#include "ScreenManager.h"

ScreenManager::ScreenManager(void)
    : SplashScreen(NULL), TitleScreen(NULL), currentScreen(NULL)
{
}


ScreenManager::~ScreenManager()
{
}

ScreenManager &ScreenManager::GetInstance()
{
    static ScreenManager instance;
    return instance;
}

void ScreenManager::Initialize(SDL_Renderer *renderer)
{
    SplashScreen = new GameScreen;
    TitleScreen = new GameScreen;

    if (SplashScreen) SplashScreen->LoadContent(renderer);
    if (TitleScreen) TitleScreen->LoadContent(renderer);

    currentScreen = SplashScreen;

    /*transition = false;
    fade.LoadContent(renderer);
    file.LoadContent("tests.cme", attributes, contents);*/
}

void ScreenManager::LoadContent(SDL_Renderer *renderer)
{
    currentScreen->LoadContent(renderer);
}

void ScreenManager::Update(SDL_Renderer *renderer, SDL_Event &event)
{
    if(currentScreen)
    {
        currentScreen->Update(renderer, event);
    }
}

void ScreenManager::Draw(SDL_Renderer *renderer)
{
    if(currentScreen)
    {
        currentScreen->Draw(renderer);
    }
}

void ScreenManager::SetScreen(GameScreen *newScreen)
{
    currentScreen = newScreen;
}

void ScreenManager::Transition(SDL_Renderer *renderer)
{
}

Uint8 ScreenManager::GetAlpha()
{
    return fade.getAlpha();
}

void ScreenManager::UnloadContent()
{
    if (TitleScreen) TitleScreen->UnloadContent(); delete TitleScreen; TitleScreen = NULL;
    if (SplashScreen) SplashScreen->UnloadContent(); delete SplashScreen; SplashScreen = NULL;
}