added changes to support multi levels based on difficulty

[anishk85]

…a course parameter to support multi levels in drone cat mouse.

[javizqh]

Please state the purpose of adding a parameter that is not used anywhere.

[anishk85]

it was done to support different levels of chase for mouse drone.

suppose this is set Hard
the HAL api when calls get parameters function it receives course hard and based on that mouse drone follows a predefined path.

for cat this will be empty.

and for other excercise not using this they can simply pass it as it is a parameter.

[anishk85]

I have one more way of doing this via introducing three launchers
drone_cat_mouse_easy.launch.py course = "easy"
drone_cat_mouse_medium.launch.py course = "medium"
drone_cat_mouse_hard.launch.py course = "hard"

that requires change in db passing extra config

it will prevent quadrotor.launch.py to pass that course parameter

[anishk85]

this pr is for discussion of this only which way should i go ?

@pariaspe told me to discuss this with you.

for me both approaches seems fine as by introducing new parameter we are opening a path for any future excersice as well that might need some parameter or something.

do let me know your opinion as well.

[javizqh]

If this is meant to combine with other changes, please state it at the beginning, adding the link to the remaining PR. I cannot know what you try to do if you only open a PR for a part of the changes.

[anishk85]

If this is meant to combine with other changes, please state it at the beginning, adding the link to the remaining PR. I cannot know what you try to do if you only open a PR for a part of the changes.

sure sure in coming days i will push the pr on ra also using these changes once i finalize with algorithms that we will be using.

for now if you want i can push a minimal verison of that.

[anishk85]

but i need an answer about the approach is it okay to go with this pr or the other approach which i explained earlier.
because changes in ra(drone cat mouse related) are dependent on this pr,

[javizqh]

I cannot test this without the others changes