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82995a8343
bullet3/examples/pybullet/quadruped.py
Erwin Coumans 82995a8343 pybullet, more robust multi-server connections 
Windows shared memory: allow to use custom key.
Improve GUI performance on Windows, submit letters in text as a batch (fewer draw-calls)
quadruped.py: first try to connect to SHARED_MEMORY, if it fails (<0) use GUI
increase Chrome about://tracing json export capacity (press 'p' in Example Browser)
UDP physics server: add --port and --sharedMemoryKey command-line arguments
PhysicsServerExample: add --sharedMemoryKey command-line option (for VR example too)
ExampleBrowser: sleep a few milliseconds if rendering is too fast, use --minUpdateTimeMicroSecs=0 to disable
2016-12-28 21:51:54 -08:00

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import pybullet as p
import time
import math
physId = p.connect(p.SHARED_MEMORY)
if (physId<0):
p.connect(p.GUI)
p.loadURDF("plane.urdf")
p.setGravity(0,0,-1)
p.setRealTimeSimulation(0)
quadruped = p.loadURDF("quadruped/quadruped.urdf",1,-2,2)
#p.getNumJoints(1)
#right front leg
p.resetJointState(quadruped,0,1.57)
p.resetJointState(quadruped,2,-2.2)
p.resetJointState(quadruped,3,-1.57)
p.resetJointState(quadruped,5,2.2)
p.createConstraint(quadruped,2,quadruped,5,p.JOINT_POINT2POINT,[0,0,0],[0,0.01,0.2],[0,-0.015,0.2])
p.setJointMotorControl(quadruped,0,p.POSITION_CONTROL,1.57,1)
p.setJointMotorControl(quadruped,1,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,2,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,3,p.POSITION_CONTROL,-1.57,1)
p.setJointMotorControl(quadruped,4,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,5,p.VELOCITY_CONTROL,0,0)
#left front leg
p.resetJointState(quadruped,6,1.57)
p.resetJointState(quadruped,8,-2.2)
p.resetJointState(quadruped,9,-1.57)
p.resetJointState(quadruped,11,2.2)
p.createConstraint(quadruped,8,quadruped,11,p.JOINT_POINT2POINT,[0,0,0],[0,-0.01,0.2],[0,0.015,0.2])
p.setJointMotorControl(quadruped,6,p.POSITION_CONTROL,1.57,1)
p.setJointMotorControl(quadruped,7,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,8,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,9,p.POSITION_CONTROL,-1.57,1)
p.setJointMotorControl(quadruped,10,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,11,p.VELOCITY_CONTROL,0,0)
#right back leg
p.resetJointState(quadruped,12,1.57)
p.resetJointState(quadruped,14,-2.2)
p.resetJointState(quadruped,15,-1.57)
p.resetJointState(quadruped,17,2.2)
p.createConstraint(quadruped,14,quadruped,17,p.JOINT_POINT2POINT,[0,0,0],[0,0.01,0.2],[0,-0.015,0.2])
p.setJointMotorControl(quadruped,12,p.POSITION_CONTROL,1.57,1)
p.setJointMotorControl(quadruped,13,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,14,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,15,p.POSITION_CONTROL,-1.57,1)
p.setJointMotorControl(quadruped,16,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,17,p.VELOCITY_CONTROL,0,0)
#left back leg
p.resetJointState(quadruped,18,1.57)
p.resetJointState(quadruped,20,-2.2)
p.resetJointState(quadruped,21,-1.57)
