adding move chenging to repl

1 files changed, 23 insertions, 13 deletions

diff --git a/src/main.cpp b/src/main.cpp
index a508042..bea30b0 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,9 +1,11 @@
+#include <algorithm>
 #include <cctype>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <print>
 #include <string>
+#include <vector>
 
 #include "board.hpp"
 #include "moves.hpp"
@@ -39,8 +41,7 @@ void PrintMoves(const std::vector<Move> &moves) {
   }
 }
 int main(int argc, char **argv) {
-  std::string startingFen =
-      "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
+  std::string startingFen = "rnbqkbnr/pppppppp/8/8/8/8/8/RNBQKBNR w KQkq - 0 1";
   if (argc < 1 || argc > 2) {
     printf("wrong arg count, use: ./chess [optinal starting fen]\n");
     return 1;
@@ -59,8 +60,6 @@ int main(int argc, char **argv) {
   };
   setBoardFen(startingFen, &b);
   printBoard(&b);
-  auto moves = GetLegalMoves(&b);
-  PrintMoves(moves);
   while (true) {
     std::cout << "> ";
     std::string command;
@@ -103,15 +102,26 @@ int main(int argc, char **argv) {
     }
 
     // we know its a valid chess pos
-    uint8_t fromFile = command[0] - 'A';
-    uint8_t fromRank = command[1] - '0';
-    uint8_t toFile = command[2] - 'A';
-    uint8_t toRank = command[3] - '0';
-    std::cout << static_cast<int>(fromFile) << "\n";
-    std::cout << static_cast<int>(fromRank) << "\n";
-    std::cout << static_cast<int>(toFile) << "\n";
-    std::cout << static_cast<int>(toRank) << "\n";
-    Move move = {fromRank, fromFile, toRank, toFile};
+    int fromFile = command[0] - 'A';
+    int fromRank = '8' - command[1];
+    int toFile = command[2] - 'A';
+    int toRank = '8' - command[3];
+    std::cout << fromFile << "\n";
+    std::cout << fromRank << "\n";
+    std::cout << toFile << "\n";
+    std::cout << toRank << "\n";
+    Move move = {
+        {static_cast<uint8_t>(fromRank), static_cast<uint8_t>(fromFile)},
+        {static_cast<uint8_t>(toRank), static_cast<uint8_t>(toFile)}};
+
+    auto moves = GetLegalMoves(&b);
+    if (std::ranges::find(moves, move) != moves.end()) {
+      std::cout << "Move is legal!\n";
+    } else {
+      std::cout << "Move is not legal!\n";
+      PrintMoves(moves);
+      continue;
+    }
     std::println();
   }
   return EXIT_SUCCESS;