help.cpp

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#include <SDL/SDL.h>
#include "constants.h"

#include "font.h"
#include "help.h"
#include "sfcave.h"
#include "starfield.h"

Help :: Help( SFCave *p )
{
    parent = p;
        stars = new StarField( false, 200 );

    loadText();

    init();
}

Help :: ~Help()
{
    delete stars;
}

void Help :: handleKeys( SDL_KeyboardEvent &key )
{
        if ( key.type == SDL_KEYDOWN )
        {
        if ( key.keysym.sym == SDLK_SPACE )
            parent->changeState( STATE_MENU );
        else if ( key.keysym.sym == SDLK_DOWN )
            textSpeed = 5;
        else if ( key.keysym.sym == SDLK_UP )
        {
            if ( textSpeed > 0 )
                textSpeed = 0;
            else textSpeed = 1;
        }

        }
        else if ( key.type == SDL_KEYUP )
        {
        if ( key.keysym.sym == SDLK_DOWN )
            textSpeed = 1;
    }
}
void Help :: init()
{
        startPos = 320;
        currLine = 0;
        textSpeed = 1;

        // Create our coloured font
        FontHandler :: changeColor( FONT_HELP_FONT, 0, 0, 255 );
}

void Help :: draw( SDL_Surface *screen )
{
    stars->draw( screen );

        list<string>::iterator it = textList.begin();

        // Move to start of text
        for ( int i = 0 ; i < currLine && it != textList.end() ; ++i )
                it++;

        int pos = startPos;
        while ( pos < 320 && it != textList.end() )
        {
                // get next line
                string text = *it;

                // draw text
                FontHandler::draw( screen, FONT_COLOURED_TEXT, text.c_str(), -1, pos );
                pos += FontHandler::FontHeight( FONT_COLOURED_TEXT );
                it ++;
        }

}

void Help :: update()
{
    stars->move();

        startPos -= textSpeed;
        if ( startPos <= -FontHandler::FontHeight( FONT_COLOURED_TEXT ) )
        {
                startPos = 0;
                currLine ++;

                if ( currLine > textList.size() )
                {
                        startPos = 320;
                        currLine = 0;
                }
        }

}

void Help :: loadText()
{
        textList.push_back( "SFCave" );
        textList.push_back( "Written By AndyQ" );
        textList.push_back( "" );
        textList.push_back( "Instructions" );
        textList.push_back( "To return to the menu" );
        textList.push_back( "press the space or " );
        textList.push_back( "middle button." );
        textList.push_back( "" );
        textList.push_back( "To speed up the text" );
        textList.push_back( "hold the down button" );
        textList.push_back( "(releasing will return" );
        textList.push_back( "to normal speed)" );
        textList.push_back( "" );
        textList.push_back( "" );
        textList.push_back( "SFCave is a flying game" );
        textList.push_back( "writtin originally for the" );
        textList.push_back( "Sharp Zaurus." );
        textList.push_back( "" );
        textList.push_back( "The aim is to stay alive" );
        textList.push_back( "for as long as possible," );
        textList.push_back( "and get the highest score" );
        textList.push_back( "you can." );
        textList.push_back( "" );
        textList.push_back( "There are currently three" );
        textList.push_back( "game types - SFCave," );
        textList.push_back( "Gates, and Fly." );
        textList.push_back( "" );
        textList.push_back( "SFCave is a remake of" );
        textList.push_back( "the classic SFCave game." );
        textList.push_back( "Fly through the cavern" );
        textList.push_back( "avoiding all the blocks" );
        textList.push_back( "that just happen to be" );
        textList.push_back( "hanging in mid-air" );
        textList.push_back( "" );
        textList.push_back( "Gates is similar to" );
        textList.push_back( "SFCave but instead of" );
        textList.push_back( "avoiding blocks you must" );
        textList.push_back( "fly through gates without" );
        textList.push_back( "crashing." );
        textList.push_back( "" );
        textList.push_back( "Fly is a different kettle of" );
        textList.push_back( "fish altogether. Instead," );
        textList.push_back( "you are flying in the " );
        textList.push_back( "open air above a" );
        textList.push_back( "scrolling landscape and" );
        textList.push_back( "the aim is to fly as close" );
        textList.push_back( "to the land as possible." );
        textList.push_back( "The closer to the land" );
        textList.push_back( "you fly the more points" );
        textList.push_back( "you score. But beware," );
        textList.push_back( "fly too high above the" );
        textList.push_back( "land and points get" );
        textList.push_back( "deducted." );
        textList.push_back( "" );
        textList.push_back( "How to play" );
        textList.push_back( "Press the space or middle" );
        textList.push_back( "button (Zaurus only) to " );
        textList.push_back( "apply thrust (makes you" );
        textList.push_back( "go up) and release it" );
        textList.push_back( "to go down." );
        textList.push_back( "" );
        textList.push_back( "Have fun" );
        textList.push_back( "AndyQ" );
}

// Test
#ifdef DEBUG_HELP
SDL_Surface *screen;
Help *help;

void go()
{
        FontHandler :: init();

        /* Initialize SDL */
        if ( SDL_Init(SDL_INIT_VIDEO) < 0 )
        {
                fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
                exit(1);
        }
        atexit(SDL_Quit);

        int videoflags = SDL_SWSURFACE ;

        if ( (screen=SDL_SetVideoMode(240, 320,32,videoflags)) == NULL )
        {
                fprintf(stderr, "Couldn't set %ix%i video mode: %s\n",240,320,SDL_GetError());
                exit(2);
        }

        help = new Help();

        bool done = false;
        while ( !done )
        {
                SDL_FillRect( screen, 0, 0 );
                help->draw( screen );
                help->update( );

                SDL_Flip( screen );

                SDL_Delay( 10 );

                SDL_Event event;
                while ( SDL_PollEvent(&event) )
                {
                        switch (event.type)
                        {
                                case SDL_KEYDOWN:
                                        // Escape keypress quits the app
                                        if ( event.key.keysym.sym != SDLK_ESCAPE )
                                        {
                                                break;
                                        }
                                case SDL_QUIT:
                                        done = 1;
                                        break;
                                default:
                                        break;
                        }
                }
        }
 }




#ifdef __cplusplus
extern "C"
#endif
int main( int argc, char *argv[] )
{
        go();
}

#endif

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