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rsmove.php
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<?php
// Blacknova Traders - A web-based massively multiplayer space combat and trading game
// Copyright (C) 2001-2014 Ron Harwood and the BNT development team
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// File: rsmove.php
// External variables: $destination (from get or post), int, range 1 - $bntreg->sector_max)
// $engage (from get), int, range 0 - 2)
require_once './common.php';
Bnt\Login::checkLogin($pdo_db, $lang, $langvars, $bntreg, $template);
// Database driven language entries
$langvars = Bnt\Translate::load($pdo_db, $lang, array('rsmove', 'common', 'global_funcs', 'global_includes', 'combat', 'footer', 'news', 'regional'));
$title = $langvars['l_rs_title'];
Bnt\Header::display($pdo_db, $lang, $template, $title);
// Get the players information.
$res = $db->Execute("SELECT * FROM {$db->prefix}ships WHERE email = ?;", array($_SESSION['username']));
Bnt\Db::logDbErrors($db, $res, __LINE__, __FILE__);
$playerinfo = $res->fields;
echo "<h1>" . $title . "</h1>\n";
// Returns null if it doesn't have it set, boolean false if its set but fails to validate and the actual value if it all passes.
$destination = filter_input(INPUT_GET, 'destination', FILTER_VALIDATE_INT, array('options' => array('min_range' => 1, 'max_range' => $bntreg->sector_max)));
if ( is_null($destination))
{
$destination = filter_input(INPUT_POST, 'destination', FILTER_VALIDATE_INT, array('options' => array('min_range' => 1, 'max_range' => $bntreg->sector_max)));
}
$engage = filter_input(INPUT_GET, 'engage', FILTER_VALIDATE_INT, array('options' => array('min_range' => 0, 'max_range' => 2)));
if ($destination === false || $engage === false)
{
// Either the destination or the engage variables have failed validation. Output:
// Invalid destination
echo $langvars['l_rs_invalid'] . ".<br><br>";
$resx = $db->Execute("UPDATE {$db->prefix}ships SET cleared_defences=' ' WHERE ship_id = ?;", array($playerinfo['ship_id']));
Bnt\Db::logDbErrors($db, $resx, __LINE__, __FILE__);
}
else
{
// Check if we haven't been sent the destination.
if (is_null($destination) === true)
{
// Nope, the destination was not sent, so show a web form asking for a destination.
// Output:
// <form accept-charset='utf-8' action='rsmove.php' method='post'>
// You are presently in sector X - and there are sectors available from 1 to Y.
// Which sector would you like to reach through real space? : <input type='text' name='destination' size='10' maxlength='10'>
// <input type='submit' value='Compute'>
// </form>
echo "<form accept-charset='utf-8' action='rsmove.php' method='post'>\n";
$langvars['l_rs_insector'] = str_replace("[sector]", $playerinfo['sector'], $langvars['l_rs_insector']);
$langvars['l_rs_insector'] = str_replace("[sector_max]", $bntreg->sector_max - 1, $langvars['l_rs_insector']);
echo $langvars['l_rs_insector'] . "<br><br>\n";
echo $langvars['l_rs_whichsector'] . ": <input type='text' name='destination' size='10' maxlength='10'><br><br>\n";
echo "<input type='submit' value='" . $langvars['l_rs_submit'] . "'><br><br>\n";
echo "</form>\n";
}
else
{
// Ok, we have been given the destination value.
// Get the players current sector information.
$result2 = $db->Execute("SELECT angle1, angle2, distance FROM {$db->prefix}universe WHERE sector_id = ?;", array($playerinfo['sector']));
Bnt\Db::logDbErrors($db, $result2, __LINE__, __FILE__);
$start = $result2->fields;
// Get the destination sector information.
$result3 = $db->Execute("SELECT angle1, angle2, distance FROM {$db->prefix}universe WHERE sector_id = ?;", array($destination));
Bnt\Db::logDbErrors($db, $result3, __LINE__, __FILE__);
$finish = $result3->fields;
// Calculate the distance.
$deg = pi() / 180;
$sa1 = $start['angle1'] * $deg;
$sa2 = $start['angle2'] * $deg;
$fa1 = $finish['angle1'] * $deg;
$fa2 = $finish['angle2'] * $deg;
$x = ($start['distance'] * sin($sa1) * cos($sa2)) - ($finish['distance'] * sin($fa1) * cos($fa2));
$y = ($start['distance'] * sin($sa1) * sin($sa2)) - ($finish['distance'] * sin($fa1) * sin($fa2));
$z = ($start['distance'] * cos($sa1)) - ($finish['distance'] * cos($fa1));
$distance = round(sqrt(pow($x, 2) + pow($y, 2)+pow($z, 2)));
// Calculate the speed of the ship.
$shipspeed = pow($bntreg->level_factor, $playerinfo['engines']);
// Calculate the trip time.
