I have a file that uses ODE45. The options and function call both reference seperate script (.m) files. I want to include them all into one large file. How do I do this? I want to include it all into a GUI without having to use any reference files.

options = odeset('Events',@takeoff_event2, 'RelTol', 1e-6);
%states are [x     v  ]
state0=     [0     1.2]; %initial condition
%integrate ode's 10
%ode=@(t,state) inrun2(t,state);

[ti,statei,tei,yei,iei]=ode45(@inrun2,tspan,state0,options);

And here are the seperate .m files

takeoff_event2.m

function [value,isterminal,direction] = takeoff_event2(t,state)
global xInrun xExtInrun ext
x=state(1);
%  xInrun(end)-2 is the actual xInrun end-- extra added in plot_inrun
xTo=xInrun(end)-ext; % xTo = x takeoff (m)
value(1)=x-xTo;
%xxTovalue=[x xTo value]
isterminal(1)=1;
direction(1)=1;
%pause
return

inrun2.m

function [ statedot ] = inrun2(t,state)
% ODEs for inrun acceleration
% state vector = [ x  v ]

global xInrun yInrun dydxInrun kurvature
global m CdA mu eta g
x=state(1); % x = horizantal coordinate
v=state(2);% v = velocity along path
dydx=interp1(xInrun,dydxInrun,x);% finding dydx for any value of x
k=interp1(xInrun,kurvature,x);% finding curvature for any value of x
theta=atan(dydx);% angle of slope at any value of x
statedot=[0 0]';% setting initial value of statedot
statedot(1)=v*cos(theta);
N=m*(g*cos(theta)+k*v*v);% normal force
statedot(2)=-g*sin(theta)-eta*v*v-mu*N*sign(v)/m; 
%txvstatedot=[t x v statedot']
%pause
end