1 files changed, 31 insertions, 0 deletions
diff --git a/tf2/IAppSystem.h b/tf2/IAppSystem.h
new file mode 100644
index 0000000..84af8c2
--- /dev/null
+++ b/tf2/IAppSystem.h
@@ -0,0 +1,31 @@
+#pragma once
+
+class AppSystemInfo_t;
+
+enum InitReturnVal_t;
+
+enum AppSystemTier_t {
+	APP_SYSTEM_TIER0 = 0,
+	APP_SYSTEM_TIER1,
+	APP_SYSTEM_TIER2,
+	APP_SYSTEM_TIER3,
+
+	APP_SYSTEM_TIER_OTHER,
+};
+
+using CreateInterfaceFn = void*( *)( const char*, int* );
+
+class IAppSystem {
+public:
+	// Here's where the app systems get to learn about each other 
+	virtual bool Connect( CreateInterfaceFn factory ) = 0;
+	virtual void Disconnect( ) = 0;
+
+	// Here's where systems can access other interfaces implemented by this object
+	// Returns NULL if it doesn't implement the requested interface
+	virtual void *QueryInterface( const char *pInterfaceName ) = 0;
+
+	// Init, shutdown
+	virtual InitReturnVal_t Init( ) = 0;
+	virtual void Shutdown( ) = 0;
+};
+\ No newline at end of file