这幽灵车终于跑起来了

include/BusFCFSStrategy.h

@@ -12,7 +12,7 @@ class BusFCFSStrategy : public BusStrategyBase
 
     bus_query_t *GetTargetQuery();
 
-    bus_query_t *HandleQuery();
+    bus_query_t *HandleBTWQuery();
 };
 
 

include/BusSCANStrategy.h

@@ -13,7 +13,7 @@ class BusSCANStrategy : public BusStrategyBase
 
     bus_query_t *GetTargetQuery();
 
-    bus_query_t *HandleQuery();
+    bus_query_t *HandleBTWQuery();
 
 };
 

include/BusSSTFStrategy.h

@@ -12,7 +12,7 @@ class BusSSTFStrategy : public BusStrategyBase
 
     bus_query_t *GetTargetQuery();
 
-    bus_query_t *HandleQuery();
+    bus_query_t *HandleBTWQuery();
 };
 
 

include/BusStrategyBase.h

@@ -40,17 +40,17 @@ public:
     virtual bus_query_t *GetTargetQuery() = 0;
 
     /**
-     * 获取公交车现在可以处理的请求
+     * 获取公交车现在可以顺便处理的请求
      * @return 请求指针
      */
-    virtual bus_query_t *HandleQuery() = 0;
+    virtual bus_query_t *HandleBTWQuery() = 0;
 
     signals:
     /**
      * 删除请求信号
      * @param query 需要删除请求的指针
      */
-    void DeleteQuerySignal(bus_query_t *query);
+    void DeleteQuerySignal(int query_type, int node_id);
 
     /**
      * 打印状态信号
@@ -58,8 +58,25 @@ public:
      */
     void PrintStateSignal(QString string);
 
+    /**
+     * 获得公交车前进方向的信号
+     */
+    void GetBusDirectionSignal();
+
+    /**
+     * 运行公交车的信号
+     * @param direction 公交车前进的方向
+     * @param duration 前进需要的时间
+     */
+    void BusRunningSignal(int direction, int duration);
+
 public slots:
-    void AppendQuerySlot(int query_type, int node_id) const;
+    /**
+     * 添加请求的槽函数
+     * @param query_type 请求的类别
+     * @param node_id 请求的站点ID
+     */
+    void AppendQuerySlot(int query_type, int node_id);
 
     /**
      * 处理开始事件的槽函数
@@ -76,6 +93,10 @@ public slots:
      */
     void OneTickSlot(int remaining_time);
 
+    void GetBusDirectionSlot();
+
+    void OnStopSlot();
+
 private:
     /**
      * 储存当前的状态
@@ -91,6 +112,7 @@ private:
 
     void SetConnection() const;
 
+    void HandleQuery();
 };
 
 

src/BusFCFSStrategy.cpp

@@ -55,21 +55,12 @@ int BusFCFSStrategy::GetBusDirection()
 
 bus_query_t *BusFCFSStrategy::GetTargetQuery()
 {
+    // FCFS只处理第一个请求
     return query_model->queries;
 }
 
-bus_query_t *BusFCFSStrategy::HandleQuery()
+bus_query_t *BusFCFSStrategy::HandleBTWQuery()
 {
-    bus_query_t *result = NULL;
+    // FCFS不进行顺便处理
-    bus_query_t *query = query_model->queries;
+    return nullptr;
-
-    if(query != nullptr)
-    {
-        if(bus_model->rail_pos == query->node)
-        {
-            result = query;
-        }
-    }
-
-    return result;
 }

src/BusSCANStrategy.cpp

@@ -116,7 +116,7 @@ bus_query_t *BusSCANStrategy::GetTargetQuery()
     }
 }
 
-bus_query_t *BusSCANStrategy::HandleQuery()
+bus_query_t *BusSCANStrategy::HandleBTWQuery()
 {
     //获取公交车当前所在站点
     rail_node_t *now_position = bus_model->rail_pos;

src/BusSSTFStrategy.cpp

@@ -28,7 +28,7 @@ int BusSSTFStrategy::GetBusDirection()
     }
 }
 
-bus_query_t *BusSSTFStrategy::HandleQuery()
+bus_query_t *BusSSTFStrategy::HandleBTWQuery()
 {
     // 这里只是处理顺便服务的代码
 

src/BusStrategyBase.cpp

@@ -11,6 +11,8 @@ BusStrategyBase::BusStrategyBase()
     bus_model = new BusModel;
 
     bus_tick = 0;
+
+    SetConnection();
 }
 
 BusStrategyBase::~BusStrategyBase()
@@ -22,13 +24,20 @@ BusStrategyBase::~BusStrategyBase()
 
 void BusStrategyBase::SetConnection() const
 {
-
+    QObject::connect(this, &BusStrategyBase::GetBusDirectionSignal,
+                     this, &BusStrategyBase::GetBusDirectionSlot);
 }
 
