private void btnTravel_Click(object sender, EventArgs e)
{
Travel travel = new Travel(inventory);
Progress += travel.Progress;
PlayerProgess p = new PlayerProgess();
p.Progress = inventory.player.progress;
Progress?.Invoke(this, p);
travel.ShowDialog();
}
//event progress method
public void Progress(object sender, PlayerProgess e)
{
progress = e.Progress;
}