How do I get a my script to show my display function 'You gained a point' when my ball hits the randomly placed board

figure;
AxesH = axes('NextPlot','add');
play = input('Welcome. Do you want to play? (yes or no): ','s');
if strcmp(play,'yes') || strcmp(play,'Yes')
b = input('Please input angle value: ');
[x,y] = HDTask1function_f(b);
z = rand()*3;
j = z+0.5;
hndl2=plot([z j],[0 0],'LineWidth',5);
hold on
set(gca,'Xlim',[0 4])
set(gca,'Ylim',[0 4])
hndl=plot(x(1),y(1),'r.','MarkerSize',50);
for ii=2:length(x)
    drawnow;
    set(hndl,'XData', x(ii), 'YData', y(ii));
    pause(0.025);   
    if y(ii:end) < 0
    y(ii:end) = 0;
    break
    if x(1,:) < (z+0.5)
        if x(1,:) > z
            disp('You gained a point')
        end
    end
    end
end
end

if strcmp(play,'no') || strcmp(play,'No')
    disp('I always thought you weren''t cool enough to play')
end
Function file:
function [x,y]=HDTask1function_f(a)
x0=0;
y0=1.8;
v0=4;
g=9.8;
t=0:0.01:5;
x=x0+v0*cos(a*(pi./180)).*t;
y=y0+v0*sin(a*(pi./180)).*t-(g.*t.^2)/2;
end

Answer 1

[Geoff Hayes]

Aaron - look closely at the code in your for loop

for ii=2:length(x)
    drawnow;
    set(hndl,'XData', x(ii), 'YData', y(ii));
    pause(0.025);   
    if y(ii:end) < 0
        y(ii:end) = 0;
        break
        if x(1,:) < (z+0.5)
            if x(1,:) > z
                disp('You gained a point')
            end
        end
    end
end

The break is called before the check on the x position (to see if the ball lands on the rectangle)....so we want to break after we do the check. Also, the x(1,:) is an array of elements so comparing them all against z+0.5 is (I think) not what you want. You probably just need to check the x(1,ii)) position and ensure that it is greater than z AND less than z+0.5. Try the following

    if y(ii) < 0
        y(ii) = 0;                        % <------ is this assignment necessary?
        if x(ii) < (z+0.5) &&  x(ii) > z
            disp('You gained a point')
        end
        break
    end