Integrated Demo: demo world not launching

[mjsaenz]

When I follow the instructions for the integrated demo, I am unable to get the demo world to load. The terminal will fill with the error seen below, while Gazebo will take a long time to launch. Once it does launch, however, the world screen remains black. Is this due to my machine being underpowered?

The aforementioned error.

[woensug-choi]

dave/models/dave_worlds/worlds/dave_integrated.world

Lines 289 to 296 in 09b2ca6

	<include>
	<name>niskin</name>
	<pose>9.046633 -7.605316 -118.217148 -0.918770 -1.547187 0</pose>
	<!--uri>https://fuel.ignitionrobotics.org/1.0/Cole/models/Niskin</uri-->
	<!-- Use the SDF in repo for inertial values not yet on Ignition Fuel -->
	<uri>model://niskin</uri>
	<static>true</static>
	</include>

changing uri to https://fuel.gazebosim.org/1.0/Cole/models/Niskin partly solves the problem. I didn't go through all but other models' link, such as https://fuel.ignitionrobotics.org/1.0/Cole/models/Coral01 should be also changed from fuel.ignitionrobotics.org to fuel.gazebosim.org.

Let me be back with updates soon. The loading takes forever and black screen is shown since it couldn't find the model.

[woensug-choi]

@mjsaenz Could you try #282 ? I've confirmed that the integrated demo runs fine with the fix. Although! It takes quite some time to load (since it needs to download models on the run). On my system, it took almost 5 minutes... but works!