vox_engine 0.3.0

use getset::{CopyGetters, Getters, Setters};
use rapier3d::glamx::{Vec3, Vec4, vec4};

use super::AnimationType;

use dear_imgui_reflect::ImGuiReflect;

impl ImGuiReflect for AnimationType {
    fn imgui_reflect(
        &mut self,
        inspector: &mut dear_imgui_reflect::Inspector<'_, '_>,
        label: &str,
    ) -> bool {
        let ui = inspector.ui();
        let mut changed = false;

        match self {
            AnimationType::Follow(entity) => {
                ui.text(format!("{label}: Follow"));
                ui.with_indent(|| {
                    changed |= entity
                        .borrow_mut()
                        .entity_mut()
                        .imgui_reflect(inspector, "Entity");
                });
            }
            AnimationType::Flicker => {
                ui.text(format!("{label}: Flicker"));
            }
        }

        changed
    }
}

impl Default for AnimationType {
    fn default() -> Self {
        AnimationType::Flicker
    }
}

#[derive(Clone, Default, CopyGetters, Setters, Getters, ImGuiReflect)]
pub struct Light {
    #[getset(get_copy = "pub with_prefix")]
    position: Vec3,
    #[getset(get_copy = "pub with_prefix")]
    color_intensity: Vec4,

    #[getset(get_copy = "pub with_prefix")]
    lifetime: Option<f64>,

    position_animation: Option<AnimationType>,
    color_animation: Option<AnimationType>,
}

impl Light {
    pub fn new(
        position: Vec3,
        color_intensity: Vec4,
        lifetime: Option<f64>,
        position_animation: Option<AnimationType>,
        color_animation: Option<AnimationType>,
    ) -> Self {
        Self {
            position,
            color_intensity,

            lifetime,

            position_animation,
            color_animation,
        }
    }
}

impl Light {
    pub fn apply_position_animation(&mut self) {
        match &mut self.position_animation {
            None => {}
            Some(AnimationType::Follow(entity)) => {
                self.position = entity.borrow().entity().get_position();
            }
            _ => {}
        }
    }

    pub fn apply_color_animation(&mut self) {
        match &mut self.color_animation {
            None => {}
            Some(_color_animation) => {}
        }
    }

    pub fn decay(&mut self) {
        let current_lifetime = self.lifetime.as_ref().unwrap();
        let intensity = self.color_intensity.w;

        let percentage_decrease = intensity / *current_lifetime as f32;

        self.lifetime = Some(*current_lifetime - 1.0);
        self.color_intensity =
            self.color_intensity - vec4(0.0, 0.0, 0.0, percentage_decrease as f32);
    }
}