Rotating a image

SANDEEP410

I have a wheel which needs to be rotated when ball hits it. Wheel should only rotate around its centre and should not move to and fro.
How to make it rotate, i tried checking and unchecking but fixed rotation option but no use.
Also how can i use precise collision.Currenly my ball collides on the rectangle image.I want to just collide with the rms of wheels

MotherHoose

gameAttribute: boolean … name: wheelRotate
if you want to keep actors' behaviors locked:
…add two more: wheelX and wheelY … index type

on wheelActor:
Rule: when
Event: overlaps or collides with ball
--Rule: when
--Attribute: game.wheelRotate is true
---Rotate behavior
Otherwise: changeAttribute: self.rotation To: 0

on ballActor
Rule: when
Event: overlaps or collides with wheel
--Rule: when
--Attribute: self.Position.X ≤ magnitude( game.wheelX - self.Position.X , game.wheelY - self.Position.Y )
--changeAttribute: game.wheelRotate To: true
Otherwise: changeAttribute: game.wheelRotate To: false

both have Collision Shape: Circle
==
yuck! sometimes the explanation is more complicated than actually doing!

demo: http://www.mediafire.com/?5rf2ubb9fhooeb2

MH

MarkOnTheIron

If you want it to not move then uncheck the movable option in the wheel actor. There you will also find a drop down menu with the collision types, choose circle.

To have it to rotate during collisions let the fixed rotation option unchecked. If you want the wheel to have a specific rotation you could add a rotate behavior to a collision rule.

SANDEEP410

using the circle option also doesnt use precise collision
I cretaed a rule to rotate if it collides with ball.But it doesnt rotate