MD/G Scroll - main.c

#include "../include/main.h"


void do_scroll (  )
{
    u16 joy = JOY_readJoypad ( JOY_1 );

    u8 x = 1;
    u8 y = 1;

    if ( joy & BUTTON_A     ) y = ++x;
    if ( joy & BUTTON_B     ) y = ++x;
    if ( joy & BUTTON_C     ) y = ++x;
    if ( joy & BUTTON_START ) y = ++x;

    if ( joy & BUTTON_LEFT       ) scroll_move_x ( BPLAN, +x );
    else if ( joy & BUTTON_RIGHT ) scroll_move_x ( BPLAN, -x );

    if ( joy & BUTTON_DOWN       ) scroll_move_y ( BPLAN, +y );
    else if ( joy & BUTTON_UP    ) scroll_move_y ( BPLAN, -y );


    if ( joy & BUTTON_DOWN & BUTTON_LEFT )
    {
        scroll_move_x ( BPLAN, +x );
        scroll_move_y ( BPLAN, +y );
    }

    if ( joy & BUTTON_DOWN & BUTTON_RIGHT )
    {
        scroll_move_x ( BPLAN, -x );
        scroll_move_y ( BPLAN, +y );
    }


    scroll_update ( BPLAN );
}


void show_fps()
{
    u8 str[4];
    uintToStr ( getFPS(), str, 2 );
    VDP_drawTextBG ( APLAN, str, 0, 1, 0 );
}


int main ( )
{
    scroll_init ( BPLAN, &abbayefull, PAL3 );
    scroll_show ( BPLAN );

    while ( TRUE )
    {
        show_fps();
        do_scroll();

        VDP_waitVSync();
    }

    return 0;
}