First TwoPlayerTrueSkillCalculator unit test passed

PHPSkills/GameInfo.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace Moserware\Skills;
+
+require_once(dirname(__FILE__) . "/Rating.php");
+
+
+/**
+ * Parameters about the game for calculating the TrueSkill.
+ */
+class GameInfo
+{
+    const DEFAULT_BETA = 4.1666666666666666666666666666667; // Default initial mean / 6
+    const DEFAULT_DRAW_PROBABILITY = 0.10;
+    const DEFAULT_DYNAMICS_FACTOR = 0.083333333333333333333333333333333; // Default initial mean / 300
+    const DEFAULT_INITIAL_MEAN = 25.0;
+    const DEFAULT_INITIAL_STANDARD_DEVIATION = 8.3333333333333333333333333333333; // Default initial mean / 3
+
+    private $_initialMean;
+    private $_initialStandardDeviation;
+    private $_beta;
+    private $_dynamicsFactor;
+    private $_drawProbability;    
+    
+    public function __construct($initialMean = self::DEFAULT_INITIAL_MEAN, 
+                                $initialStandardDeviation = self::DEFAULT_INITIAL_STANDARD_DEVIATION, 
+                                $beta = self::DEFAULT_BETA, 
+                                $dynamicsFactor = self::DEFAULT_DYNAMICS_FACTOR, 
+                                $drawProbability = self::DEFAULT_DRAW_PROBABILITY)
+    {
+        $this->_initialMean = $initialMean;
+        $this->_initialStandardDeviation = $initialStandardDeviation;
+        $this->_beta = $beta;
+        $this->_dynamicsFactor = $dynamicsFactor;
+        $this->_drawProbability = $drawProbability;
+    }   
+    
+
+    public function getInitialMean()
+    { 
+        return $this->_initialMean;
+    }
+    
+    public function getInitialStandardDeviation()
+    {
+        return $this->_initialStandardDeviation;
+    }
+    
+    public function getBeta()
+    {
+        return $this->_beta;
+    }
+
+    public function getDynamicsFactor()
+    {
+        return $this->_dynamicsFactor;
+    }
+    
+    public function getDrawProbability()
+    {
+        return $this->_drawProbability;
+    }
+
+    public function getDefaultRating()
+    {
+        return new Rating($this->_initialMean, $this->_initialStandardDeviation);
+    }
+}
+
+?>