Save and Restore sate of game on exit/run. Popoup menu for reset.

game15.c

@@ -11,8 +11,9 @@
 #define CELL_HEIGHT 8
 #define MOVE_TICKS 5
 #define KEY_STACK_SIZE 16
-#define TOP_RECORD_DIRECTORY "/ext/apps/Games"
-#define TOP_RECORD_FILENAME TOP_RECORD_DIRECTORY "/game15.top"
+#define SAVING_DIRECTORY "/ext/apps/Games"
+#define SAVING_FILENAME SAVING_DIRECTORY "/game15.save"
+#define POPUP_MENU_ITEMS 2
 
 typedef enum {
     DirectionNone,
@@ -22,7 +23,7 @@ typedef enum {
     DirectionRight
 } direction_e;
 
-typedef enum { ScenePlay, SceneWin } scene_e;
+typedef enum { ScenePlay, SceneWin, ScenePopup } scene_e;
 
 typedef struct {
     uint8_t cell_index;
@@ -31,13 +32,24 @@ typedef struct {
     uint8_t move_ticks;
 } moving_cell_t;
 
-static scene_e scene;
-static uint8_t board[16];
-static uint16_t top_record;
-static uint16_t move_count;
-static uint32_t tick_count;
+typedef struct {
+    uint16_t top_record;
+    scene_e scene;
+    uint16_t move_count;
+    uint32_t tick_count;
+    uint8_t board[16];
+} game_state_t;
+
+static game_state_t game_state;
 static NotificationApp* notification;
 static moving_cell_t moving_cell;
+static uint8_t loaded_saving_ticks;
+static uint8_t popup_menu_selected_item;
+
+static const char* popup_menu_strings[] = {
+    "Continue",
+    "Reset"
+};
 
 static uint8_t keys[KEY_STACK_SIZE];
 static uint8_t key_stack_head = 0;
@@ -105,29 +117,32 @@ static int key_stack_push(uint8_t value) {
         return -1;
 }
 
-static void storage_top_record_load() {
+static bool storage_game_state_load() {
     Storage* storage = furi_record_open(RECORD_STORAGE);
     File* file = storage_file_alloc(storage);
 
-    if(storage_file_open(file, TOP_RECORD_FILENAME, FSAM_READ, FSOM_OPEN_EXISTING))
-        storage_file_read(file, &top_record, 2);
+    uint16_t bytes_readed = 0;
+    if(storage_file_open(file, SAVING_FILENAME, FSAM_READ, FSOM_OPEN_EXISTING))
+        bytes_readed = storage_file_read(file, &game_state, sizeof(game_state_t));
     storage_file_close(file);
     storage_file_free(file);
     furi_record_close(RECORD_STORAGE);
+    return bytes_readed == sizeof(game_state_t);
 }
 
-static void storage_top_record_save() {
+static void storage_game_state_save() {
     Storage* storage = furi_record_open(RECORD_STORAGE);
 
-    if(storage_common_stat(storage, TOP_RECORD_DIRECTORY, NULL) == FSE_NOT_EXIST) {
-        if(!storage_simply_mkdir(storage, TOP_RECORD_DIRECTORY)) {
+    if(storage_common_stat(storage, SAVING_DIRECTORY, NULL) == FSE_NOT_EXIST) {
+        if(!storage_simply_mkdir(storage, SAVING_DIRECTORY)) {
             return;
         }
     }
 
