source-engine/game/missionchooser/asw_spawn_selection.h

//============ Copyright (c) Valve Corporation, All rights reserved. ============
//
// 
//
//===============================================================================
#ifndef ASW_SPAWN_SELECTION_H
#define ASW_SPAWN_SELECTION_H
#ifdef _WIN32
#pragma once
#endif

#include "missionchooser/iasw_spawn_selection.h"
#include "utlvector.h"
#include "KeyValues.h"


class CASW_Entry : public IASWSpawnDefinitionEntry			
{
public:

	// Implementation of the IASWSpawnDefinitionEntry Interface.
	virtual const char *GetNPCClassname() { return m_pszAlienClass; }
	virtual void GetSpawnCountRange( int &nMin, int &nMax ) { nMin = m_nMinPerSpawn; nMax = m_nMaxPerSpawn; }
	virtual float GetEliteNPCChance( void ) { return m_flEliteChance; }
	virtual bool UseSpawners() { return m_bUseSpawners; }

public:

	CASW_Entry()
	{
		m_pszAlienClass = NULL;
		m_nMinPerSpawn = 1; 
		m_nMaxPerSpawn = 1;
		m_flEliteChance = 0;
		m_bUseSpawners = false;
	}

	char* m_pszAlienClass;
	int m_nMinPerSpawn;
	int m_nMaxPerSpawn;
	float m_flEliteChance;
	bool m_bUseSpawners;
};


//=============================================================================
//
// Data describing a particular alien spawn (can be one or more aliens of various classes)
//
class CASW_Spawn_Definition : public IASWSpawnDefinition
{
public:

	// Implementation of the IASWSpawnDefinition Interface.
	virtual int GetEntryCount()	{ return m_Entries.Count(); }
	virtual IASWSpawnDefinitionEntry *GetEntry( int nEntry ) { Assert( nEntry >= 0 && nEntry < m_Entries.Count() ); return m_Entries[nEntry]; }
	virtual int GetID() { return m_nID; }

public:

	CASW_Spawn_Definition( int nID );
	~CASW_Spawn_Definition();

	void LoadFromKeyValues( KeyValues *pKeys );

	float GetSelectionWeight() { return m_flSelectionWeight; }
	bool ContainsAlienClass( const char *szAlienClass );

	void ListSpawnDef();
	
private:

	float m_flSelectionWeight;
	CUtlVector<CASW_Entry*> m_Entries;
	int m_nID;
};


//=============================================================================
//
// Holds spawn definitions for all types of spawning within an area (typically a whole mission)
//
class CASW_Spawn_Set
{
public:

	CASW_Spawn_Set();
	~CASW_Spawn_Set();

	// this function returns a random wanderer/horde/boss
	CASW_Spawn_Definition* GetSpawnDef( int nType );
	CASW_Spawn_Definition* GetSpawnDefByID( int nID );

	// chance of spawning a feeder group per 256x256 grid square
	float GetFeederChance() { return m_flFeederChance; }
	const char *GetSetName() { return m_pszSetName; }

	void LoadFromKeyValues( KeyValues *pKeys );

	int GetMinDifficulty() { return m_iMinDifficulty; }
	int GetMaxDifficulty() { return m_iMaxDifficulty; }

	// number of encounters per mission
	int GetMinEncounters() { return m_iMinEncounters; }
	int GetMaxEncounters() { return m_iMaxEncounters; }

	// number of spawndefs in each encounter
	int GetMinSpawnsPerEncounter() { return m_iMinSpawnsPerEncounter; }
	int GetMaxSpawnsPerEncounter() { return m_iMaxSpawnsPerEncounter; }

private:

	CUtlVector<CASW_Spawn_Definition*> m_SpawnDefs[ASW_NPC_SPAWN_TYPE_COUNT];
	float m_flTotalWeight[ASW_NPC_SPAWN_TYPE_COUNT];

	int m_iMinDifficulty;
	int m_iMaxDifficulty;
	float m_flFeederChance;
	int m_iMinEncounters;
	int m_iMaxEncounters;
	int m_iMinSpawnsPerEncounter;
	int m_iMaxSpawnsPerEncounter;
	const char *m_pszSetName;
};

CASW_Spawn_Set *CurrentSpawnSet();

//=============================================================================
//
// Manages loading and setting of spawn sets
//
class CASW_Spawn_Selection : public IASWSpawnSelection
{
public:

	// Implementation of the IASWSpawnSelection Interface.
	IASWSpawnDefinition *GetSpawnDefinition( int nSpawnType )	{ Assert( GetCurrentSpawnSet() ); return GetCurrentSpawnSet()->GetSpawnDef( nSpawnType ); }
	CASW_Spawn_Definition* GetSpawnDefByID( int nID );

	bool IsAvailableNPC( const char *szName );
	virtual void SetCurrentSpawnSet( int iMissionDifficulty );		// sets spawn set based on the difficulty passed in
	virtual bool SetCurrentSpawnSet( const char *szSetName );		// sets spawn set by name
	virtual void DumpCurrentSpawnSet();

public:

	// Construction/Destruction.
	CASW_Spawn_Selection();
	~CASW_Spawn_Selection();
	void Init();

	void SetCurrentSpawnSet( CASW_Spawn_Set* pSet ) { m_pCurrentSpawnSet = pSet; }
	CASW_Spawn_Set *GetCurrentSpawnSet() { return m_pCurrentSpawnSet; }
	CASW_Spawn_Set *GetSpawnSet( const char *szSetName );

private:

	void LoadSpawnSets();
	void Reset();

private:

	CUtlVector<CASW_Spawn_Set*> m_SpawnSets;
	CASW_Spawn_Set *m_pCurrentSpawnSet;
	KeyValues *m_pSpawnSetKeys;
};

int SpawnTypeFromString( const char *szText );

#endif // ASW_SPAWN_SELECTION_H