#ifndef _INCLUDED_ASW_SPAWN_MANAGER_H
#define _INCLUDED_ASW_SPAWN_MANAGER_H
#ifdef _WIN32
#pragma once
#endif

class CAI_Network;
class CTriggerMultiple;
struct AI_Waypoint_t;

// The spawn manager can spawn aliens and groups of aliens

class ASW_Alien_Class_Entry
{
public:
	ASW_Alien_Class_Entry( const char *szClass, int nHullType ) { m_pszAlienClass = szClass; m_nHullType = nHullType; }

	const char *m_pszAlienClass;
	string_t m_iszAlienClass;
	int m_nHullType;
};

class CASW_Spawn_Manager
{
public:
	CASW_Spawn_Manager();
	~CASW_Spawn_Manager();

	void LevelInitPreEntity();
	void LevelInitPostEntity();
	void Update();
	bool AddHorde( int iHordeSize );			// creates a large pack of aliens somewhere near the marines
	void AddAlien();							// creates a single alien somewhere near the marines

	int SpawnAlienBatch( const char *szAlienClass, int iNumAliens, const Vector &vecPosition, const QAngle &angle, float flMarinesBeyondDist = 0 );	
	CBaseEntity* SpawnAlienAt(const char* szAlienClass, const Vector& vecPos, const QAngle &angle);

	bool ValidSpawnPoint( const Vector &vecPosition, const Vector &vecMins, const Vector &vecMaxs, bool bCheckGround = true, float flMarineNearDistance = 0 );
	bool LineBlockedByGeometry( const Vector &vecSrc, const Vector &vecEnd );
	
	bool GetAlienBounds( const char *szAlienClass, Vector &vecMins, Vector &vecMaxs );
	bool GetAlienBounds( string_t iszAlienClass, Vector &vecMins, Vector &vecMaxs );

	int GetHordeToSpawn() { return m_iHordeToSpawn; }	

	int GetNumAlienClasses();
	ASW_Alien_Class_Entry* GetAlienClass( int i );

private:
	void UpdateCandidateNodes();
	bool FindHordePosition();
	CAI_Network* GetNetwork();
	bool SpawnAlientAtRandomNode();
	void FindEscapeTriggers();
	void DeleteRoute( AI_Waypoint_t *pWaypointList );

	CountdownTimer m_batchInterval;
	Vector m_vecHordePosition;
	QAngle m_angHordeAngle;
	int m_iHordeToSpawn;
	int m_iAliensToSpawn;

	// maintaining a list of possible nodes to spawn aliens from
	CUtlVector<int> m_northCandidateNodes;
	CUtlVector<int> m_southCandidateNodes;
	CountdownTimer m_CandidateUpdateTimer;

	typedef CHandle<CTriggerMultiple> TriggerMultiple_t;
	CUtlVector<TriggerMultiple_t> m_EscapeTriggers;
};

extern const int g_nDroneClassEntry;
extern const int g_nDroneJumperClassEntry;

CASW_Spawn_Manager* ASWSpawnManager();

#endif // _INCLUDED_ASW_SPAWN_MANAGER_H