tb3.launch

<launch>
<arg name="model" default="$(env TURTLEBOT3_MODEL)" doc="model type [burger, waffle, waffle_pi]"/>
 <arg name="first_tb3" default="tb3_0"/>
<arg name="second_tb3" default="tb3_1"/>
<arg name="third_tb3" default="tb3_2"/>
<arg name="fourth_tb3" default="tb3_3"/>
<arg name="fifth_tb3" default="tb3_4"/>

<group ns = "$(arg first_tb3)">
  <param name="model" value="$(arg model)"/>
  <node pkg="president" type="tb3_0" name="tb3_0"  output="screen">
  </node>
</group>

<group ns = "$(arg second_tb3)">
  <param name="model" value="$(arg model)"/>
  <node pkg="president" type="tb3_1" name="tb3_1"  output="screen">
  </node>
</group>

<group ns = "$(arg third_tb3)">
  <param name="model" value="$(arg model)"/>
  <node pkg="president" type="tb3_2" name="tb3_2"  output="screen">
  </node>
</group>

<group ns = "$(arg fourth_tb3)">
  <param name="model" value="$(arg model)"/>
  <node pkg="president" type="tb3_3" name="tb3_3"  output="screen">
  </node>
</group>

<group ns = "$(arg fifth_tb3)">
  <param name="model" value="$(arg model)"/>
  <node pkg="president" type="tb3_4" name="tb3_4"  output="screen">
  </node>
</group>

<group ns = "$(arg attacker)">
  <param name="model" value="$(arg model)"/>
  <node pkg="president" type="tb3_4" name="tb3_4"  output="screen">
  </node>
</group>

</launch>