How can I implement a feature in my game that allows players to reposition a windowed game that has moved off-screen?

Implementing Window Repositioning for Off-Screen Games in Godot

Understanding Window Positioning in Godot

In Godot, handling windowed applications and ensuring they remain on-screen is essential for providing a smooth user experience. By default, Godot allows some window management through its scripting API.

Detecting Off-Screen Windows

1. Get Current Window Position: Use OS.window_position to get the current window position. This property is crucial for determining whether your game window is off-screen.
2. Check Against Screen Dimensions: Use OS.get_screen_size() to fetch the dimensions of the current screen. Compare the window’s position with the screen size to ascertain if part or all of the window has moved off-screen.

Repositioning Off-Screen Windows

1. Calculate New Positions: If a window is detected off-screen, calculate a suitable position that places the window back within the visible area. A simple approach is repositioning it to the top-left corner of the screen.
2. Set New Position: Utilize OS.window_position to set the new position, ensuring the window appears on-screen:

if window_position.x < 0 or window_position.y < 0 or window_position.x + window_size.x > screen_size.x or window_position.y + window_size.y > screen_size.y:
    OS.window_position = Vector2(0, 0)  # Example reposition to top-left

Handling Multi-Monitor Setups

For setups involving multiple monitors, extend the window repositioning logic to consider virtual desktop size and available monitors using functions like OS.get_screen_count() and OS.get_screen_position().

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Testing and Iteration

Test the implementation across various resolutions and monitor configurations to ensure robustness. Logs can be integrated to track window positions, aiding in debugging and improvement.

Best Practices

• User Controls: Allow users to manually reset the window position via a hotkey or in-game menu option.
• Graceful Recovery: Provide feedback or automated solutions when unintended off-screen actions occur.
• Performance: Prevent continuous window reposition calculations to avoid performance bottlenecks.