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//! This module is responsible for loading the tilesets into the game and storing them in the `TileAtlasStore` resource.

use bevy::prelude::*;

use super::{events::LoadedTilesetData, storage::GameData};

/// Load the tilesets into the game and store a handle under the `unique_id`.
#[allow(clippy::needless_pass_by_value, clippy::module_name_repetitions)]
pub fn load_tilesets(
    mut er_tileset_df: EventReader<LoadedTilesetData>,
    mut texture_atlases: ResMut<Assets<TextureAtlas>>,
    mut game_data: ResMut<GameData>,
    asset_server: Res<AssetServer>,
) {
    for tileset in er_tileset_df.read() {
        let unique_id = &tileset.tileset_data.header.unique_id;
        let tileset = &tileset.tileset_data.data;

        let texture_handle = asset_server.load(&tileset.path);
        let texture_atlas = TextureAtlas::from_grid(
            texture_handle,
            Vec2::new(tileset.tile_width, tileset.tile_height),
            tileset.tileset_width,
            tileset.tileset_height,
            tileset.get_padding(),
            tileset.get_offset(),
        );

        let atlas_handle = texture_atlases.add(texture_atlas);

        game_data
            .tile_atlas
            .insert(String::from(unique_id), atlas_handle);
    }
}