-void BusStrategyBase::AppendQuerySlot(int query_type, int node_id) const
+void BusStrategyBase::AppendQuerySlot(int query_type, int node_id)
 {
     rail_node_t *node = rails_model->FindNode(node_id);
     query_model->CreateQuery(query_type, node);
+
+    // 如果公交车停车且在系统在运行
+    if(bus_model->direction == BUS_STOP && status == BUS_RUNNING)
+    {
+        emit GetBusDirectionSignal();
+    }
 }
 
 void BusStrategyBase::OneTickSlot(int remaining_time)
@@ -48,6 +57,8 @@ void BusStrategyBase::BusBeginSlot()
     // 在一开始先打印一下状态
     QString str = PrintState(0);
     emit PrintStateSignal(str);
+
+    emit GetBusDirectionSignal();
 }
 
 void BusStrategyBase::BusEndSlot()
@@ -58,6 +69,80 @@ void BusStrategyBase::BusEndSlot()
     bus_model->ResetBus(rails_model->rails);
 }
 
+void BusStrategyBase::GetBusDirectionSlot()
+{
+    bus_model->target_query = GetTargetQuery();
+    bus_model->direction = GetBusDirection();
+
+    // 如果没有目标请求，跳出循环
+    if(bus_model->target_query == nullptr)
+    {
+        return;
+    }
+
+    int duration = 0;
+
+    switch (bus_model->direction)
+    {
+        case BUS_CLOCK_WISE:
+            duration = bus_model->rail_pos->next_node_distance / bus_model->velocity * 1000;
+            break;
+        case BUS_COUNTER_CLOCK_WISE:
+            duration = bus_model->rail_pos->last_node_distance / bus_model->velocity * 1000;
+            break;
+        case BUS_STOP:
+            duration = 1000;
+            break;
+    }
+
+    emit BusRunningSignal(bus_model->direction, duration);
+}
+
+void BusStrategyBase::HandleQuery()
+{
+    if(bus_model->target_query != nullptr)
+    {
+        if(bus_model->target_query->node == bus_model->rail_pos)
+        {
+            // 如果已经到站
+            while (bus_model->target_query != nullptr and
+                bus_model->target_query->node == bus_model->rail_pos)
+            {
+                emit DeleteQuerySignal(bus_model->target_query->type, bus_model->target_query->node->id);
+                query_model->DeleteQuery(bus_model->target_query);
+                bus_model->target_query = GetTargetQuery();
+            }
+        }
+        else
+        {
+            // 没有到站就进行顺便处理
+            bus_query_t *query = HandleBTWQuery();
+
+            while(query != nullptr)
+            {
+                emit DeleteQuerySignal(query->type, query->node->id);
+                query_model->DeleteQuery(query);
+                query = HandleBTWQuery();
+            }
+        }
+    }
+}
+
+void BusStrategyBase::OnStopSlot()
+{
+    if(bus_model->direction == BUS_CLOCK_WISE)
+    {
+        bus_model->rail_pos = bus_model->rail_pos->next_node;
+    }
+    else if(bus_model->direction == BUS_COUNTER_CLOCK_WISE)
+    {
+        bus_model->rail_pos = bus_model->rail_pos->last_node;
+    }
+    HandleQuery();
+
+    emit GetBusDirectionSignal();
+}
+
 QString BusStrategyBase::PrintState(int remaining_time) const
 {
     int count = 0;

src/centralwidget.cpp

@@ -44,8 +44,13 @@ void CentralWidget::SetControlConnection()
     QObject::connect(controller, &BusStrategyBase::DeleteQuerySignal,
                      this, &CentralWidget::DeleteQueryItemSlot);
 
