cursor->marked.

lib/cursor.c

@@ -22,6 +22,7 @@ void initialize_cursor(struct cursor *cursor) {
   cursor->window = newwin(0, 0, cursor->y, cursor->x);
   cursor->x = CURSOR_BEGIN_X;
   cursor->y = CURSOR_BEGIN_Y;
+  cursor->marked = false;
 }
 
 void free_cursor(struct cursor *cursor) {
@@ -31,6 +32,14 @@ void free_cursor(struct cursor *cursor) {
   free(cursor);
 }
 
+void mark_cursor(struct cursor *cursor) {
+  cursor->marked = true;
+}
+
+void unmark_cursor(struct cursor *cursor) {
+  cursor->marked = false;
+}
+
 void move_cursor(struct cursor *cursor, enum movement movement) {
   switch (movement) {
   case LEFT:

lib/cursor.h

@@ -28,6 +28,7 @@ struct cursor {
   WINDOW *window;
   int x;
   int y;
+  bool marked;
 };
 
 enum movement { LEFT, DOWN, UP, RIGHT };
@@ -37,6 +38,8 @@ extern struct deck *deck;
 void allocate_cursor(struct cursor **);
 void initialize_cursor(struct cursor *);
 void free_cursor(struct cursor *);
+void mark_cursor(struct cursor *);
+void unmark_cursor(struct cursor *);
 void move_cursor(struct cursor *, enum movement);
 
 #endif

lib/display.c

@@ -144,7 +144,11 @@ void draw_deck(struct deck *deck) {
 }
 
 void draw_cursor(struct cursor *cursor) {
+  if (cursor->marked) {
+    mvwaddch(cursor->window, cursor->y, cursor->x, '@');
+  } else {
     mvwaddch(cursor->window, cursor->y, cursor->x, '*');
+  }
   wrefresh(cursor->window);
 }