vcmi/lib/CGameInterface.h

#pragma once


#include "BattleAction.h"
#include "IGameEventsReceiver.h"

/*
 * CGameInterface.h, part of VCMI engine
 *
 * Authors: listed in file AUTHORS in main folder
 *
 * License: GNU General Public License v2.0 or later
 * Full text of license available in license.txt file, in main folder
 *
 */

using namespace boost::logic;
class CCallback;
class CBattleCallback;
class ICallback;
class CGlobalAI;
struct Component;
class CSelectableComponent;
struct TryMoveHero;
class CGHeroInstance;
class CGTownInstance;
class CGObjectInstance;
class CGBlackMarket;
class CGDwelling;
class CCreatureSet;
class CArmedInstance;
class IShipyard;
class IMarket;
struct BattleResult;
struct BattleAttack;
struct BattleStackAttacked;
struct BattleSpellCast;
struct SetStackEffect;
struct Bonus;
struct PackageApplied;
struct SetObjectProperty;
struct CatapultAttack;
struct BattleStacksRemoved;
struct StackLocation;
class CStackInstance;
class CCommanderInstance;
class CStack;
class CCreature;
class CLoadFile;
class CSaveFile;
template <typename Serializer> class CISer;
template <typename Serializer> class COSer;
struct ArtifactLocation;
class CScriptingModule;
class CAutomationModule;
class CClient;
class CAutomationCallback;

struct ObjectsCeded
{
	std::vector<const CGObjectInstance *> objects;

	bool hasObject(const CGObjectInstance *obj) const
	{
		return vstd::contains(objects, obj);
	}
	void remove(const CGObjectInstance *obj)
	{
		auto it = range::find(objects, obj);
		if(it != objects.end())
			objects.erase(it);
	}
	void add(const CGObjectInstance *obj)
	{
		objects.push_back(obj);
	}
};

struct DLL_LINKAGE Priorities
{
	double manaValue;
	double generalResourceValueModifier;
	std::vector<double> resourceTypeBaseValues;
	std::function<double(const CStack *)> stackEvaluator;


	Priorities();
};

class DLL_LINKAGE CBattleGameInterface : public IBattleEventsReceiver
{
public:
	bool human;
	PlayerColor playerID;
	std::string dllName;

	virtual ~CBattleGameInterface() {};
	virtual void init(shared_ptr<CBattleCallback> CB){};

	//battle call-ins
	virtual BattleAction activeStack(const CStack * stack)=0; //called when it's turn of that stack
	virtual void yourTacticPhase(int distance){}; //called when interface has opportunity to use Tactics skill -> use cb->battleMakeTacticAction from this function
	virtual void setPriorities(const Priorities &priorities){}

	virtual void saveGame(COSer<CSaveFile> &h, const int version);
	virtual void loadGame(CISer<CLoadFile> &h, const int version);

};

/// Central class for managing human player / AI interface logic
class CGameInterface : public CBattleGameInterface, public IGameEventsReceiver
{
public:
	virtual void init(shared_ptr<CCallback> CB){};
	virtual void yourTurn(){}; //called AFTER playerStartsTurn(player)
	virtual void receiveMessageFromAutomation(const boost::any &msg){}

	//pskill is gained primary skill, interface has to choose one of given skills and call callback with selection id
	virtual void heroGotLevel(const CGHeroInstance *hero, PrimarySkill::PrimarySkill pskill, std::vector<SecondarySkill> &skills, QueryID queryID)=0;
	virtual	void commanderGotLevel (const CCommanderInstance * commander, std::vector<ui32> skills, QueryID queryID)=0;

	// Show a dialog, player must take decision. If selection then he has to choose between one of given components,
	// if cancel he is allowed to not choose. After making choice, CCallback::selectionMade should be called
	// with number of selected component (1 - n) or 0 for cancel (if allowed) and askID.
	virtual void showBlockingDialog(const std::string &text, const std::vector<Component> &components, QueryID askID, const int soundID, bool selection, bool cancel) = 0;

