How can i do "this" (hard to explain)

JlmC

"an image is worth a thousand words"

http://likeimg.com/images/box.png

If my helicopter is flying, i want my BOX to go on that way like i show in the picture.

What i got is the second draw. I need the third.

thanks

UtopianGames

Do you also want it to arch as in fall down or just go straight at that angle?

Darren.

JlmC

I want to arch it. But going straight it's also good.

forklift

I think you're asking 1 of 2 things:

1. How do I rotate the box when the helicopter moves.

2. When I drop the box, i want it to have the same forward momentum of flight before the drop.

Which one?

JlmC

second one

msones

Try interpolating the X-velocity of the box from the X-velocity of the helicopter to 0 while you accelerate in the Y-direction (due to gravity). You'll need an attribute to record the velocity of the helicopter so that the box can reference it.

Attribute: Helicopter Velocity
Helicopter rule: Constrain attribute "Helicopter Velocity" to self.motion.linearvelocity.x
Box rule: When swiped,
Change attribute self.motion.linearvelocity.x to helicopter velocity
Interpolate self.motion.linearvelocity.x to 0 over 4 seconds
Accelerate down (I used speed 200 and it worked fine)

forklift

I would store the helicopter's momentum (or linearVelocityX) as a game.attribute and upon releasing the box, the box's motion.linearvelocityX becomes the game.attribute.

Rule on the box:
When game.boxreleased = true
change attribute (self.linearVelocityX) to game.HelicopterMomentum.

Be sure if you want the box to slow its forward momentum to add a drag value in its physics attributes, otherwise it won't slow down.