use bevy_inspector_egui::{Inspectable, InspectorPlugin};

use bevy_inspector_egui::{Inspectable, InspectorPlugin, WorldInspectorPlugin};

        .add_plugin(WorldInspectorPlugin::new())

        .add_system(update_heat_color.system())

struct Heat {
    amount: f32,
}

impl Heat {
    fn inc(&mut self, value: f32) {
        self.amount = (self.amount + value).clamp(0., 1.);
    }
}

        .insert(Heat { amount: 0. })

            &mut Heat,

                for (mut velocity, mass_props, mut damping, _) in rigid_bodies.iter_mut() {

                for (mut velocity, mass_props, mut damping, _, mut heat) in rigid_bodies.iter_mut()
                {

                    heat.inc(0.1)

                for (_, _, mut damping, _) in rigid_bodies.iter_mut() {

                for (_, _, mut damping, _, mut heat) in rigid_bodies.iter_mut() {

                    heat.inc(-1.)

                for (mut velocity, mass_props, _, _) in rigid_bodies.iter_mut() {

                for (mut velocity, mass_props, _, _, mut heat) in rigid_bodies.iter_mut() {

                    heat.inc(0.1)

                for (_, _, mut damping, mut forces) in rigid_bodies.iter_mut() {

                for (_, _, mut damping, mut forces, mut heat) in rigid_bodies.iter_mut() {

                    heat.inc(0.01)

fn update_heat_color(mut colors: Query<(&Heat, &mut ShapeColors), (With<Player>, Changed<Heat>)>) {
    for (heat, mut colors) in colors.iter_mut() {
        // TODO: make it work
        let percent = heat.amount;
        colors.main = Color::RED * percent + Color::MIDNIGHT_BLUE * (1. - percent);
    }
}