HI Doug,
our students tried the correct interface (using setBrightness(n)) but
got a similar error.
The problem seems to be as below:
> AttributeError: BulbDevice instance has no attribute '__getitem__'
We're using a TkPioneer which is a subclass of TkRobot, subclassing
SimRobot. SimRobot has a method addDevice, which we use:
> sim.addRobot(60000, TkPioneer("RedPioneer",
> 4.99, 1.32, 6.28,
> ((.225, .225, -.225, -.225),
> (.175, -.175, -.175, .175)),
> "red"))
> # add some sensors:
> sim.robots[0].addDevice(PioneerFrontSonars())
> sim.robots[0].addDevice(BulbDevice(0.226, 0))
This works ok! We get a little robot with a light on his head!
Adding the device used the method addDevice in class SimRobot:
> def addDevice(self, dev):
> self.devices.append(dev)
> if dev.type not in self.builtinDevices:
> self.builtinDevices.append(dev.type)
> if dev.type == "bulb":
> self.simulator.lights.append( dev )
> dev.robot = self
> self.bulb = dev
<snip> etc...
But when we try to do this:
> print "bulb is", sim.robots[0].bulb[0]
we get the error :
print "bulb is", sim.robots[0].bulb[0]
AttributeError: BulbDevice instance has no attribute '__getitem__'
Now, the Device class has a __getitem__ method but looking in pysim.py
shows that class BulbDevice is a child of class Light. And class Light
ISN'T a child of class Device.
I'm confused! Where do I go from here?
regards
Matt
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