Custom gazebo world not loading in launchfile

asked 2021-02-05 00:43:55 -0500

GeorgNo

183 ●7 ●23 ●22

Hello there,

I have quite a confusing problem. I created a custom Gazebo world that I am able to launch via:

$ gazebo /home/georg/catkin_ws/src/ml/worlds/chapter1_3.world

as well as with:

$ roslaunch gazebo_ros empty_world.launch world_name:="/home/georg/catkin_ws/src/ml/worlds/chapter1_3.world"

but with the following launchfile I can't manage

<launch>
    <arg name="world_file" default="$(find ml)/worlds/chapter1_3.world"/>

    <arg name="paused" default="false"/>
    <arg name="use_sim_time" default="true"/>
    <arg name="gui" default="true"/>
    <arg name="headless" default="false"/>
    <arg name="debug" default="false"/>
    <arg name="extra_gazebo_args" default="--verbose"/>

    <include file="$(find gazebo_ros)/launch/empty_world.launch">
        <arg name="world_name" value="$(arg world_file)"/>
        <arg name="paused" value="$(arg paused)"/>
        <arg name="use_sim_time" value="$(arg use_sim_time)"/>
        <arg name="gui" value="$(arg gui)"/>
        <arg name="headless" value="$(arg headless)"/>
        <arg name="debug" value="$(arg debug)"/>
        <arg name="extra_gazebo_args" value="$(arg extra_gazebo_args"/>
    </include>
</launch>

And I can use roscd mlto navigate to /home/georg/catkin_ws/src/ml.

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What is the error that you are getting?

skpro19 ( 2021-02-05 00:51:44 -0500 )edit

None, it just spawns the empty world.

GeorgNo ( 2021-02-05 01:24:11 -0500 )edit

After adding: <arg name="verbose" value="true"/> inside the include tag I can see the following error:

[Wrn] [SystemPaths.cc:459] File or path does not exist [""] [$(arg]
[Err] [Server.cc:444] Could not open file[$(arg]
[Wrn] [Server.cc:359] Falling back on worlds/empty.world

Replaced $(find ml)/worlds/chapter1_3.world with the absolute path and still the same error.

However if I run roslaunch gazebo_ros empty_world.launch verbose:="true" world_name:="/home/georg/catkin_ws/src/ml/worlds/chapter1_3.world the world spawns.

GeorgNo ( 2021-02-05 01:51:48 -0500 )edit

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