     File* file = storage_file_alloc(storage);
-    if(storage_file_open(file, TOP_RECORD_FILENAME, FSAM_WRITE, FSOM_CREATE_ALWAYS))
-        storage_file_write(file, &top_record, 2);
+    if(storage_file_open(file, SAVING_FILENAME, FSAM_WRITE, FSOM_CREATE_ALWAYS)) {
+        storage_file_write(file, &game_state, sizeof(game_state_t));
+    }
     storage_file_close(file);
     storage_file_free(file);
     furi_record_close(RECORD_STORAGE);
@@ -138,7 +153,7 @@ static void set_moving_cell_by_direction(direction_e direction) {
     moving_cell.zero_index = 0xff;
 
     for(int i = 0; i < 16; i++) {
-        if(!board[i]) {
+        if(!game_state.board[i]) {
             moving_cell.zero_index = i;
             break;
         }
@@ -168,51 +183,52 @@ static void set_moving_cell_by_direction(direction_e direction) {
 static bool is_board_has_solution() {
     uint8_t i, j, inv = 0;
     for(i = 0; i < 16; ++i)
-        if(board[i])
+        if(game_state.board[i])
             for(j = 0; j < i; ++j)
-                if(board[j] > board[i]) ++inv;
+                if(game_state.board[j] > game_state.board[i]) ++inv;
     for(i = 0; i < 16; ++i)
-        if(board[i] == 0) inv += 1 + i / 4;
+        if(game_state.board[i] == 0) inv += 1 + i / 4;
 
     return inv % 2 == 0;
 }
 
 static void board_init() {
     for(int i = 0; i < 16; i++) {
-        board[i] = (i + 1) % 16;
+        game_state.board[i] = (i + 1) % 16;
     }
 
     do {
         for(int i = 15; i >= 1; i--) {
             int j = rand() % (i + 1);
-            uint8_t tmp = board[j];
-            board[j] = board[i];
-            board[i] = tmp;
+            uint8_t tmp = game_state.board[j];
+            game_state.board[j] = game_state.board[i];
+            game_state.board[i] = tmp;
         }
     } while(!is_board_has_solution());
 }
 
 static void game_init() {
-    scene = ScenePlay;
-    move_count = 0;
-    tick_count = 0;
-    storage_top_record_load();
+    game_state.scene = ScenePlay;
+    game_state.move_count = 0;
+    game_state.tick_count = 0;
     moving_cell.move_direction = DirectionNone;
     board_init();
     key_stack_init();
+    popup_menu_selected_item = 0;
 }
 
 static bool is_board_solved() {
     for(int i = 0; i < 16; i++)
-        if(((i + 1) % 16) != board[i]) return false;
+        if(((i + 1) % 16) != game_state.board[i]) return false;
     return true;
 }
 
 static void game_tick() {
-    switch(scene) {
+    switch(game_state.scene) {
     case ScenePlay:
-        tick_count++;
-
+        game_state.tick_count++;
+        if (loaded_saving_ticks)
+            loaded_saving_ticks--;
         if(moving_cell.move_direction == DirectionNone && !key_stack_is_empty()) {
             set_moving_cell_by_direction(key_stack_pop());
             if(moving_cell.move_direction == DirectionNone) {
@@ -224,18 +240,19 @@ static void game_tick() {
         if(moving_cell.move_direction != DirectionNone) {
             moving_cell.move_ticks++;
             if(moving_cell.move_ticks == MOVE_TICKS) {
-                board[moving_cell.zero_index] = board[moving_cell.cell_index];
-                board[moving_cell.cell_index] = 0;
+                game_state.board[moving_cell.zero_index] =
+                    game_state.board[moving_cell.cell_index];
+                game_state.board[moving_cell.cell_index] = 0;
                 moving_cell.move_direction = DirectionNone;
-                move_count++;
+                game_state.move_count++;
             }
             if(is_board_solved()) {
                 notification_message(notification, &sequence_double_vibro);
-                if(move_count < top_record || top_record == 0) {
-                    top_record = move_count;
-                    storage_top_record_save();
+                if(game_state.move_count < game_state.top_record || game_state.top_record == 0) {
+                    game_state.top_record = game_state.move_count;
+                    storage_game_state_save();
                 }
-                scene = SceneWin;
+                game_state.scene = SceneWin;
             }
         }
         break;
@@ -243,6 +260,32 @@ static void game_tick() {
     case SceneWin:
         if(!key_stack_is_empty()) game_init();
         break;
+
+    case ScenePopup:
+        if (!key_stack_is_empty()) {
+            switch(key_stack_pop())
+            {
+                case DirectionDown:
+                    popup_menu_selected_item++;
+                    popup_menu_selected_item = popup_menu_selected_item % POPUP_MENU_ITEMS;
+                    break;
+                case DirectionUp:
+                    popup_menu_selected_item--;
+                    popup_menu_selected_item = popup_menu_selected_item % POPUP_MENU_ITEMS;
+                    break;
+                case DirectionNone:
+                    if (popup_menu_selected_item == 0) {
+                        game_state.scene = ScenePlay;
+                        notification_message(notification, &sequence_single_vibro);
+                    }
+                    else if (popup_menu_selected_item == 1) {
+                        notification_message(notification, &sequence_single_vibro);
+                        game_init();
+                    }
+                    break;
+            }
+        }
+        break;
     }
 }
 
