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1 files changed, 294 insertions, 0 deletions

diff --git a/game/server/hl1/hl1_monstermaker.cpp b/game/server/hl1/hl1_monstermaker.cpp
new file mode 100644
index 0000000..c7d37d2
--- /dev/null
+++ b/game/server/hl1/hl1_monstermaker.cpp
@@ -0,0 +1,294 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: An entity that creates NPCs in the game. 
+//
+//=============================================================================//
+
+#include "cbase.h"
+#include "entityapi.h"
+#include "entityoutput.h"
+#include "ai_basenpc.h"
+#include "hl1_monstermaker.h"
+#include "mapentities.h"
+
+
+BEGIN_DATADESC( CNPCMaker )
+
+	DEFINE_KEYFIELD( m_iMaxNumNPCs,			FIELD_INTEGER,	"monstercount" ),
+	DEFINE_KEYFIELD( m_iMaxLiveChildren,		FIELD_INTEGER,	"MaxLiveChildren" ),
+	DEFINE_KEYFIELD( m_flSpawnFrequency,		FIELD_FLOAT,	"delay" ),
+	DEFINE_KEYFIELD( m_bDisabled,			FIELD_BOOLEAN,	"StartDisabled" ),
+	DEFINE_KEYFIELD( m_iszNPCClassname,		FIELD_STRING,	"monstertype" ),
+
+	DEFINE_FIELD( m_cLiveChildren,			FIELD_INTEGER ),
+	DEFINE_FIELD( m_flGround,				FIELD_FLOAT ),
+
+	// Inputs
+	DEFINE_INPUTFUNC( FIELD_VOID, "Spawn",	InputSpawnNPC ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "Enable",	InputEnable ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "Disable",	InputDisable ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "Toggle",	InputToggle ),
+
+	// Outputs
+	DEFINE_OUTPUT( m_OnSpawnNPC, "OnSpawnNPC" ),
+
+	// Function Pointers
+	DEFINE_THINKFUNC( MakerThink ),
+
+END_DATADESC()
+
+
+LINK_ENTITY_TO_CLASS( monstermaker, CNPCMaker );
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Spawn
+//-----------------------------------------------------------------------------
+void CNPCMaker::Spawn( void )
+{
+	SetSolid( SOLID_NONE );
+	m_cLiveChildren		= 0;
+	Precache();
+
+	// If I can make an infinite number of NPC, force them to fade
+	if ( m_spawnflags & SF_NPCMAKER_INF_CHILD )
+	{
+		m_spawnflags |= SF_NPCMAKER_FADE;
+	}
+
+	//Start on?
+	if ( m_bDisabled == false )
+	{
+		SetThink ( &CNPCMaker::MakerThink );
+		SetNextThink( gpGlobals->curtime + m_flSpawnFrequency );
+	}
+	else
+	{
+		//wait to be activated.
+		SetThink ( &CBaseEntity::SUB_DoNothing );
+	}
+	m_flGround = 0;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Returns whether or not it is OK to make an NPC at this instant.
+//-----------------------------------------------------------------------------
+bool CNPCMaker::CanMakeNPC( void )
+{
+	if ( m_iMaxLiveChildren > 0 && m_cLiveChildren >= m_iMaxLiveChildren )
+	{// not allowed to make a new one yet. Too many live ones out right now.
+		return false;
+	}
+
+	if ( !m_flGround )
+	{
+		// set altitude. Now that I'm activated, any breakables, etc should be out from under me. 
+		trace_t tr;
+
+		UTIL_TraceLine ( GetAbsOrigin(), GetAbsOrigin() - Vector ( 0, 0, 2048 ), MASK_NPCSOLID_BRUSHONLY, this, COLLISION_GROUP_NONE, &tr );
+		m_flGround = tr.endpos.z;
+	}
+
+	Vector mins = GetAbsOrigin() - Vector( 34, 34, 0 );
+	Vector maxs = GetAbsOrigin() + Vector( 34, 34, 0 );
+	maxs.z = GetAbsOrigin().z;
+	
+	//Only adjust for the ground if we want it
+	if ( ( m_spawnflags & SF_NPCMAKER_NO_DROP ) == false )
+	{
+		mins.z = m_flGround;
+	}
+
+	CBaseEntity *pList[128];
+	
+	int count = UTIL_EntitiesInBox( pList, 128, mins, maxs, FL_CLIENT|FL_NPC );
+	if ( count )
+	{
+		//Iterate through the list and check the results
+		for ( int i = 0; i < count; i++ )
+		{
+			//Don't build on top of another entity
+			if ( pList[i] == NULL )
+				continue;
+
+			//If one of the entities is solid, then we can't spawn now
+			if ( ( pList[i]->GetSolidFlags() & FSOLID_NOT_SOLID ) == false )
+				return false;
+		}
+	}
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: If this had a finite number of children, return true if they've all
+//			been created.
