How can I make an Object Un-Detectable through LUA

[ItzShiiFt]

Hi, I'm new to Lua and CoppeliaSim.

I am attempting to change an Objects 'Detectable' Special Property to false (unchecked) in Lua for a specific event. Having the Objects Detectable property change to true from false works with this line:
'sim.setObjectSpecialProperty(objectHandle, sim.objectspecialproperty_detectable)'

However, I can't seem to find a way to do it so it changes it from true to false. Does anybody know how to do this, only through Lua code not through the Interface. I know its a weird request.

Thanks.

[fferri]

Object special property value is a bit mask.

To set the detectable flag:

Code: Select all

local oldVal = sim.getObjectSpecialProperty(objectHandle)
sim.setObjectSpecialProperty(objectHandle, oldVal | sim.objectspecialproperty_detectable)

To clear the detectable flag:

Code: Select all

local oldVal = sim.getObjectSpecialProperty(objectHandle)
sim.setObjectSpecialProperty(objectHandle, oldVal & ~sim.objectspecialproperty_detectable)

Note:

& is bit-wise AND
| is bit-wise OR
~ is unary bit-wise NOT

See also: https://www.lua.org/manual/5.3/manual.html#3.4.2


Btw, you can use a value of 0 to indicate none of the bits set:

Code: Select all

sim.setObjectSpecialProperty(objectHandle, 0) -- remove all bits

[ItzShiiFt]

That worked, Thank you.