added checks for possible moves horizontal and vertical; changed some var types

FC-Chess/FC-Chess.cpp

@@ -34,60 +34,101 @@ void FCC::Chess::startupGame()
     // preparing board: colors
     for (int8_t i = 0; i < 8; i++) {
         for (int j = 0; i < 2; i++) {
-            posColor[i][j] = (uint8_t)(PiecesColors::BLACK);
+            posColor[i][j] = PiecesColors::BLACK;
         }
         for (int j = 6; i < 8; i++) {
-            posColor[i][j] = (uint8_t)(PiecesColors::WHITE);
+            posColor[i][j] = PiecesColors::WHITE;
         }
         for (int j = 2; i < 7; i++) {
-            posColor[i][j] = (uint8_t)(PiecesColors::NONE);
+            posColor[i][j] = PiecesColors::NONE;
         }
     }
     // preparing board: pieces
     for (int8_t i = 0; i < 8; i++) {
-        posPieces[1][i] = (uint8_t)(Pieces::PAWN);
-        posPieces[6][i] = (uint8_t)(Pieces::PAWN);
+        posPieces[1][i] = Pieces::PAWN;
+        posPieces[6][i] = Pieces::PAWN;
     }
     for (int8_t i = 0; i < 2; i++) {
-        posPieces[i][0] = (uint8_t)(Pieces::ROOK);
-        posPieces[i][7] = (uint8_t)(Pieces::ROOK);
-        posPieces[i][1] = (uint8_t)(Pieces::KNIGHT);
-        posPieces[i][6] = (uint8_t)(Pieces::KNIGHT);
-        posPieces[i][2] = (uint8_t)(Pieces::BISHOP);
-        posPieces[i][5] = (uint8_t)(Pieces::BISHOP);
-        posPieces[i][3] = (uint8_t)(Pieces::KING);
-        posPieces[i][4] = (uint8_t)(Pieces::QUEEN);
+        posPieces[i][0] = Pieces::ROOK;
+        posPieces[i][7] = Pieces::ROOK;
+        posPieces[i][1] = Pieces::KNIGHT;
+        posPieces[i][6] = Pieces::KNIGHT;
+        posPieces[i][2] = Pieces::BISHOP;
+        posPieces[i][5] = Pieces::BISHOP;
+        posPieces[i][3] = Pieces::KING;
+        posPieces[i][4] = Pieces::QUEEN;
     }
 }
 
-bool FCC::Chess::checkIsEnemyOnField()
+bool FCC::Chess::checkIsEnemyOnField(uint8_t* x, uint8_t* y)
 {
     // Check if the selected piece/field unequals the target piece/field => is true then
-    if (posColor[selX][selY] != posColor[tarX][tarY])
+    if (posColor[*x][*y] != posColor[selX][selY])
     {
         return true;
     }
     return false;
 }
 
-bool FCC::Chess::checkSelectedPosInBounds()
+bool FCC::Chess::checkPosInBounds(uint8_t* x, uint8_t* y)
 {
     // check if X and Y values are below 8. No negative values have to be checked since the var type is unsigned int
-    if (selX <= 7 && selX <= 7)
+    if (*x <= 7 && *y <= 7)
     {
         return true;
     }
     return false;
 }
 
