roguelike-game/src/gui/drop_item_menu.rs

use ::rltk::prelude::*;
use ::rltk::Rltk;
use ::specs::prelude::*;

use super::{get_item_display_name, item_result_menu, ItemMenuResult};
use crate::components::InBackpack;
use crate::State;

pub fn drop_item_menu(gs: &mut State, ctx: &mut Rltk) -> (ItemMenuResult, Option<Entity>) {
    let mut draw_batch = DrawBatch::new();

    let player_entity = gs.ecs.fetch::<Entity>();
    let backpack = gs.ecs.read_storage::<InBackpack>();
    let entities = gs.ecs.entities();

    let mut items: Vec<(Entity, String)> = Vec::new();
    (&entities, &backpack)
        .join()
        .filter(|item| item.1.owner == *player_entity)
        .for_each(|item| items.push((item.0, get_item_display_name(&gs.ecs, item.0))));

    let result = item_result_menu(
        &mut draw_batch,
        "Drop which item?",
        items.len(),
        &items,
        ctx.key,
    );

    draw_batch
        .submit(6000)
        .expect("Failed to batch render Drop Item Menu");

    result
}