1 files changed, 118 insertions, 0 deletions
diff --git a/game/server/NextBot/Behavior/BehaviorBackUp.h b/game/server/NextBot/Behavior/BehaviorBackUp.h
new file mode 100644
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+++ b/game/server/NextBot/Behavior/BehaviorBackUp.h
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+// BehaviorBackUp.h
+// Back up for a short duration
+// Author: Michael Booth, March 2007
+//========= Copyright Valve Corporation, All rights reserved. ============//
+
+#ifndef _BEHAVIOR_BACK_UP_H_
+#define _BEHAVIOR_BACK_UP_H_
+
+
+//----------------------------------------------------------------------------------------------
+/**
+ * Move backwards for a short duration away from a given position.  
+ * Useful to dislodge ourselves if we get stuck while following our path.
+ */
+template < typename Actor >
+class BehaviorBackUp : public Action< Actor >
+{
+public:
+	BehaviorBackUp( const Vector &avoidPos );
+
+	virtual ActionResult< Actor > OnStart( Actor *me, Action< Actor > *priorAction );
+	virtual ActionResult< Actor > Update( Actor *me, float interval );
+
+	virtual EventDesiredResult< Actor > OnStuck( Actor *me );
+
+	virtual const char *GetName( void ) const	{ return "BehaviorBackUp"; }
+
+private:
+	CountdownTimer m_giveUpTimer;
+	CountdownTimer m_backupTimer;
+	CountdownTimer m_jumpTimer;
+	Vector m_way;
+	Vector m_avoidPos;
+};
+
+
+//----------------------------------------------------------------------------------------------
+template < typename Actor >
+inline BehaviorBackUp< Actor >::BehaviorBackUp( const Vector &avoidPos )
+{
+	m_avoidPos = avoidPos;
+}
+
+
+//----------------------------------------------------------------------------------------------
+template < typename Actor >
+inline ActionResult< Actor > BehaviorBackUp< Actor >::OnStart( Actor *me, Action< Actor > *priorAction )
+{
+	ILocomotion *mover = me->GetLocomotionInterface();
+
+	// don't back off if we're on a ladder
+	if ( mover && mover->IsUsingLadder() )
+	{
+		return Done();
+	}
+	
+	float backupTime = RandomFloat( 0.3f, 0.5f );
+	
+	m_backupTimer.Start( backupTime );
+	m_jumpTimer.Start( 1.5f * backupTime );
+	m_giveUpTimer.Start( 2.5f * backupTime );
+	
+	m_way = me->GetPosition() - m_avoidPos;
+	m_way.NormalizeInPlace();
+	
+	return Continue();
+}
+
+
+//----------------------------------------------------------------------------------------------
+template < typename Actor >
+inline ActionResult< Actor > BehaviorBackUp< Actor >::Update( Actor *me, float interval )
+{
+	if ( m_giveUpTimer.IsElapsed() )
+	{
+		return Done();
+	}
+
+// 	if ( m_jumpTimer.HasStarted() && m_jumpTimer.IsElapsed() )
+// 	{
+// 		me->GetLocomotionInterface()->Jump();
+// 		m_jumpTimer.Invalidate();
+// 	}
+
+	ILocomotion *mover = me->GetLocomotionInterface();
+	if ( mover )
+	{
+		Vector goal;
+
+		if ( m_backupTimer.IsElapsed() )
+		{
+			// move towards bad spot
+			goal = m_avoidPos; // me->GetPosition() - 100.0f * m_way;
+		}
+		else
+		{
+			// move away from bad spot
+			goal = me->GetPosition() + 100.0f * m_way;
+		}
+
+		mover->Approach( goal );
+	}
+	
+	return Continue();
+}
+
+
+//----------------------------------------------------------------------------------------------
+template < typename Actor >
+inline EventDesiredResult< Actor > BehaviorBackUp< Actor >::OnStuck( Actor *me )
+{
+	return TryToSustain( RESULT_IMPORTANT, "Stuck while trying to back up" );
+}
+
+
+
+#endif // _BEHAVIOR_BACK_UP_H_
+