fix thread timer

main.py

@@ -13,6 +13,7 @@ from window import Ui_MainWindow
 from mainLoop import mainLoop
 
 class MainWindow(QMainWindow):
+    stopMainLoopTimer = Signal()
     def __init__(self):
         super().__init__()
         self.ui = Ui_MainWindow()
@@ -45,11 +46,13 @@ class MainWindow(QMainWindow):
         self.drawTimer.timeout.connect(self.updateFPS)
         self.drawTimer.start(1000/60)
 
-        self.ui.startButton.clicked.connect(self.mainLoop.timer.start)
-        self.ui.stopButton.clicked.connect(self.mainLoop.timer.stop)
+        self.ui.startButton.clicked.connect(self.mainLoop.startTimer)
+        self.ui.stopButton.clicked.connect(self.mainLoop.stopTimer)
+
+        self.stopMainLoopTimer.connect(self.mainLoop.stopTimer)
 
         self.ui.mainFPS_set.valueChanged.connect(self.drawTimer.setInterval)
-        self.ui.physicsFPS_set.valueChanged.connect(self.mainLoop.timer.setInterval)
+        self.ui.physicsFPS_set.valueChanged.connect(self.mainLoop.setTimerInterval)
 
         self.fpsTimer = QElapsedTimer()
         self.fpsTimer.start()
@@ -90,6 +93,7 @@ class MainWindow(QMainWindow):
         self.mainLoop.openVehicles(filename[0])
 
     def close(self):
+        self.stopMainLoopTimer.emit()
         self.updateThread.quit()
         self.updateThread.wait()
         super().close()

mainLoop.py

@@ -1,5 +1,3 @@
-import sys
-
 from Map import Map
 from CarController import CarController
 
@@ -22,10 +20,7 @@ class mainLoop(QObject):
         self.painter.addMap(self.map)
         self.painter.addCarController(self.controller)
         
-        self.timer = QTimer()
-        self.timer.timeout.connect(self.update)
-        self.timer.timeout.connect(self.updateFps)
-        self.timer.setInterval(1000/60)
+        self.timer = None
 
         self.fpsTimer = QElapsedTimer()
         self.updateFPS.connect(self.parent.updatePhysicsFps)
@@ -41,8 +36,26 @@ class mainLoop(QObject):
 
     def start(self):
         self.fpsTimer.start()
+        
+        self.timer = QTimer()
+        self.timer.timeout.connect(self.updateFps)
+        self.timer.timeout.connect(self.update)
+        self.timer.setInterval(1000/60)
         self.stopSignal.connect(self.timer.stop)
 
+    def startTimer(self):
+        self.timer.start()
+
+    def stopTimer(self):
+        self.timer.stop()
+
+    def setTimerInterval(self,t):
+        self.timer.setInterval(t)
+
+    def quit(self):
+        super().quit()
+        self.timer.stop()
+
     @threadSafe
     def update(self):
         try: