Tree = { x = 0, y = 0, r = 100 }

function Tree:create(o)
  o.parent = self
  return o
end

function Tree:collides(first, other)
  print(first.x, first.y, other.x, other.y)
  return math.sqrt((first.x - other.x)^2 + (first.y - other.y)^2) < (other.r + first.r)
end


function love.load()
  trees = {}
  nextNum = 0
  r = 100
  repeat 
    t = Tree:create({x=math.random(0, 500), y=math.random(0, 500), r=r})
    collides = false
    for j=0, nextNum-1 do
      if Tree:collides(t, trees[j]) then 
        collides = true
        break
      end
    end
    if not collides then 
      trees[nextNum] = t
      nextNum = nextNum + 1
    else
      r = r - math.random(0, 10)
    end

  until nextNum >= 20
end


function love.draw()
  love.graphics.setColor(1, 1, 1)
  for k, t in pairs(trees) do
    love.graphics.circle("line", t.x, t.y, t.r, 100)
  end
end