// Evol functions.
// Authors:
//    Reid
// Description:
//    Util functions


// season_direction({day, month})
//    returns the direction that represents our current season (approximation)
//      DOWN:      Winter, 21/12
//      DOWNLEFT:  Spring, 20/03
//      LEFT:      Summer, 21/06
//      UPLEFT:    Autumn, 22/09

function	script	season_direction	{
    .@current_month = getarg(0, gettime(GETTIME_MONTH));

    if (.@current_month % 3 == 0)
    {
        .@current_day = getarg(1, gettime(GETTIME_DAYOFMONTH));

        switch (.@current_month)
        {
            case MARCH:     .@season_day = 20; break;
            case JUNE:      .@season_day = 21; break;
            case SEPTEMBER: .@season_day = 22; break;
            case DECEMBER:  .@season_day = 21; break;
            default: break;
        }
        
        .@is_after_season_day = .@current_day >= .@season_day ? 0 : -1;
    }

    return (.@current_month / 3 + .@is_after_season_day) % 4;
}