Id$ */
+
+/** @file ai_signlist.cpp Implementation of AISignList and friends. */
+
+#include "ai_signlist.hpp"
+#include "ai_sign.hpp"
+#include "../../signs_base.h"
+
+AISignList::AISignList()
+{
+	Sign *s;
+	FOR_ALL_SIGNS(s) {
+		if (AISign::IsValidSign(s->index)) this->AddItem(s->index);
+	}
+}