Added code for generating and using champion points, and for recalculating them from scratch in the admin panel. Now just need to add them to the scoreboard and the leadboard pages...

1 files changed, 180 insertions, 0 deletions

diff --git a/includes/championPoints.php b/includes/championPoints.php
new file mode 100644
index 0000000..e824c0c
--- /dev/null
+++ b/includes/championPoints.php
@@ -0,0 +1,180 @@
+<?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 =
+	(
+		SELECT 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.") 
+		FROM mapOfTheDay
+		INNER JOIN (SELECT * FROM solutions) AS usersSolutions ON usersSolutions.mapID = mapOfTheDay.mapID
+		WHERE usersSolutions.ID = solutions.ID
+		AND mapOfTheDay.mapType = 5
+	);
+	";
+	
+	$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!
+}
+?>