How do I use hist3 with my code?

In this code, I'm plotting a lot of particles and I want to represent them visually in a hist3 plot. I don't know how to make it work, it keeps on plotting one particle only, I want to put all of them in the 9x9 hist3 plot.

 clear
 clc

 N = 30;
 M = 40;
 %--------------Cirkeln--------------
 radie = 50;
 x=0;
y=0;
theta=linspace(0,2*pi);
%-----------------------------------
x_t = zeros(M, N+1);
y_t = zeros(M, N+1);
tic
for n = 1:N
    for m = 1:M
        distance = inf;
        while distance > radie % So that they do not pass the circle.
            x_t(m, n+1) = x_t(m, n) + (-1).^randi(2);
            y_t(m, n+1) = y_t(m, n) + (-1).^randi(2);
            distance = hypot(x_t(m, n+1), y_t(m, n+1));
        end
    end

    plot(x_t(:, 1:n+1)', y_t(:, 1:n+1).','.', 'MarkerSize', 5);
    hold on
    plot(x+radie*cos(theta),y+radie*sin(theta));
    axis equal
    hold off
    drawnow
    hist3([x_t(m, n) y_t(m, n)],[9 9])
end
toc
grid on
%hist3([x_t(m,n+1) y_t(m,n+1)])