@@ -255,9 +298,9 @@ static void draw_cell(Canvas* canvas, uint8_t x, uint8_t y, uint8_t cell_number)
 
 static void board_draw(Canvas* canvas) {
     for(int i = 0; i < 16; i++) {
-        if(board[i]) {
+        if(game_state.board[i]) {
             if(moving_cell.move_direction == DirectionNone || moving_cell.cell_index != i)
-                draw_cell(canvas, (i % 4) * 20 + 7, (i / 4) * 16 + 1, board[i]);
+                draw_cell(canvas, (i % 4) * 20 + 7, (i / 4) * 16 + 1, game_state.board[i]);
             if(moving_cell.move_direction != DirectionNone && moving_cell.cell_index == i) {
                 uint8_t from_x = (moving_cell.cell_index % 4) * 20 + 7;
                 uint8_t from_y = (moving_cell.cell_index / 4) * 16 + 1;
@@ -265,7 +308,7 @@ static void board_draw(Canvas* canvas) {
                 uint8_t to_y = (moving_cell.zero_index / 4) * 16 + 1;
                 int now_x = from_x + (to_x - from_x) * moving_cell.move_ticks / MOVE_TICKS;
                 int now_y = from_y + (to_y - from_y) * moving_cell.move_ticks / MOVE_TICKS;
-                draw_cell(canvas, now_x, now_y, board[i]);
+                draw_cell(canvas, now_x, now_y, game_state.board[i]);
             }
         }
     }
@@ -296,32 +339,40 @@ static void plate_draw(
 }
 
 static void info_draw(Canvas* canvas) {
-    plate_draw(canvas, 1, pic_top, top_record, true);
-    plate_draw(canvas, 22, pic_move, move_count, false);
-    plate_draw(canvas, 43, pic_time, tick_count / FPS, false);
+    plate_draw(canvas, 1, pic_top, game_state.top_record, true);
+    plate_draw(canvas, 22, pic_move, game_state.move_count, false);
+    plate_draw(canvas, 43, pic_time, game_state.tick_count / FPS, false);
+}
+
+static void gray_screen(Canvas* const canvas) {
+    canvas_set_color(canvas, ColorWhite);
+    for(int x = 0; x < 128; x += 2) {
+        for(int y = 0; y < 64; y++) {
+            canvas_draw_dot(canvas, x + (y % 2 == 1 ? 0 : 1), y);
+        }
+    }
 }
 
 static void render_callback(Canvas* const canvas) {
     canvas_set_color(canvas, ColorWhite);
     canvas_draw_box(canvas, 0, 0, 128, 64);
 
-    if(scene == ScenePlay || scene == SceneWin) {
+    if(game_state.scene == ScenePlay || game_state.scene == SceneWin || game_state.scene == ScenePopup) {
         canvas_set_color(canvas, ColorBlack);
         board_draw(canvas);
         info_draw(canvas);
 
