Скачать или смотреть How to Successfully Control Music Playback in pygame

Discover how to effectively handle music playback, including rewinding and pausing features, in your `pygame` projects with this comprehensive guide.
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Why Won't Pygame Music Go Backward?

Have you ever attempted to manipulate music playback using pygame, only to find that your commands don’t seem to have the expected effect? A common issue arises when developers want to rewind a track or change its playback position, only to be met with unexpected behavior. In this guide, we will explore a particular problem - why your pygame music might not go backward as intended and how to resolve it.

Understanding the Problem

A developer faced a situation where they had a code snippet designed to rewind music playback using pygame. The following code aimed to make the music rewind 5 seconds from its current position:

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However, despite expectations, this function did not rewind the music as intended, and the music sometimes moved forward instead.

The Core Issue

The misunderstanding stems from how pygame tracks music playback:

The get_pos() function returns the playback position in milliseconds, but does not account for any starting offsets.

As a result, relying on get_pos() can lead to incorrect assumptions about the current position of the playback, leading to issues when trying to rewind or manipulate it.

The Solution

To effectively handle music playback in pygame, you need to manage the elapsed time independently and utilize both the rewind() and set_pos() functions appropriately. Let’s break down a revised implementation step-by-step.

Code Overview

Import Necessary Libraries: Make sure you have both pygame and tkinter for GUI development.

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Define Global Variables:

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Play Function: This function tracks when music starts playing.

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Backwards Function: This function rewinds the music 5 seconds.

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Setting Up the GUI:

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Display Elapsed Time: You can use a label to show the elapsed time of the music playing.

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Running the Application:

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Adding Pause Functionality

You could further enhance your application by adding pause functionality, allowing users to halt playback and resume it seamlessly:

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Recap

Understanding the behavior of pygame music playback can be tricky, especially when dealing with functions that manipulate playback positions. By managing the elapsed time yourself and using functions like rewind() and set_pos(), you can gain better control over music playback.

If you implement the suggestions outlined in this guide, you should be able to resume your project with the desired functionality to rewind and control your music playback accurately.

Feel free to explore these code snippets and incorporate them into your projects. Happy coding!