Best Score and a Safe Restart

Part of the Game Rules section of Coddy's Pygame journey. Lesson 30 of 30.

The game over screen shows the best score and starts a new game on Space. best is set once, before the loop, outside reset(), so a new game keeps it.

Space now does a third job, on the game over screen:

elif pygame.time.get_ticks() - over_time > 500:
    reset()
    state = "play"

Space is the jump key, so a player is often pressing it at the moment of a crash. Without a wait the game would restart before they saw the result. Remember the time of the crash in over_time and accept Space on the game over screen only 500 ms later.

Challenge

Hard

Show the best score and restart safely.

After state = "menu", set best = 0 and over_time = 0. A crash sets best = max(best, score) and over_time to now.
Game over shows Game over, Best: 00120 and Press Space to play again.
There, Space calls reset() and plays, only 500 ms after the crash.

Press Play and crash: your best shows, and Space starts again. Then Check.

Try it yourself

import random
import pygame

pygame.init()
screen = pygame.display.set_mode((640, 320))
pygame.display.set_caption("Sky Runner")
clock = pygame.time.Clock()
font = pygame.font.Font("assets/fonts/pixel.ttf", 32)
big_font = pygame.font.Font("assets/fonts/pixel.ttf", 48)
INK = (40, 50, 80)

SKY = (140, 200, 240)
GROUND = (90, 160, 80)
GROUND_Y = 260
GRAVITY = 1
SPAWN = pygame.USEREVENT + 1
POINT = pygame.USEREVENT + 2


class Runner(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.frames = [
            pygame.image.load("assets/images/player.png").convert_alpha(),
            pygame.image.load("assets/images/player_walk.png").convert_alpha(),
        ]
        self.image = self.frames[0]
        self.step = 0
        self.rect = self.image.get_rect(midbottom=(100, GROUND_Y))
        self.vy = 0

    def jump(self):
        if self.rect.bottom == GROUND_Y:
            self.vy = -16

    def update(self):
        self.vy += GRAVITY
        self.rect.y += self.vy
        if self.rect.bottom >= GROUND_Y:
            self.rect.bottom = GROUND_Y
            self.vy = 0
        if self.rect.bottom == GROUND_Y:
            self.step += 1
            self.image = self.frames[self.step // 8 % 2]
        else:
            self.image = self.frames[1]


class Obstacle(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = random.choice(obstacle_images)
        self.rect = self.image.get_rect(midbottom=(664, GROUND_Y))

    def update(self):
        self.rect.x -= speed
        if self.rect.right < 0:
            self.kill()


obstacle_images = [
    pygame.image.load("assets/images/spike_ball.png").convert_alpha(),
    pygame.image.load("assets/images/blob.png").convert_alpha(),
]


def reset():
    global runner, obstacles, speed, score
    runner = Runner()
    obstacles = pygame.sprite.Group()
    speed = 6
    score = 0
    pygame.time.set_timer(SPAWN, 1500)
    pygame.time.set_timer(POINT, 100)


def show(text, text_font, y):
    picture = text_font.render(text, True, INK)
    screen.blit(picture, picture.get_rect(center=(320, y)))


reset()
state = "menu"

running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type == pygame.KEYDOWN and event.key in (pygame.K_SPACE, pygame.K_UP):
            if state == "play":
                runner.jump()
            elif state == "menu":
                reset()
                state = "play"
        if event.type == SPAWN and state == "play":
            obstacles.add(Obstacle())
            pygame.time.set_timer(SPAWN, random.randint(1000, 2000))
        if event.type == POINT and state == "play":
            score += 1

    if state == "play":
        speed = min(14, 6 + score // 100)
        runner.update()
        obstacles.update()
        if pygame.sprite.spritecollideany(runner, obstacles, pygame.sprite.collide_mask):
            state = "over"

    screen.fill(SKY)
    pygame.draw.rect(screen, GROUND, (0, GROUND_Y, 640, 60))
    screen.blit(runner.image, runner.rect)
    obstacles.draw(screen)
    if state == "menu":
        show("Sky Runner", big_font, 110)
        show("Press Space to start", font, 170)
    else:
        score_text = font.render(f"{score:05}", True, INK)
        screen.blit(score_text, score_text.get_rect(topright=(630, 10)))
    if state == "over":
        message = font.render("Game over", True, (40, 50, 80))
        screen.blit(message, message.get_rect(center=(320, 140)))
    pygame.display.flip()
    clock.tick(60)

pygame.quit()