Howdy. I am having sticking issues with c_move, and can't seem to figure it out. My player entity (using OBB; .poly=0) is moving around stationary models (.poly=1), and can easily get stuck within them (video -- WMB, 3MB). I have enable_polycollision=2. Any thoughts?

Thanks.

You may be doing this already, but if there is any rotation of the player, you
must use c_rotate to do it. Even though you are using c_move to move in a
linear direction, if you use something like "my.pan" to rotate, sticking will
still occur.

I double-checked that on your suggestion, and I'm actually not rotating the player object at all. Nuts.

Yes, it's a bug. One that has been in the collision system for a long time, and will probably not go away soon. I get the same thing.

A couple of solutions that I have seen posted are:

*Use a simple, invisible cube model for the collision model.

*Try to keep the moving entity at least three quants away from other geometry.

Havn't resolved it myself yet, even using rotate rather than pan despite the collision system used. (Mind you, thats not saying much as my comprehension regarding scripting is rudumentary, even after 4 years!)
Very interested to find a solution with current version.

Bummer. Thanks for the suggestions.

Here's a possible solution;

Create an entity, attach to object .x , set texture flag to 'none' to obtain an invisible collision bounding container.

I think this may work for you.

Woops and HAH! didnt read A.Russels post properly, he already says that.

For my movement I use a cube for collision, and then a passable model for the actual detail. This also allows my passable model to have independent rotation and the such. I keep the cube off the ground at all times using trace with the set_box flag. Some people believe it's best to let your entity drag along the ground, I haven't tried this so cannot comment. But I find that tracing downwards, and just changing your angle depending on ground normals work well. Also, have the movement friction set very low. It works quite well, and have not had any problems with the majority of static geometry.

- Be sure to use c_rotate() for any rotations.
- Be sure to use c_move() for any movement, that includes any z movement or changes in your z pos. I know when I had problems with the model catching, it often was from me moving, even subtly, the model without c_move().

Heres what I set in the begging of function for the collision cube:


//my.fat = on;
//my.narrow = on;
c_setminmax(my);
ph_setgravity(vector(0,0,-gravity));
my.polygon = off;
move_min_z = -1;
move_friction =0.25;
Disable_Z_Glide = 0;

Heres what I use for my static geometry:

wait(1);
my.fat = on;
my.narrow = on;
c_setminmax(me);
my.polygon = on;

wait(300);
my.dynamic = off;


And if you want your model to update it's collision realtime(only for per-poly models):

while(1)
{
c_updatehull(my, 1);
wait(1);
}

I basically have 1 c_rotate and 1 c_move() in my collision cubes function, all the different forces add up into the vector I use to move/rotate by, I also use movement in absolute coordinates:

move.tilt = ang(you.tilt - my.tilt);
move.roll = ang(you.rroll - my.roll);

you.kturn_speed = turn_direction * turn_gear * turn_sharp * skid_turn * air_turn; you.kturn_speed *= player_lock;
move.pan = turn_direction * turn_gear * turn_sharp * skid_turn * air_turn * you.ion_puller * time;

c_rotate(my,move.pan,ignore_passable + ignore_passents + glide);

move.x = run_speed * run_direction * air_speed * skid_forward * time;
move.y = skid_slide * time; you.kslide_speed = skid_slide;
vec_set(temp.x, nullvector); temp.pan = my.pan; temp.roll = you.rroll; temp.tilt = my.tilt;
vec_rotate(move.x, temp.pan);

move.z = z_movement;

c_move(my,nullvector,move.x,ignore_passable + ignore_passents + glide + ignore_content);

Hopefully this helps. The collision system works quite well, it just takes a while to get the code right. The physics engine though, well, I wouldn't recommend it for bigger projects, best to just use c_move().

Yeah, I guess I can't assure that for every project, as there all different. It also took me quite a while to get it all working smoothly with mine...