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MainGUI.cpp
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MainGUI.cpp
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#include "MainGUI.h"
#include "wx/wx.h"
#include <algorithm>
#include <memory>
#include <random>
#include <unordered_map>
MainGUI::MainGUI() : wxFrame(nullptr, wxID_ANY, "Minesweeper", wxPoint(30, 30), wxSize(800, 600)) {
// Create the menu bar
wxMenuBar *menuBar = new wxMenuBar();
this->SetMenuBar(menuBar);
// Create the menu bar items for game
wxMenu *gameMenu = new wxMenu();
gameMenu->Append(ID_NEW_GAME, "Restart");
gameMenu->Append(ID_CLOSE_GAME, "Exit");
menuBar->Append(gameMenu, "Game");
// Create the menu bar items for difficulty
wxMenu *difficultyMenu = new wxMenu();
difficultyMenu->Append(ID_EASY, "Easy");
difficultyMenu->Append(ID_MEDIUM, "Medium");
difficultyMenu->Append(ID_HARD, "Hard");
menuBar->Append(difficultyMenu, "Difficulty");
// Bind the event handlers to the menu items
menuBar->Bind(wxEVT_MENU, &MainGUI::NewGame, this, ID_NEW_GAME);
menuBar->Bind(wxEVT_MENU, &MainGUI::CloseGame, this, ID_CLOSE_GAME);
menuBar->Bind(wxEVT_MENU, &MainGUI::SetDifficulty, this, ID_EASY);
menuBar->Bind(wxEVT_MENU, &MainGUI::SetDifficulty, this, ID_MEDIUM);
menuBar->Bind(wxEVT_MENU, &MainGUI::SetDifficulty, this, ID_HARD);
// Create a sizer grid to displace the buttons on
buttonGrid = new wxGridSizer(fieldWidth, fieldHeight, 0, 0);
this->SetSizer(buttonGrid);
// Generate a new field to start the game
GenerateNewField(fieldWidth, fieldHeight, mines);
}
// Handles the click of any button in the minesweeper grid
void MainGUI::OnButtonClicked(wxCommandEvent &event) {
const int buttonIndex = event.GetId() - 10000;
const int buttonX = buttonIndex % fieldWidth;
const int buttonY = buttonIndex / fieldWidth;
DiscoverMine(buttonX, buttonY, buttonIndex);
event.Skip();
}
void MainGUI::DiscoverMine(int buttonX, int buttonY, int buttonIndex) {
// Immediatelly return if the button was flagged by the player
if (buttons.at(buttonIndex)->GetLabel() == L"🚩")
return;
// Check if the button was a bomb
if (fieldMines.at(buttonIndex) == Mine::Planted) {
DisplayBombsLocation();
wxMessageBox("CHERNOBYL WAS AVOIDABLE, THIS WAS NOT", "You lost the game");
GameOverReset();
return;
}
// Field is generated on first click to guarantee no first click loss
if (clickedSquares == 0) {
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<> dis(0, fieldWidth * fieldHeight - 1);
for (int minesPlanted = 0; minesPlanted < mines;) {
const int mineIndex = dis(gen);
if (fieldMines.at(mineIndex) == Mine::Empty && mineIndex != buttonIndex) {
fieldMines.at(mineIndex) = Mine::Planted;
++minesPlanted;
}
}
}
Sweep(buttonX, buttonY, buttonIndex);
if (clickedSquares == (fieldWidth * fieldHeight) - mines) {
DisplayBombsLocation();
wxMessageBox("CHERNOBYL WAS AVOIDABLE, CONGRATULATIONS", "You won the game");
GameOverReset();
}
}
void MainGUI::Sweep(int buttonX, int buttonY, int buttonIndex) {
buttons.at(buttonIndex)->Enable(false);
buttons.at(buttonIndex)->SetLabel("");
++clickedSquares;
const int neighbourMines = CountNeighbours(buttonX, buttonY);
if (neighbourMines > 0)
return buttons.at(buttonIndex)->SetLabel(std::to_string(neighbourMines));
for (int i = -1; i <= 1; i++) {
for (int j = -1; j <= 1; j++) {
