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system_fn: port exit_on_esc
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1 changed files with 12 additions and 15 deletions
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@ -4,20 +4,17 @@ use legion::prelude::*;
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pub fn exit_on_esc_system(resources: &mut Resources) -> Box<dyn Schedulable> {
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let mut keyboard_input_event_reader = resources.get_event_reader::<KeyboardInput>();
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SystemBuilder::new("exit_on_esc")
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.read_resource::<Events<KeyboardInput>>()
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.write_resource::<Events<AppExit>>()
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.build(
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move |_, _, (ref keyboard_input_events, ref mut app_exit_events), _| {
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for event in keyboard_input_event_reader.iter(keyboard_input_events) {
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if let Some(virtual_key_code) = event.virtual_key_code {
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if event.state == ElementState::Pressed
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&& virtual_key_code == VirtualKeyCode::Escape
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{
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app_exit_events.send(AppExit);
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}
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}
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(move |keyboard_input_events: Resource<Events<KeyboardInput>>,
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mut app_exit_events: ResourceMut<Events<AppExit>>| {
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for event in keyboard_input_event_reader.iter(&keyboard_input_events) {
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if let Some(virtual_key_code) = event.virtual_key_code {
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if event.state == ElementState::Pressed
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&& virtual_key_code == VirtualKeyCode::Escape
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{
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app_exit_events.send(AppExit);
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}
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},
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)
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}
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}
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})
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.system_named("exit_on_esc")
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}
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