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path: root/src/titlescreen.cpp
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#include "titlescreen.h"
#include "game.h"

#include "boxii/boxii.h"
#include "boxii/input.h"

#include <fstream>

static void
printTitle(std::shared_ptr<Boxii::Window> graphicWindow)
{
    std::fstream titlefile;
    std::string tmp;
    int cx = 0;
    int cy = 0;
    int startb = 0;

    (void)graphicWindow->getCenter(cx, cy);
    titlefile.open("assets/title.txt", std::ios::in);
    if(!titlefile.is_open()) {
        return;
    }

    cy /= 3;
    while(getline(titlefile, tmp)){
        int r = 255;
        int b = startb;
        int x = cx - (tmp.length() / 2);
        for(const char *c = tmp.c_str(); *c; c++){
            graphicWindow->plot(x++, cy, *c, (r << 16) | (b), 0);
            r -= 3;
            b += 3;
        }
        startb += 18;
        cy++;
    }
}

static const int selectionsTotal = 5;
static const std::string selectionTexts[selectionsTotal] = 
{
    "    Play    ",
    "   Worlds   ",
    "  Settings  ",
    "  Test Gen  ",
    "    Quit    "
};

static void
printSelections(std::shared_ptr<Boxii::TextWindow> selectionWindow, int selection)
{
    int selwidth = selectionWindow->getWidth() / selectionsTotal;
    int selcenter = selwidth / 2;
    int sely = (selectionWindow->getHeight() / 3) * 2;

    selectionWindow->clear(0xFFFFFF, 0x0);

    for(int i = 0; i < selectionsTotal; i++){
        if(selection == i){
            selectionWindow->setfg(0x0);
            selectionWindow->setbg(0xFFFFFF);
        }
        selectionWindow->moveCursor((selwidth * i) + (selcenter - (selectionTexts[i].length() / 2)), sely);
        selectionWindow->print(selectionTexts[i].c_str());
        selectionWindow->setbg(0x0);
        selectionWindow->setfg(0xFFFFFF);
        selectionWindow->print("        ");
    }
}

TitleScreen::TitleScreen() :
    m_graphicWindow(nullptr),
    m_selectionWindow(nullptr),
    m_selection(0)
{
    int sw = Boxii::getTerminalWidth();
    int sh = Boxii::getTerminalHeight();

    int graphicHeight = (sh / 4) * 3;
    int selectionHeight = (sh / 4);

    m_graphicWindow = Boxii::makeWindow<Boxii::Window>(0, 0, sw, graphicHeight + 1);
    m_selectionWindow = Boxii::makeWindow<Boxii::TextWindow>(0, graphicHeight + 1, sw, selectionHeight + 1);

    printTitle(m_graphicWindow);
    printSelections(m_selectionWindow, m_selection);
}

TitleScreen::~TitleScreen()
{

}

void
TitleScreen::parseSelection()
{
    if(m_selection == static_cast<int>(Selection::QUIT)) Game::stop();
}

void 
TitleScreen::update()
{
    int c = Boxii::Input::getch(true);
    if(c == Boxii::KEY_ESCAPE) {
        Game::pushScreen("pause");
    }

    if(c == Boxii::KEY_LEFT){
        m_selection--;
        if(m_selection < 0) m_selection = selectionsTotal - 1;
    }
    if(c == Boxii::KEY_RIGHT){
        m_selection++;
        if(m_selection >= selectionsTotal) m_selection = 0;
    }
    if(c == Boxii::KEY_RETURN){
        parseSelection();
    }

    printSelections(m_selectionWindow, m_selection);
}