Reading recommendations

Questions
1

I’m beginning to mess around with OSC. I have no problems in implementing some basic stuff, but I’m eager to find out what there is to learn. Is there any code agnostic material I can read(or watch) to clue me into what might be possible and more importantly, what issues I’m going to face.

I can foresee I’ll need to learn how to handle multiple devices shouting at each other.

2

@bitmage I might have some osc code, but I don’t have time right now to create some examples for you. Maybe in a few hours when I get back.

3

I appreciate it very much. Once I realized how easy it is to use I immediately knew I’d end up painting myself into a corner.

Looking forward to your post, thanks again.

4

@bitmage Here it is. I don’t like it, but it seems to work. I need to look at this more to understand what’s really happening. I don’t like the way the 2 devices try to connect to each other. I need to create a better way.

It’s kind of hard writing code on 2 devices at the same time and keeping the code in sync.

Run this on both devices and drag your finger to move the circle on the other device.

viewer.mode=STANDARD

function setup()
    --65491 max bytes to send
    ip=1
    msg=""
    myIp = osc.start()  -- address of this ipad
    if myIp==nil then
        msg="iPad is offline"
    else
        -- seperate my ip into ip1=xxx.xxx.xxx.   ip2=xxx
        ip1,ip2=string.match(myIp,"(%d+.%d+.%d+.)(%d+)")
        print("My ip "..myIp)
        getTheirIp=true
    end
    sx,sy=0,0

end

function draw()
    background(0)
    fill(255)    
    showText()
    if getTheirIp then
        getOtherIp()
    end
    ellipse(sx,sy,80)
end

function touched(t)
    if t.state==CHANGED and not getTheirIp then
        osc.host=otherIp
        sendMsg("screenXY",t.x,t.y)
    end
end

function getOtherIp()
    if ip~=tonumber(ip2) then   -- send message to other devices except myself
        local temp=string.format("%s%s",ip1,ip)
        osc.host=temp
        msg="Looking for other devices IP   "..temp
        sendMsg("otherIp",myIp) 
    end 
    ip=ip+1 
    if ip>255 then
        getTheirIp=false
        msg="Other device is offline or not running, try restarting it"
    end
end

function showText()
    text(msg,WIDTH/2,HEIGHT/2)
end

function sendMsg(id,...)
    osc.send(id,...)        
end

function osc.listen(id,...)     -- received messages
    arg={...}
    
    if id=="screenXY" then  -- get screen x,y values from other device
        sx=arg[1]
        sy=arg[2]
    end

    if id=="gotIp" then
        otherIp=arg[1]
        getTheirIp=false
        msg="Move your finger on the screen"
        print("other ip",otherIp)
    end
    
    if id=="otherIp" then
        getTheirIp=false    -- got their ip, dont need keep trying
        otherIp=arg[1] -- ip address of other device
        print("Their ip",otherIp) 
        osc.host=otherIp
        sendMsg("gotIp",myIp)
        msg="Move your finger on the screen"
    end
end