First version of the SOurce SDK 2013

1 files changed, 215 insertions, 0 deletions

diff --git a/mp/src/game/server/ai_eventresponse.cpp b/mp/src/game/server/ai_eventresponse.cpp
new file mode 100644
index 00000000..5582df1b
--- /dev/null
+++ b/mp/src/game/server/ai_eventresponse.cpp
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+//========= Copyright Valve Corporation, All rights reserved. ============//

+//

+// Purpose: AI system that makes NPCs verbally respond to game events

+//

+//=============================================================================

+

+#include "cbase.h"

+#include "ai_eventresponse.h"

+#include "ai_basenpc.h"

+

+ConVar	ai_debug_eventresponses( "ai_debug_eventresponses", "0", FCVAR_NONE, "Set to 1 to see all NPC response events trigger, and which NPCs choose to respond to them." );

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+CNPCEventResponseSystem g_NPCEventResponseSystem( "CNPCEventResponseSystem" );

+

+CNPCEventResponseSystem *NPCEventResponse()

+{

+	return &g_NPCEventResponseSystem;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CNPCEventResponseSystem::LevelInitPreEntity( void )

+{

+	m_ActiveEvents.Purge();

+	m_flNextEventPoll = 0;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CNPCEventResponseSystem::TriggerEvent( const char *pResponse, bool bForce, bool bCancelScript )

+{

+	m_flNextEventPoll = gpGlobals->curtime;

+

+	// Find the event by name

+	int iIndex = m_ActiveEvents.Find( pResponse );

+	if ( iIndex == m_ActiveEvents.InvalidIndex() )

+	{

+		storedevent_t newEvent;

+		newEvent.flEventTime = gpGlobals->curtime;

+		newEvent.flNextResponseTime = 0;

+		newEvent.bForce = bForce;

+		newEvent.bCancelScript = bCancelScript;

+		newEvent.bPreventExpiration = false;

+		m_ActiveEvents.Insert( pResponse, newEvent );

+

+		if ( ai_debug_eventresponses.GetBool() ) 

+		{

+			Msg( "NPCEVENTRESPONSE: (%.2f) Trigger fired for event named: %s\n", gpGlobals->curtime, pResponse );

+		}

+	}

+	else 

+	{

+		// Update the trigger time

+		m_ActiveEvents[iIndex].flEventTime = gpGlobals->curtime;

+		m_ActiveEvents[iIndex].bForce = bForce;

+		m_ActiveEvents[iIndex].bCancelScript = bCancelScript;

+

+		if ( ai_debug_eventresponses.GetBool() ) 

+		{

+			Msg( "NPCEVENTRESPONSE: (%.2f) Trigger resetting already-active event firing named: %s\n", gpGlobals->curtime, pResponse );

+		}

+	}

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CNPCEventResponseSystem::FrameUpdatePreEntityThink()

+{

+ 	if ( !m_ActiveEvents.Count() || !AI_IsSinglePlayer() || !UTIL_GetLocalPlayer() )

+		return;

+

+	if ( m_flNextEventPoll > gpGlobals->curtime )

+		return;

+	m_flNextEventPoll = gpGlobals->curtime + 0.2;

+

+	// Move through all events, removing expired ones and finding NPCs for active ones.

+	for ( int i = m_ActiveEvents.First(); i != m_ActiveEvents.InvalidIndex(); )

+	{	

+ 		float flTime = m_ActiveEvents[i].flEventTime;

+		const char *pResponse = m_ActiveEvents.GetElementName(i);

+

+		// Save off the next index so we can safely remove this one

+		int iNext = m_ActiveEvents.Next(i); 

+

+		// Should it have expired by now?

+		if ( !m_ActiveEvents[i].bPreventExpiration && (flTime + NPCEVENTRESPONSE_GIVEUP_TIME) < gpGlobals->curtime )

+		{

+			if ( ai_debug_eventresponses.GetBool() ) 

+			{

+				Msg( "NPCEVENTRESPONSE: (%.2f) Removing expired event named: %s\n", gpGlobals->curtime, pResponse );

+			}

+

+			m_ActiveEvents.RemoveAt(i);

+		}

+		else if ( m_ActiveEvents[i].flNextResponseTime < gpGlobals->curtime )

+		{

+			// If we've fired once, and our current event should expire now, then expire.

