ScreenList.cpp

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#include "ScreenList.hpp"
 
#include "Screen.hpp"
 
namespace BARE2D {
 
    ScreenList::ScreenList()
    {
    }
 
    ScreenList::~ScreenList()
    {
        for(unsigned int i = 0; i < m_screens.size(); i++) {
            m_screens[i]->destroyScreen();
            delete m_screens[i];
        }
        m_currentScreen = nullptr;
        m_previousScreen = nullptr;
    }
 
    void ScreenList::addScreen(Screen* screen)
    {
        screen->initScreen();
        m_screens.push_back(screen);
    }
 
    void ScreenList::addEntryScreen(Screen* screen)
    {
        m_currentScreen = screen;
        addScreen(screen);
    }
 
    void ScreenList::moveToNextScreen()
    {
        // Make sure we don't do something dumb.
        if(m_currentScreen) {
            if((long unsigned int)m_currentScreen->getNextScreenIndex() < m_screens.size()) {
                // Exit the current screen
                m_currentScreen->onExit();
                
                // Move to the next
                m_currentScreen = m_screens[m_currentScreen->getNextScreenIndex()];
                
                // Enter the next
                m_currentScreen->onEntry();
            }
        }
    }
 
    void ScreenList::moveToPreviousScreen()
    {
        // Make sure we don't do dumb stuff
        if(m_previousScreen) {
            // Take a temporary variable to swap this and the previous screen.
            Screen* prev = m_currentScreen;
            
            // Exit this one
            m_currentScreen->onExit();
            
            // Move to previous, set the new previous
            m_currentScreen = m_previousScreen;
            m_previousScreen = prev;
            
            // Enter previous
            m_currentScreen->onEntry();
        }
    }
    
    Screen* ScreenList::getCurrentScreen() {
        return m_currentScreen;
    }
 
}