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/* GameEvent.cpp

Copyright (c) 2014 by Michael Zahniser

Endless Sky is free software: you can redistribute it and/or modify it under the

terms of the GNU General Public License as published by the Free Software

Foundation, either version 3 of the License, or (at your option) any later version.

Endless Sky is distributed in the hope that it will be useful, but WITHOUT ANY

WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A

PARTICULAR PURPOSE. See the GNU General Public License for more details.

*/

#include "GameEvent.h"

#include "DataWriter.h"

#include "GameData.h"

#include "Government.h"

#include "Planet.h"

#include "PlayerInfo.h"

#include "System.h"

#include <set>

#include <string>

using namespace std;

// Construct and Load() at the same time.

GameEvent::GameEvent(const DataNode &node)

{

Load(node);

}

void GameEvent::Load(const DataNode &node)

{

// If the event has a name, a condition should be automatically created that

// represents the fact that this event has occurred.

if(node.Size() >= 2)

{

name = node.Token(1);

conditionsToApply.Add("set", "event: " + name);

}

static const set<string> allowedChanges = {

"fleet",

"galaxy",

"government",

"link",

"outfitter",

"news",

"planet",

"shipyard",

"system",

"unlink"

};

for(const DataNode &child : node)

{

const string &key = child.Token(0);

if(key == "date" && child.Size() >= 4)

date = Date(child.Value(1), child.Value(2), child.Value(3));

else if(key == "unvisit" && child.Size() >= 2)

systemsToUnvisit.push_back(GameData::Systems().Get(child.Token(1)));

else if(key == "visit" && child.Size() >= 2)

systemsToVisit.push_back(GameData::Systems().Get(child.Token(1)));

else if(key == "unvisit planet" && child.Size() >= 2)

planetsToUnvisit.push_back(GameData::Planets().Get(child.Token(1)));

else if(key == "visit planet" && child.Size() >= 2)

planetsToVisit.push_back(GameData::Planets().Get(child.Token(1)));

else if(allowedChanges.count(key))

changes.push_back(child);

else

conditionsToApply.Add(child);

}

}

void GameEvent::Save(DataWriter &out) const

{

out.Write("event");

out.BeginChild();

{

if(date)

out.Write("date", date.Day(), date.Month(), date.Year());

conditionsToApply.Save(out);

for(const System *system : systemsToUnvisit)

if(system && !system->Name().empty())

out.Write("unvisit", system->Name());

for(const Planet *planet : planetsToUnvisit)

if(planet && !planet->Name().empty())

out.Write("unvisit planet", planet->Name());

for(const System *system : systemsToVisit)

if(system && !system->Name().empty())

out.Write("visit", system->Name());

for(const Planet *planet : planetsToVisit)

if(planet && !planet->Name().empty())

out.Write("visit planet", planet->Name());

for(const DataNode &change : changes)

out.Write(change);

}

out.EndChild();

}

const string &GameEvent::Name() const

{

return name;

}

const Date &GameEvent::GetDate() const

{

return date;

}

void GameEvent::SetDate(const Date &date)

{

this->date = date;

}

void GameEvent::Apply(PlayerInfo &player)

{

// Serialize the current reputation with other governments.

player.SetReputationConditions();

// Apply this event's ConditionSet to the player's conditions.

conditionsToApply.Apply(player.Conditions());

// Apply (and store a record of applying) this event's other general

// changes (e.g. updating an outfitter's inventory).

player.AddChanges(changes);

// Update the current reputation with other governments (e.g. this

// event's ConditionSet may have altered some reputations).

player.CheckReputationConditions();

for(const System *system : systemsToUnvisit)

player.Unvisit(system);

for(const Planet *planet : planetsToUnvisit)

player.Unvisit(planet);

// Perform visits after unvisits, as "unvisit <system>"

// will unvisit any planets in that system.

for(const System *system : systemsToVisit)

player.Visit(system);

for(const Planet *planet : planetsToVisit)

player.Visit(planet);

}

const list<DataNode> &GameEvent::Changes() const

{

return changes;

}