public bool ValidateWholeStatus()
{
if (LeftShore == null || RightShore == null)
{
return(false);
}
return(LeftShore.ValidateStatus() && RightShore.ValidateStatus());
}
public async Task TransportAsync(int delayMillisecond = 1000)
{
var step = 0;
var carry = default(TransportObject);
this.OnStart?.Invoke();
Step();
while (true)
{
await Report("檢查左岸是否為空");
if (LeftShore.Count == 0)
{
await Report("左岸為空，不進行搬運");
break;
}
carry = LeftShore.Dequeue();
await Report($"將 '{carry}' 放上船");
Status(new StatusReportEventArgs(LeftShore, carry, RightShore));
//檢查左岸是否會發生需要避免的狀況
await Report("檢查左岸是否會發生需要避免的狀況");
if (CheckAvoidSituation(LeftShore))
{
await Report($"會有危險，把 '{carry}' 放回左岸");
//會有危險，把TO物件放回左岸並換下一個
LeftShore.Enqueue(carry);
Status(new StatusReportEventArgs(LeftShore, RightShore));
continue;
}
else
{
await Report("左岸沒危險，渡河，到達右岸");
//左岸沒危險，渡河，到達右岸
RightShore.Enqueue(carry);
Status(new StatusReportEventArgs(LeftShore, RightShore));
//左岸全空
if (LeftShore.Count == 0)
{
//結束
await Report("左岸全空");
break;
}
//檢查右岸是否會發生需要避免的狀況
await Report("檢查右岸是否會發生需要避免的狀況");
if (CheckAvoidSituation(RightShore))
{
carry = RightShore.Dequeue();
await Report($"會有危險，把會造成危機的 '{carry}' 放上船");
Status(new StatusReportEventArgs(LeftShore, carry, RightShore));
//送往左岸
LeftShore.Enqueue(carry);
await Report("渡河，到達左岸");
Status(new StatusReportEventArgs(LeftShore, RightShore));
}
//右岸沒有危險，空手回左岸
else
{
await Report("右岸沒有危險，空手回左岸");
Status(new StatusReportEventArgs(LeftShore, this._void, RightShore));
}
}
Step();
await Report("目前狀況");
Status(new StatusReportEventArgs(LeftShore, RightShore));
}
this.OnCompleted?.Invoke();
return;
void Step()
=> this.OnStepUpdate?.Invoke(step++);
void Status(StatusReportEventArgs e)
=> this.OnStatusUpdate?.Invoke(e);
async Task Report(string message)
{
this.OnProgressUpdate?.Invoke(message);
await Task.Delay(delayMillisecond);
}
}
