bevy_codex/main_menu/
systems.rs

1use bevy::{color::palettes::css::BLACK, prelude::*, window::PrimaryWindow};
2
3use bevy_lunex::{
4    prelude::{MainUi, Pickable, Rl, UiNodeTreeInitTrait, UiTree},
5    Base, MovableByCamera, PackageLayout, UiClickEvent, UiImage2dBundle, UiLayout, UiLink,
6    UiTreeBundle,
7};
8
9use crate::{
10    loading::components::Loading,
11    main_menu::components::MainMenuButton,
12    resources::CodexSettings,
13    settings::components::SettingsPg,
14    widgets::{
15        button::components::{CustomButton, CustomButtonRef},
16        panel::components::Panel,
17    },
18};
19
20use super::components::MainMenu;
21
22pub fn build_main_menu(
23    mut commands: Commands,
24    asset_server: Res<AssetServer>,
25    query: Query<Entity, Added<MainMenu>>,
26    window: Query<&Window, With<PrimaryWindow>>,
27    codex_settings: Res<CodexSettings>,
28) {
29    for route_entity in &query {
30        if let Ok(resolution) = window.get_single() {
31            let r_size = (resolution.width(), resolution.height());
32            commands
33                .entity(route_entity)
34                .insert(SpatialBundle::default())
35                .with_children(|route| {
36                    route
37                        .spawn((
38                            UiTreeBundle::<MainUi>::from(UiTree::new2d("MainMenu")),
39                            MovableByCamera,
40                        ))
41                        .with_children(|ui| {
42                            let root = UiLink::<MainUi>::path("Root");
43                            ui.spawn((
44                                root.clone(),
45                                UiLayout::window().size(r_size).pack::<Base>(),
46                            ));
47                            let background = UiLink::<MainUi>::path("Background");
48
49                            ui.spawn((
50                                background.clone(),
51                                UiLayout::window_full().pack::<Base>(),
52                                Pickable::IGNORE,
53                                UiImage2dBundle::from(asset_server.load("Level_base_diffuse.png")),
54                            ));
55                            let content = vec![
56                                CustomButtonRef {
57                                    link: MainMenuButton::NewGame.str(),
58                                },
59                                CustomButtonRef {
60                                    link: MainMenuButton::Settings.str(),
61                                },
62                                CustomButtonRef {
63                                    link: MainMenuButton::QuitGame.str(),
64                                },
65                            ];
66                            ui.spawn((
67                                background.add("Panel"),
68                                UiLayout::window()
69                                    .size(Rl((40.0, 80.0)))
70                                    .pos(Rl((10.0, 10.0)))
71                                    .pack::<Base>(),
72                                Panel {
73                                    text: Some(codex_settings.title.to_string()),
74                                    color: BLACK.into(),
75                                    content,
76                                    ..default()
77                                },
78                                Pickable::IGNORE,
79                            ));
80                        });
81                });
82        }
83    }
84}
85
86pub fn main_menu_button_clicked_system(
87    mut commands: Commands,
88    mut events: EventReader<UiClickEvent>,
89    query: Query<&CustomButton>,
90    menu_q: Query<Entity, With<MainMenu>>,
91    mut exit: EventWriter<bevy::app::AppExit>,
92) {
93    for event in events.read() {
94        if let Ok(ent) = menu_q.get_single() {
95            if let Ok(button) = query.get(event.target) {
96                if button.text == MainMenuButton::NewGame.str() {
97                    commands.entity(ent).despawn_recursive();
98                    commands.spawn(Loading(Some("Loading...".to_string())));
99                } else if button.text == MainMenuButton::Settings.str() {
100                    commands.entity(ent).despawn_recursive();
101                    commands.spawn(SettingsPg);
102                } else if button.text == MainMenuButton::QuitGame.str() {
103                    commands.entity(event.target).despawn_recursive();
104                    exit.send(bevy::app::AppExit::Success);
105                }
106            }
107        }
108    }
109}
bevy_codex/main_menu/systems.rs

bevy_codex/main_menu/
systems.rs
