here's what i have so far

1 files changed, 27 insertions, 0 deletions

diff --git a/ai/src/lib.rs b/ai/src/lib.rs
new file mode 100644
index 0000000..4e22708
--- /dev/null
+++ b/ai/src/lib.rs
@@ -0,0 +1,27 @@
+pub use model::{CheckersBitBoard, Move, PieceColor, PossibleMoves};
+
+const KING_WORTH: u32 = 2;
+
+fn eval_position(board: CheckersBitBoard) -> f32 {
+	let light_pieces = board.pieces_bits() & !board.color_bits();
+	let dark_pieces = board.pieces_bits() & board.color_bits();
+
+	let light_peasants = light_pieces & !board.king_bits();
+	let dark_peasants = dark_pieces & !board.king_bits();
+
+	let light_kings = light_pieces & board.king_bits();
+	let dark_kings = dark_pieces & board.king_bits();
+
+	// if we assume the black player doesn't exist, how good is this for white?
+	let light_eval =
+		(light_peasants.count_ones() as f32) + ((light_kings.count_ones() * KING_WORTH) as f32);
+	let dark_eval =
+		(dark_peasants.count_ones() as f32) + ((dark_kings.count_ones() * KING_WORTH) as f32);
+
+	// avoiding a divide by zero error
+	if dark_eval + light_eval != 0.0 {
+		light_eval / (dark_eval + light_eval)
+	} else {
+		0.0
+	}
+}