Hi, I have a question regarding collisions. If i have an ball image falling from the top of screen, and when it comes in contact with another image how do i make the score updated (score=score+1)?
Im not good wit collisions please help if you know 
Thanks!!!
With listeners. See http://docs.coronalabs.com/guide/physics/collisionDetection/index.htmlÂ
Basically, if you add a collision listener it is called when a collision occurs. It is a function (can be a method I suspect) that is called whenever two objects collide, and it tells you what they are.Â
So if you write:
function myCollisionListener(event)
and add it with:
Runtime:addEventListener("collision",myCollisionListener)
it will be called on a collision - you can add names to objects so you can tell what has it what, see the docs ref above, and when your ball hits your floor, you can increment a score.
With listeners. See http://docs.coronalabs.com/guide/physics/collisionDetection/index.htmlÂ
Basically, if you add a collision listener it is called when a collision occurs. It is a function (can be a method I suspect) that is called whenever two objects collide, and it tells you what they are.Â
So if you write:
function myCollisionListener(event)
and add it with:
Runtime:addEventListener("collision",myCollisionListener)
it will be called on a collision - you can add names to objects so you can tell what has it what, see the docs ref above, and when your ball hits your floor, you can increment a score.
I think what you are asking is how or when to update the score.
In your collision function you have phases.
local onCollison = function(event)
  if event.phase == “began” then
    score = score + 1
  end
end
or…
if event.phase == “ended” then
 score = score + 1
end
I think what you are asking is how or when to update the score.
In your collision function you have phases.
local onCollison = function(event)
  if event.phase == “began” then
    score = score + 1
  end
end
or…
if event.phase == “ended” then
 score = score + 1
end