Erasing stacks when empty. Also moved some event-related code to the keyboard object.

lib/cursor.c

@@ -1,7 +1,5 @@
 #include <ncurses.h>
 #include <malloc.h>
-#include "stack.h"
-#include "deck.h"
 #include "display.h"
 #include "game.h"
 #include "cursor.h"

lib/cursor.h

@@ -2,6 +2,7 @@
 #define CURSOR_H
 
 #include <stdbool.h>
+#include "deck.h"
 
 #define CURSOR_STARTING_X 4
 #define CURSOR_STARTING_Y 7

lib/display.c

@@ -46,6 +46,22 @@ char *card_value(enum value value) {
   return(card_value);
 }
 
+void erase_stack(struct stack *stack) {
+  WINDOW *empty_stack = NULL;
+
+  wbkgd(stack->card->frame->shape, WHITE_ON_GREEN);
+  wrefresh(stack->card->frame->shape);
+  empty_stack = newwin(FRAME_HEIGHT,
+                       FRAME_WIDTH,
+                       stack->card->frame->start_y,
+                       stack->card->frame->start_x);
+  box(empty_stack, 0, 0);
+  wrefresh(empty_stack);
+  delwin(empty_stack);
+
+  return;
+}
+
 void draw_empty_stacks() {
   WINDOW **empty_stack;
 

lib/display.h

@@ -13,9 +13,11 @@
 #define BLACK_ON_WHITE 1
 #define RED_ON_WHITE   2
 #define WHITE_ON_BLUE  3
+#define WHITE_ON_GREEN 4
 
 char *card_suit(enum suit);
 char *card_value(enum value);
+void erase_stack(struct stack *);
 void draw_empty_stacks();
 void draw_value(struct card *);
 void draw_suit(struct card *);

lib/game.c

@@ -220,14 +220,3 @@ void end_game(struct deck *deck) {
 
   return;
 }
-
-void handle_stock_event() {
-  if (!empty(deck->stock)) {
-    move_card(&(deck->stock), &(deck->waste_pile));
-    expose_card(deck->waste_pile->card);
-    draw_stack(deck->stock);
-    draw_stack(deck->waste_pile);
-  }
-
-  return;
-}

lib/game.h

@@ -36,6 +36,5 @@ void greet_player();
 void initialize_game();
 void prepare_game(struct deck **);
 void end_game();
-void handle_stock_event();
 
 #endif

lib/keyboard.c

@@ -1,6 +1,22 @@
 #include <stdio.h>
+#include "display.h"
 #include "keyboard.h"
 
+void handle_stock_event() {
+  if (!empty(deck->stock)) {
+    /* erase the stack before emptying it */
+    if (length(deck->stock) == 1) {
+      erase_stack(deck->stock);
+    }
+    move_card(&(deck->stock), &(deck->waste_pile));
+    expose_card(deck->waste_pile->card);
+    draw_stack(deck->stock);
+    draw_stack(deck->waste_pile);
+  }
+
+  return;
+}
+
 int key_event() {
   int pressed_key;
 

lib/keyboard.h

@@ -1,8 +1,13 @@
 #ifndef KEYBOARD_H
 #define KEYBOARD_H
 
+#include "deck.h"
+
 #define KEY_SPACEBAR ' '
 
+extern struct deck *deck;
+
+void handle_stock_event();
 int key_event();
 
 #endif

lib/stack.c

@@ -1,6 +1,7 @@
 #include <malloc.h>
 #include <stdbool.h>
 #include "stack.h"
+#include "game.h"
 
 void allocate_stack(struct stack **stack) {
   *stack = malloc(sizeof(**stack));
@@ -79,7 +80,12 @@ struct stack *pop(struct stack **stack) {
 }
 
 bool maneuvre_stack(struct stack *stack) {
-  return(stack->card->frame->start_y >= MANEUVRE_STACKS_START_Y);
+  return(stack->card->frame->start_y >= MANEUVRE_STACKS_STARTING_Y);
+}
+
+bool waste_pile_stack(struct stack *stack) {
+  return((stack->card->frame->start_x == WASTE_PILE_STARTING_X) &&
+         (stack->card->frame->start_y == WASTE_PILE_STARTING_Y));
 }
 
 void refresh_card_coordinates(struct stack *origin, struct stack *destination) {

lib/stack.h

@@ -3,7 +3,7 @@
 
 #include "card.h"
 
-#define MANEUVRE_STACKS_START_Y 7
+#define MANEUVRE_STACKS_STARTING_Y 7
 
 struct stack {
   struct card  *card;
@@ -18,6 +18,7 @@ int length(struct stack *);
 void push(struct stack **, struct card *);
 struct stack *pop(struct stack **);
 bool maneuvre_stack(struct stack *);
+bool waste_pile_stack(struct stack *);
 void refresh_card_coordinates(struct stack *, struct stack *);
 void move_card(struct stack **, struct stack **);
 

lib/util.c

@@ -14,6 +14,7 @@ void initialize_curses() {
   init_pair(1, COLOR_BLACK, COLOR_WHITE);
   init_pair(2, COLOR_RED, COLOR_WHITE);
   init_pair(3, COLOR_WHITE, COLOR_BLUE);
+  init_pair(4, COLOR_WHITE, COLOR_GREEN);
 
   return;
 }