How do I get 3 comets to launch at once?

Hello! I am doing a school project and looking to launch one enemy rocket as a timer begins, then I have to wait 60 secconds for the 3 defence missles to fire. I am struggling to create the loop for this, but I will post what I have! Thanks!

[Adam Danz]

You could try using linkprop to link the coordinates of the 3 rockets so you only have to change one of them (typically these data are stored in xdata and ydata properties). I don't know if that will improve the display lag or not.

[dpb]

Also check out

doc timer

as the clever way to wait and then start the intercept task(s) after the magic time has elapsed.

Answer 1

[Walter Roberson]

You cannot do that with comet() . Each call to comet() does not return until the display is finished.

You will need to use a different approach, such as using animatedline()

[Adam Danz]

Hmmm.... I just noticed that comet only references the first column of data when provided with a matrix of y-values (demo below). Looking under the hood, it doesn't look like it would take too much to adapt it to support multiple columns of data.

x = linspace(-pi,pi,180)'; 
y = sin([1,2,.5].*x);
figure()
hold on
plot(x,y(:,1), 'k--','LineWidth',1)
comet(x,y)