Octicka is a simplified version of the Opticka experiment manager for Octave. The reason to make this fork is that Octave does not support some of MATLAB's classdef features that Opticka's OOP style depends on. The general idea is to move classes across from octicka, replace the features until they work. Not using the GUI should mean we can simplify some things. This should still work with MATLAB of course.
The major issue was with the stimulus classes that depend on dynamic properties with get and set methods. For dynamicprops the solution was to use a regular struct (stim.dp) and some modifications using subsref & subsasgn so that they can find either the source (e.g. size) or the temporary (e.g. sizeOut) property used at runtime (and run a pseudo get/set method).
Most core classes are working, and we are currently using octicka with the Raspberry Pi 4 to run touchscreen based experiments (try the TouchTraining tool, which uses 20 steps to refine touch behaviour). The classes are easy-to-use compared to plain PTB:
s = screenManager; % instantiate a screen manager object
s.distance = 65; % distance of the subject in cm
s.blend = true; % turn on OpenGL blending
ms = movieStimulus; % instatiate a movie stimulus object
ms.size = 14; % rescale it to 14° visual angle
ms.angle = 45; % rotate by 45°
ts = touchManager; % instantiate a touch manager object
ts.isDummy = true; % no need for a real touch screen, use mouse as dummy touch event
ts.window.radius = 8; % 8° radius of the touch window
ts.window.init = 5; % subject must touch within 5 seconds
open(s); % open the screen
setup(ms, s) % we link the movie stimulus to the screen object
setup(ts, s); % link the touch and screen managers
isTouch = false;
flip(s);
WaitSecs(1);
while ~isTouch
draw(ms); % draw our movie frame
animate(ms); animate to prepare the next frame
[isTouch] = isHold(ts);
flip(s)
end
drawtextNow(s, 'Finished!');
WaitSecs(1);
reset(ms); reset(ts);
close(s);