添加了公交车动画函数

src/BusWidget.cpp

@@ -2,11 +2,17 @@
 // Created by ricardo on 2022/6/28.
 //
 
-#include "BusWidget.h"
+#include "moc_BusWidget.cpp"
+
+BusItem::BusItem(const QPixmap &pixmap) : QGraphicsPixmapItem(pixmap)
+{
+
+}
 
 BusWidget::BusWidget()
 {
-    item = new QGraphicsPixmapItem(QPixmap(":/picture/bus.png"));
+    item = new BusItem(QPixmap(":/picture/bus.png"));
+    animation = new QPropertyAnimation(item, "pos");
 
     // 设置缩放
     double bus_scale = 0.1;
@@ -20,9 +26,48 @@ BusWidget::~BusWidget()
     delete item;
 }
 
-void BusWidget::ResetBusPos(PosPair *s)
+void BusWidget::ResetBusPos(PosPair *s, int num)
 {
     pos_pairs = s;
+    pos = 0;
+    node_num = num;
 
-    item->setPos(s[0].GetBusPosX(), s[0].GetBusPosY());
+    item->setPos(pos_pairs[0].GetBusPosX(), pos_pairs[0].GetBusPosY());
+}
+
+void BusWidget::StartAnimation(int direction, int duration)
+{
+    bool is_animate = false;
+
+    animation->setDuration(duration);
+    animation->setStartValue(QPointF(pos_pairs[pos].GetBusPosX(), pos_pairs[pos].GetBusPosY()));
+
+    switch (direction)
+    {
+        case BUS_CLOCK_WISE:
+            pos++;
+            is_animate = true;
+            // 处理环绕一圈的情况
+            if(pos == node_num)
+            {
+                pos = pos - node_num;
+            }
+            break;
+        case BUS_COUNTER_CLOCK_WISE:
+            pos--;
+            is_animate = true;
+            // 处理环绕一圈的情况
+            if(pos == -1)
+            {
+                pos = pos + node_num;
+            }
+        default:
+            break;
+    }
+
+    if(is_animate)
+    {
+        animation->setEndValue(QPointF(pos_pairs[pos].GetBusPosX(), pos_pairs[pos].GetBusPosY()));
+        animation->start();
+    }
 }

src/mainScene.cpp

@@ -66,7 +66,7 @@ void SceneManager::SetStopScene(int node_number)
     }
 
     // 设置公交车图像
-    bus->ResetBusPos(stop_pos_pairs);
+    bus->ResetBusPos(stop_pos_pairs, node_number);
     scene->addItem(bus->item);
 }