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<?php
define('CP_EARLIEST_DATE', '2012-01-01');
define('CP_MIN_WORTH', 10);
define('CP_MAX_WORTH_SIMPLE', 100);
define('CP_MAX_WORTH_NORMAL', 150);
define('CP_MAX_WORTH_COMPLEX', 200);
define('CP_MAX_WORTH_SPECIAL', 200);
define('CP_MAX_WORTH_WEEKLY', 350);
define('CP_MIN_WORTH_WEEKLY', 50);
define('CP_POINTS_FOR_ATTEMPTING', 5);
define('CP_EXTRA_PERCENT_FOR_FIRST', 0.05);
/**
* Calculates the worth of all maps' champion points from after the given date
* @param $fromDate The earliest date to count from. Use SQL date-string format.
* Pass in yesterday's date, for example, to add champion points from yesterday's maps
*/
function calculateMapsChampionPointWorth($fromDate)
{
$fromDate = mysql_escape_string($fromDate);
//We take the worth of the map, multiply by the number of people who tied the high score, then divide by the
//total number of people who attempted the map (minus 1)
$sql = "
UPDATE mapOfTheDay
SET championPointsWorth = GREATEST(".CP_MIN_WORTH.",
(
CASE mapType
WHEN 1 THEN ".CP_MAX_WORTH_SIMPLE."
WHEN 2 THEN ".CP_MAX_WORTH_NORMAL."
WHEN 3 THEN ".CP_MAX_WORTH_COMPLEX."
WHEN 4 THEN ".CP_MAX_WORTH_SPECIAL."
WHEN 5 THEN ".CP_MAX_WORTH_WEEKLY."
ELSE 0
END
) * (
SELECT COUNT(*)
FROM solutions
WHERE solutions.mapID = mapOfTheDay.mapID
AND solutions.moves <
(
SELECT MAX(moves)
FROM solutions AS s2
WHERE s2.mapId = mapOfTheDay.mapID
)
) / (
SELECT GREATEST(COUNT(*)-1, 1)
FROM solutions
WHERE solutions.mapID = mapOfTheDay.mapID
))
WHERE mapDate >= '$fromDate'
";
mysql_query($sql);
}
/**
* Adds the champion points for each player for every day after the given date, but before today.
* Thus, if you're using this to add points from yesterday's maps, this should be done
* after the date has changed.
* @param $fromDate The earliest date to count from. SQL date-string format.
* Pass in yesterday's date, for example, to add champion points from yesterday's maps
*/
function addPlayerChampionPointsForMapsOfTheDay($fromDate)
{
$fromDate = mysql_escape_string($fromDate);
//TODO: How do you know when an ultra-complex map has completed?
//Weird syntax of these queries is necessary due to a bug in MySQL with updating a table and selecting a table
//in the same query. See http://www.xaprb.com/blog/2006/06/23/how-to-select-from-an-update-target-in-mysql/
$sql1 = "
-- Add the points for tying the map
UPDATE solutions
INNER JOIN
(
SELECT mapID, MAX(moves) AS moves
FROM solutions AS s2
GROUP BY mapID
) AS maxMoves ON maxMoves.mapID = solutions.mapID
INNER JOIN mapOfTheDay ON mapOfTheDay.mapID = solutions.mapID
SET solutions.championPointsWorth = mapOfTheDay.championPointsWorth
WHERE mapOfTheDay.mapDate >= '$fromDate'
AND mapOfTheDay.mapType <> 5
AND solutions.moves = maxMoves.moves
";
$sql2 = "
-- Add the extra for being the first to tie the map
UPDATE solutions
SET solutions.championPointsWorth = solutions.championPointsWorth * (1 + ".CP_EXTRA_PERCENT_FOR_FIRST.")
WHERE solutions.ID IN
(
SELECT s2.ID
FROM (SELECT * FROM solutions) AS s2
INNER JOIN mapOfTheDay ON s2.mapID = mapOfTheDay.mapID
WHERE s2.moves =
(
SELECT MAX(moves)
FROM (SELECT * FROM solutions) AS s3
WHERE s3.mapID = mapOfTheDay.mapID
)
AND mapOfTheDay.mapDate >= '$fromDate'
)
";
$sql3 = "
-- Add the points for doing the weekly maps
UPDATE solutions
SET championPointsWorth = championPointsWorth +
(
SELECT IFNULL(SUM(".CP_MAX_WORTH_WEEKLY." *
(
SELECT COUNT(*)
FROM (SELECT * FROM solutions) AS s2
WHERE s2.mapID = mapOfTheDay.mapID
AND s2.moves < usersSolutions.moves
) / (
SELECT GREATEST(COUNT(*)-1, 1)
FROM (SELECT * FROM solutions) AS s2
WHERE s2.mapID = mapOfTheDay.mapID
) + ".CP_MIN_WORTH_WEEKLY."), 0)
FROM mapOfTheDay
INNER JOIN (SELECT * FROM solutions) AS usersSolutions ON usersSolutions.mapID = mapOfTheDay.mapID
WHERE usersSolutions.ID = solutions.ID
AND mapOfTheDay.mapType = 5
AND mapOfTheDay.mapDate >= '$fromDate'
);
";
$sql4 = "
-- Add the points for attempting the map
UPDATE solutions
SET championPointsWorth = ".CP_POINTS_FOR_ATTEMPTING."
WHERE championPointsWorth = 0
AND dateModified >= $fromDate
AND dateModified < CURDATE()
";
//TODO: Points for doing challenges too
//TODO: Is summing the entire table every time slow? If so, we should just add the points instead
$sql5 = "
-- Simply re-sum all the points
UPDATE users
SET championPoints =
(
SELECT SUM(championPointsWorth)
FROM solutions
WHERE solutions.userID = users.ID
)
";
mysql_query($sql1);
mysql_query($sql2);
mysql_query($sql3);
mysql_query($sql4);
mysql_query($sql5);
}
/**
* Calculates the worth of the maps for yesterday, and distributes points for them
*/
function addChampionPointsForYesterdaysMaps()
{
$yesterday = strtotime('-1 day', time());
$yesterdayStr = date('Y-m-d', $yesterday);
calculateMapsChampionPointWorth($yesterdayStr);
addPlayerChampionPointsForMapsOfTheDay($yesterdayStr);
}
/**
* Recalculates all player's total champion points.
* Will probably be extremely slow, so should not be called often!
*/
function recalculateAllPlayersChampionPoints()
{
calculateMapsChampionPointWorth(CP_EARLIEST_DATE);
addPlayerChampionPointsForMapsOfTheDay(CP_EARLIEST_DATE);
//TODO: Champion points for challenges!
}
?>
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