[Solved]Pinning with Physics

Here's a doooosey,

Is it possible to have two sprites with physics behaviors and bounding box collision pinned to each other. I did a simple test with two squares, added pin behavior and physics behaviors. Then did

System-On start of layout->Sprite1 Pin pin to Sprite2.

When I launch the preview, they both for a split second are together then bounce apart next to each other then fall at the same rate to the floor.

My mind is guessing to some how put in a condition where either the physics or the collision is disabled and then triggered on when needed but I could use a point in the correct direction on on just getting them to stick together lol.

I tried to check the Pin section of the manual but it was a little bare :)

I suggest you to read again the Basic physic tutorial especially the note about manual movement & other behaviors.

Pinning two physic objects to each other (knowing that they'll automaticly push out from each other) is to be considered as irrealistic behavior.

You should rather consider making a distance or revolute joint (Advanced physic tutorial).

With such sensible/experimental (the plugin is still to be considered beta) topic as physics I recommand to read both tutorials and the future manual entry (not written at the date of this post, but it should be a matter of days/weeks at this point) often to refresh one memory.

I think I have a work around, and a logical one at that. If I have both object's pinned, both having physics is pointless. So I removed physics from sprite2 and on sprite2 I just used Set position to sprite1.x and sprite1.y. Now I just have to find a way to trigger physics onto sprite2y when needed.

I created a group called together and set it active on start.

Pinned one sprite to the other and when they collide with trigger, group is disabled and reaction occurs.

What are you exactly trying to archive? I've been useing a similar technique within my Pinball Demo

Pilot in a plane, when plane falls below certain height on the screen, pilot bails out.

Just destroy the 'pilotInPlane' Sprite and spawn a new 'PilotOut' sprite with physics.

Game programming often requires some tricks (:

In the end that's what the player sees that matters.

Mmmm that's a good idea!