$triptime = round($distance / $shipspeed);
if ($destination == $playerinfo['sector'])
{
$triptime = 0;
$energyscooped = 0;
}
elseif ($triptime == 0 && $destination != $playerinfo['sector'])
{
$triptime = 1;
}
// Check to see if engage isn't set or if triptime is larger than 100 and engage is set to 1
if (is_null($engage) || ($triptime > 100 && $engage == 1))
{
// Calculate the amount of fuel that was scooped during transit
$energyscooped = Bnt\Move::calcFuelScooped($playerinfo, $distance, $triptime, $bntreg);
// Output:
// With your engines, it will take X turns to complete the journey.
// You would gather Y units of energy.
$langvars['l_rs_movetime'] = str_replace("[triptime]", number_format($triptime, 0, $langvars['local_number_dec_point'], $langvars['local_number_thousands_sep']), $langvars['l_rs_movetime']);
$langvars['l_rs_energy'] = str_replace("[energy]", number_format($energyscooped, 0, $langvars['local_number_dec_point'], $langvars['local_number_thousands_sep']), $langvars['l_rs_energy']);
echo $langvars['l_rs_movetime'] . "<br>" . $langvars['l_rs_energy'] . "<br><br>";
if ($triptime > $playerinfo['turns'])
{
// Player doesn't have enough turns. Output:
// You do not have enough turns left, and cannot embark on this journey.
echo $langvars['l_rs_noturns'];
}
else
{
// Player has enough turns.
// Output:
// You have X turns. <a href=rsmove.php?engage=2&destination=$destination>Engage</a> engines?
$langvars['l_rs_engage_link'] = "<a href=rsmove.php?engage=2&destination=$destination>" . $langvars['l_rs_engage_link'] . "</a>";
$langvars['l_rs_engage'] = str_replace("[turns]", number_format($playerinfo['turns'], 0, $langvars['local_number_dec_point'], $langvars['local_number_thousands_sep']), $langvars['l_rs_engage']);
$langvars['l_rs_engage'] = str_replace("[engage]", $langvars['l_rs_engage_link'], $langvars['l_rs_engage']);
echo $langvars['l_rs_engage'] . "<br><br>";
}
}
elseif ($engage > 0)
{
// Calculate the amount of fuel that was scooped during transit
$energyscooped = Bnt\Move::calcFuelScooped($playerinfo, $distance, $triptime, $bntreg);
if ($triptime > $playerinfo['turns'])
{
// Output:
// With your engines, it will take X turns to complete the journey.
// You do not have enough turns left, and cannot embark on this journey.
$langvars['l_rs_movetime'] = str_replace("[triptime]", number_format($triptime, 0, $langvars['local_number_dec_point'], $langvars['local_number_thousands_sep']), $langvars['l_rs_movetime']);
echo $langvars['l_rs_movetime'] . "<br><br>";
echo $langvars['l_rs_noturns'] . "<br><br>";
$resx = $db->Execute("UPDATE {$db->prefix}ships SET cleared_defences=' ' WHERE ship_id = ?;", array($playerinfo['ship_id']));
Bnt\Db::logDbErrors($db, $resx, __LINE__, __FILE__);
}
else
{
$ok=1;
$sector = $destination;
$calledfrom = "rsmove.php";
include_once './check_fighters.php';
if ($ok > 0)
{
// Output:
// You are now in sector X. You used Y turns, and gained Z energy units.
$langvars = Bnt\Translate::load($pdo_db, $lang, array('rsmove', 'common', 'global_funcs', 'global_includes', 'combat', 'footer', 'news'));
$stamp = date("Y-m-d H:i:s");
$update = $db->Execute("UPDATE {$db->prefix}ships SET last_login = ?, sector = ?, ship_energy = ship_energy + ?, turns = turns - ?, turns_used = turns_used + ? WHERE ship_id = ?;", array($stamp, $destination, $energyscooped, $triptime, $triptime, $playerinfo['ship_id']));
Bnt\Db::logDbErrors($db, $update, __LINE__, __FILE__);
Bnt\LogMove::writeLog($db, $playerinfo['ship_id'], $destination);
$langvars['l_rs_ready'] = str_replace("[sector]", $destination, $langvars['l_rs_ready']);
$langvars['l_rs_ready'] = str_replace("[triptime]", number_format($triptime, 0, $langvars['local_number_dec_point'], $langvars['local_number_thousands_sep']), $langvars['l_rs_ready']);
$langvars['l_rs_ready'] = str_replace("[energy]", number_format($energyscooped, 0, $langvars['local_number_dec_point'], $langvars['local_number_thousands_sep']), $langvars['l_rs_ready']);
echo $langvars['l_rs_ready'] . "<br><br>";
include_once './check_mines.php';
}
}
}
}
}
Bnt\Text::gotoMain($db, $lang, $langvars);
Bnt\Footer::display($pdo_db, $lang, $bntreg, $template);
?>