import pygame
import random

pygame.init()

#Константы
WIDTH, HEIGHT = 800, 400
GRAVITY = 0.8
JUMP_STRENGHT = -15
SPEED = 6
OBSTACLE_WIDTH = 40
OBSTACLE_HEIGHT = 60
GAP_BETWEEN_OBSTACLES = 300

# Задаем цвета
WHITE = (255, 255, 255)
BLUE = (0, 150, 255)
RED = (255, 0, 0)
BACKGROUND_COLOR = (30,30,30)
GROUND_COLOR = (38,236,104)

screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Ers first game")

class Player:
    def __init__(self):
        self.rect = pygame.Rect(100,HEIGHT - 80, 30, 30)
        self.vel_y = 0
        self.on_ground = False
    def jump(self):
        if self.on_ground:
            self.vel_y = JUMP_STRENGHT
            self.on_ground = False
    def update(self):
        self.vel_y += GRAVITY
        self.rect.y += self.vel_y

        if self.rect.bottom > HEIGHT - 50:
            self.rect.bottom = HEIGHT - 50
            self.vel_y = 0
            self.on_ground = True
    def draw(self,screen):
        pygame.draw.rect(screen, BLUE, self.rect)