Gazebo launches wrong world file

[Rithik02]

I am facing an issue where Gazebo is launching the wrong world file. In my worlds folder, I have two files:

• temp_world.sdf (contains the world built in Lecture 4)
• demo_world.sdf (a new world file I created)

However, when I run the command:
gz sim demo_world.sdf

Gazebo launches the world in temp_world.sdf instead of demo_world.sdf.

I have checked that both files exist in the worlds folder. Why is this happening, and how can I ensure Gazebo loads the correct world file?

Any help would be appreciated!

[girishkumar.kannan]

Hi @Rithik02 ,

Welcome to this Community!

Are you sure that you are executing the above command from the worlds directory that you created?

If not, try to go into the directory in which demo_world.sdf file exists and then do gz sim demo_world.sdf.

If you still get the same issue, try to add or remove something from the temp_world.sdf file and then launch gz sim ....

If that also fails, try to recompile your ROS2 workspace from scratch.

cd ~/ros2_ws
rm -rf ./build ./install ./log
colcon build && source install/setup.bash

Then navigate back into the folder containing the worlds and launch the world with gz sim <world>.sdf.

One of the above methods should fix your issue. Let us know if you still have issues!

Regards,
Girish

[Rithik02]

Thank you for the prompt response!
Both world files were present in the same folder, but for some reason, Gazebo was still launching the wrong one. After restarting the system, it worked correctly.

Regards
Rithik

[girishkumar.kannan]

Hi @Rithik02 ,

Glad that you were able to find a way to fix it.

Could you please explain exactly on what you mean by “after restarting the system”.
What exactly did you restart? Your computer or The Construct course? What steps exactly?

Regards,
Girish