examples/app/minesweeper/src/MinesweeperWindow.cpp

Note

This Source File belongs to Minesweeper Game Example. Please follow the link for example explanation.

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2025 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#include "MinesweeperWindow.h"
 
#include <AUI/Util/UIBuildingHelpers.h>
#include "CellView.h"
#include "NewGameWindow.h"
#include "AUI/Platform/AMessageBox.h"
#include "AUI/Util/ARandom.h"
 
MinesweeperWindow::MinesweeperWindow() : AWindow("Minesweeper", 100_dp, 100_dp) {
   setContents(Vertical {
     Horizontal {
       Centered::Expanding {
         _new<AButton>("New game...").connect(&AButton::clicked, me::newGame),
       },
     },
     _container<AStackedLayout>(
         { // also assign ".frame" ASS class in place
           mGrid = _new<AViewContainer>() << ".frame" }) });
 
   beginGame(10, 10, 20);
}
 
void MinesweeperWindow::openCell(int x, int y, bool doGameLoseIfBomb) {
   if (mReveal) {
       // beginGame(16, 10);
       return;
   }
   FieldCell& c = fieldAt(x, y);
 
   if (!mBombsPlanted) {
       for (int i = -1; i <= 1; ++i) {
           for (int j = -1; j <= 1; ++j) {
               if (isValidCell(x + i, y + j))
                   fieldAt(x + i, y + j) |= FieldCell::DONT_PLANT_BOMB_HERE;
           }
       }
 
       mBombsPlanted = true;
 
       ARandom r;
       for (int i = 0; i < mBombs;) {
           int x = r.nextInt() % mFieldColumns;
           int y = r.nextInt() % mFieldRows;
 
           if (fieldAt(x, y) == FieldCell::EMPTY) {
               fieldAt(x, y) |= FieldCell::HAS_BOMB;
               ++i;
           }
       }
   } else if (bool(c & (FieldCell::OPEN | FieldCell::HAS_FLAG))) {
       return;
   }
 
   if (bool(c & FieldCell::HAS_BOMB)) {
       if (doGameLoseIfBomb) {
           c |= FieldCell::RED_BG;
           mReveal = true;
           emit customCssPropertyChanged();
           redraw();
           AMessageBox::show(this, "You lost!", "You lost! Ahahahhaa!");
       }
       return;
   }
   c |= FieldCell::OPEN;
   mOpenedCells += 1;
 
   int bombCount = countBombsAround(x, y);
   c |= FieldCell(bombCount << 16);
   updateCellViewStyle(x, y);
 
   if (mOpenedCells + mBombs == mFieldRows * mFieldColumns) {
       mReveal = true;
       emit customCssPropertyChanged();
       redraw();
       AMessageBox::show(this, "You won!", "Respect +");
   }
 
   if (bombCount == 0) {
       for (int i = -1; i <= 1; ++i) {
           for (int j = -1; j <= 1; ++j) {
               if (!(i == 0 && j == 0)) {
                   int cellX = x + i;
                   int cellY = y + j;
                   if (isValidCell(cellX, cellY)) {
                       openCell(cellX, cellY, false);
                   }
               }
           }
       }
   }
}
void MinesweeperWindow::updateCellViewStyle(int x, int y) const {
   AUI_EMIT_FOREIGN(mGrid->getViews()[y * mFieldColumns + x], customCssPropertyChanged);
}
 
int MinesweeperWindow::countBombsAround(int x, int y) {
   int count = 0;
   for (int i = -1; i <= 1; ++i) {
       for (int j = -1; j <= 1; ++j) {
           if (!(i == 0 && j == 0)) {
               int cellX = x + i;
               int cellY = y + j;
 
               if (isValidCell(cellX, cellY)) {
                   if (bool(fieldAt(cellX, cellY) & FieldCell::HAS_BOMB)) {
                       count += 1;
                   }
               }
           }
       }
   }
   return count;
}
 
void MinesweeperWindow::newGame() { _new<NewGameWindow>(this)->show(); }
 

void MinesweeperWindow::beginGame(int columns, int rows, int bombs) {
   mOpenedCells = 0;
   mBombs = bombs;
   mFieldColumns = columns;
   mFieldRows = rows;
   mReveal = false;
   mBombsPlanted = false;
   mGrid->setLayout(std::make_unique<AGridLayout>(columns, rows));
   mField.clear();
   mField.resize(columns * rows);
 
   for (int i = 0; i < columns * rows; ++i) {
       int x = i % columns;
       int y = i / columns;
       auto cell = _new<CellView>(fieldAt(x, y));
 
       setupEventHandlers(x, y, cell);
       mGrid->addView(cell);
   }
 
   pack();
}
 
void MinesweeperWindow::setupEventHandlers(int x, int y, const _<CellView>& cell) {
   connect(cell->clicked, this, [&, x, y]() {
       if (mReveal) {
           return;
       }
       openCell(x, y, true);
   });

   connect(cell->clickedRight, this, [&, x, y]() {
       if (mReveal) {
           return;
       }
       auto& c = fieldAt(x, y);
       if (!(c & FieldCell::OPEN)) {
           c ^= FieldCell::HAS_FLAG;
           updateCellViewStyle(x, y);
       }
   });
 
}

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