emulate_loading_bar6.py

import pygame
import random
import time

# Init Pygame
pygame.init()
screen = pygame.display.set_mode((800, 600))
pygame.display.set_caption("Level Loading with Stutters")
clock = pygame.time.Clock()

# Colors
WHITE = (255, 255, 255)
GRAY = (50, 50, 50)
GREEN = (0, 255, 0)
RED = (255, 0, 0)

class LoadingBar:
    def __init__(self, x, y, width, height):
        self.pos = (x, y)
        self.size = (width, height)
        self.progress = 0.0  # 0.0 to 1.0

    def update(self, progress):
        self.progress = max(0.0, min(progress, 1.0))

    def draw(self, surface):
        x, y = self.pos
        w, h = self.size
        pygame.draw.rect(surface, GRAY, (x, y, w, h), border_radius=5)
        pygame.draw.rect(surface, GREEN, (x, y, w * self.progress, h), border_radius=5)

class Level:
    def __init__(self, name):
        self.name = name
        self.loaded = False

    def load(self, loading_bar, surface):
        total_steps = 1250 // 3 # 416.666
        progress = 0

        while progress < total_steps:
            # Simulate variable load time per step
            stutter_chance = random.random()
            if stutter_chance < 0.1:
                time.sleep(0.2)  # simulate freeze/stutter
            elif stutter_chance < 0.6:
                time.sleep(0.0090)
            elif stutter_chance < 0.3:
                time.sleep(0.025)
            elif stutter_chance < 0.150:
                stutter_chance = random.random()
                time.sleep(0.05)
                if stutter_chance < 0.1:
                    progress += 1.0
                elif stutter_chance < 0.150:
                    progress += 0.5
                elif stutter_chance < 0.6:
                    progress += 0.10
            else:
                time.sleep(0.01)

            progress += 0.25
            loading_bar.update(progress / total_steps)

            # Draw update
            surface.fill((30, 30, 30))
            loading_bar.draw(surface)

            # Optional text
            font = pygame.font.SysFont(None, 36)
            text = font.render(f"Loading {self.name}... {int(loading_bar.progress * 100)}%", True, WHITE)
            surface.blit(text, (loading_bar.pos[0], loading_bar.pos[1] - 40))

            pygame.display.flip()
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    pygame.quit()
                    exit()

        self.loaded = True

# Create loading bar and level
loading_bar = LoadingBar(200, 300, 400, 40)
level = Level("Level 1")

# Load level
level.load(loading_bar, screen)

# Main game loop starts after loading
running = True
while running:
    screen.fill((0, 0, 0))
    font = pygame.font.SysFont(None, 48)
    text = font.render("Level Loaded!", True, GREEN)
    screen.blit(text, (280, 280))

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    pygame.display.flip()
    clock.tick(60)

pygame.quit()