import sys

# Initialize Pygame

pygame.init()

# Constants

WIDTH, HEIGHT = 800, 600

FPS = 60

GRAVITY = 0.8

JUMP_STRENGTH = -15

MOVEMENT_SPEED = 5

# Create the screen object

screen = pygame.display.set_mode((WIDTH, HEIGHT))

pygame.display.set_caption('Platformer')

# Colors

WHITE = (255, 255, 255)

BLACK = (0, 0, 0)

RED = (255, 0, 0)

# Clock for controlling frame rate

clock = pygame.time.Clock()

class Player(pygame.sprite.Sprite):

def init(self):

super().__init__()

self.image = pygame.Surface((50, 50)) # A 50x50 block for the player

self.image.fill(RED)

self.rect = self.image.get_rect()

self.rect.center = (WIDTH // 2, HEIGHT - 70)

self.x_velocity = 0

self.y_velocity = 0

self.on_ground = False

def update(self, platforms):

self.apply_gravity()

self.move()

self.check_collisions(platforms)

def apply_gravity(self):

if not self.on_ground:

self.y_velocity += GRAVITY

else:

self.y_velocity = 0

def move(self):

keys = pygame.key.get_pressed()

if keys[pygame.K_LEFT]:

self.x_velocity = -MOVEMENT_SPEED

elif keys[pygame.K_RIGHT]:

self.x_velocity = MOVEMENT_SPEED

else:

self.x_velocity = 0

self.rect.x += self.x_velocity

self.rect.y += self.y_velocity

def jump(self):

if self.on_ground:

self.y_velocity = JUMP_STRENGTH

def check_collisions(self, platforms):

self.on_ground = False

for platform in platforms:

if self.rect.colliderect(platform.rect):

if self.y_velocity > 0:

self.rect.bottom = platform.rect.top

self.on_ground = True

break

def game_loop():

player = Player()

platform1 = Platform(100, HEIGHT - 100, 200, 20)

platform2 = Platform(400, HEIGHT - 200, 200, 20)

all_sprites = pygame.sprite.Group()

all_sprites.add(player)

platforms = pygame.sprite.Group()

platforms.add(platform1, platform2)

running = True

while running:

screen.fill(WHITE)

for event in pygame.event.get():

if event.type == pygame.QUIT:

running = False

if event.type == pygame.KEYDOWN:

if event.key == pygame.K_SPACE:

player.jump()

# Update all sprites

all_sprites.update(platforms)

# Draw everything

all_sprites.draw(screen)

platforms.draw(screen)

pygame.display.flip()

# Control the frame rate

clock.tick(FPS)

pygame.quit()

sys.exit()

if name == "__main__":

game_loop()