bullet3/test/SharedMemory/test.c

//#include "SharedMemoryCommands.h"
#include "PhysicsClientC_API.h"
#include "Bullet3Common/b3Logging.h"
#include <string.h>

struct test
{
	int unused;
};

#include <stdio.h>

int main(int argc, char* argv[])
{
	int i, dofCount , posVarCount, dofIndex, ret ,numJoints, allowSharedMemoryInitialization=0;
    int sensorJointIndexLeft=-1;
    int sensorJointIndexRight=-1;
    int statusType = -1;
	const char* urdfFileName = "r2d2.urdf";
	double gravx=0, gravy=0, gravz=-9.8;
	double timeStep = 1./60.;
	double startPosX, startPosY,startPosZ;
	int imuLinkIndex = -1;

	
	b3PhysicsClientHandle sm;
	
	printf("hello world\n");

	sm = b3ConnectSharedMemory(SHARED_MEMORY_KEY);
	if (b3CanSubmitCommand(sm))
	{
        {
        b3SharedMemoryCommandHandle command = b3InitPhysicsParamCommand(sm);
		ret = b3PhysicsParamSetGravity(command,  gravx,gravy, gravz);
		ret = b3PhysicsParamSetTimeStep(command,  timeStep);
		b3SubmitClientCommandAndWaitStatus(sm, command);
        }

        {
            b3SharedMemoryCommandHandle command = b3LoadUrdfCommandInit(sm, urdfFileName);
            //setting the initial position, orientation and other arguments are optional
            startPosX =2;
            startPosY =3;
            startPosZ = 1;
            ret = b3LoadUrdfCommandSetStartPosition(command, startPosX,startPosY,startPosZ);
            b3SubmitClientCommandAndWaitStatus(sm, command);
        }
        
		numJoints = b3GetNumJoints(sm);
        for (i=0;i<numJoints;i++)
        {
            struct b3JointInfo jointInfo;
            b3GetJointInfo(sm,i,&jointInfo);
            
            printf("jointInfo[%d].m_jointName=%s\n",i,jointInfo.m_jointName);
            //pick the IMU link index based on torso name
            if (strstr(jointInfo.m_linkName,"base_link"))
            {
                imuLinkIndex = i;
            }
            
            //pick the joint index based on joint name
            if (strstr(jointInfo.m_jointName,"base_to_left_leg"))
            {
                sensorJointIndexLeft = i;
            }
            if (strstr(jointInfo.m_jointName,"base_to_right_leg"))
            {
                sensorJointIndexRight = i;
            }
            
        }
        
        if ((sensorJointIndexLeft>=0) || (sensorJointIndexRight>=0))
        {
            b3SharedMemoryCommandHandle command = b3CreateSensorCommandInit(sm);
            b3SharedMemoryStatusHandle statusHandle;
            if (imuLinkIndex>=0)
            {
				 ret = b3CreateSensorEnableIMUForLink(command, imuLinkIndex, 1);
            }
            
            if (sensorJointIndexLeft>=0)
            {
			  ret = b3CreateSensorEnable6DofJointForceTorqueSensor(command, sensorJointIndexLeft, 1);
            }
            if(sensorJointIndexRight>=0)
            {
                ret = b3CreateSensorEnable6DofJointForceTorqueSensor(command, sensorJointIndexRight, 1);
            }
            statusHandle = b3SubmitClientCommandAndWaitStatus(sm, command);
            
        }
        
        
        {
            b3SharedMemoryStatusHandle statusHandle;
             b3SharedMemoryCommandHandle command = b3CreateBoxShapeCommandInit(sm);
            ret = b3CreateBoxCommandSetStartPosition(command, 0,0,-1);
            ret = b3CreateBoxCommandSetStartOrientation(command,0,0,0,1);
            ret = b3CreateBoxCommandSetHalfExtents(command, 10,10,1);
            statusHandle = b3SubmitClientCommandAndWaitStatus(sm, command);

        }

        {
            b3SharedMemoryCommandHandle command = b3RequestActualStateCommandInit(sm);
            b3SharedMemoryStatusHandle statusHandle;
            statusHandle = b3SubmitClientCommandAndWaitStatus(sm, command);
            int statusType = b3GetStatusType(statusHandle);
            
            if (statusType == CMD_ACTUAL_STATE_UPDATE_COMPLETED)
            {
#if 0
                posVarCount =status.m_sendActualStateArgs.m_numDegreeOfFreedomQ;
                dofCount =status.m_sendActualStateArgs.m_numDegreeOfFreedomU;
                
                b3Printf("posVarCount = %d\n",posVarCount);
                printf("dofCount = %d\n",dofCount);
#endif
            }
        }
        
        {
            b3SharedMemoryStatusHandle statusHandle;
             b3SharedMemoryCommandHandle command = b3JointControlCommandInit( sm, CONTROL_MODE_VELOCITY);
            for ( dofIndex=0;dofIndex<dofCount;dofIndex++)
            {
                b3JointControlSetDesiredVelocity(command,dofIndex,1);
                b3JointControlSetMaximumForce(command,dofIndex,100);
            }
             statusHandle = b3SubmitClientCommandAndWaitStatus(sm, command);

        }
        ///perform some simulation steps for testing
        for ( i=0;i<100;i++)
        {
            b3SubmitClientCommandAndWaitStatus(sm, b3InitStepSimulationCommand(sm));
        }
        
        {
            b3SubmitClientCommandAndWaitStatus(sm, b3RequestActualStateCommandInit(sm));
        }
        
        
#if 0
        if (sensorJointIndexLeft>=0)
        {
            b3Printf("Sensor for joint [%d] = %f,%f,%f\n", sensorJointIndexLeft,
                status.m_sendActualStateArgs.m_jointReactionForces[6*sensorJointIndexLeft+0],
                status.m_sendActualStateArgs.m_jointReactionForces[6*sensorJointIndexLeft+1],
                status.m_sendActualStateArgs.m_jointReactionForces[6*sensorJointIndexLeft+2]);
        }
        
        if (sensorJointIndexRight>=0)
        {
            b3Printf("Sensor for joint [%d] = %f,%f,%f\n", sensorJointIndexRight,
                     status.m_sendActualStateArgs.m_jointReactionForces[6*sensorJointIndexRight+0],
                     status.m_sendActualStateArgs.m_jointReactionForces[6*sensorJointIndexRight+1],
                     status.m_sendActualStateArgs.m_jointReactionForces[6*sensorJointIndexRight+2]);
        }
#endif
        {
            b3SubmitClientCommandAndWaitStatus(sm, b3InitResetSimulationCommand(sm));
        }
        
	}


	b3DisconnectSharedMemory(sm);
}