Nate Koenig wrote: > Hello, > > Gazebo will set the model_name to and empty string once it has > processed your request. So you should send your request, wait until > the model_name is "", and then read the response. > > -nate > On a related matter, there are race conditions if two clients try to use the simulation interface at the same time. Client1: writes a request Client2: wants to make a request, but lets say its clever, detects that model_name is not empty, and does nothing. Server: fill in pose data, set model_name to 0 Client2: ah, model_name is now 0, so I fill my own request in... Client1: oh noes, where did my anwser go?
All other interfaces don't have this problem, as it's the only one that process requests which require an anwser. > On Thu, Apr 17, 2008 at 11:53 AM, Maciej Gabka <[EMAIL PROTECTED]> wrote: > >> hello >> I have got a little problem working with gazebo::SimulationIface, I have >> seen an example in the source directory >> simiface.cc. everything working with one robot , but I have a question how >> get positions from for example 2 robots. >> I try simply send 2 messages to the SimulationIface sth like that: >> uint8_t name[512] = "hmt_test1"; >> uint8_t cmd[32] = "get_pose"; >> simIface0->Lock(1); >> client0->Query(0); >> memcpy((simIface0)->data->model_name, name, 512); >> memcpy((simIface0)->data->model_req,cmd, 32); >> videoData.data[0]->pos.x = >> (simIface0)->data->model_pose.pos.x; //x >> videoData.data[0]->pos.y = >> (simIface0)->data->model_pose.pos.y; //y >> videoData.data[0]->rot = (simIface0)->data->model_pose.yaw; >> simIface0->Unlock(); >> This piece of code is in the while loop where I change uint8_t name[512] = >> "hmt_test1" into uint8_t name[512] = "hmt_test2" where hmt_test2 is the name >> of my second robot model. >> but changing the name in memcpy doesnt work...in all cases I recieve the >> same robot positions but sometimes this is first robot position and >> sometimes second robot...its looks like client is not synchronized with the >> server.. >> >> Anybody can help me? >> >> Thank you! >> maciek >> -- >> View this message in context: >> http://www.nabble.com/gazebo-0.9-pre2-tp16750979p16750979.html >> Sent from the playerstage-gazebo mailing list archive at Nabble.com. >> >> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference >> Don't miss this year's exciting event. There's still time to save $100. >> Use priority code J8TL2D2. >> >> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone >> _______________________________________________ >> Playerstage-gazebo mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/playerstage-gazebo >> >> > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save $100. > Use priority code J8TL2D2. > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > _______________________________________________ > Playerstage-gazebo mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/playerstage-gazebo > > ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Playerstage-gazebo mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/playerstage-gazebo
