70 lines
2.0 KiB
Rust
70 lines
2.0 KiB
Rust
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//! Shared game code: data definitions, components, map loading and network protocol.
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pub mod components;
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pub mod data;
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pub mod grid;
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pub mod map;
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pub mod protocol;
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use std::path::{Path, PathBuf};
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use bevy::prelude::*;
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pub use data::GameData;
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/// Map loaded when no other map is configured, relative to the assets directory.
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pub const DEFAULT_MAP: &str = "maps/station.tmx";
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pub const DEFAULT_PORT: u16 = 5000;
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/// Bump when the protocol changes in incompatible ways.
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pub const PROTOCOL_ID: u64 = 1;
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/// Locates the `assets` directory.
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///
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/// Uses `GAME_ASSETS_DIR` if set, otherwise searches upwards from the working
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/// directory and the executable for a directory named `assets` containing `data/`.
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pub fn assets_dir() -> PathBuf {
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if let Some(dir) = std::env::var_os("GAME_ASSETS_DIR") {
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return dir.into();
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}
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let starts = [
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std::env::current_dir().ok(),
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std::env::current_exe().ok(),
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Some(PathBuf::from(env!("CARGO_MANIFEST_DIR"))),
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];
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starts
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.into_iter()
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.flatten()
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.find_map(|start| {
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start
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.ancestors()
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.map(|p| p.join("assets"))
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.find(|p| p.join("data").is_dir())
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})
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.unwrap_or_else(|| PathBuf::from("assets"))
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}
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/// Absolute path for an asset-relative path.
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pub fn asset_path(relative: impl AsRef<Path>) -> PathBuf {
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assets_dir().join(relative)
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}
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/// Loads [`GameData`] and registers the network protocol.
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pub struct CorePlugin;
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impl Plugin for CorePlugin {
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fn build(&self, app: &mut App) {
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let dir = assets_dir().join("data");
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let data = GameData::load_dir(&dir).unwrap_or_else(|e| panic!("{e}"));
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info!(
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"loaded {} items, {} recipes, {} buildings, {} skills from `{}`",
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data.items.len(),
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data.recipes.len(),
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data.buildings.len(),
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data.skills.len(),
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dir.display()
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);
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app.insert_resource(data)
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.add_plugins(protocol::ProtocolPlugin);
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}
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}
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