Collision detection trouble

Questions
1

Having some difficulty with collision detection… Not sure if it’s because how I set everything els up or what
Here is my code so far w/o collision detection added in… Tips?

function setup() 
    B={}
    score=0
    PipeFrequency=.5
    timer=0
    gap=200
    LaunchPipe()
    position=vec2(WIDTH/2,HEIGHT/4)
    ballr=50
    bally=HEIGHT/2
end

function LaunchPipe()
    b={}
    b.x=0
    b.y=0
    b.w=math.random(75,WIDTH-gap-75)
    b.h=50
    b.s=5
    b.c=color(35, 197, 85, 255)
    b.x2=b.w+gap
    b.w2=WIDTH
    table.insert(B,b)
end

function draw()
    background(75, 184, 196, 255)
    pushStyle()
    timer=timer+DeltaTime
    if timer>1/PipeFrequency then 
        LaunchPipe()
        timer=0
    end
    for i,b in pairs(B) do 
        b.y=b.y+b.s
        if b.y<-b.w then
            table.remove(B,i) 
        end
        fill(b.c)
        rect(b.x,b.y,b.w,b.h)
        rect(b.x2,b.y,b.w2,b.h)
        ellipse(position.x,bally,ballr)
        end
        moveVec = vec2(Gravity.x, HEIGHT/2) + vec2( 0, 0)
       
         position = position + moveVec * 20
end
2

What exactly is your question?

Try reading some of the stuff on the wiki, almost everything involves collisions

3

@ignatz, his/her trouble is that the ball doesn’t collide with things and go trough instead diying

4

@Mark.T Are you having trouble with actual collision code, or are you having trouble with where to start with collision detection. There’s 2 ways to do collision detection. One is using the physics engine, the other is by writing your own code to see if the x,y positions of objects are within a certain distance of each other. You don’t say which way you’re trying.

5

@TokOut - his problem is not that his ball isn’t colliding - that’s because he hasn’t put collision code in yet!

His problem is that he doesn’t know how to do collisions - and there is a lot of sample code about collisions, as well as tutorials.

I am simply saying - before you ask on the forum, try looking in the wiki, searching the forum for past answers, etc. You could use that advice, too.

6

Ok, collision will be my next lua-subject to learn