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system_fn: port exit_on_esc

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This commit is contained in:
Carter Anderson 2020-04-30 16:29:52 -07:00
parent e5a99fde4f
commit b11a7f177b
1 changed files with 12 additions and 15 deletions
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27
crates/bevy_input/src/system.rs
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@ -4,20 +4,17 @@ use legion::prelude::*;
pub fn exit_on_esc_system(resources: &mut Resources) -> Box<dyn Schedulable> { pub fn exit_on_esc_system(resources: &mut Resources) -> Box<dyn Schedulable> {
let mut keyboard_input_event_reader = resources.get_event_reader::<KeyboardInput>(); let mut keyboard_input_event_reader = resources.get_event_reader::<KeyboardInput>();
SystemBuilder::new("exit_on_esc") (move |keyboard_input_events: Resource<Events<KeyboardInput>>,
.read_resource::<Events<KeyboardInput>>() mut app_exit_events: ResourceMut<Events<AppExit>>| {
.write_resource::<Events<AppExit>>() for event in keyboard_input_event_reader.iter(&keyboard_input_events) {
.build( if let Some(virtual_key_code) = event.virtual_key_code {
move |_, _, (ref keyboard_input_events, ref mut app_exit_events), _| { if event.state == ElementState::Pressed
for event in keyboard_input_event_reader.iter(keyboard_input_events) { && virtual_key_code == VirtualKeyCode::Escape
if let Some(virtual_key_code) = event.virtual_key_code { {
if event.state == ElementState::Pressed app_exit_events.send(AppExit);
&& virtual_key_code == VirtualKeyCode::Escape
{
app_exit_events.send(AppExit);
}
}
} }
}, }
) }
})
.system_named("exit_on_esc")
} }