How Can I Create a Text Input Box in Pygame?

Creating Text Input Boxes in Pygame

In game development with Python's Pygame library, situations may arise where developers need to obtain text input from players. This article provides a solution for creating text input boxes in Pygame, allowing users to type in text and store it for further use within your game.

Implementing a Simple Text Input Box

Here's a step-by-step guide to implement a basic text input box with Pygame:

1. Define the Input Box Area: Begin by defining the rectangle that will represent the text input box. This involves specifying its position and dimensions.
2. Handle Mouse Click Events: Monitor mouse click events to activate the text input box when the user clicks within the defined rectangle.
3. Activate and Deactivate the Box: When the user clicks on the text input box, set a variable to indicate that the box is active. On subsequent clicks outside the box, set the active variable to False.
4. Receive and Append User Input: Use the keyboard event listener to monitor keystrokes while the text input box is active. Add any entered characters to a string variable for storage.
5. Handle Special Keystrokes: Implement specific handlers for keys such as the Enter key, which may be used to store the entered text or execute a particular action.

Code Example

The following Python code showcases the implementation of a text input box with Pygame:

import pygame as pg
from pygame import font

...

# Create a function for handling the main game loop
def main():
    input_box = pg.Rect(100, 100, 140, 32)
    active = False
    text = ''
    ...

    # Game loop
    while running:
        ...
        
        # Handle events
        for event in pg.event.get():
            if event.type == pg.QUIT:
                running = False
            ...
            
            # Handle mouse click events
            if event.type == pg.MOUSEBUTTONDOWN:
                if input_box.collidepoint(event.pos):
                    active = not active
                else:
                    active = False
            ...

Additional Resources

• pygame_textinput: a third-party library that provides a more advanced input handling system for Pygame.

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