import pybullet as p
import time

p.connect(p.GUI)
p.setGravity(0, 0, -10)
p.setPhysicsEngineParameter(enableSAT=1)
p.loadURDF("cube_concave.urdf", [0, 0, -25],
           globalScaling=50,
           useFixedBase=True,
           flags=p.URDF_INITIALIZE_SAT_FEATURES)
p.loadURDF("cube.urdf", [0, 0, 1], globalScaling=1, flags=p.URDF_INITIALIZE_SAT_FEATURES)
p.loadURDF("duck_vhacd.urdf", [1, 0, 1], globalScaling=1, flags=p.URDF_INITIALIZE_SAT_FEATURES)

while (p.isConnected()):
  p.stepSimulation()
  pts = p.getContactPoints()
  #print("num contacts = ", len(pts))
  time.sleep(1. / 240.)