main.py

import pygame, time
from pygame.locals import *
from sys import exit

class char (object):
    def __init__ (self, img, x, y, screen):
        self.img = pygame.image.load(img)
        self.x = float(x)
        self.y = float(y)
        screen.blit(self.img, (self.x, self.y))


SCREEN_WIDTH = 1280
SCREEN_HEIGHT = 720
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
nothing = pygame.image.load('char.png')
ground = pygame.image.load('ground.png')
background = pygame.image.load('background.png')
groundHeight = ground.get_height()
backgroundY = SCREEN_HEIGHT - groundHeight - background.get_height()
player = char('char.png', 30, SCREEN_HEIGHT - nothing.get_height() - groundHeight, screen)
blue = (70, 70, 255)
notjump = 0
trail = 0
progRunning = True
jump = False

clock = pygame.time.Clock()
fps = 30

screen.blit(background, (0, backgroundY))
screen.blit(ground, (0, SCREEN_HEIGHT - groundHeight))
while (progRunning):
        #Checking if exit is required
        for event in pygame.event.get():
            if (event.type == QUIT):
                pygame.quit()
                exit(0)
            if not hasattr(event, 'key'): continue
            if (event.key == K_ESCAPE):
                pygame.quit()
                exit(0)
        #Player Movement
        if (pygame.key.get_pressed()[pygame.K_a] != 0):
            player.x -= 2
        if (pygame.key.get_pressed()[pygame.K_d] != 0):
            player.x += 2
        if (pygame.key.get_pressed()[pygame.K_SPACE] != 0 or pygame.key.get_pressed()[pygame.K_w] != 0) & (jump != 50) & (notjump > 50):
            jump += 1
            player.y = player.y / 1.015

        if (jump == 50):
            notjump = 0
        
        #Making sure the player can't leave the screen
        if (player.x < 0):
            player.x = 0
        if (player.x + player.img.get_width() > SCREEN_WIDTH):
            player.x = SCREEN_WIDTH - player.img.get_width()
        if (player.y < 0):
            player.y = 0
        if (player.y + player.img.get_height() >= SCREEN_HEIGHT - groundHeight):
            player.y = SCREEN_HEIGHT - player.img.get_height() - groundHeight
            jump = 0
            notjump += 1
        else:
            player.y = player.y * 1.006
        screen.blit(background, (0, backgroundY))
        screen.blit(player.img, (player.x, player.y))    
        pygame.display.update()