private void timer1_Tick(object sender, EventArgs e) { remainingTime--; labelTime.Text = "残り時間:" + (remainingTime / 10) + "秒"; if (isDayTime == true) { daytime--; if (daytime == 0) { isDayTime = false; iwashi.Sleep(); utubo.Sleep(); daytime = 100; this.BackColor = Color.Navy; } } else { night--; if (night == 0) { isDayTime = true; iwashi.WakeUp(); utubo.WakeUp(); night = 50; this.BackColor = Color.CornflowerBlue; } } if (remainingTime / 10 == 0) { timer1.Stop(); labelTime.Text = "ゲームオーバー"; } else { swim(); } }