look at ventilator's sign

http://www.coniserver.net/ubbthreads/showflat.php/Cat/0/Number/730904/page/0/fpart/3/vc/1

okay, looking like working... :-)
now, question about upVector

when i add
Code:

---

  
NewtonJoint* m_upVector;
m_upVector = NewtonConstraintCreateUpVector (nworld, vector(0,1,0), MH.NewtonChar); 

---

, model falls down through floor...

hey VeT
looks like you've defined a hinge wrong, if i remember correct you have to convert vector somehow. You may check my hinges example

greetings :-D
okay, i'd look to your example

sometimes the question comes up how to do phent_addforceglobal()/phent_addforcelocal() with newton.

here is a short (untested) code snippet:
Code:

---

newton_bodyaddforceglobal(NewtonBody *body, VECTOR *force, VECTOR *point) // add force at point in global coordinate system
{
  ENTITY *entity = (ENTITY*)NewtonBodyGetUserData(body);
  VECTOR r, torque;
  vec_diff(r, point, entity->x);
  vec_cross(torque, r, force);
  NewtonBodyAddForce(body, force);
  NewtonBodyAddTorque(body, torque);
}

newton_bodyaddforcelocal(NewtonBody *body, VECTOR *force, VECTOR *point) // add force at point in entity coordinate system
{
  ENTITY *entity = (ENTITY*)NewtonBodyGetUserData(body);
  VECTOR globalforce, globalpoint;
  vec_set(globalforce, force);
  vec_set(globalpoint, point);
  vec_rotate(globalforce, entity->pan);
  vec_rotate(globalpoint, entity->pan);
  vec_add(globalpoint, entity->x);
  newton_bodyaddforceglobal(globalforce, globalpoint);
}

---

i think lite-c still doesn't come with a vec_cross() function so you have to do one yourself.

(...and i guess you also should apply QUANTTOMETER in those functions.)

Has anyone tried to set up a Material system and implement a water block.

i tried materials way back, but some newton function crashed all the time. maybe i'll try again later

and what about NewtonBodyGetVelocity?
in debug panel, there are always zeros... so i tried

NewtonBodyGetVelocity(MH.NewtonChar,vectorf(temp_vec2.x,temp_vec2.y,temp_vec2.z));
NewtonBodySetVelocity(MH.NewtonChar,vectorf(temp_vec2.x,temp_vec2.y,temp_vec2.z));

primary, this code mustnd do anything... but in real this works like
NewtonBodySetVelocity(MH.NewtonChar,vectorf(nullvector));

so, how can i get the speed of entity?

vectorf() doesn't make sense for getvelocity since it just returns a temporary pointer which you can't really access afterwards.

try this:

float velocity[3];
NewtonBodyGetVelocity(MH.NewtonChar, velocity);
temp_vec2.x = velocity[0];
temp_vec2.y = velocity[1];
temp_vec2.z = velocity[2];

yeah, thanks, that's it :-)