Difference between revisions of "Collision"

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m (Added caveats for more times when collisions do not work.)
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|spec
 
|spec
 
|caveats=
 
|caveats=
 +
* Max number detected is 8.
 +
* Smallest repeat rate is approximatively 0.13 seconds.
 
* Will not detect collisions with [[ground]]; use [[land_collision]] instead.
 
* Will not detect collisions with [[ground]]; use [[land_collision]] instead.
 
* Will not detect collisions between an avatar sitting on the task and the task itself (avatars are linked to objects they sit on so there is no collision, use the [[changed]] event to detect sits).
 
* Will not detect collisions between an avatar sitting on the task and the task itself (avatars are linked to objects they sit on so there is no collision, use the [[changed]] event to detect sits).
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* llVolumeDetect(TRUE) objects get trigger collision_start and collision_end but not collision() events.
 
* llVolumeDetect(TRUE) objects get trigger collision_start and collision_end but not collision() events.
 
* A collision with a hovering avatar does not trigger collisions, unless the avatar turns or moves.
 
* A collision with a hovering avatar does not trigger collisions, unless the avatar turns or moves.
 +
* A collision with a physical object or avatar resting on object does not continuously trigger collisions but for a few time, unless there is movement.
 
* Only a physical object will get collision events from colliding with a non-physical object.
 
* Only a physical object will get collision events from colliding with a non-physical object.
 
|examples=<lsl>//Will turn phantom when someone bumps into it if on the list
 
|examples=<lsl>//Will turn phantom when someone bumps into it if on the list

Revision as of 20:59, 16 May 2011

Description

Event: collision( integer num_detected ){ ; }

Triggered while task is colliding with another task.

• integer num_detected

Caveats

  • Max number detected is 8.
  • Smallest repeat rate is approximatively 0.13 seconds.
  • Will not detect collisions with ground; use land_collision instead.
  • Will not detect collisions between an avatar sitting on the task and the task itself (avatars are linked to objects they sit on so there is no collision, use the changed event to detect sits).
  • Phantom objects can never receive trigger collision events.
  • llVolumeDetect(TRUE) objects get trigger collision_start and collision_end but not collision() events.
  • A collision with a hovering avatar does not trigger collisions, unless the avatar turns or moves.
  • A collision with a physical object or avatar resting on object does not continuously trigger collisions but for a few time, unless there is movement.
  • Only a physical object will get collision events from colliding with a non-physical object.
All Issues ~ Search JIRA for related Bugs

Examples

<lsl>//Will turn phantom when someone bumps into it if on the list

list access_list = ["Governor Linden"];

default {

   collision(integer num_detected)
   {
       if(~llListFindList(access_list, (list)llDetectedName(0)))
       {
           llSetStatus(STATUS_PHANTOM, TRUE);
       }
   }

}</lsl>

See Also

Deep Notes

Issues

All Issues

~ Search JIRA for related Issues
   Add enumeration to llPassCollisions() to provide PASS_ALWAYS, PASS_IF_NOT_HANDLED, and PASS_NEVER as explicit options.
(Was: Collisions passed to parent REGARDLESS llPassCollisions(FALSE) in child)

Signature

event void collision( integer num_detected );