1 files changed, 76 insertions, 0 deletions
diff --git a/game/server/dod/unisignals.h b/game/server/dod/unisignals.h
new file mode 100644
index 0000000..047ecd9
--- /dev/null
+++ b/game/server/dod/unisignals.h
@@ -0,0 +1,76 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose:
+//
+//=============================================================================//
+
+
+#ifndef __UNISIGNALS_H__
+#define __UNISIGNALS_H__
+
+
+
+// Unified signals allow state updating to be performed at one point in the
+// calling code.  The sequence of events is:
+//
+//   1. Signal( whatever ), Signal( whatever ), etc.
+//   2. ( GetState() & Update() ) to get only the changes since the last update
+//   3. Goto 1
+//
+// Or, alternately:
+//
+//   1. Signal( whatever ), Signal( whatever ), etc.
+//   2. Update()
+//   3. GetState()
+//   4. Goto 1
+
+
+class CUnifiedSignals
+{
+public:
+	inline CUnifiedSignals();
+	inline int Update();				// Returns a mask for the changed state bits; signals are cleared after this update is performed
+	inline void Signal( int flSignal );	// ORed combo of BPSIG_xxx bits
+	inline int GetState();				// Returns the current state (ORed combo of BPSIG_xxx flags)
+
+private:
+	int m_flSignal;						// States to trigger
+	int m_flState;						// States after the previous update
+};
+
+
+
+inline CUnifiedSignals::CUnifiedSignals()
+{
+	m_flSignal		= 0;
+	m_flState		= 0;
+}
+
+
+
+inline int CUnifiedSignals::Update()
+{
+	int old		= m_flState;
+	m_flState	= m_flSignal;
+	m_flSignal	= 0;
+	
+	return m_flState ^ old;
+}
+
+
+
+inline void CUnifiedSignals::Signal( int flSignal )
+{
+	m_flSignal |= flSignal; 
+}
+
+
+
+inline int CUnifiedSignals::GetState()
+{
+	return m_flState; 
+}
+
+
+
+#endif // __UNISIGNALS_H__