ServerShotHolder.cpp

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D 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 2 of the License, or
//    (at your option) any later version.
//
//    Scorched3D 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.
//
//    You should have received a copy of the GNU General Public License
//    along with Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#include <server/ScorchedServer.h>
#include <server/ServerShotHolder.h>
#include <server/TurnController.h>
#include <tank/TankState.h>
#include <tank/TankScore.h>
#include <tank/TankPosition.h>
#include <tank/TankAccessories.h>
#include <tank/TankContainer.h>
#include <target/TargetLife.h>
#include <tankai/TankAIStrings.h>
#include <engine/ActionController.h>
#include <actions/TankMovement.h>
#include <actions/TankResign.h>
#include <landscapemap/LandscapeMaps.h>
#include <landscapemap/MovementMap.h>
#include <landscapedef/LandscapeDefn.h>
#include <weapons/AccessoryStore.h>
#include <coms/ComsMessageSender.h>
#include <coms/ComsPlayerStatusMessage.h>
#include <common/OptionsScorched.h>
#include <common/OptionsTransient.h>
#include <common/StatsLogger.h>
#include <common/Defines.h>

ServerShotHolder *ServerShotHolder::instance_ = 0;

ServerShotHolder *ServerShotHolder::instance()
{
        if (!instance_)
        {
                instance_ = new ServerShotHolder;
        }
        return instance_;
}

ServerShotHolder::ServerShotHolder()
{
}

ServerShotHolder::~ServerShotHolder()
{
}

void ServerShotHolder::sendWaitingMessage()
{
        // Tell the client who we are currently waiting on
        ComsPlayerStatusMessage statusMessage;
        std::list<unsigned int> &tanks = 
                TurnController::instance()->getPlayersThisTurn();
        std::list<unsigned int>::iterator itor;
        for (itor = tanks.begin();
                 itor != tanks.end();
                 itor++)
        {
                unsigned int playerId = (*itor);
                Tank *tank = 
                        ScorchedServer::instance()->getTankContainer().getTankById(playerId);
                if (tank && tank->getState().getState() == TankState::sNormal)
                {
                        if (!haveShot(tank->getPlayerId())) 
                        {
                                statusMessage.getWaitingPlayers().push_back(playerId);
                        }
                }
        }
        ComsMessageSender::sendToAllPlayingClients(statusMessage, NetInterfaceFlags::fAsync);
}

bool ServerShotHolder::addShot(unsigned int playerId,
        ComsPlayedMoveMessage *message)
{
        // Check the tank exists for this player
        Tank *tank = ScorchedServer::instance()->getTankContainer().getTankById(playerId);
        if (!tank) return false;

        // Check the tank is alive
        if (tank->getState().getState() != TankState::sNormal)
        {
                return false;
        }

        // Validate this message
        if (message->getType() == ComsPlayedMoveMessage::eShot)
        {
                // Check this player can fire this weapon etc...
                if (!validateFiredMessage(ScorchedServer::instance()->getContext(), *message, tank)) return false;
        }

        // Ensure each player can only add one message
        if (haveShot(playerId))
        {
                return false;
        }

        messages_[playerId] = message;
        sendWaitingMessage();

        return true;
}

bool ServerShotHolder::validateFiredMessage(
        ScorchedContext &context, ComsPlayedMoveMessage &message, Tank *tank)
{
        // Check the weapon name exists and is a weapon
        Accessory *accessory = 
                context.getAccessoryStore().findByAccessoryId(
                message.getWeaponId());
        if (accessory && accessory->getType() != AccessoryPart::AccessoryWeapon)
        {
                return false;
        }

        // Check this tank has these weapons
        if (!tank->getAccessories().canUse(accessory)) return false;

        // Check armslevel
        if ((10 - accessory->getArmsLevel()) <=
                context.getOptionsTransient().getArmsLevel() ||
                context.getOptionsGame().getGiveAllWeapons()) {}
        else return false;

        // Check weapons selection parameters
        if (accessory->getPositionSelect() != Accessory::ePositionSelectNone)
        {
                int arenaX = ScorchedServer::instance()->
                        getLandscapeMaps().getDefinitions().getDefn()->getArenaX();
                int arenaY = ScorchedServer::instance()->
                        getLandscapeMaps().getDefinitions().getDefn()->getArenaY();
                int arenaWidth = ScorchedServer::instance()->
                        getLandscapeMaps().getDefinitions().getDefn()->getArenaWidth();
                int arenaHeight = ScorchedServer::instance()->
                        getLandscapeMaps().getDefinitions().getDefn()->getArenaHeight();

                if (message.getSelectPositionX() <= arenaX || message.getSelectPositionX() >= arenaX + arenaWidth &&
                        message.getSelectPositionY() <= arenaY || message.getSelectPositionY() >= arenaY + arenaHeight)
                {
                        return false;
                }

                if (accessory->getPositionSelect() == Accessory::ePositionSelectLimit)
                {
                        FixedVector position(
                                message.getSelectPositionX(), message.getSelectPositionY(), 0);
                        if ((position - tank->getLife().getTargetPosition()).Magnitude() > 
                                accessory->getPositionSelectLimit())
                        {
                                return false;
                        }
                }
                else if (accessory->getPositionSelect() == Accessory::ePositionSelectFuelLimit)
                {
                        MovementMap mmap(
                                tank,
                                ScorchedServer::instance()->getContext());

                        FixedVector position(
                                message.getSelectPositionX(), message.getSelectPositionY(), 0);
                        mmap.calculatePosition(position, fixed(accessory->getPositionSelectLimit()));

                        MovementMap::MovementMapEntry &entry =  mmap.getEntry(
                                message.getSelectPositionX(), message.getSelectPositionY());
                        if (entry.type != MovementMap::eMovement) return false;  // Do nothing
                }
        }

        return true;
}

bool ServerShotHolder::allSkipped()
{
        if (messages_.empty()) return false;

        std::map<unsigned int, ComsPlayedMoveMessage *>::iterator itor;
        for (itor = messages_.begin();
                itor != messages_.end();
                itor++)
        {
                unsigned int playerId = (*itor).first;
                ComsPlayedMoveMessage *message = (*itor).second;
                if (message->getType() != ComsPlayedMoveMessage::eSkip)
                {
                        return false;
                }
        }
        return true;
}

bool ServerShotHolder::haveAllTurnShots()
{
        std::list<unsigned int> &tanks = 
                TurnController::instance()->getPlayersThisTurn();
        std::list<unsigned int>::iterator itor;
        for (itor = tanks.begin();
                itor != tanks.end();
                itor++)
        {
                unsigned int playerId = (*itor);
                Tank *tank = 
                        ScorchedServer::instance()->getTankContainer().getTankById(playerId);
                if (tank && 
                        tank->getState().getState() == TankState::sNormal &&
                        tank->getDestinationId() != 0)
                {
                        if (!haveShot(tank->getPlayerId())) return false;
                }
        }
        return true;
}

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