+//-----------------------------------------------------------------------------
+bool CNPCMaker::IsDepleted()
+{
+	if ( (m_spawnflags & SF_NPCMAKER_INF_CHILD) || m_iMaxNumNPCs > 0 )
+		return false;
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Toggle the spawner's state
+//-----------------------------------------------------------------------------
+void CNPCMaker::Toggle( void )
+{
+	if ( m_bDisabled )
+	{
+		Enable();
+	}
+	else
+	{
+		Disable();
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Start the spawner
+//-----------------------------------------------------------------------------
+void CNPCMaker::Enable( void )
+{
+	// can't be enabled once depleted
+	if ( IsDepleted() )
+		return;
+
+	m_bDisabled = false;
+	SetThink ( &CNPCMaker::MakerThink );
+	SetNextThink( gpGlobals->curtime );
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Stop the spawner
+//-----------------------------------------------------------------------------
+void CNPCMaker::Disable( void )
+{
+	m_bDisabled = true;
+	SetThink ( NULL );
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Input handler that spawns an NPC.
+//-----------------------------------------------------------------------------
+void CNPCMaker::InputSpawnNPC( inputdata_t &inputdata )
+{
+	MakeNPC();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Input hander that starts the spawner
+//-----------------------------------------------------------------------------
+void CNPCMaker::InputEnable( inputdata_t &inputdata )
+{
+	Enable();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Input hander that stops the spawner
+//-----------------------------------------------------------------------------
+void CNPCMaker::InputDisable( inputdata_t &inputdata )
+{
+	Disable();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Input hander that toggles the spawner
+//-----------------------------------------------------------------------------
+void CNPCMaker::InputToggle( inputdata_t &inputdata )
+{
+	Toggle();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Precache the target NPC
+//-----------------------------------------------------------------------------
+void CNPCMaker::Precache( void )
+{
+	BaseClass::Precache();
+	UTIL_PrecacheOther( STRING( m_iszNPCClassname ) );
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Creates the NPC.
+//-----------------------------------------------------------------------------
+void CNPCMaker::MakeNPC( void )
+{
+	if (!CanMakeNPC())
+	{
+		return;
+	}
+
+	CBaseEntity	*pent = (CBaseEntity*)CreateEntityByName( STRING(m_iszNPCClassname) );
+
+	if ( !pent )
+	{
+		Warning("NULL Ent in NPCMaker!\n" );
+		return;
+	}
+	
+	m_OnSpawnNPC.FireOutput( this, this );
+
+	pent->SetLocalOrigin( GetAbsOrigin() );
+	pent->SetLocalAngles( GetAbsAngles() );
+
+	pent->AddSpawnFlags( SF_NPC_FALL_TO_GROUND );
+
+	if ( m_spawnflags & SF_NPCMAKER_FADE )
+	{
+		pent->AddSpawnFlags( SF_NPC_FADE_CORPSE );
+	}
+
+
+	DispatchSpawn( pent );
+	pent->SetOwnerEntity( this );
+
+	m_cLiveChildren++;// count this NPC
+
+	if (!(m_spawnflags & SF_NPCMAKER_INF_CHILD))
+	{
+		m_iMaxNumNPCs--;
+
+		if ( IsDepleted() )
+		{
+			// Disable this forever.  Don't kill it because it still gets death notices
+			SetThink( NULL );
+			SetUse( NULL );
+		}
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Creates a new NPC every so often.
+//-----------------------------------------------------------------------------
+void CNPCMaker::MakerThink ( void )
+{
+	SetNextThink( gpGlobals->curtime + m_flSpawnFrequency );
+
+	MakeNPC();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : *pVictim - 
+//-----------------------------------------------------------------------------
+void CNPCMaker::DeathNotice( CBaseEntity *pVictim )
+{
+	// ok, we've gotten the deathnotice from our child, now clear out its owner if we don't want it to fade.
+	m_cLiveChildren--;
+}