How get static behaviour with dynamic physics?

Getting Started Newbie Questions
#1

Hi!
I have a hero that is shaped like a ballon (a ball-shaped top and a smaller basket in the bottom). The hero moves up by touching the device due to ‘hero.vy = -0.8’ and moves down by gravity.

If I just give the hero physics without any parameters (=rectangle shape) the ballon moves up and down like I want it. But if I give the hero a balloon shape, the hero starts rotating when I touch the screen, which I don’t want.

So, in other words:

-- 1. My hero moves up and down without rotating, but with a bad shape:  
physics.addBody(hero)   
  
-- 2. My hero has the perfect shape, but starts rotating when moved up and down.   
pentagonShape = { 16.1458320617676, -0.124998092651367 , 3.95833206176758, 25.2916666716337 , -2.50000095367432, 26.2291666269302 , -16.9791666865349, -4.08333206176758 , -15.4166667461395, -15.6458320617676 , -7.70833396911621, -24.4999961853027 , 5.625, -25.2291641235352 , 18.0208320617676, -14.5 }  
physics.addBody(copter, {shape=pentagonShape})

How can I combine these two so I get my wanted result?

Best regards,
joelwe [import]uid: 54640 topic_id: 9793 reply_id: 309793[/import]

#2

I believe that adding “yourSprite.isFixedRotation = true” after adding the physics body in your second code should do what you’re asking. It basically nullifies rotation when you’re applying a force off-center. This doesn’t prevent rotation when colliding with an object though. [import]uid: 51516 topic_id: 9793 reply_id: 35685[/import]

#3

Cheers Seth, once again! :smiley:
Well, it doesn’t matter afterwards because it explodes on collision :wink: [import]uid: 54640 topic_id: 9793 reply_id: 35708[/import]