Bevy adapt mobile to desktop

When to use

Load this when a touch-first game gains a window, mouse, and keyboard. Window setup is bevy-platform-desktop.

ECS shape

• Window: Window, WindowMode, and PrimaryWindow.
• Input: keyboard, mouse, and gamepad features are named on the crate page and already used by bevy-input-handling.
• Pointer: CursorOptions on the primary window. CursorGrabMode::None, Confined, or Locked.

Desktop choices

Need	Bevy idiom
On-screen buttons	Keyboard and mouse via bevy-input-handling, writing the same intent component.
Wider layout	A wider WindowResolution on the primary Window.
Pointer lock	CursorOptions.grab_mode = CursorGrabMode::Locked and visible = false.

Scope

• Keyboard and mouse write a MoveIntent component. Touch buttons can keep writing that same component.
• Window mode, resolution, present mode, and cursor grab live on the primary window entity.

Examples

[package]
name = "desktop_port"
version = "0.1.0"
edition = "2021"

[dependencies]
bevy = "0.20"

Open a windowed 1920x1080 view and lock the pointer while aiming.

use bevy::window::{
    CursorGrabMode, CursorOptions, MonitorSelection, PresentMode, PrimaryWindow, WindowMode,
    WindowResolution,
};

fn desktop_window(mut windows: Query<&mut Window, With<PrimaryWindow>>) {
    for mut window in &mut windows {
        window.mode = WindowMode::Windowed;
        window.resolution = WindowResolution::new(1920, 1080);
        window.title = "Desktop".to_string();
        window.present_mode = PresentMode::AutoVsync;
    }
}

fn unlock_framerate(mut windows: Query<&mut Window, With<PrimaryWindow>>) {
    for mut window in &mut windows {
        window.present_mode = PresentMode::AutoNoVsync;
    }
}