How to Prevent PyGame Animation Flickering?

Troubleshooting PyGame Animation Flickering

If your PyGame animation experiences flickering, it could be due to a common issue related to display updates. Here's why flickering occurs and how to resolve it:

Cause of Flickering

Flickering can happen when you make multiple calls to pygame.display.update() within a single application loop. The reason for this is that each update causes the display to be refreshed, which can lead to a rapid succession of updates that appear as flickering.

Solution

To eliminate flickering, ensure that you call pygame.display.update() only once at the end of the application loop. This way, the display will be updated only when all changes are made, resulting in a smooth animation.

Here's the updated code:

<code class="python">while running:
    screen.fill((225, 0, 0))

    # [...]

    player(playerX, playerY)
    pygame.display.update()  # Call update only once at the end</code>

By removing all other calls to pygame.display.update(), you can ensure that the display is updated only when it reflects all the latest changes in the scene. This will prevent flickering and provide a seamless animation.

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