const bool validIndex = std::clamp(buttonX + i, 0, fieldWidth - 1) == buttonX + i &&
std::clamp(buttonY + j, 0, fieldHeight - 1) == buttonY + j;
if (!validIndex)
continue;
const int neighbourIndex = (buttonY + j) * fieldWidth + (buttonX + i);
if (buttons.at(neighbourIndex)->IsEnabled())
Sweep(buttonX + i, buttonY + j, neighbourIndex);
}
}
}
int MainGUI::CountNeighbours(int buttonX, int buttonY) {
int neighbourMines = 0;
for (int i = -1; i <= 1; i++) {
for (int j = -1; j <= 1; j++) {
const bool validIndex = std::clamp(buttonX + i, 0, fieldWidth - 1) == buttonX + i &&
std::clamp(buttonY + j, 0, fieldHeight - 1) == buttonY + j;
if (!validIndex)
continue;
const int neighbourMineIndex = (buttonY + j) * fieldWidth + (buttonX + i);
if (fieldMines.at(neighbourMineIndex) == Mine::Planted)
++neighbourMines;
}
}
return neighbourMines;
}
void MainGUI::OnButtonRightClicked(wxMouseEvent &event) {
const static std::unordered_map<wxString, wxString> labelMap = {
{"", L"🚩"}, {L"🚩", L"❓"}, {L"❓", ""}};
const int buttonIndex = event.GetId() - 10000;
const auto currentLabel = buttons.at(buttonIndex)->GetLabel();
const auto nextLabel = labelMap.at(currentLabel);
buttons.at(buttonIndex)->SetLabel(nextLabel);
}
void MainGUI::DisplayBombsLocation() {
std::for_each(fieldMines.begin(), fieldMines.end(), [this](const auto &mine) {
if (mine == Mine::Planted)
buttons.at(&mine - &fieldMines.front())->SetLabel(L"💣");
});
}
void MainGUI::GameOverReset() {
clickedSquares = 0;
std::for_each(fieldMines.begin(), fieldMines.end(), [this](const auto &mine) {
const int index = &mine - &fieldMines.front();
fieldMines.at(index) = Mine::Empty;
buttons.at(index)->SetLabel("");
buttons.at(index)->Enable(true);
});
}
void MainGUI::GenerateNewField(int newFieldWidth, int newFieldHeight, int newMines) {
fieldWidth = newFieldWidth;
fieldHeight = newFieldHeight;
mines = newMines;
buttons = std::vector<std::unique_ptr<wxButton>>(fieldWidth * fieldHeight);
fieldMines = std::vector<Mine>(fieldWidth * fieldHeight);
buttonGrid->Clear(true);
buttonGrid->SetCols(fieldWidth);
buttonGrid->SetRows(fieldHeight);
std::for_each(fieldMines.begin(), fieldMines.end(), [this](const auto &mine) {
const static wxFont font(16, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_BOLD);
const int index = &mine - &fieldMines.front();
buttons.at(index) = std::make_unique<wxButton>(this, 10000 + index);
buttons.at(index)->SetFont(font);
buttons.at(index)->Bind(wxEVT_COMMAND_BUTTON_CLICKED, &MainGUI::OnButtonClicked, this);
buttons.at(index)->Bind(wxEVT_RIGHT_UP, &MainGUI::OnButtonRightClicked, this);
buttonGrid->Add(buttons.at(index).get(), 1, wxEXPAND | wxALL);
fieldMines.at(index) = Mine::Empty;
});
buttonGrid->Layout();
}
void MainGUI::SetDifficulty(wxCommandEvent &event) {
const static std::unordered_map<int, std::tuple<int, int, int>> difficulties = {
{ID_EASY, std::make_tuple(8, 8, 10)},
{ID_MEDIUM, std::make_tuple(16, 16, 40)},
{ID_HARD, std::make_tuple(30, 16, 99)}};
const auto lookupResult = difficulties.find(event.GetId());
std::tie(fieldWidth, fieldHeight, mines) = lookupResult->second;
GameOverReset();
GenerateNewField(fieldWidth, fieldHeight, mines);
}
void MainGUI::NewGame(wxCommandEvent &event) {
GameOverReset();
event.Skip();
}
void MainGUI::CloseGame(wxCommandEvent &event) {
Close();
event.Skip();
}