Really thanks Asmodean for the help, Here is a link to a capx that illustrates how to pick seperately two instances that are in collision done with your help :

https://www.dropbox.com/s/rg7bpuodhq6e1 ... .capx?dl=0

It's the same way to select instances with collision and overlapping, so I thought it was more interesting for me to put an example based on collision and physics for people to see how it works.

in this capx, 2 sprites have physics gravity on it, when there is a collision, one sprite will jump and the other one will see its width increase, download the project with the link you will understand, if questions post it.

Hello here is my problem :

I have 10 instances of the same sprite,

I want that when one instance is overlapping another instance, one of the two instances stop its movement.

But when I put the condition : when sprite is overlapping sprite -> stop the movement

The problem is that the two instances stop their movement whereas I want only one of the 2 to stop its movement.

So is there a way to get the UID of the two Overlapping objects and to do action separately with the two object ?

Thanks for the answers

Super, Thanks !

Note : you can move the red sprite with the arrow keys

here is the link to access the construct2 (capx) file I was talking about :

https://www.dropbox.com/s/vrqcehkejm5ix ... .capx?dl=0

Please tell me if you can't access it, hope it will help you

Super, I will post the link soon, thank you Saad Swad

Thank you Saad Swad for the help, I succeeded what I wanted to do thanks to you.

I did as you asked and add some stuff for fun :

Event : when character on collision with purple sprite =>Action : set opacity of purple sprite to 50, set "Collision" (instance variable of purple sprite) to 1.

Event : Every 1.0 seconds,"Collision"(instance variable of purple sprite)=1, Pick a random purple sprite instance => Action : Apply Physics Force (0,500) at image point 0.

Is there a way to join the project capx or images in the Forum, then this could help more other people ?

Hello, here is my problem,

I have a couple of purple sprite in my level

When I touch one of those purple sprite with my character their opacity become 50 (On collision-> set opacity to 50)

I would like to know how I could select randomly a purple sprite among those I have already touched

I know the event "Pick nth instance" but It pick a precise IID instance

I know also know the event "Pick random instance" but it allow me to pick one purple sprite among all instances, and I want to pick one among the purple sprites that I have already touched -> Is there a simple way to do that ?