-        canvas_set_color(canvas, ColorWhite);
-        canvas_draw_box(canvas, 0, 0, 128, 64);
-        canvas_set_color(canvas, ColorBlack);
-        canvas_draw_str(canvas, 10, 10, "0123456789");
-    }
-    if(scene == SceneWin) {
-        canvas_set_color(canvas, ColorWhite);
-        for(int x = 0; x < 128; x += 2) {
-            for(int y = 0; y < 64; y++) {
-                canvas_draw_dot(canvas, x + (y % 2 == 1 ? 0 : 1), y);
-            }
+        if (loaded_saving_ticks && game_state.scene != ScenePopup) {
+            canvas_set_color(canvas, ColorWhite);
+            canvas_draw_rbox(canvas, 20, 24, 88, 16, 4);
+            canvas_set_color(canvas, ColorBlack);
+            canvas_draw_rframe(canvas, 20, 24, 88, 16, 4);
+            canvas_draw_str_aligned(canvas, 64, 32, AlignCenter, AlignCenter, "Restore game ...");
         }
+    }
+
+    if(game_state.scene == SceneWin) {
+        gray_screen(canvas);
         canvas_draw_box(canvas, 7, 20, 114, 24);
         canvas_set_color(canvas, ColorBlack);
         canvas_draw_box(canvas, 8, 21, 112, 22);
@@ -330,6 +381,23 @@ static void render_callback(Canvas* const canvas) {
         canvas_set_color(canvas, ColorBlack);
         canvas_draw_xbm(canvas, 14, 27, 100, 10, pic_puzzled);
     }
+    else if (game_state.scene == ScenePopup) {
+            gray_screen(canvas);
+            canvas_set_color(canvas, ColorWhite);
+            canvas_draw_rbox(canvas, 28, 16, 72, 32, 4);
+            canvas_set_color(canvas, ColorBlack);
+            canvas_draw_rframe(canvas, 28, 16, 72, 32, 4);
+
+            for(int i=0; i < POPUP_MENU_ITEMS; i++) {
+                if ( i ==  popup_menu_selected_item) {
+                    canvas_set_color(canvas, ColorBlack);
+                    canvas_draw_box(canvas, 34, 20 + 12 * i, 60, 12);
+                }
+                
+                canvas_set_color(canvas, i == popup_menu_selected_item ? ColorWhite : ColorBlack);
+                canvas_draw_str_aligned(canvas, 64, 26 + 12 * i, AlignCenter, AlignCenter, popup_menu_strings[i]);
+            }
+    }
 }
 
 static void game_event_handler(GameEvent const event) {
@@ -349,10 +417,21 @@ static void game_event_handler(GameEvent const event) {
                 key_stack_push(DirectionLeft);
                 break;
             case InputKeyOk:
-                key_stack_push(DirectionNone);
+                if (game_state.scene == ScenePlay) {
+                    game_state.scene = ScenePopup;
+                    key_stack_init();
+                } 
+                else
+                    key_stack_push(DirectionNone);
                 break;
             case InputKeyBack:
-                sandbox_loop_exit();
+                if (game_state.scene == ScenePopup) {
+                    game_state.scene = ScenePlay;
+                }
+                else {
+                    storage_game_state_save();
+                    sandbox_loop_exit();
+                }
                 break;
             }
         }
@@ -376,6 +455,17 @@ static void game_free() {
 int32_t game15_app() {
     game_alloc();
     game_init();
+
+    loaded_saving_ticks = 0;
+    if(storage_game_state_load()) {
+        if (game_state.scene != ScenePlay) 
+            game_init();
+        else
+            loaded_saving_ticks = FPS;
+    }
+    else 
+        game_init();
+
     sandbox_init(
         FPS, (SandboxRenderCallback)render_callback, (SandboxEventHandler)game_event_handler);
     sandbox_loop();