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game/server/tf/bot/map_entities/tf_spawner.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+// tf_spawner.cpp
+// Entity to spawn one or more templatized entities
+// Michael Booth, April 2011
+
+#include "cbase.h"
+
+#include "tf_gamerules.h"
+#include "bot/map_entities/tf_spawner.h"
+
+
+//------------------------------------------------------------------------------
+BEGIN_DATADESC( CTFSpawner )
+	DEFINE_KEYFIELD( m_spawnCount,		FIELD_INTEGER,	"count" ),
+	DEFINE_KEYFIELD( m_maxActiveCount,	FIELD_INTEGER,	"maxActive" ),
+	DEFINE_KEYFIELD( m_spawnInterval,	FIELD_FLOAT,	"interval" ),
+	DEFINE_KEYFIELD( m_templateName,	FIELD_STRING,	"template" ),
+
+	DEFINE_INPUTFUNC( FIELD_VOID, "Reset", InputReset ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "Enable", InputEnable ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "Disable", InputDisable ),
+
+	DEFINE_OUTPUT( m_onExpended, "OnExpended" ),
+	DEFINE_OUTPUT( m_onSpawned, "OnSpawned" ),
+	DEFINE_OUTPUT( m_onKilled, "OnKilled" ),
+
+	DEFINE_THINKFUNC( SpawnerThink ),
+END_DATADESC()
+
+LINK_ENTITY_TO_CLASS( tf_spawner, CTFSpawner );
+
+
+//------------------------------------------------------------------------------
+CTFSpawner::CTFSpawner( void ) 
+{
+	Reset();
+}
+
+
+//------------------------------------------------------------------------------
+void CTFSpawner::Reset( void )
+{
+	m_bExpended = false;
+	m_spawnCountRemaining = 0;
+	m_spawnedVector.RemoveAll();
+	SetThink( NULL );
+}
+
+
+//------------------------------------------------------------------------------
+void CTFSpawner::InputReset( inputdata_t &inputdata )
+{
+	Reset();
+}
+
+
+//------------------------------------------------------------------------------
+void CTFSpawner::InputEnable( inputdata_t &inputdata )
+{
+	if ( m_bExpended )
+	{
+		return;
+	}
+
+	SetThink( &CTFSpawner::SpawnerThink );
+
+	if ( m_spawnCountRemaining )
+	{
+		// already generating - don't restart count
+		return;
+	}
+
+	SetNextThink( gpGlobals->curtime );
+	m_spawnCountRemaining = m_spawnCount;
+
+	m_template = dynamic_cast< CTFSpawnTemplate * >( gEntList.FindEntityByName( NULL, m_templateName ) );
+	if ( m_template == NULL )
+	{
+		Warning( "%s failed to find template named '%s'\n", GetClassname(), STRING( m_templateName ) );
+	}
+}
+
+
+//------------------------------------------------------------------------------
+void CTFSpawner::InputDisable( inputdata_t &inputdata )
+{
+	// just stop thinking
+	SetThink( NULL );
+}
+
+
+//------------------------------------------------------------------------------
+void CTFSpawner::OnKilled( CBaseEntity *dead )
+{
+	m_onKilled.FireOutput( dead, this );
+}
+
+
+//------------------------------------------------------------------------------
+void CTFSpawner::SpawnerThink( void )
+{
+	// still waiting for the real game to start?
+	gamerules_roundstate_t roundState = TFGameRules()->State_Get();
+	if ( roundState >= GR_STATE_TEAM_WIN || roundState < GR_STATE_PREROUND ||  TFGameRules()->IsInWaitingForPlayers() )
+	{
+		SetNextThink( gpGlobals->curtime + 1.0f );
+		return;
+	}
+
+	// clean up destroyed children
+	for ( int i = 0; i < m_spawnedVector.Count(); )
+	{
+		CHandle< CBaseEntity > child = m_spawnedVector[i];
+
+		if ( child == NULL )
+		{
+			m_spawnedVector.FastRemove(i);
+			m_onKilled.FireOutput( this, this );
+			continue;
+		}
+
+		++i;
+	}
+
+	if ( m_spawnedVector.Count() >= m_maxActiveCount )
+	{
+		// reached max simultanous active count
+		SetNextThink( gpGlobals->curtime + 0.1f );
+		return;
+	}
+
+	if ( m_template == NULL )
+	{
+		// nothing to spawn!
+		return;
+	}
+
+	// spawn the entity
+	CBaseEntity *child = m_template->Instantiate();
+	if ( child )
+	{
+		m_spawnedVector.AddToTail( child );
+
+		child->SetAbsOrigin( GetAbsOrigin() );
+		child->SetAbsAngles( GetAbsAngles() );
+		child->SetOwnerEntity( this );
+
+		DispatchSpawn( child );
+		m_onSpawned.FireOutput( child, this );
+
+		--m_spawnCountRemaining;
+		if ( m_spawnCountRemaining )
+		{
+			SetNextThink( gpGlobals->curtime + m_spawnInterval );
+		}
+		else
+		{
+			SetThink( NULL );
+			m_onExpended.FireOutput( this, this );
+			m_bExpended = true;
+		}
+	}
+}