	// all stacks operations between these objects become allowed, interface has to call onEnd when done
	virtual void showGarrisonDialog(const CArmedInstance *up, const CGHeroInstance *down, bool removableUnits, QueryID queryID) = 0;
	virtual void finish(){}; //if for some reason we want to end
};

class DLL_LINKAGE CDynLibHandler
{
public:
	static shared_ptr<CGlobalAI> getNewAI(std::string dllname);
	static shared_ptr<CBattleGameInterface> getNewBattleAI(std::string dllname);
	static shared_ptr<CScriptingModule> getNewScriptingModule(std::string dllname);
	static shared_ptr<CAutomationModule> getNewAutomationModule(std::string dllname);
};

class DLL_LINKAGE CGlobalAI : public CGameInterface // AI class (to derivate)
{
public:
	CGlobalAI();
	virtual BattleAction activeStack(const CStack * stack) OVERRIDE;
};

//class to  be inherited by adventure-only AIs, it cedes battle actions to given battle-AI
class DLL_LINKAGE CAdventureAI : public CGlobalAI
{
public:
	CAdventureAI() {};

	shared_ptr<CBattleGameInterface> battleAI;
	shared_ptr<CBattleCallback> cbc;

	virtual std::string getBattleAIName() const = 0; //has to return name of the battle AI to be used

	//battle interface
	virtual BattleAction activeStack(const CStack * stack);
	virtual void yourTacticPhase(int distance);
	virtual void battleNewRound(int round);
	virtual void battleCatapultAttacked(const CatapultAttack & ca);
	virtual void battleStart(const CCreatureSet *army1, const CCreatureSet *army2, int3 tile, const CGHeroInstance *hero1, const CGHeroInstance *hero2, bool side);
	virtual void battleStacksAttacked(const std::vector<BattleStackAttacked> & bsa);
	virtual void actionStarted(const BattleAction &action);
	virtual void battleNewRoundFirst(int round);
	virtual void actionFinished(const BattleAction &action);
	virtual void battleStacksEffectsSet(const SetStackEffect & sse);
	//virtual void battleTriggerEffect(const BattleTriggerEffect & bte);
	virtual void battleStacksRemoved(const BattleStacksRemoved & bsr);
	virtual void battleObstaclesRemoved(const std::set<si32> & removedObstacles);
	virtual void battleNewStackAppeared(const CStack * stack);
	virtual void battleStackMoved(const CStack * stack, std::vector<BattleHex> dest, int distance);
	virtual void battleAttack(const BattleAttack *ba);
	virtual void battleSpellCast(const BattleSpellCast *sc);
	virtual void battleEnd(const BattleResult *br);
	virtual void battleStacksHealedRes(const std::vector<std::pair<ui32, ui32> > & healedStacks, bool lifeDrain, bool tentHeal, si32 lifeDrainFrom);

	virtual void saveGame(COSer<CSaveFile> &h, const int version); //saving
	virtual void loadGame(CISer<CLoadFile> &h, const int version); //loading
};

class DLL_LINKAGE CAutomationModule : public IGameEventsReceiver
{
	ObjectsCeded receivedObjects;

protected:
	const std::vector<const CGObjectInstance*> &getMyObjects() const;
	std::vector<const CGHeroInstance*> getMyHeroes() const;
	shared_ptr<CAutomationCallback> cb;

public:
	void automationInit(shared_ptr<CAutomationCallback> cb, const ObjectsCeded &objs);


	virtual bool needsWaitingForRealize() const {return true;}
	virtual bool needsUnlockingGs() const {return false;}

	virtual void newObjectReceived(const CGObjectInstance *obj);
	virtual void objectTakenAway(const CGObjectInstance *obj);

	virtual void modulePrepared(){};
	virtual void receivedMessage(const boost::any &msg);
	virtual void executeInternal() = 0;

	void execute();

	friend class CCallback;
};