implemented some stuff

cpp/src/pieces/piece.cpp

@@ -0,0 +1,19 @@
+#include "piece.hpp"
+
+#include "../board.hpp"
+
+std::vector<Move> pawn_moves(Board b) {
+    return {};
+}
+
+std::vector<Move> legal_moves(Piece p, Board b) {
+    switch (p) {
+    case Piece::Pawn:
+        return pawn_moves(b);
+    case Piece::Bishop:
+        break;
+    default:
+        break;
+    }
+    return {};
+}

cpp/src/pieces/piece.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "../move.hpp"
+
+#include <cstdint>
+#include <vector>
+
+enum Piece : int8_t {
+    None = 0,
+    King = 1,
+    Pawn = 2,
+    Knigt = 3,
+    Bishop = 4,
+    Rook = 5,
+    Queen = 6,
+};
+
+enum Colour : int8_t {
+    White = 8,
+    Black = 16,
+};
+
+class Board;
+std::vector<Move> legal_moves(Piece p, Board b);