Difference between revisions of "Collision start"
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{{LSL_Event|event_id=5|event_delay|event=collision_start | {{Issues/SVC-3306}}{{LSL_Event|event_id=5|event_delay|event=collision_start | ||
|p1_type=integer|p1_name=num_detected|p1_desc | |p1_type=integer|p1_name=num_detected|p1_desc | ||
|event_desc=Triggered when task starts colliding with another task | |event_desc=Triggered when task starts colliding with another task | ||
|constants | |constants | ||
|spec | |spec | ||
|caveats | |caveats= | ||
|examples | * Will not detect collisions with ground. Use [[land_collision_start]] instead. | ||
* Phantom objects can never receive trigger collision events. | |||
* <code>[[llVolumeDetect]]([[TRUE]])</code> 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. | |||
* Only a physical object will get collision events from colliding with a non-physical object. | |||
|examples=<syntaxhighlight lang="lsl2">default | |||
{ | |||
collision_start(integer num) | |||
{ | |||
llSay(0,"No pushing."); | |||
} | |||
}</syntaxhighlight> | |||
<syntaxhighlight lang="lsl2"> | |||
list DetectedAvatars = []; | |||
default | |||
{ | |||
state_entry() | |||
{ | |||
llVolumeDetect(TRUE); // Enable detection of people colliding with object.... | |||
} | |||
collision_start(integer detected) | |||
{ | |||
integer index = llListFindList(DetectedAvatars, [llDetectedKey(0)]); | |||
if (index == -1) | |||
{ | |||
llInstantMessage(llDetectedKey(0), " Welcome to the Community"); | |||
DetectedAvatars = llListInsertList(DetectedAvatars, [llDetectedKey(0)], -1); | |||
if (llGetListLength(DetectedAvatars) == 2) | |||
{ | |||
DetectedAvatars = llDeleteSubList(DetectedAvatars, 1, 2); | |||
} | |||
} | |||
} | |||
} | |||
</syntaxhighlight> | |||
|helpers | |helpers | ||
|also_header | |also_header | ||
| Line 11: | Line 46: | ||
{{LSL DefineRow||[[collision_end]]|}} | {{LSL DefineRow||[[collision_end]]|}} | ||
|also_functions={{LSL DefineRow||[[llPassCollisions]]|}} | |also_functions={{LSL DefineRow||[[llPassCollisions]]|}} | ||
{{LSL DefineRow||[[llCollisionFilter]]|}} | |||
{{LSL DefineRow||[[llCollisionSound]]|}} | |||
{{LSL DefineRow||[[llCollisionSprite]]|}} | |||
{{LSL DefineRow||[[llVolumeDetect]]|}} | |||
|also_articles | |also_articles | ||
|also_footer | |also_footer | ||
|notes | |notes | ||
|mode | |mode | ||
| | |issues | ||
|cat1=Collision | |cat1=Collision | ||
|cat2=Detected | |cat2=Detected | ||
|cat3 | |cat3=Collision Events | ||
|cat4 | |cat4=Passable | ||
}} | |||
Latest revision as of 19:01, 12 December 2023
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Description
Event: collision_start( integer num_detected ){ ; }Caveats
- Will not detect collisions with ground. Use land_collision_start instead.
- 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.
- Only a physical object will get collision events from colliding with a non-physical object.
Examples
default
{
collision_start(integer num)
{
llSay(0,"No pushing.");
}
}
list DetectedAvatars = [];
default
{
state_entry()
{
llVolumeDetect(TRUE); // Enable detection of people colliding with object....
}
collision_start(integer detected)
{
integer index = llListFindList(DetectedAvatars, [llDetectedKey(0)]);
if (index == -1)
{
llInstantMessage(llDetectedKey(0), " Welcome to the Community");
DetectedAvatars = llListInsertList(DetectedAvatars, [llDetectedKey(0)], -1);
if (llGetListLength(DetectedAvatars) == 2)
{
DetectedAvatars = llDeleteSubList(DetectedAvatars, 1, 2);
}
}
}
}
See Also
Events
| • | collision | |||
| • | collision_end |
Functions
| • | llPassCollisions | |||
| • | llCollisionFilter | |||
| • | llCollisionSound | |||
| • | llCollisionSprite | |||
| • | llVolumeDetect |
Deep Notes
Issues
All Issues
~ Search JIRA for related Issues
|
|
SVC-3306 | A | 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_start( integer num_detected ); |