LlVolumeDetect

If detect is TRUE, VolumeDetect is enabled, physical object and avatars can pass through the object. This works much like Phantom, but unlike Phantom, VolumeDetect objects trigger collision_start and collision_end events when interpenetrating. Collision events will trigger in any script in the object.

Differences

There are a couple differences in how Phantom and VolumeDetect handle collisions; specifically which events are supported and how they handle the ground.

• llDetectedLinkNumber will return 0 in collision events of VolumeDetect objects (SVC-2996).
• It cannot be enabled on attachments^[1].
• It can only be applied to the root prim (which will make the entire object VolumeDetect).
• It only detects physical objects and avatars.
• When moving via llSetPos() by a loop of stages, collision events will not trigger.
• Attachments will not register collision events when the avatar collides with a VolumeDetect object.

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default
{
    state_entry()
    {
        llVolumeDetect(TRUE); // Starts llVolumeDetect
    }
    collision_start(integer total_number)
    {
        llSay(0, "Detected!"); // Tells you when something penetrates the prim
    }
}

Events

Functions

Issues

SVC-2996

[c]

llDetectedLinkNumber returns 0 with llVolumeDetect(TRUE)

Footnotes