---

import pygame
import sys

# Инициализация
pygame.init()

# Константы
WIDTH, HEIGHT = 800, 600
FPS = 60
GRAVITY = 0.8
JUMP_STRENGTH = -15
MOVE_SPEED = 5

# Цвета
SKY = (135, 206, 235)
GREEN = (34, 139, 34)
BROWN = (139, 69, 19)
RED = (220, 50, 50)
YELLOW = (255, 215, 0)
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)

screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Простой платформер")
clock = pygame.time.Clock()
font = pygame.font.SysFont("Arial", 32, bold=True)


class Player(pygame.sprite.Sprite):
    def __init__(self, x, y):
        super().__init__()
        self.image = pygame.Surface((40, 50))
        self.image.fill(RED)
        self.rect = self.image.get_rect(topleft=(x, y))
        self.vel_x = 0
        self.vel_y = 0
        self.on_ground = False

    def update(self, platforms):
        keys = pygame.key.get_pressed()
        self.vel_x = 0
        if keys[pygame.K_LEFT] or keys[pygame.K_a]:
            self.vel_x = -MOVE_SPEED
        if keys[pygame.K_RIGHT] or keys[pygame.K_d]:
            self.vel_x = MOVE_SPEED

        # Прыжок
        if (keys[pygame.K_SPACE] or keys[pygame.K_UP] or keys[pygame.K_w]) and self.on_ground:
            self.vel_y = JUMP_STRENGTH
            self.on_ground = False

        # Гравитация
        self.vel_y += GRAVITY
        if self.vel_y > 20:
            self.vel_y = 20

        # Движение по X
        self.rect.x += self.vel_x
        for plat in platforms:
            if self.rect.colliderect(plat):
                if self.vel_x > 0:
                    self.rect.right = plat.left
                elif self.vel_x < 0:
                    self.rect.left = plat.right

        # Движение по Y
        self.rect.y += self.vel_y
        self.on_ground = False
        for plat in platforms:
            if self.rect.colliderect(plat):
                if self.vel_y > 0:
                    self.rect.bottom = plat.top
                    self.vel_y = 0
                    self.on_ground = True
                elif self.vel_y < 0:
                    self.rect.top = plat.bottom
                    self.vel_y = 0

        # Границы экрана
        if self.rect.left < 0:
            self.rect.left = 0
        if self.rect.right > WIDTH:
            self.rect.right = WIDTH


class Coin(pygame.sprite.Sprite):
    def __init__(self, x, y):
        super().__init__()
        self.image = pygame.Surface((20, 20), pygame.SRCALPHA)
        pygame.draw.circle(self.image, YELLOW, (10, 10), 10)
        self.rect = self.image.get_rect(center=(x, y))


def main():
    # Платформы
    platforms = [
        pygame.Rect(0, HEIGHT - 40, WIDTH, 40),      # земля
        pygame.Rect(150, 450, 150, 20),
        pygame.Rect(400, 350, 150, 20),
        pygame.Rect(600, 250, 150, 20),
        pygame.Rect(300, 200, 120, 20),
    ]

    player = Player(50, HEIGHT - 150)

    # Монетки
    coins = pygame.sprite.Group()
    for (x, y) in [(200, 400), (450, 300), (650, 200), (340, 150)]:
        coins.add(Coin(x, y))

    score = 0

    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                sys.exit()

        # Обновление
        player.update(platforms)

        # Сбор монет
        collected = pygame.sprite.spritecollide(player, coins, True)
        score += len(collected) * 10

        # Падение вниз — респавн
        if player.rect.top > HEIGHT:
            player.rect.topleft = (50, HEIGHT - 150)
            player.vel_y = 0
            score = max(0, score - 5)

        # Отрисовка
        screen.fill(SKY)

        for plat in platforms:
            pygame.draw.rect(screen, BROWN, plat)
            pygame.draw.rect(screen, GREEN, (plat.x, plat.y, plat.width, 6))

        coins.draw(screen)
        screen.blit(player.image, player.rect)

        # Счёт
        score_text = font.render(f"Счёт: {score}", True, WHITE)
        screen.blit(score_text, (10, 10))

        # Победа
        if len(coins) == 0:
            win = font.render("Победа! Все монеты собраны!", True, WHITE)
            screen.blit(win, (WIDTH // 2 - win.get_width() // 2, HEIGHT // 2))

        pygame.display.flip()
        clock.tick(FPS)


if __name__ == "__main__":
    main()