Add mouse grab example (#4114)

Fixes #4094
This commit is contained in:
Emerson MX 2022-03-08 17:14:08 +00:00
parent 2b11202614
commit 6ce8e50068
3 changed files with 31 additions and 0 deletions

View file

@ -430,6 +430,10 @@ path = "examples/input/mouse_input.rs"
name = "mouse_input_events"
path = "examples/input/mouse_input_events.rs"
[[example]]
name = "mouse_grab"
path = "examples/input/mouse_grab.rs"
[[example]]
name = "touch_input"
path = "examples/input/touch_input.rs"

View file

@ -203,6 +203,7 @@ Example | File | Description
`keyboard_modifiers` | [`input/keyboard_modifiers.rs`](./input/keyboard_modifiers.rs) | Demonstrates using key modifiers (ctrl, shift)
`mouse_input` | [`input/mouse_input.rs`](./input/mouse_input.rs) | Demonstrates handling a mouse button press/release
`mouse_input_events` | [`input/mouse_input_events.rs`](./input/mouse_input_events.rs) | Prints out all mouse events (buttons, movement, etc.)
`mouse_grab` | [`input/mouse_grab.rs`](./input/mouse_grab.rs) | Demonstrates how to grab the mouse, locking the cursor to the app's screen
`touch_input` | [`input/touch_input.rs`](./input/touch_input.rs) | Displays touch presses, releases, and cancels
`touch_input_events` | [`input/touch_input_events.rs`](./input/touch_input_events.rs) | Prints out all touch inputs

View file

@ -0,0 +1,26 @@
use bevy::prelude::*;
fn main() {
App::new()
.add_plugins(DefaultPlugins)
.add_system(grab_mouse)
.run();
}
// This system grabs the mouse when the left mouse button is pressed
// and releases it when the escape key is pressed
fn grab_mouse(
mut windows: ResMut<Windows>,
mouse: Res<Input<MouseButton>>,
key: Res<Input<KeyCode>>,
) {
let window = windows.get_primary_mut().unwrap();
if mouse.just_pressed(MouseButton::Left) {
window.set_cursor_visibility(false);
window.set_cursor_lock_mode(true);
}
if key.just_pressed(KeyCode::Escape) {
window.set_cursor_visibility(true);
window.set_cursor_lock_mode(false);
}
}