import pygame

# Pygame initialisieren
pygame.init()

# Bildschirmgröße
WIDTH, HEIGHT = 800, 600
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Plattform- und Spieler-Interaktion")

# Farben
WHITE = (255, 255, 255)
BLUE = (0, 0, 255)
GREEN = (0, 255, 0)

# FPS und Clock
FPS = 60
clock = pygame.time.Clock()

# Spieler-Eigenschaften
player = pygame.Rect(200, 200, 50, 50)
player_color = BLUE
player_speed = 5
gravity = 1
velocity_y = 0
on_ground = False

# Plattform-Eigenschaften
platform = pygame.Rect(200, 400, 400, 20)
platform_color = GREEN

# Spiel-Loop
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # Spieler-Bewegung
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        player.x -= player_speed
    if keys[pygame.K_RIGHT]:
        player.x += player_speed
    if keys[pygame.K_SPACE] and on_ground:
        velocity_y = -15  # Spieler springt

    # Schwerkraft anwenden
    velocity_y += gravity
    player.y += velocity_y

    # Plattform-Kollision
    if player.colliderect(platform) and velocity_y >= 0:
        player.y = platform.y - player.height
        velocity_y = 0
        on_ground = True
    else:
        on_ground = False

    # Bildschirm füllen und Objekte zeichnen
    screen.fill(WHITE)
    pygame.draw.rect(screen, platform_color, platform)
    pygame.draw.rect(screen, player_color, player)

    # Bildschirm aktualisieren
    pygame.display.flip()
    clock.tick(FPS)

pygame.quit()