r = 20

Xmin = -r

Xmax = r

Ymin = -r

Ymax = r

​

traceG()

M = [0,0]

N = [0,0]

pasx = 0

pasy = 0

n = 0

k = 1

​

function deplacement(){

    n = n+1

    N[0] = M[0]

    N[1] = M[1]

    na = Math.random()

    if (na < 0.25){ pasx = -1; pasy = 0 }

    if (0.25 <= na && na < 0.5){ pasx = 1; pasy = 0 }

    if (0.5 <= na && na < 0.75){ pasx = 0; pasy = -1 }

    if (0.75 <= na && na <= 1){ pasx = 0; pasy = 1 }

    M[0] = M[0]+pasx

    M[1] = M[1]+pasy

    if(M[0]==0 && M[1]==0){k = k+1}

    document.getElementById("infos").innerHTML = "Passage(s) par l'origine : "+k+"<br>Nombre de déplacements :  "+n;

    segment(N,M)

}

​

setInterval(function (){deplacement()},50)

​