chore: rename simulate into value

src/mcts/graph.rs

@@ -1,18 +1,18 @@
-use super::{policy, simulate, EdgePtr, Node, NodePtr, Params};
+use super::{policy, value, EdgePtr, Node, NodePtr, Params};
 use ataxx::MoveStore;
 
 pub struct Tree {
     root_pos: ataxx::Position,
     nodes: Vec<Node>,
     params: Params,
     policy: policy::Fn,
-    simulator: simulate::Fn,
+    simulator: value::Fn,
 }
 
 impl Tree {
     pub fn new(position: ataxx::Position) -> Tree {
+        let value = value::material;
         let policy = policy::handcrafted;
-        let simulator = simulate::material_count;
 
         let mut root = Node::new(-1);
         root.expand(&position, policy);
@@ -22,7 +22,7 @@ impl Tree {
             nodes: vec![root],
             params: Params::new(),
             policy,
-            simulator,
+            simulator: value,
         }
     }
 

src/mcts/mod.rs

@@ -3,7 +3,7 @@ pub mod policy;
 mod graph;
 mod node;
 mod params;
-mod simulate;
+mod value;
 
 pub use self::graph::*;
 pub use self::node::*;

src/mcts/simulate.rs → src/mcts/value.rs

@@ -1,6 +1,6 @@
 pub type Fn = fn(position: &ataxx::Position) -> f64;
 
-pub fn material_count(position: &ataxx::Position) -> f64 {
+pub fn material(position: &ataxx::Position) -> f64 {
     let stm = position.side_to_move;
 
     let stm_piece_n = position.bitboard(stm).cardinality();