gamestatek

src/assets.py

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+import pygame
+sprites = {
+	"louisu": pygame.image.load("res/sprite/louisu.png"),
+	"louisd": pygame.image.load("res/sprite/louisd.png"),
+	"louisl": pygame.image.load("res/sprite/louisl.png"),
+	"louisb": pygame.image.load("res/sprite/louisb.png"),
+}
+
+
+def convert():
+	for name, image in sprites.items():
+		sprites[name] = image.convert_alpha()

src/gamestate.py

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+import gamestates.none
+import gamestates.title
+
+gamestates = {
+    "none": gamestates.none,
+    "title": gamestates.title
+}
+gamestate = "none"
+
+def switch_gamestate(state):
+    global gamestate
+    gamestate = state
+    gamestates[gamestate].switch()
+
+def update(dt):
+    gamestates[gamestate].update(dt)
+
+def draw(screen):
+    gamestates[gamestate].draw(screen)

src/gamestates/none.py

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+import gamestate
+
+def switch():
+    pass
+
+def update(dt):
+    gamestate.switch_gamestate("title")
+
+def draw(screen):
+    pass
+

src/gamestates/title.py

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+import assets
+
+def switch():
+    print("Hello I'm switched")
+
+def update(dt):
+    pass
+
+def draw(screen):
+    screen.fill("blue")
+    screen.blit(assets.sprites["louisu"], (0, 0))
+

src/main.py

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+import pygame
+import assets
+import gamestate
+
+pygame.init()
+
+GAME_WIDTH = 256
+GAME_HEIGHT = 224
+
+screen = pygame.display.set_mode((GAME_WIDTH, GAME_HEIGHT), pygame.RESIZABLE)
+pygame.display.set_caption("Rick Roll To The Moon")
+clock = pygame.time.Clock()
+running = True
+dt = 0
+
+game_screen = pygame.Surface((GAME_WIDTH, GAME_HEIGHT))
+
+assets.convert()
+
+while running:
+    for event in pygame.event.get():
+        if event.type == pygame.QUIT:
+            running = False
+
+    gamestate.update(dt)
+    gamestate.draw(game_screen)
+
+    screen.fill((0, 0, 0))
+    
+    scale = min(
+        screen.get_width() // GAME_WIDTH,
+        screen.get_height() // GAME_HEIGHT
+    )
+    scale = max(1, scale)
+
+    scaled_width = GAME_WIDTH * scale
+    scaled_height = GAME_HEIGHT * scale
+
+    x = (screen.get_width() - scaled_width) // 2
+    y = (screen.get_height() - scaled_height) // 2
+
+    scaled_surface = pygame.transform.scale(
+        game_screen,
+        (scaled_width, scaled_height)
+    )
+
+    screen.blit(scaled_surface, (x, y))
+    
+    pygame.display.flip()
+
+    dt = clock.tick(60) / 1000
+
+pygame.quit()