Physics/Touch Issue tearing my emotions apart.

Questions
1 
-- PhysicsProj

-- Use this function to perform your initial setup
function setup()
    w1 = physics.body(EDGE, vec2(0,0), vec2(WIDTH, 0))
    w2 = physics.body(EDGE, vec2(0,0), vec2(0, WIDTH))
    w3 = physics.body(EDGE, vec2(WIDTH, 0), vec2(WIDTH, HEIGHT))
    garbagey = 40
    linedestroy = true
    onlyonce = true
    balls={}
    balls= CreateBall()
    
end

function CreateBall()
    local p = physics.body(CIRCLE,50)
    p.restitution = .8
    p.linearVelocity = vec2(math.random(100,400), math.random(100,400))
    p.x = math.random(60,250)
    p.y = math.random(400,600)
    p.color = color(math.random(0,255), math.random(0,255), math.random(0,255),100)
    return p
    end

   
    function touched(t)
        if t.state == BEGAN and not tw then
            if CurrentTouch.x < otherx1 and CurrentTouch.x > otherx2 then
                print("Success!")
                gingerx = CurrentTouch.x
                gingery = CurrentTouch.y
                
            else
                if CurrentTouch.x > otherx1 or CurrentTouch.x < otherx2 then
                print("Error!")
                ellipse(balls.x, balls.y, 200)
                end
                end
                    end
        
end

function draw()
    background(220)
    -- This sets a dark background color    
            
            fill(255,255,0)
            fill (balls.color)
            otherx1 = balls.x + 45
            otherx2 = balls.x - 45
            
            if CurrentTouch.x > otherx1 or CurrentTouch.x < otherx2 then
                print("Test.")
                end
             if CurrentTouch.x < otherx1 or CurrentTouch.x > otherx2 then
                balls.x = CurrentTouch.x
                balls.y = CurrentTouch.y
                ellipse(balls.x, balls.y, 100)  
                end
            
            strokeWidth(5)
            
                    
        

    

    
end

This is one of my feeble attempts to use a physics object. Literally, the ONLY thing I am trying to achieve, is that when you touch the ball, it moves where you drag it. If you don’t touch in the premise of it, it won’t move. That’s it. I am scared I am so bad at this.
godhelpusall

In serious terms, I dunno. I can’t get the physics object to not use gravity without doing balls.x/y = CurrentTouch.x/y in draw, but that breaks EVERYTHING! The only reason I use physics instead of a normal ol’ ball is so I can use collision/overlapping detection, which I intend to use later on. Help, please?

2

@Treshure I modified your code just to show you how to do the touch. I’m not sure what else you want to do. I set up 2 balls.


-- PhysicsProj

function setup()
    hold=0
    w1 = physics.body(EDGE, vec2(0,0), vec2(WIDTH, 0))
    w2 = physics.body(EDGE, vec2(0,0), vec2(0, WIDTH))
    w3 = physics.body(EDGE, vec2(WIDTH, 0), vec2(WIDTH, HEIGHT))
    garbagey = 40
    linedestroy = true
    onlyonce = true
    balls={}
    table.insert(balls,CreateBall())  
    table.insert(balls,CreateBall())  
end

function CreateBall()
    local p = physics.body(CIRCLE,50)
    p.restitution = .8
    p.linearVelocity = vec2(math.random(100,400), math.random(100,400))
    p.x = math.random(60,250)
    p.y = math.random(400,600)
    return p
end

function touched(t)
    if t.state == BEGAN or t.state==MOVING then
        for a,b in pairs(balls) do
            v1=vec2(t.x,t.y)
            d1=v1:dist(vec2(b.x,b.y))
            if d1<50 then          
                b.x=t.x
                b.y=t.y
                b.linearVelocity=vec2(0,0)
                hold=a
            end
        end
    end
    if t.state==ENDED and hold>0 then
        balls[hold].type=STATIC 
        hold=0
    end
end

function draw()
    background(220)
    fill(255, 0, 0, 255)
    for a,b in pairs(balls) do
        ellipse(b.x,b.y,100)
    end
end
3

My main goal is to have them as physics objects but not move. How can I have it so that when I let it go, it stays in place, BUT if I touch away from it, it doesn’t move? Thanks.

4

@Treshure I modified the above code. Try that.

5

That works great! Thanks!
(I’ll have to study on how you exactly pulled that off… for statement and pairs, precisely.)