I need help improving my code. It's a basic game where an object avoids stuff coming at it$.$ I need to improve the graphics using the same method i have been using to draw, I can't load an image. A submarine is the main object that will be avoiding stuff coming at$.$ The objects coming at it should be a tire, a fish$/$shark$,$ reef coming out of the bottom of the screen, anything thing else you think will look good. Try your best to create the best graphics you can. For the game logic, it's all done except just make it go faster as you go on$.$ Please use what i've been using and try your best to explain it to me and paste the final code aswell. import pygame

import sys

import random

# Initialize Pygame

pygame.init$()$

# Constants

WIDTH, HEIGHT $=800,600$

SUBMARINE$\_$WIDTH, SUBMARINE$\_$HEIGHT $=50,30$

OBSTACLE$\_$WIDTH, OBSTACLE$\_$HEIGHT $=50,50$

FPS $=60$

SUBMARINE$\_$SPEED $=5$

# Colors

WHITE $=(255,255,255)$

BLUE $=(0,0,255)$

RED $=(255,0,0)$

# Game variables

submarine$\_$rect $=$ pygame.Rect$($WIDTH $//2-$ SUBMARINE$\_$WIDTH $//2,$ HEIGHT $//2-$ SUBMARINE$\_$HEIGHT $//2,$ SUBMARINE$\_$WIDTH, SUBMARINE$\_$HEIGHT$)$

obstacle$\_$rect $=$ pygame.Rect$($WIDTH$,$ random.randint$(0,$ HEIGHT $-$ OBSTACLE$\_$HEIGHT$),$ OBSTACLE$\_$WIDTH, OBSTACLE$\_$HEIGHT$)$

score $=0$

# Create the screen

screen $=$ pygame.display.set$\_$mode$(($WIDTH$,$ HEIGHT$))$

pygame.display.set$\_$caption$("$Submarine Game"$)$

# Fonts

font $=$ pygame.font.Font$($None$,36)$

# Functions

def draw$\_$submarine$()$:

pygame.draw.rect$($screen$,$ BLUE, submarine$\_$rect$)$

def draw$\_$obstacle$()$:

pygame.draw.rect$($screen$,$ RED, obstacle$\_$rect$)$

def draw$\_$score$()$:

score$\_$text $=$ font.render$("$Score: $"+$ str$($score$),$ True, WHITE$)$

screen.blit$($score$\_$text, $(10,10))$

# Game loop

clock $=$ pygame.time.Clock$()$

while True:

for event in pygame.event.get$()$:

if event.type $==$ pygame.QUIT:

pygame.quit$()$

sys$.$exit$()$

keys $=$ pygame.key.get$\_$pressed$()$

if keys$[$pygame$.$K$\_$UP$]$ and submarine$\_$rect.top $>0$:

submarine$\_$rect.y $-=$ SUBMARINE$\_$SPEED

if keys$[$pygame$.$K$\_$DOWN$]$ and submarine$\_$rect.bottom $<$ HEIGHT:

submarine$\_$rect.y $+=$ SUBMARINE$\_$SPEED

# Update obstacle position

obstacle$\_$rect.x $-=5$

if obstacle$\_$rect.right $<0$:

obstacle$\_$rect.x $=$ WIDTH

obstacle$\_$rect.y $=$ random.randint$(0,$ HEIGHT $-$ OBSTACLE$\_$HEIGHT$)$

score $+=1$

# Check for collisions

if submarine$\_$rect.colliderect$($obstacle$\_$rect$)$:

print$("$Game Over!"$)$

pygame.quit$()$

sys$.$exit$()$

# Draw everything

screen.fill$($WHITE$)$

draw$\_$submarine$()$

draw$\_$obstacle$()$

draw$\_$score$()$

# Update display

pygame.display.flip$()$

# Cap the frame rate

clock.tick$($FPS$)$