Added original SDK code for Alien Swarm.

public/IHammer.h

@@ -0,0 +1,69 @@
+//========= Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ============//
+//
+// Purpose: The application object.
+//
+//=============================================================================//
+
+#ifndef IHAMMER_H
+#define IHAMMER_H
+
+#include "appframework/IAppSystem.h"
+
+typedef struct tagMSG MSG;
+
+
+class IStudioDataCache;
+
+
+//-----------------------------------------------------------------------------
+// Return values for RequestNewConfig
+//-----------------------------------------------------------------------------
+enum RequestRetval_t
+{
+	REQUEST_OK = 0,
+	REQUEST_QUIT
+};
+
+
+//-----------------------------------------------------------------------------
+// Interface used to drive hammer
+//-----------------------------------------------------------------------------
+#define INTERFACEVERSION_HAMMER	"Hammer001"
+class IHammer : public IAppSystem
+{
+public:
+	virtual bool HammerPreTranslateMessage( MSG * pMsg ) = 0;
+	virtual bool HammerIsIdleMessage( MSG * pMsg ) = 0;
+	virtual bool HammerOnIdle( long count ) = 0;
+
+	virtual void RunFrame() = 0;
+
+	// Returns the mod and the game to initially start up
+	virtual const char *GetDefaultMod() = 0;
+	virtual const char *GetDefaultGame() = 0;
+
+	virtual bool InitSessionGameConfig( const char *szGameDir ) = 0;
+
+	// Request a new config from hammer's config system
+	virtual RequestRetval_t RequestNewConfig() = 0;
+
+	// Returns the full path to the mod and the game to initially start up
+	virtual const char *GetDefaultModFullPath() = 0;
+
+	virtual int MainLoop() = 0;
+
+	// When Foundry is using Hammer:
+	// - Hammer doesn't create its main window.
+	// - Select windows (like the object properties dialog) are parented to the game's window and share its message pump
+	// - A CMapView3D is created and renders only entities on top of the game's 3D window
+	virtual void InitFoundryMode( CreateInterfaceFn factory, void *hGameWnd, const char *szGameDir ) = 0;
+
+	// Called when the engine's window took the focus.
+	virtual void NoteEngineGotFocus() = 0;
+	
+	// Used in Foundry to show and hide the full Hammer UI.
+	virtual bool IsHammerVisible() = 0;
+	virtual void ToggleHammerVisible() = 0;
+};	
+
+#endif // IHAMMER_H