llPassTouches

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/LSL

PassTouches

llPassTouches

Summary

Function: llPassTouches( integer pass );

0.0	Forced Delay
10.0	Energy

Sets the pass-touches prim attribute.

• integer

pass

–

PASS_* flag

Whether Touches are passed to the root prim depends not only on which PASS_* flag is selected, but may also depend on if there is a script that in the prim that handles one of the touch events. For this reason most users will want to use PASS_ALWAYS or PASS_NEVER as they do not have this variable behavior.

The default value for this attribute is PASS_ALWAYS.

pass Constant	Value	touch Script	No touch Script	Description
PASS_IF_NOT_HANDLED	0	not passed	passed	Touches are passed if there is no script handling the event in the prim.
PASS_ALWAYS	1	passed	passed	Default: Touches are always passed to the root.
PASS_NEVER	2	not passed	not passed	Touches are never passed to the root.

Caveats

• Has no known effect if called from within the root prim.

Examples

See Also

Events

•	touch_start
•	touch
•	touch_end

Functions

•

llPassCollisions

Deep Notes

TRUE & FALSE vs. PASS_* flags

Prior to Server Version 1.40.2, pass was couched in terms of being a boolean and the only meaningful values were 0 and 1. The best practice at that time was to use the integer constants TRUE and FALSE. The design of this function left much to be desired. The problem was that while TRUE always caused all Touches to be passed along to the the root, FALSE would only not pass Touches if there the prim had a script that handled a touch event. This meant to fully utilize this function the prim must contain a script that handled touch events! With the release of Server Version 1.40.2, the PASS_* flags were introduced and the subtype of the pass was changed. Specifically the introduction of PASS_NEVER solved this problem, allowing content creators to eliminate scripts that were only in the object to tweak the passing of touch events.

History

• Introduction: ?
• Change: SVC-5923 - Server version 1.40.2 - New pass value added: 2

Signature
function void llPassTouches( integer pass );