MainMenuScreen.cpp

Go to the documentation of this file.

 
#include <string>
#include "MainMenuScreen.h"
#include "GameplayScreen.h"
 
// Callback Functions
 
void OnStartGameSelect(MenuScreen *pScreen)
{
    pScreen->Exit();
}
 
void OnQuitSelect(MenuScreen *pScreen)
{
    MainMenuScreen *pMainMenuScreen = (MainMenuScreen *)pScreen;
    pMainMenuScreen->SetQuittingGame();
    pScreen->Exit();
}
 
void OnMainMenuScreenRemoved(Screen *pScreen)
{
    MainMenuScreen *pMainMenuScreen = (MainMenuScreen *)pScreen;
 
    if (pMainMenuScreen->IsQuittingGame()) {
        pScreen->GetGame()->Quit();
        return;
    }
 
    pScreen->GetScreenManager()->AddScreen(new GameplayScreen());
}
 
 
MainMenuScreen::MainMenuScreen()
{
    SetRemoveCallback(OnMainMenuScreenRemoved);
 
    SetTransitionInTime(1);
    SetTransitionOutTime(0.5f);
 
    Show(); // Show the screen
}
 
void MainMenuScreen::LoadContent(ResourceManager& resourceManager)
{
    // Logo
    m_pTexture = resourceManager.Load<Texture>("Textures\\Logo.png");
    m_texturePosition = Game::GetScreenCenter() - Vector2::UNIT_Y * 150;
 
    // Create the menu items
    const int COUNT = 2;
    MenuItem *pItem;
    Font::SetLoadSize(20, true);
    Font *pFont = resourceManager.Load<Font>("Fonts\\arial.ttf");
 
    SetDisplayCount(COUNT);
 
    enum Items { START_GAME, QUIT };
    std::string text[COUNT] = { "Start Game", "Quit" };
 
    for (int i = 0; i < COUNT; i++)
    {
        pItem = new MenuItem(text[i]);
        pItem->SetPosition(Vector2(100, 100 + 50 * i));
        pItem->SetFont(pFont);
        pItem->SetColor(Color::Blue);
        pItem->SetSelected(i == 0);
        AddMenuItem(pItem);
    }
 
    GetMenuItem(START_GAME)->SetSelectCallback(OnStartGameSelect);
    GetMenuItem(QUIT)->SetSelectCallback(OnQuitSelect);
}
 
void MainMenuScreen::Update(const GameTime& gameTime)
{
    MenuItem *pItem;
 
    // Set the menu item colors
    for (int i = 0; i < GetDisplayCount(); i++)
    {
        pItem = GetMenuItem(i);
        pItem->SetAlpha(GetAlpha());
        pItem->SetColor(pItem->IsSelected() ? Color::White : Color::Blue);
    }
 
    MenuScreen::Update(gameTime);
}
 
void MainMenuScreen::Draw(SpriteBatch& spriteBatch)
{
    spriteBatch.Begin();
    spriteBatch.Draw(m_pTexture, m_texturePosition, Color::White * GetAlpha(), m_pTexture->GetCenter());
    spriteBatch.End();
 
    MenuScreen::Draw(spriteBatch);
}