Switch boards after keypress, wait some time etc.

menu.py

@@ -2,6 +2,9 @@
 
 import math
 import sys
+from time import sleep
+from threading import Thread
+from queue import Queue, Empty
 from abc import abstractmethod
 from typing import Tuple, Callable, TypedDict, List
 
@@ -53,6 +56,23 @@ class Button:
                 self.cbk()
 
 
+class MessageBoard(IBoard):
+    def __init__(self, screen_rect: pygame.Rect, text: str):
+        self.text = text
+        self.font = pygame.freetype.SysFont(name="Sans", size=30)
+        text_rect = self.font.get_rect(self.text)
+        self.text_pos = pygame.Rect((screen_rect.left + (screen_rect.width - text_rect.width)/2),
+                                    (screen_rect.top + (screen_rect.height - text_rect.height)/2),
+                                    text_rect.width, text_rect.height)
+
+    def handle_event(self, _):
+        pass
+
+    def draw(self, screen: pygame.Surface):
+        screen.fill("purple")
+        self.font.render_to(screen, self.text_pos, self.text, fgcolor="black")
+
+
 class MenuBoard(IBoard):
     BUTTON_MARGINS = 10
 
@@ -103,15 +123,34 @@ class App:
         self.screen = pygame.display.set_mode((info.current_w, info.current_h), flags=pygame.FULLSCREEN)
         self.clock = pygame.time.Clock()
         self.running = False
-        buttons = list(map(lambda t: ButtonDef(text=f"{t}", cbk=lambda: print(t)), list(range(btns))))
+        buttons = list(map(lambda t: ButtonDef(text=f"{t}", cbk=self.button_press_handler(str(t))), list(range(btns))))
         buttons.append(ButtonDef(text="Exit", cbk=self.quit))
-        self.board: IBoard = MenuBoard(pygame.Rect(0, 0, info.current_w, info.current_h), buttons)
+        self.board: IBoard = MenuBoard(self.get_screen_rect(), buttons)
+        self.task_q = Queue()
+
+    def get_screen_rect(self) -> pygame.Rect:
+        return pygame.Rect(0, 0, self.screen.get_width(), self.screen.get_height())
+
+    def button_press_handler(self, text: str) -> Callable[[], None]:
+        def impl():
+            previous_board = self.board
+            def thr_fun():
+                def end_thr():
+                    self.board = previous_board
+                sleep(5)
+                self.task_q.put(end_thr)
+            process_thr = Thread(target=thr_fun)
+            process_thr.start()
+            self.board = MessageBoard(self.get_screen_rect(), f"Wait: {text}")
+        return impl
 
     def loop(self):
         self.running = True
         while self.running:
-            # poll for events
-            # pygame.QUIT event means the user clicked X to close your window
+            try:
+                self.task_q.get_nowait()()
+            except Empty:
+                pass
             for event in pygame.event.get():
                 if event.type == pygame.QUIT:
                     self.running = False
@@ -125,6 +164,7 @@ class App:
         pygame.quit()
 
     def quit(self):
+        self.board = MessageBoard(self.get_screen_rect(), "Exiting...")
         self.running = False