How to end the transmission from particular nodes?

clc;

clear all

close all

global Nodes

global txrange

Nodes = 35;

txrange = 15;

global savedtransmission

global xn

global yn

xn = [6.75 48 8.25 50.625 30.37 4.75 7 2.25 14.75 8.25 13.225 15.25 27 20.15 40.5 30.375 48.25 42.5 45 45.25 45.25 53.25 57 51.25 34.5 27 50.15 58 15.25 4.75 12.75 45.5 1.25 57 33.75];

yn = [40.1 39.42 6.57 6.57 20.12 13.26 22.995 39.42 33.24 33.24 13.14 3.67 40.46 19.71 26.28 33.24 21.1 21.1 29.46 39.42 32.41 32.41 22.9 13.41 13.14 33.46 45.71 1.37 26.28 33.46 40.1 18.61 22.9 13.58 41.21];

%xt = [6.75 48 8.25 50.625];

%yt = [40.1 39.42 6.57 6.57];

distancematrix = zeros(Nodes,Nodes);

for i=1:Nodes;

for j=1:Nodes;

distance(i,j)= sqrt((xn(i)-xn(j))^2 + (yn(i)-yn(j))^2);

end

end

global condition

condition = (distance < txrange);

global testpoints

testpoint = 1;

global endnodes

endnodes = [2,3,6,7,17,19,27,29,31];

%testpoint1 = [xt(1),yt(1)];

%testpoint2 = [xt(2),yt(2)];

%tesrpoint3 = [xt(3),yt(3)];

%testpoint4 = [xt(4),yt(4)];

global reachednodes

reachednodes = zeros(1,Nodes);

figure(1)

plot(xn,yn,'*');

%text(xt(1),yt(1),'T1'); text(xt(2),yt(2),'T2'); text(xt(3),yt(3),'T3'); text(xt(4),yt(4),'T4');

text(xn(1),yn(1),'T1'); text(xn(2),yn(2),'T2'); text(xn(3),yn(3),'T3'); text(xn(4),yn(4),'T4'); text(xn(5),yn(5),'1'); text(xn(6),yn(6),'2'); text(xn(7),yn(7),'3'); text(xn(8),yn(8),'4'); text(xn(9),yn(9),'5'); text(xn(10),yn(10),'6');

text(xn(11),yn(11),'7'); text(xn(12),yn(12),'8'); text(xn(13),yn(13),'9'); text(xn(14),yn(14),'10'); text(xn(15),yn(15),'11'); text(xn(16),yn(16),'12'); text(xn(17),yn(17),'13'); text(xn(18),yn(18),'14'); text(xn(19),yn(19),'15'); text(xn(20),yn(20),'16');

text(xn(21),yn(21),'17'); text(xn(22),yn(22),'18'); text(xn(23),yn(23),'19'); text(xn(24),yn(24),'20'); text(xn(25),yn(25),'21'); text(xn(26),yn(26),'22'); text(xn(27),yn(27),'23'); text(xn(28),yn(28),'24'); text(xn(29),yn(29),'25'); text(xn(30),yn(30),'26');

text(xn(31),yn(31),'27'); text(xn(32),yn(32),'28'); text(xn(33),yn(33),'29'); text(xn(34),yn(34),'30'); text(xn(35),yn(35),'31');

reachednodes(testpoint)=1;

DFS(testpoint);

return;

%DFS

function [] = DFS(r)

global condition

global xn

global yn

global reachednodes

global floodProb

global savedtransmission

global endnodes

wait_time = 2000000000;

neighborNodes = find(condition(r, :) == 1);

neighborNodes = intersect(neighborNodes, find(reachednodes(:) == 0));

for k = 1:length(neighborNodes),

line([xn(r) xn(neighborNodes(k))], [yn(r) yn(neighborNodes(k))]);

end;

drawnow;

for k = 1:length(neighborNodes),

if (reachednodes(neighborNodes(k)) == 0),

reachednodes(neighborNodes(k)) = 1;

for i=1:wait_time j=i;

end

floodProb = 9 / length(neighborNodes);

p = 1;

if p <= floodProb,

% broadcast again;

DFS(neighborNodes(k));

for e = 1:length(endnodes);

floodProb(e) = 1 / length(neighborNodes);

end

end;

end;

end;

end

I am trying like this to end the transmission at endnodes, please anyone help me with this. the picture is displayed below.

above highlited are the methods I tried to terminate transmission.