p.resetJointState(quadruped,23,2.2)
p.createConstraint(quadruped,20,quadruped,23,p.JOINT_POINT2POINT,[0,0,0],[0,-0.01,0.2],[0,0.015,0.2])
p.setJointMotorControl(quadruped,18,p.POSITION_CONTROL,1.57,1)
p.setJointMotorControl(quadruped,19,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,20,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,21,p.POSITION_CONTROL,-1.57,1)
p.setJointMotorControl(quadruped,22,p.VELOCITY_CONTROL,0,0)
p.setJointMotorControl(quadruped,23,p.VELOCITY_CONTROL,0,0)
p_gain = 2
speed = 10
amplitude = 1.3
#stand still
t_end = time.time() + 2
while time.time() < t_end:
p.stepSimulation()
p.setGravity(0,0,-10)
jump_amp = 0.5
#jump
t_end = time.time() + 10
i=0
t=0
while time.time() < t_end:
t = time.time()
p.setJointMotorControl(quadruped,0,p.POSITION_CONTROL,math.sin(t*speed)*jump_amp+1.57,p_gain)
p.setJointMotorControl(quadruped,3,p.POSITION_CONTROL,-math.sin(t*speed)*jump_amp-1.57,p_gain)
p.setJointMotorControl(quadruped,6,p.POSITION_CONTROL,math.sin(t*speed)*jump_amp+1.57,p_gain)
p.setJointMotorControl(quadruped,9,p.POSITION_CONTROL,-math.sin(t*speed)*jump_amp-1.57,p_gain)
p.setJointMotorControl(quadruped,12,p.POSITION_CONTROL,math.sin(t*speed)*jump_amp+1.57,p_gain)
p.setJointMotorControl(quadruped,15,p.POSITION_CONTROL,-math.sin(t*speed)*jump_amp-1.57,p_gain)
p.setJointMotorControl(quadruped,18,p.POSITION_CONTROL,math.sin(t*speed)*jump_amp+1.57,p_gain)
p.setJointMotorControl(quadruped,21,p.POSITION_CONTROL,-math.sin(t*speed)*jump_amp-1.57,p_gain)
p.stepSimulation()
#hop forward
t_end = time.time() + 30
i=0
while time.time() < t_end:
t = time.time()
p.setJointMotorControl(quadruped,0,p.POSITION_CONTROL,math.sin(t*speed)*amplitude+1.57,p_gain)
p.setJointMotorControl(quadruped,3,p.POSITION_CONTROL,-1.57,p_gain)
p.setJointMotorControl(quadruped,6,p.POSITION_CONTROL,math.sin(t*speed)*amplitude+1.57,p_gain)
p.setJointMotorControl(quadruped,9,p.POSITION_CONTROL,-1.57,p_gain)
p.setJointMotorControl(quadruped,12,p.POSITION_CONTROL,math.sin(t*speed+3.14)*amplitude+1.57,p_gain)
p.setJointMotorControl(quadruped,15,p.POSITION_CONTROL,-1.57,p_gain)
p.setJointMotorControl(quadruped,18,p.POSITION_CONTROL,math.sin(t*speed+3.14)*amplitude+1.57,p_gain)
p.setJointMotorControl(quadruped,21,p.POSITION_CONTROL,-1.57,p_gain)
p.stepSimulation()
#walk
t_end = time.time() + 120
i=0
while time.time() < t_end:
t = time.time()
p.setJointMotorControl(quadruped,0,p.POSITION_CONTROL,math.sin(t*3)*.3+1.57,1)
p.setJointMotorControl(quadruped,3,p.POSITION_CONTROL,-1.57,1)
p.setJointMotorControl(quadruped,6,p.POSITION_CONTROL,math.sin(t*3+0.5*3.14)*.3+1.57,1)
p.setJointMotorControl(quadruped,9,p.POSITION_CONTROL,-1.57,1)
p.setJointMotorControl(quadruped,12,p.POSITION_CONTROL,math.sin(t*3+3.14)*.3+1.57,1)
p.setJointMotorControl(quadruped,15,p.POSITION_CONTROL,-1.57,1)
p.setJointMotorControl(quadruped,18,p.POSITION_CONTROL,math.sin(t*3+1.5*3.14)*.3+1.57,1)
p.setJointMotorControl(quadruped,21,p.POSITION_CONTROL,-1.57,1)
p.stepSimulation()
p.setRealTimeSimulation(1)
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