blame: source/code/MenuSystem.cc

/*

Block Attack - Rise of the Blocks, SDL game, besed on Nintendo's Tetris Attack

Copyright (C) 2008 Poul Sander

    This program is free software; you can redistribute it and/or modify

    it under the terms of the GNU General Public License as published by

    the Free Software Foundation; either version 2 of the License, or

    (at your option) any later version.

    This program is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License

    along with this program; if not, write to the Free Software

    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

#include <SDL/SDL_events.h>

#include "MenuSystem.h"

#include "common.h"

#include "CppSdl/CppSdlImageHolder.hpp"

extern CppSdl::CppSdlImageHolder mouse;

extern SDL_Surface *backgroundImage;

extern bool highPriority;

int mousex;

int mousey;

/*Draws a image from on a given Surface. Takes source image, destination surface and coordinates*/

inline void DrawIMG(SDL_Surface *img, SDL_Surface *target, int x, int y)

{

    SDL_Rect dest;

    dest.x = x;

    dest.y = y;

    SDL_BlitSurface(img, NULL, target, &dest);

}

CppSdl::CppSdlImageHolder ButtonGfx::_marked;

CppSdl::CppSdlImageHolder ButtonGfx::_unmarked;

int ButtonGfx::xsize;

int ButtonGfx::ysize;

NFont ButtonGfx::thefont;

void ButtonGfx::setSurfaces(CppSdl::CppSdlImageHolder marked,CppSdl::CppSdlImageHolder unmarked)

{

    ButtonGfx::_marked = marked;

    ButtonGfx::_unmarked = unmarked;

    xsize=(marked).GetWidth();

    ysize=(marked).GetHeight();

    cout << "Surfaces set, size: " <<xsize << " , " << ysize << endl;

}

Button::Button()

{

    label = "";

    marked = false;

    action = NULL;

}

Button::~Button()

{

}

Button::Button(const Button& b)

{

    label = b.label;

    marked = b.marked;

    action = b.action;

}

void Button::setLabel(string text)

{

    label = text;

}

void Button::setAction(void (*action2run)(Button*))

{

    action = action2run;

}

bool Button::isClicked(int x,int y)

{

    if ( x >= this->x && y >= this->y && x<= this->x+ButtonGfx::xsize && y <= this->y + ButtonGfx::ysize)

        return true;

    else

        return false;

}

void Button::doAction()

{

    if(action)

        action(this);

    else

        cout << "Warning: button \"" << label << "\" has no action assigned!";

}

void Button::drawTo(SDL_Surface **surface)

{

    #if DEBUG

    //cout << "Painting button: " << label << " at: " << x << "," << y << endl;

    #endif

    if (marked)

        ButtonGfx::_marked.PaintTo(*surface,x,y);

    else

        ButtonGfx::_unmarked.PaintTo(*surface,x,y);

    //int stringx = x + (ButtonGfx::xsize)/2 - ButtonGfx::ttf->getTextWidth(label)/2; 

    //int stringy = y + (ButtonGfx::ysize)/2 - ButtonGfx::ttf->getTextHeight()/2;

    //ButtonGfx::ttf->writeText(label,surface,stringx,stringy);

    ButtonGfx::thefont.setDest(*surface);

    ButtonGfx::thefont.drawCenter(x+ButtonGfx::xsize/2,y+ButtonGfx::ysize/2-ButtonGfx::thefont.getHeight(label.c_str())/2,label.c_str());

}

void Menu::drawSelf()

{

    DrawIMG(backgroundImage,screen,0,0);

    vector<Button*>::iterator it;

    for(it = buttons.begin();it < buttons.end(); it++)

        (*it)->drawTo(&screen);

    exit.drawTo(&screen);

    ButtonGfx::thefont.draw(50,50,title.c_str());

    mouse.PaintTo(screen,mousex,mousey);

}

void Menu::performClick(int x,int y)

{

    vector<Button*>::iterator it;

    for(it = buttons.begin();it < buttons.end(); it++)

