how to link two instantiates objects ?

[arthurh]

Hi,
i try to make a lot of ennemy with two parts : body and shield. i have 10 bodies and 10 shields. The shield doesn't collide with the body.
There is a way to link two instantiate objet by an ID or something like this ? because i want that the shied move with the body and i can use collision/overlaping for that.

thx

[Popcorn]

There is a very easy way to do this: Automatic pairing. Fusion automatically pair objects if there are an equal ammount of them.
Simply have this event:

* Always
- Shield: Set position to [x,x] from Body.

So if there are 10 shields and 10 bodies, each shield will find a body to be attached to.

Keep in mind though, that this only works on actions that affect all bodies. You cannot have conditions that limits the selection of Bodies and expect the automatic pairing to work. The body must contain all the information that the paired shield will need.

Another approach you can use, if the automatic pairing system does not suit your needs, is to use For Each loops. Always start a loop on the Body, and On ForEach Body, postion the Shield relative to the Body.

[schrodinger]

Yes, that can be easily achieved with the builtin "autojoin" feature of MMF
just create "body" and "shield" in the same event,
and create a condition:
always > set "shield" position at 0,0 from body


Or, if you plan to link more than two bodyparts/items,
if you don't create objects in runtime,
or if you want additional control over the process,
you could go with the much debated "always-foreach" combination
(as I do...)

Just assign each of your enemies an ID
(it can be done with "spread value" to an alterable value,
or you can setup a manual increment if again you want more control)
then give the shield the same ID related to its body and:

- always > count-for each "body" name "attach-shield"

- on each one of "body" loop name "attach-shield"
+ id of "shield" = id of "body" > set "shield" position at 0,0 from body

[schrodinger]

Whoops, I seem to often get there one minute later with the same responses

There is a very easy way to do this: Automatic pairing. Fusion automatically pair objects if there are an equal ammount of them.

Interesting though, I thought that auto-pairing was applicable just on creation of objects in the same event,
is this also applicable to pregenerated (not in runtime) items assuming they have equal quantities?
Or maybe I misunderstood?

[arthurh]

A great thanks for you Popcorn and schrodinger ! i test that !
Have a nice day

[arthurh]

So i try but with no result... it seem i am too stupid... ^^ i sent to you what i made. Could you see what i do wrong ?
Many thanks for four help !!!

[DaveC]

you're over complicating it, fusion handles this for you (in this instance)

[arthurh]

Hi Dave ! Thanks for your help. I made that in the first time. It worked. But now, with a lot of different ennemy (instantiate), i lost position, type of helmet or type of head when i make a for each loop... so i try to understand well with a very simple test how can i make a unique identifier for an active et how use it in a collision. I hope my explanation is understanding ^^ tell me if not !

[arthurh]

so ok. This is what i find with the fixed value : 2 loops for each for the 2 shields. Here is the mfa.

[Popcorn]

@schrodinger: Yes, it doesn't matter when the objects are created. As long as there are an equal ammount of both it works.