Make mvv_lva to map pieces to their material score instead of abritrary matrix

Add time limits, use anyhow crate to improve error handling, remove depth limit on quiescence search

src/search/mod.rs

@@ -1,14 +1,30 @@
+use crate::movegen::r#move::Move;
+
 pub mod iterative_deepening;
 pub mod move_ordering;
 pub mod negamax;
 pub mod perft;
 pub mod quiescence;
+pub mod time;
 pub mod transposition_table;
 
 pub const MAX_DEPTH: u8 = 7;
-pub const QUIESCENCE_DEPTH: u8 = 3;
 pub const REMAINING_TIME_DEFAULT: u128 = 100000; // in ms
 pub const HARD_LIMIT_DIVISION: u128 = 10;
-pub const SOFT_LIMIT_DIVISION: u128 = 2;
+pub const SOFT_LIMIT_DIVISION: u128 = 20;
 pub const SOFT_EVAL_THRESHOLD: i32 = 500;
-pub const MAX_TT_SIZE: u64 = 1000000;
+pub const MAX_TT_SIZE: u64 = 2000000;
+
+pub struct SearchResult {
+    pub best_move: Option<Move>,
+    pub best_score: i32,
+}
+
+impl SearchResult {
+    pub const fn new(best_move: Option<Move>, best_score: i32) -> Self {
+        Self {
+            best_move,
+            best_score,
+        }
+    }
+}