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--- notes:discrete:fall2023:projects:cgf0 [2023/09/10 21:07] – created wedge
+++ notes:discrete:fall2023:projects:cgf0 [2023/10/05 02:09] (current) – [SUITES] cfoster8
@@ Line 5: / Line 5: @@
 ====VALUES====
+A standard deck of playing cards has 52 cards from each of the four suits.
+There are 13 cards in each suit: Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, and King, from lowest to highest value, and then it loops around.
 ====SUITES====
+The four suits in a standard deck include hearts, diamonds, spades, and clubs. Spades and clubs are black colored cards, and hearts and diamonds are red. These make up the sub-classes of card types, beyond just their face value.
+===Structure For Doubly Linked List===
+A doubly linked list offers us the option to move both backward and forwards in a list. This is done by adding a pointer to the previous node. Here is an example of a structure of a doubly linked list:
+<code C>
+struct cardnode
+{
+    bool Active;
+    int cardID;         // Card id to call for displaying
+    cardnode* next;    // Pointer to the next card node
+    cardnode* prev;    // Pointer to the previous card node
+};
+</code>
+We originally had just a pointer next for a single linked list but now we have added a pointer for prev.
+===Creating a Doubly-linked List===
+To create our doubly-linked list, we'll undergo a similar process to how we handled our singly-linked list in ttb1. First, we create the first node in our list, then we append onto it.
+Creating the first node of the doubly-linked list is almost identical to our previous projects. The only change is that we need to set ''current->prev'' (our pointer to the currently selected node on the list) to ''NULL''. Since this is the first node in our list, ''current->prev'' will always be equal to ''NULL''.
+Adding additional nodes is where it gets more complicated. Before allocating the memory for the next node and moving the current pointer, we'll need to create a temporary pointer (called ''temp'' in these examples). This will be used to link up ''current->prev'' once we move past the first node. With ''temp'' created, the general order you'll want to follow is:
+  - Set temp equal to the current pointer
+  - Allocate the structure memory into ''current->next''.
+  - Move the current pointer to the next node.
+  - Use ''temp'' to link back up to ''current->prev''.
+  - Set ''current->next'' to ''NULL''.
+  - Free the memory of ''temp''.
+To create additional nodes, just repeat these steps.
+===Setting Up Buttons===
+To use a keyboard and take input you first need to call the following inside your main function but outside your game loop:
+<code C>
+select_gamepad(0);
+</code>
+If you want to set up two buttons, one for moving forward in a deck and one for moving backwards then use the following line:
+<code C>
+// Buttons to go back and forth between deck
+bool nextcard = (gamepad_button_a() == 1);
+bool prevcard = (gamepad_button_b() == 1);
+</code>
+To use button "a" press X and to use button "b" press Z.
+By adding these two lines you now have set up your buttons but now need to add some if statements for when they are pressed.
+Here is an example of an if statement using button "nextcard":
+<code C>
+if (nextcard)
+{
+    // Next card in the deck is displayed
+}
+</code>
+If button "a" is clicked then the next card in the deck is displayed.
+Alternatively, you can use the arrow keys to do the same thing, reading XDirection or YDirection respectively in place of "a" or "b".
+==Randomizing Your Deck==
+To randomize your deck you can use arrays.
+<code C>
+int array[a]
+for (int i = 0; i < a; i++) {
+     array[i] = i;
+     }
+for (int i = 0; i < a; i++) {
+     int temp = array[i];
+     int randomIndex = rand() % 13;
+     array[i] = array[randomIndex];
+     array[randomIndex] = temp;
+}
+</code>

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