private void Pause_Click(object sender, EventArgs e)
{
groupBox1.Invoke(new Action(() => groupBox1.Enabled = false));
BattleField Battle = BattleField.getBat();
Pause.Enabled = false;
UnDo.Enabled = true;
OneStep.Enabled = true;
Start.Enabled = true;
Restart.Enabled = true;
groupBox2.Enabled = true;
groupBox1.Enabled = true;
Battle.Pause();
}