Replace IPanel::PaintTraverse hook with IEngineVGui::Paint.

* Add example watermark text in bottom-right corner.

Signed-off-by: aixxe <me@aixxe.net>

include/cstrike/Interfaces/IEngineVGui.h

@@ -0,0 +1,26 @@
+#pragma once
+
+enum VGuiPanel_t {
+	PANEL_ROOT = 0,
+	PANEL_GAMEUIDLL,
+	PANEL_CLIENTDLL,
+	PANEL_TOOLS,
+	PANEL_INGAMESCREENS,
+	PANEL_GAMEDLL,
+	PANEL_CLIENTDLL_TOOLS
+};
+
+enum PaintMode_t {
+	PAINT_UIPANELS = (1 << 0),
+	PAINT_INGAMEPANELS = (1 << 1),
+	PAINT_CURSOR = (1 << 2)
+};
+
+class IEngineVGui {
+	public:
+		virtual ~IEngineVGui(void) {};
+		virtual VPANEL GetPanel(VGuiPanel_t type) = 0;
+		virtual bool IsGameUIVisible() = 0;
+};
+
+extern IEngineVGui* enginevgui;

include/cstrike/cstrike.h

@@ -31,6 +31,7 @@
 #include "Interfaces/ICvar.h"
 #include "Interfaces/IPanel.h"
 #include "Interfaces/ISurface.h"
+#include "Interfaces/IEngineVGui.h"
 #include "Interfaces/IVModelInfo.h"
 #include "Interfaces/ILauncherMgr.h"
 #include "Interfaces/IInputSystem.h"