Condition from RBD packed position

[bobbybob]

Is it possible to control the activation parameter of a POP Drag, based on the position of a RBD Packed object?

I am trying to activate a POP Drag, when a RBD Packed object is under a specific Y position.

 

[3dome]

don't know if that parameter takes an expression, feel free to try, but you can always tick on use VEXpression and do things like airresist *= @P.y < some-value;

[bobbybob]

@3dome, Is the "*" a way to reference all points? Because it's a RBD Packed, there could be more then one object?

 

In a pop wrangle it would look like this

Quote

if (@P.y < -5)
    i@activationState = 1;
else
    i@activationState = 0;

Because it iterates over all the object, we could just reference the object we need to look at. But in the pop drags parameter, there is no way to know what object we are referring to... Is there a way to use something like the "point" vex function, to tell it to look at the position of "object 1"?

Maybe I just don't understand the "*= @P.y" expression, can you elaborate?

Edited November 23, 2018 by bobbybob

[3dome]

sorry for the confusion caused by my lazy coding style

airresist *= @P.y < some-value;  is actually the same as

if(@P.y < some-value)
{
	airresist = airresist * 1; //keeping airresist at whatever level it's set
}
else
{
  	airresist = airresist * 0; //turning it off as (something * 0) = 0
}

x *= y is just short for x = x * y, it has nothing to do with objects. Pop drag will act on all objects unless you set a group or play with the VEXpression

[bobbybob]

@3dome, Ahh of course, the pop drag is instanced on every object. I thought it as a global value.

Thank you so much, hurray for vex