From 5c1454c0460efebb78d57ea7bec39e130c2f50c2 Mon Sep 17 00:00:00 2001
From: Sverre Rabbelier <sverre@rabbelier.nl>
Date: Sat, 26 Jan 2008 19:36:57 +0100
Subject: [PATCH] Added comments and handling of selecting a card

---
 4DMemory/Playground.cs | 38 +++++++++++++++++++++++++++++++-------
 1 file changed, 31 insertions(+), 7 deletions(-)

diff --git a/4DMemory/Playground.cs b/4DMemory/Playground.cs
index 4227a6e..8cde8f1 100644
--- a/4DMemory/Playground.cs
+++ b/4DMemory/Playground.cs
@@ -9,8 +9,10 @@ namespace Memory
     class Playground
     {
         private PlayerIndex m_currentPlayer;
-        private bool m_isFirstCardOfPair;
+        private Card m_currentCard;
+
         private CardsGrid m_cardsGrid;
+
         private Random m_random;
 
         private static int m_dimension = 10;
@@ -20,7 +22,7 @@ namespace Memory
         public Playground()
         {
             m_currentPlayer = PlayerIndex.One;
-            m_isFirstCardOfPair = true;
+            m_currentCard = null;
             m_random = new Random();
 
             FillField();
@@ -40,18 +42,40 @@ namespace Memory
         //      The player that gets to select a card next
         public PlayerIndex SelectCard(int xpos, int ypos, int zpos)
         {
-            if (m_isFirstCardOfPair)
+            Card pickedCard = m_cardsGrid.getCard(xpos, ypos, zpos);
+
+            if (m_currentCard == null)
             {
+                m_currentCard = pickedCard;
                 return m_currentPlayer;
             }
             else
             {
-                int player = (int)m_currentPlayer;
-                int nextplayer = (player % 4) + 1;
-                m_currentPlayer = (PlayerIndex)nextplayer;
-                return m_currentPlayer;
+                if (m_currentCard.Equals(pickedCard))
+                {
+                    // !! Player selected the correct card
+                    return m_currentPlayer;
+                }
+                else
+                {
+                    // !! Player selected the wrong card
+                    return GetNextPlayer();
+                }
             }
         }
+        
+        // Summary:
+        //      Finds the next player and returns it
+        //
+        // Returns:
+        //      The next player
+        private PlayerIndex GetNextPlayer()
+        {
+            int player = (int)m_currentPlayer;
+            int nextplayer = (player % 4) + 1;
+            m_currentPlayer = (PlayerIndex)nextplayer;
+            return m_currentPlayer;
+        }
 
         // Summary:
         //      Initializes all the cards
-- 
2.11.4.GIT