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main.rs
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main.rs
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use settings::Settings;
use simulation::Simulation;
use slider::Slider;
use yew::html::Scope;
use yew::{html, Component, Context, Html};
mod boid;
mod math;
mod settings;
mod simulation;
mod slider;
pub enum Msg {
ChangeSettings(Settings),
ResetSettings,
RestartSimulation,
TogglePause,
}
pub struct App {
settings: Settings,
generation: usize,
paused: bool,
}
impl Component for App {
type Message = Msg;
type Properties = ();
fn create(_ctx: &Context<Self>) -> Self {
Self {
settings: Settings::load(),
generation: 0,
paused: false,
}
}
fn update(&mut self, _ctx: &Context<Self>, msg: Msg) -> bool {
match msg {
Msg::ChangeSettings(settings) => {
self.settings = settings;
self.settings.store();
true
}
Msg::ResetSettings => {
self.settings = Settings::default();
Settings::remove();
true
}
Msg::RestartSimulation => {
self.generation = self.generation.wrapping_add(1);
true
}
Msg::TogglePause => {
self.paused = !self.paused;
true
}
}
}
fn view(&self, ctx: &Context<Self>) -> Html {
let Self {
ref settings,
generation,
paused,
..
} = *self;
html! {
<>
<h1 class="title">{ "Boids" }</h1>
<Simulation settings={settings.clone()} {generation} {paused} />
{ self.view_panel(ctx.link()) }
</>
}
}
}
impl App {
fn view_panel(&self, link: &Scope<Self>) -> Html {
let pause_text = if self.paused { "Resume" } else { "Pause" };
html! {
<div class="panel">
{ self.view_settings(link) }
<div class="panel__buttons">
<button onclick={link.callback(|_| Msg::TogglePause)}>{ pause_text }</button>
<button onclick={link.callback(|_| Msg::ResetSettings)}>{ "Use Defaults" }</button>
<button onclick={link.callback(|_| Msg::RestartSimulation)}>{ "Restart" }</button>
</div>
</div>
}
}
fn view_settings(&self, link: &Scope<Self>) -> Html {
let Self { settings, .. } = self;
// This helper macro creates a callback which applies the new value to the current settings and sends `Msg::ChangeSettings`.
// Thanks to this, we don't need to have "ChangeBoids", "ChangeCohesion", etc. messages,
// but it comes at the cost of cloning the `Settings` struct each time.
macro_rules! settings_callback {
($link:expr, $settings:ident; $key:ident as $ty:ty) => {{
let settings = $settings.clone();
$link.callback(move |value| {
let mut settings = settings.clone();
settings.$key = value as $ty;
Msg::ChangeSettings(settings)
})
}};
($link:expr, $settings:ident; $key:ident) => {
settings_callback!($link, $settings; $key as f64)
}
}
html! {
<div class="settings">
<Slider label="Number of Boids"
min=1.0 max=600.0
onchange={settings_callback!(link, settings; boids as usize)}
value={settings.boids as f64}
/>
<Slider label="View Distance"
max=500.0 step=10.0
onchange={settings_callback!(link, settings; visible_range)}
value={settings.visible_range}
/>
<Slider label="Spacing"
max=100.0
onchange={settings_callback!(link, settings; min_distance)}
value={settings.min_distance}
/>
<Slider label="Max Speed"
max=50.0
onchange={settings_callback!(link, settings; max_speed)}
value={settings.max_speed}
/>
<Slider label="Cohesion"
max=0.5 percentage=true
onchange={settings_callback!(link, settings; cohesion_factor)}
value={settings.cohesion_factor}
/>
<Slider label="Separation"
max=1.0 percentage=true
onchange={settings_callback!(link, settings; separation_factor)}
value={settings.separation_factor}
/>
<Slider label="Alignment"
max=0.5 percentage=true
onchange={settings_callback!(link, settings; alignment_factor)}
value={settings.alignment_factor}
/>
<Slider label="Turn Speed"
max=1.5 percentage=true
onchange={settings_callback!(link, settings; turn_speed_ratio)}
value={settings.turn_speed_ratio}
/>
<Slider label="Color Adaption"
max=1.5 percentage=true
onchange={settings_callback!(link, settings; color_adapt_factor)}
value={settings.color_adapt_factor}
/>
</div>
}
}
}
fn main() {
yew::Renderer::<App>::new().render();
}