+    // 设置打印状态事件的连接
     QObject::connect(controller, &BusStrategyBase::PrintStateSignal,
                      this, &CentralWidget::PrintStateSlot);
+
+    QObject::connect(controller, &BusStrategyBase::BusRunningSignal,
+                     this, &CentralWidget::BeginBusAnimationSlot);
+
 }
 
 void CentralWidget::SetWidgetConnection()
@@ -94,21 +99,25 @@ void CentralWidget::AppendQueryItemSlot(int query_type, int node_id)
     ui->query_list->setItemWidget(widget_item, item);
 }
 
-void CentralWidget::DeleteQueryItemSlot(bus_query_t *query)
+void CentralWidget::DeleteQueryItemSlot(int query_type, int node_id)
 {
     // 由于请求列表头的存在，编号从1开始
     int query_id = 1;
 
-    for(auto itor = query_items.begin(); itor != query_items.end(); ++itor)
+    // 先排除表头的影响
+    auto first_item = query_items.begin();
+    first_item++;
+
+    for(auto itor = first_item; itor != query_items.end(); ++itor)
     {
-        if((*itor)->query_type == query->type and (*itor)->target_node_id == query->node->id)
+        if((*itor)->query_type == query_type and (*itor)->target_node_id == node_id)
         {
             break;
         }
         query_id++;
     }
 
-     QListWidgetItem *deleted_item = ui->query_list->takeItem(query_id);
+    QListWidgetItem *deleted_item = ui->query_list->takeItem(query_id);
 
     auto pos = query_items.begin();
 
@@ -118,8 +127,8 @@ void CentralWidget::DeleteQueryItemSlot(bus_query_t *query)
     }
 
     delete deleted_item;
-    query_items.erase(pos);
     delete *pos;
+    query_items.erase(pos);
 }
 
 void CentralWidget::PrintStateSlot(const QString& string)
@@ -132,6 +141,11 @@ void CentralWidget::PrintStateSlot(const QString& string)
     ui->text_output->setTextCursor(cursor);
 }
 
+void CentralWidget::BeginBusAnimationSlot(int direction, int duration)
+{
+    scene_manager->BeginBusAnimation(direction, duration);
+}
+
 void CentralWidget::AddQueryButtonClicked()
 {
     int query_type = ui->query_type_combo->currentIndex();

src/header/centralwidget.h

@@ -56,7 +56,7 @@ public slots:
      * 处理删除一个请求的槽函数
      * @param query 请求指针
      */
-    void DeleteQueryItemSlot(bus_query_t *query);
+    void DeleteQueryItemSlot(int query_type, int node_id);
 
     /**
      * 处理点击添加请求按钮的槽函数
@@ -69,6 +69,8 @@ public slots:
      */
     void PrintStateSlot(const QString& string);
 
+    void BeginBusAnimationSlot(int direction, int duration);
+
 private:
     /**
      * UI控件

src/header/mainwindow.h

@@ -79,6 +79,8 @@ public slots:
      */
     void OneTickSlot();
 
+    void BeginBusTimerSlot(int direction, int duration);
+
 private:
     /**
      * 设置一时刻的长度，单位毫秒

src/mainwindow.cpp

@@ -25,6 +25,9 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
 
     //开始多线程事件循环
     worker_thread->start();
+
+    // 设置计时器只工作一次
+    bus_timer->setSingleShot(true);
 }
 
 MainWindow::~MainWindow()
@@ -80,6 +83,12 @@ void MainWindow::SetControlConnection()
     // 每一tick连接
     QObject::connect(this, &MainWindow::BusTickSignal,
                      controller, &BusStrategyBase::OneTickSlot);
+
+    QObject::connect(bus_timer, &QTimer::timeout,
+                     controller, &BusStrategyBase::OnStopSlot);
+
+    QObject::connect(controller, &BusStrategyBase::BusRunningSignal,
+                     this, &MainWindow::BeginBusTimerSlot);
 }
 
 void MainWindow::ReadConfigFileButtonClicked()
@@ -150,3 +159,8 @@ void MainWindow::EndTickTimerSlot()
 {
     tick_timer->stop();
 }
+
+void MainWindow::BeginBusTimerSlot(int direction, int duration)
+{
+    bus_timer->start(duration);
+}