Collisions Between Circles

Questions
1

I have 2 Circle Bodies and I am trying to detect a collision between them, however it always detects a collision. Does anyone know why this would be?

Here is my code:

  function setup()


   end

  function draw()


   local circle = physics.body(CIRCLE, 50)
    -- enable smooth motion
   circle.interpolate = true
   circle.x = 100
   circle.y = 200
   circle.restitution = 0.25
   circle.sleepingAllowed = false

  local circle1 = physics.body(CIRCLE, 50)
   -- enable smooth motion
   circle1.interpolate = true
   circle1.x = 800
   circle1.y = 900
   circle1.restitution = 0.25
   circle1.sleepingAllowed = false


  end



 function collide(contact)

      if contact.state == BEGAN then 
        print("hit")
    end
 end
2 

supportedOrientations(PORTRAIT_ANY)

function setup()
    circle = physics.body(CIRCLE, 50)
    -- enable smooth motion
    circle.interpolate = true
    circle.x = 300
    circle.y = 100
    circle.sleepingAllowed = false
    circle.type=STATIC

    circle1 = physics.body(CIRCLE, 50)
    -- enable smooth motion
    circle1.interpolate = true
    circle1.x = 300
    circle1.y = 900
    circle1.restitution = 0.8
    circle1.sleepingAllowed = false
end

function draw()
    background(40,40,50)
    fill(255)
    ellipse(circle.x,circle.y,100)
    ellipse(circle1.x,circle1.y,100)
  end

 function collide(contact)
    if contact.state == BEGAN then 
        print("hit")
    end
 end
3

@austinmccoy Not sure, but maybe it’s because you created the bodies in the draw function, creating them 60 times per second. This would cause a LOT of bodies to be in the same place, ‘colliding’. It should be fixed if you create the bodies in the setup function. Also, if you are wondering why they are not visible, you need to create ellipses and draw them with the position of the physics bodies. I’ll get back to you with some code.
EDIT : I see @dave1707 beat me to it. Simultaneous posts!

4

@austinmccoy by putting the object definition in the draw, you create new ones at the same position every 16ms, so they hit each other!
Also dont make them local, or they will get quickly destroyed

5

Thanks for the tips!