+			if ( m_ActiveEvents[i].bPreventExpiration && (flTime + NPCEVENTRESPONSE_GIVEUP_TIME) < gpGlobals->curtime )

+			{

+				if ( ai_debug_eventresponses.GetBool() ) 

+				{

+					Msg( "NPCEVENTRESPONSE: (%.2f) Removing expired fired event named: %s\n", gpGlobals->curtime, pResponse );

+				}

+

+				m_ActiveEvents.RemoveAt(i);

+			}

+			else

+			{

+				float flNearestDist = NPCEVENTRESPONSE_DISTANCE_SQR;

+				CAI_BaseNPC *pNearestNPC = NULL;

+				Vector vecPlayerCenter = UTIL_GetLocalPlayer()->WorldSpaceCenter();

+

+				// Try and find the nearest NPC to the player

+				CAI_BaseNPC **ppAIs = g_AI_Manager.AccessAIs();

+				for ( int j = 0; j < g_AI_Manager.NumAIs(); j++ )

+				{

+					if ( ppAIs[j]->CanRespondToEvent( pResponse ))

+					{

+						float flDistToPlayer = ( vecPlayerCenter - ppAIs[j]->WorldSpaceCenter()).LengthSqr();

+						if ( flDistToPlayer < flNearestDist )

+						{

+							flNearestDist = flDistToPlayer;

+							pNearestNPC = ppAIs[j];

+						}

+					}

+				}

+

+				// Found one? 

+				if ( pNearestNPC )

+				{

+					if ( pNearestNPC->RespondedTo( pResponse, m_ActiveEvents[i].bForce, m_ActiveEvents[i].bCancelScript ) )

+					{

+						// Don't remove the response yet. Leave it around until the refire time has expired.

+						// This stops repeated firings of the same concept from spamming the NPCs.

+						m_ActiveEvents[i].bPreventExpiration = true;

+						m_ActiveEvents[i].flNextResponseTime = gpGlobals->curtime + NPCEVENTRESPONSE_REFIRE_TIME;

+

+						if ( ai_debug_eventresponses.GetBool() ) 

+						{

+							Msg( "NPCEVENTRESPONSE: (%.2f) Event '%s' responded to by NPC '%s'. Refire available at: %.2f\n", gpGlobals->curtime, pResponse, pNearestNPC->GetDebugName(), m_ActiveEvents[i].flNextResponseTime );

+						}

+

+						// Don't issue multiple responses at once

+						return;

+					}

+				}

+			}

+		}

+

+		i = iNext;

+	}

+}

+

+//---------------------------------------------------------------------------------------------

+// Entity version for mapmaker to hook into the system

+//---------------------------------------------------------------------------------------------

+class CNPCEventResponseSystemEntity : public CBaseEntity

+{

+	DECLARE_CLASS( CNPCEventResponseSystemEntity, CBaseEntity );

+public:

+	DECLARE_DATADESC();

+

+	void	Spawn();

+	void 	InputTriggerResponseEvent( inputdata_t &inputdata );

+	void 	InputForceTriggerResponseEvent( inputdata_t &inputdata );

+	void 	InputForceTriggerResponseEventNoCancel( inputdata_t &inputdata );

+};

+

+LINK_ENTITY_TO_CLASS( ai_npc_eventresponsesystem, CNPCEventResponseSystemEntity );

+

+BEGIN_DATADESC( CNPCEventResponseSystemEntity )

+	DEFINE_INPUTFUNC( FIELD_STRING,	"TriggerResponseEvent",	InputTriggerResponseEvent ),

+	DEFINE_INPUTFUNC( FIELD_STRING,	"ForceTriggerResponseEvent", InputForceTriggerResponseEvent ),

+	DEFINE_INPUTFUNC( FIELD_STRING,	"ForceTriggerResponseEventNoCancel", InputForceTriggerResponseEventNoCancel ),

+END_DATADESC()

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CNPCEventResponseSystemEntity::Spawn( void )

+{

+	// Invisible, non solid.

+	AddSolidFlags( FSOLID_NOT_SOLID );

+	AddEffects( EF_NODRAW );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CNPCEventResponseSystemEntity::InputTriggerResponseEvent( inputdata_t &inputdata )

+{

+	NPCEventResponse()->TriggerEvent( inputdata.value.String(), false, false );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CNPCEventResponseSystemEntity::InputForceTriggerResponseEvent( inputdata_t &inputdata )

+{

+	NPCEventResponse()->TriggerEvent( inputdata.value.String(), true, true );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CNPCEventResponseSystemEntity::InputForceTriggerResponseEventNoCancel( inputdata_t &inputdata )

+{

+	NPCEventResponse()->TriggerEvent( inputdata.value.String(), true, false );

+}