var image_names1 = getwords('condition1.txt');
var image_names2 = getwords('condition2.txt');
var mask_names = getwords('masks.txt');

var stimuli = image_names1.concat(image_names2); // Make one array with stimuli
stimuli = shuffle(stimuli); // Randomize the order

var i;

for (i = 0; i < stimuli.length; i++) {
    preload(stimuli[i]); // Get the images from the server to the subject's browser
}


for (i = 0; i < mask_names.length; i++) {
    preload(mask_names[i]); // ... and the masks as well
}

image.await("preloading_completed"); // Wait for all images to be ready to go

text("For each trial, press the spacebar as soon as you recognize the image.");
await(4000);
text("Each image is follow by a random mask. Don't press space on just seeing the mask.");
await(4000);
text("Only press when you have clearly recognized the image and can describe it.");
await(4000);
text("Now, get ready for the first image.");
await(4000);
text("");
await(1000);

var s; // Stimulus counter
for (s = 0; s < stimuli.length; s++) { // Run through all stimuli
    waitfor { // waitfor ... or ... is not standard JavaScript (it is Stratified JS)
        for (i = 1; i < 20; i++) { // Show repeatedly at longer intervals
            setimage(stimuli[s]);
            await(16.66 * i);
            if (image_names1.includes(stimuli[s])) {    // We are in condition 1
                setimage(mask_names[0]);
            } else {                                    // We are in condition 2
                if (mask_names.length === 1) {          // There is only one mask
                    setimage(mask_names[0]);            // ... so use that
                } else {
                    setimage(mask_names[1]);            // Else, use the other mask
                }
            }
            await(500);
            clear();
            await(1500);
        }
    } or {
        awaitkey(" ");      // Waiting for the spacebar
        log(i,"threshold_" + stimuli[s]);
        clear();
    }
    
    input("What did you see?","description_" + stimuli[s]);
    

    clear();
    await(1000);
    
    if (s === stimuli.length-1) { // last trial
        break; // Skips the following fragment and breaks out of the for-loop
    } else {
        if (s < 2) { // For the first few, repeat the instructions
            text("Now we will repeat the procedure with a different image");
            await(3000);
            text("Again: Press the spacebar as soon as you recognize the image.");
            await(4000);
        } else { // Then, simplify the instruction
            text("Get ready for the next image");
            await(3000);
            text("");
            await(1000);
        }
    }
}


text("");
await(2000);
text("Thank you for participating!");
await(3000);