-bool FCC::Chess::checkTargetPosInBounds()
+void FCC::Chess::checkAllowedMoves()
 {
-    // check if X and Y values are below 8. No negative values have to be checked since the var type is unsigned int
-    if (tarX <= 7 && tarX <= 7)
+    // reset all allowed positions
+    for (uint8_t i = 0; i <= 7; i++)
     {
-        return true;
+        for (uint8_t j = 0; j <= 7; j++)
+        {
+            posPossible[i][j] = false;
+        }
+    }
+
+    // check piece and then check possible moves accordingly
+    switch (FCC::Chess::posPieces[FCC::Chess::selX][FCC::Chess::selY]) {
+        case FCC::Pieces::PAWN:
+            break;
+        case FCC::Pieces::ROOK:
+            break;
+        default:
+            tui.errOutput(&lang.errNoPieceOnPosition);
+            break;
+    }
+}
+
+void FCC::Chess::checkMovesHorizontal()
+{
+    for (uint8_t i = selX; i <= 7; i++)
+    {
+        if (checkIsEnemyOnField(&i, &selY)) break;
+        posPossible[i][selY] = true;
+    }
+    for (uint8_t i = selX; i >= 0; i--)
+    {
+        if (checkIsEnemyOnField(&i, &selY)) break;
+        posPossible[i][selY] = true;
+    }
+}
+
+void FCC::Chess::checkMovesVertical()
+{
+    for (uint8_t i = selY; i <= 7; i++)
+    {
+        if (checkIsEnemyOnField(&selX, &i)) break;
+        posPossible[selX][i] = true;
+    }
+    for (uint8_t i = selY; i >= 0; i--)
+    {
+        if (checkIsEnemyOnField(&selX, &i)) break;
+        posPossible[selX][i] = true;
     }
-    return false;
 }
 
 //void FCC::Chess::set_lang(FCC::Languages lang) {

FC-Chess/FC-Chess.h

@@ -37,6 +37,7 @@ namespace FCC
             void startup();
             void mainLoop();
             void testLoop();
+            void errOutput(std::string* errMessage);
     };
     
     class Chess
@@ -47,15 +48,18 @@ namespace FCC
             virtual ~Chess() = default;
 
             // vars
-            uint8_t posPieces[8][8], posColor[8][8], posPossible[8][8], selX, selY, tarX, tarY;     //tar = target, sel = selected, pos = possible
+            FCC::Pieces posPieces[8][8];
+            FCC::PiecesColors posColor[8][8];
+            bool posPossible[8][8];
+            uint8_t selX, selY, tarX, tarY;     //tar = target, sel = selected, pos = possible
             
             // funcs
             void mainMenu();
             void startupGame();
             void gameLoop();
-            void checkHorizontalMovementAllowed();
-            void checkVerticalMovementAllowed();
-            void checkDiagonalMovementAllowed();
+            // void checkHorizontalMovementAllowed();
+            // void checkVerticalMovementAllowed();
+            // void checkDiagonalMovementAllowed();
             //void set_lang(FCC::Languages lang);
             
         private:
@@ -70,9 +74,17 @@ namespace FCC
 
             // funcs
             void input();
-            bool checkIsEnemyOnField();
-            bool checkSelectedPosInBounds();
-            bool checkTargetPosInBounds();
+            bool checkIsEnemyOnField(uint8_t* x, uint8_t* y);
+            bool checkPosInBounds(uint8_t* x, uint8_t* y);
+            void checkAllowedMoves();
+            void checkMovesHorizontal();
+            void checkMovesVertical();
+            void checkMovesDiagonal();
+            void checkMovesKnight();
+            void checkMovesKing();
+            void checkMovesPawn();
+            void checkPosEqualsSelPos(uint8_t* x, uint8_t* y);
             void resetFieldColors();
+            void resetAllowedMovement();
     };
 }

FC-Chess/lang.h

@@ -16,5 +16,8 @@ namespace FCC
 			std::string gameForbiddenMove = "This move is not allowed.";
 			std::string credits = "FoxCreation Chess by SinusFox 2022.\nContact: admiralemser@gmail.com\nhttps://github.com/AdmiralEmser/FC-Chess";
 			std::string backButton = "Back <--";
+
+			// error texts
+			std::string errNoPieceOnPosition = "Error: Empty position.";
 	};
 }

FC-Chess/tui.cpp

@@ -17,3 +17,8 @@ void FCC::TUI::testLoop()
     std::cout << "♔" << std::endl;
     //std::cout << L"♔";
 }
+
+void FCC::TUI::errOutput(std::string* errMessage)
+{
+    std::cout << *errMessage;
+}