private void PictureBox1_Click(object sender, EventArgs e)
{
if (grainTypeCombo.SelectedItem == null)
{
MessageBox.Show("Wybierz typ ziarna przed klikaniem na siatkę!");
return;
}
int grainType = System.Convert.ToInt32(grainTypeCombo.SelectedItem);
MouseEventArgs clicked = (MouseEventArgs)e;
Point clickCoordinates = clicked.Location;
simulation.AddSeedOfSpecifiedType(clickCoordinates.Y / cellSize, clickCoordinates.X / cellSize, grainType);
}