circle at touch [Solved]

Questions
1

Hi. I’ve been making a game sorta thing, but I can’t seem to draw a circle where the touch.x and touch.y are. This is what I was using:

function touched(touch)
fill(255)
ellipse(touch.x,touch.y,100)
end

2

@Kolosso Here’s something to get you started.


function setup()
    x,y=0,0
end

function draw()
    background(40, 40, 50)
    fill(255)
    ellipse(x,y,90)
    text("drag your finger around the screen",WIDTH/2,HEIGHT/2)
end

function touched(t)
    if t.state==BEGAN or t.state==MOVING then
        x=t.x
        y=t.y
    end
end
3

Thanks. makes plenty of sense but, i kinda figured it out on my own before i read this

4

You could also do

function draw()
    background(255, 255, 255, 255)
    fill(0, 0, 0, 255)
    ellipse(CurrentTouch.x, CurrentTouch.y, 200)
    text("Touch the screen to move the ball!", WIDTH/2, HEIGHT-50)
end

But since CurrentTouch is barely used, dave’s code is probably better, mine is just shorter :stuck_out_tongue:

5

I think your own code does not work because the touch function is executed before draw function, whichs background() function simply clears your screen all over just after your circle is drawn.
Or not. That’s just how I’d explain the problem :slight_smile:

6

I think i get it now. thanks everyone. I’m kinda new to codea talk so how do i delete this discussion?

7

@Kolosso You don’t delete discussions, they stay forever unless a MOD removes them.

8

oh. I didn’t know that

9 
function draw()
      if CurrentTouch.state ~= ENDED then
      ellipse(CurrentTouch.x,CurrentTouch.y,100)
      end
end

How’s this?

EDIT: fixed formet