First attempts for moving player's unit

src/Game.cpp

@@ -47,8 +47,8 @@ void Game::print_field(int cursorX = -1, int cursorY = -1) {
     clearScreen();
     for (int i = 0; i <= SIZE_FOR_ARRAY; ++i) {
         for (int j = 0; j <= SIZE_FOR_ARRAY; ++j) {
-            if (i == cursorY && j == cursorX && field[i][j] == PLAYER_CELL) {
-                // Highlight player's unit in green when selected
+            //  FOR FURTHER DEVELOPMENT: field[i][j] == PLAYER_CELL
+            if (i == cursorY && j == cursorX) {
                 std::cout << "\033[32m" << field[i][j] << "\033[0m ";
             }
             else {
@@ -141,7 +141,12 @@ void Game::init() {
     }
 }
 
+static bool check_lose_win(auto& player) {
+    return player.empty();
+}
+
 void Game::play() {
+    bool is_selected = false;
     bool is_active = true;
     bool unit_selected = false;
 
@@ -155,14 +160,21 @@ void Game::play() {
         cursorY = y;
     }
     
-    while (is_active) {
+    if (is_active) {
+
+        if (check_lose_win(player_army)) {
+            std::cout << "YOU LOSE";
+            exit(0);
+        }
+
+        while (!is_selected) {
             print_field(cursorX, cursorY);
             std::cout << "Your turn! Use 'a' or 's' to select a unit, ENTER to confirm, ESC to exit.\n";
 
             int key = _getch();
             if (key == ESC_KEY) {
                 std::cout << "Exit\n";
-            is_active = false;
+                is_selected = true;
                 break;
             }
 
@@ -189,10 +201,32 @@ void Game::play() {
                     #ifdef DEBUG
                     std::cout << "Unit selected at (" << cursorX << ", " << cursorY << ")!\n";
                     #endif // DEBUG
-                is_active = false;
+                    is_selected = true;
                 }
                 break;
             default: continue;
             }
         }
+
+        bool is_moved = false;
+        while (!is_moved) {
+            print_field(cursorX, cursorY);
+            std::cout << "Let's move!" << std::endl;
+            int key = _getch();
+            if (key == ESC_KEY) {
+                std::cout << "Exit\n";
+                break;
+            }
+
+            switch (key) {
+                case UP_KEY:    cursorY = (cursorY == 0) ? SIZE_FOR_ARRAY : cursorY - 1; break;
+                case DOWN_KEY:  cursorY = (cursorY == SIZE_FOR_ARRAY) ? 0 : cursorY + 1; break;
+                case LEFT_KEY:  cursorX = (cursorX == 0) ? SIZE_FOR_ARRAY : cursorX - 1; break;
+            }
+            is_moved = true;
+
+        }
+        
+
+    }
 }