import pygame
import random

# Initialize Pygame
pygame.init()

# Constants
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
PLAYER_WIDTH = 30
PLAYER_HEIGHT = 50
PLATFORM_WIDTH = 80
PLATFORM_HEIGHT = 10
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
GRAVITY = 0.5
JUMP_POWER = -10
MAX_SPEED_Y = 10
PLAYER_SPEED_X = 5

# Create the game window
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("Parkour Game")

clock = pygame.time.Clock()

# Define the Player class
class Player(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface([PLAYER_WIDTH, PLAYER_HEIGHT])
        self.image.fill(WHITE)
        self.rect = self.image.get_rect()
        self.rect.x = SCREEN_WIDTH // 2
        self.rect.y = SCREEN_HEIGHT // 2
        self.speed_x = 0
        self.speed_y = 0
        self.on_ground = False

    def update(self, platforms):
        self.speed_y += GRAVITY
        self.speed_y = min(self.speed_y, MAX_SPEED_Y)

        self.rect.x += self.speed_x

        # Check collision with platforms
        for platform in platforms:
            if pygame.sprite.collide_rect(self, platform):
                if self.speed_x > 0:
                    self.rect.right = platform.rect.left
                elif self.speed_x < 0:
                    self.rect.left = platform.rect.right

        self.rect.y += self.speed_y

        # Check collision with platforms
        self.on_ground = False
        for platform in platforms:
            if pygame.sprite.collide_rect(self, platform):
                if self.speed_y > 0:
                    self.rect.bottom = platform.rect.top
                    self.on_ground = True
                elif self.speed_y < 0:
                    self.rect.top = platform.rect.bottom

                self.speed_y = 0

        # Keep the player inside the screen
        if self.rect.left < 0:
            self.rect.left = 0
        elif self.rect.right > SCREEN_WIDTH:
            self.rect.right = SCREEN_WIDTH

# Define the Platform class
class Platform(pygame.sprite.Sprite):
    def __init__(self, x, y):
        super().__init__()
        self.image = pygame.Surface([PLATFORM_WIDTH, PLATFORM_HEIGHT])
        self.image.fill(WHITE)
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y

# Create sprite groups
all_sprites = pygame.sprite.Group()
platforms = pygame.sprite.Group()

# Create player
player = Player()
all_sprites.add(player)

# Create platforms
platform1 = Platform(0, SCREEN_HEIGHT - 20)
platform2 = Platform(SCREEN_WIDTH // 2 - 40, SCREEN_HEIGHT // 2)
platform3 = Platform(200, 400)
platform4 = Platform(500, 300)
platforms.add(platform1, platform2, platform3, platform4)
all_sprites.add(platform1, platform2, platform3, platform4)

# Main game loop
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_SPACE and player.on_ground:
                player.speed_y = JUMP_POWER

    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        player.speed_x = -PLAYER_SPEED_X
    elif keys[pygame.K_RIGHT]:
        player.speed_x = PLAYER_SPEED_X
    else:
        player.speed_x = 0

    all_sprites.update(platforms)

    screen.fill(BLACK)
    all_sprites.draw(screen)
    pygame.display.flip()
    clock.tick(60)

pygame.quit()