fix bug, reload net

mainLoop.py

@@ -4,10 +4,12 @@ from Map import Map
 from CarController import CarController
 
 from PySide6.QtWidgets import QFileDialog, QToolBox
-from PySide6.QtCore import QElapsedTimer, QTimer, QElapsedTimer, QObject, Signal, Slot
+from PySide6.QtCore import QElapsedTimer, QTimer, QElapsedTimer, QObject, Signal, Slot, QThread, QMutex
 
 class mainLoop(QObject):
     updateFPS = Signal(int)
+    mutex = QMutex()
+    
     def __init__(self, parent):
         super().__init__()
         self.parent = parent
@@ -30,16 +32,26 @@ class mainLoop(QObject):
         self.fpsTimer = QElapsedTimer()
         self.updateFPS.connect(self.parent.updatePhysicsFps)
     
+    def threadSafe(func):
+        def inner(*args, **kwargs):
+            args[0].mutex.lock()
+            func(*args, **kwargs)
+            args[0].mutex.unlock()
+        return inner
+
     def start(self):
         self.fpsTimer.start()
+        self.stopSignal.connect(self.timer.stop)
 
+    @threadSafe
     def update(self):
         try:
             self.controller.update()
         except:
             (type, value, traceback) = sys.exc_info()
             print(type, value, traceback)
-
+    
+    @threadSafe
     def openNetwork(self, filename):
         if filename == '':
             return
@@ -48,6 +60,7 @@ class mainLoop(QObject):
 
         self.controller.prepareRoute()
 
+    @threadSafe
     def openVehicles(self, filename):
         if filename == '':
             return
@@ -55,6 +68,7 @@ class mainLoop(QObject):
         if self.map.isLoaded():
             self.controller.prepareRoute()
     
+    @threadSafe
     def quickLoad(self):
         self.map.fromPath("test2.net.xml")
         self.painter.generateTransform()