    {

        Button *b = (*it);

        if(b->isClicked(x,y))

            b->doAction();

    }

    if(exit.isClicked(x,y))

        running = false;

}

void Menu::placeButtons()

{

    int nextY = 100;

    const int X = 50;

    vector<Button*>::iterator it;

    for(it = buttons.begin();it < buttons.end(); it++)

    {

        (*it)->x = X;

        (*it)->y = nextY;

        nextY += ButtonGfx::ysize+10;

    }

    exit.x = X;

    exit.y = nextY;

}

void Menu::addButton(Button *b)

{

    buttons.push_back(b);

    b->marked = false;

    placeButtons();

}

Menu::Menu(SDL_Surface **screen)

{

    this->screen = *screen; 

    buttons = vector<Button*>(10);

    isSubmenu = true;

    exit.setLabel("Back");

}

Menu::Menu(SDL_Surface **screen,bool submenu)

{

    this->screen = *screen;

    buttons = vector<Button*>(0);

    isSubmenu = submenu;

    if(isSubmenu)

        exit.setLabel("Back");

    else

        exit.setLabel("Exit");

}

Menu::Menu(SDL_Surface** screen, string title, bool submenu) {

    this->screen = *screen;

    buttons = vector<Button*>(0);

    isSubmenu = submenu;

    this->title = title;

    if(isSubmenu)

        exit.setLabel("Back");

    else

        exit.setLabel("Exit");

}

void Menu::run()

{

    running = true;

    bool bMouseUp = false;

    long oldmousex = mousex;

    long oldmousey = mousey;

    while(running && !Config::getInstance()->isShuttingDown())

    {

        if (!(highPriority)) SDL_Delay(10);

        SDL_Event event;

        while ( SDL_PollEvent(&event) )

        {

            if ( event.type == SDL_QUIT )  {

                Config::getInstance()->setShuttingDown(5);

                running = false;

            }

            if ( event.type == SDL_KEYDOWN )

            {

                if ( event.key.keysym.sym == SDLK_ESCAPE )

                {

                    running = false;

                }

                if (event.key.keysym.sym == SDLK_UP)

                {

                    marked--;

                    if(marked<0)

                        marked = buttons.size(); //not -1, since exit is after the last element in the list

                }

                if (event.key.keysym.sym == SDLK_DOWN)

                {

                    marked++;

                    if(marked>buttons.size())

                        marked = 0; 

                }

                if(event.key.keysym.sym == SDLK_RETURN || event.key.keysym.sym == SDLK_KP_ENTER ) {

                    if(marked < buttons.size())

                        buttons.at(marked)->doAction();

                    if(marked == buttons.size())

                        running = false;

                }

            }

        }

        for(int i=0;i<buttons.size();i++) {

            buttons.at(i)->marked = (i == marked);

        }

        exit.marked = (marked == buttons.size());

        Uint8 buttonState = SDL_GetMouseState(&mousex,&mousey);

        // If the mouse button is released, make bMouseUp equal true

        if ( (buttonState&SDL_BUTTON(1))==0)

        {

            bMouseUp=true;

        }

        if(abs(mousex-oldmousex)>5 || abs(mousey-oldmousey)>5) {

            for(int i=0;i< buttons.size();++i) {

                if(buttons.at(i)->isClicked(mousex,mousey)) {

                    marked = i;

                }

            }

            if(exit.isClicked(mousex,mousey)) {

                marked = buttons.size();

            }

            oldmousex = mousex;

            oldmousey = mousey;

        }

        //mouse clicked

        if(buttonState&SDL_BUTTON(1)==SDL_BUTTON(1) && bMouseUp) 

        {

            bMouseUp = false;

            for(int i=0;i< buttons.size();++i) {

                if(buttons.at(i)->isClicked(mousex,mousey)) {

                    buttons.at(i)->doAction();

                }

            }

            if(exit.isClicked(mousex,mousey)) {

                running = false;

            }

        }

        drawSelf();

        SDL_Flip(screen);

    }

}