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//! Describes the concept of a [`RenderPhase`] and [`PhaseItem`]

mod draw;

pub use draw::*;

/// A resource to collect and sort draw requests for specific [`PhaseItems`](PhaseItem).
pub struct RenderPhase<I: PhaseItem> {
    pub items: Vec<I>,
}

impl<I: PhaseItem> Default for RenderPhase<I> {
    fn default() -> Self {
        Self { items: Vec::new() }
    }
}

impl<I: PhaseItem> RenderPhase<I> {
    /// Adds a [`PhaseItem`] to this render phase.
    #[inline]
    pub fn add(&mut self, item: I) {
        self.items.push(item);
    }

    /// Sorts all of its [`PhaseItems`](PhaseItem).
    pub fn sort(&mut self) {
        self.items.sort_by_key(|d| d.sort_key());
    }
}