chore: make games dependant on feature

Cargo.toml

@@ -10,6 +10,14 @@ categories = ["algorithms", "games"]
 repository = "https://github.com/KarelPeeters/board-game-rs"
 
 [features]
+games = [
+    "dep:chess",
+    "dep:arimaa_engine_step",
+    "dep:once_cell",
+    "dep:lazy_static",
+    "dep:static_assertions",
+    "dep:nohash-hasher",
+]
 default = []
 
 [dependencies]
@@ -25,13 +33,12 @@ num_cpus = "1.15.0"
 
 # TODO the chess crate is heavy (and takes a long time to build, see below "temp fix"), maybe replace it with
 #  cozy-chess or shakmaty
-chess = "3.2.0"
-# TODO make arimaa optional with a feature
-arimaa_engine_step = { version = "1.0.1" } # , path = "../arimaa-engine-step"
-once_cell = "1.18.0"
-lazy_static = "1.4.0"
-static_assertions = "1.1.0"
-nohash-hasher = "0.2.0"
+chess = { version = "3.2.0", optional = true }
+arimaa_engine_step = { version = "1.0.1", optional = true } # , path = "../arimaa-engine-step"
+once_cell = { version = "1.18.0", optional = true }
+lazy_static = { version = "1.4.0", optional = true }
+static_assertions = { version = "1.1.0", optional = true }
+nohash-hasher = { version = "0.2.0", optional = true }
 
 # temporary fix until https://github.com/jordanbray/chess/pull/67 is merged
 [profile.dev.build-override]
@@ -47,3 +54,11 @@ debug = true
 [profile.release-with-debug]
 inherits = "release"
 debug = true
+
+[[bin]]
+name = "bench"
+required-features = ["games"]
+
+[[bin]]
+name = "go_split_perft"
+required-features = ["games"]

src/bin/bench.rs

@@ -2,14 +2,13 @@
 
 use std::time::Instant;
 
-use itertools::Itertools;
-use rand::rngs::SmallRng;
-use rand::SeedableRng;
-
 use board_game::ai::mcts::mcts_build_tree;
 use board_game::games::ataxx::AtaxxBoard;
 use board_game::games::chess::ChessBoard;
 use board_game::games::sttt::STTTBoard;
+use itertools::Itertools;
+use rand::rngs::SmallRng;
+use rand::SeedableRng;
 
 fn main() {
     bench("mcts_sttt", || {

src/lib.rs

@@ -85,7 +85,11 @@
 //! ```
 
 // export used game crates
+
+#[cfg(feature = "games")]
 pub use arimaa_engine_step;
+
+#[cfg(feature = "games")]
 pub use chess;
 
 pub mod board;
@@ -95,9 +99,14 @@ pub mod pov;
 pub mod wdl;
 
 pub mod ai;
+
+#[cfg(feature = "games")]
 pub mod games;
+
+#[cfg(feature = "games")]
 pub mod heuristic;
 
 pub mod util;
 
+#[cfg(feature = "games")]
 pub mod interface;

tests/mod.rs

@@ -1,3 +1,7 @@
+
+#[cfg(feature="games")]
 pub mod ai;
+
+#[cfg(feature="games")]
 pub mod board;
 pub mod util;