I have compiled the code (from Chapter 5 in the tutorial) successfully. However, it does not say in the tutorial how to include it in worldfile so the simulation can run that control code. I checked the "simple.cfg" file and noticed it uses 'cntrl "wander"' to control the robot for simulation. And I did the same thing in my configuration file and included 'ctrl "bigbob"' but when I run it I get the aforementioned error.

As far as I understand, right now player/stage does not know the path of "bigbob" location, hence throwing the error. So my question is how would I include "bigbob" in the player/stage path so that it would know where to look for? Generally speaking, if I were to write a custom control code for a robot, how would player/stage call it ?

Any suggestion would be greatly appreciated.


On Fri, Jul 29, 2011 at 8:45 PM, Arkapravo Bhaumik <arkapravobhaumik@gmail.com> wrote:

I am not completely sure, but I think it is an issue of mismatch - Jennifer's tutorials are for Stage 3.2.X while you are using Stage 4.0.0, which is a more advanced version of Stage. You will have to rewrite some of the code to make it work in Stage 4.0.0

That is all I can say, I do not know much about Stage 4.X.X, still happy with Stage 3.2.2



On 30 July 2011 00:14, Achyut Shrestha <shresthachyut@gmail.com> wrote:

I am new to Player/Stage and I am following Jennifer Owen's tutorial to learn it. I successfully complied the "bigbob.cc" for controlling a robot and added "bigbob" in worldfie. However when I run the command "player empty.cfg", I get the following error:

Libtool error: file not found. Can't open your plugin controller. Quitting
err: Failed to open "bigbob". Check that it can be found by searching the directories in your STAGEPATH environment variable, or the current directory if STAGEPATH is not set.]
 (/builddir/build/BUILD/Stage-4.0.0-src/libstage/model_load.cc LoadControllerModule)
libtool error #2

I echoed STAGEPATH and it was blank so I exported to include "/usr/lib" (as suggested in one of the postings) however it still gives me the same error. I was able to run "simple.cfg" without any problem even before I exported STAGEPATH. What am I missing? Please help.


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