Revised to not flcker.
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output file
<data>
/ columns = (date, time, subject, group, blockcode, blocknum, trialcode,trialNum,latency, script.elapsedTime, response, values.trial_type,values.stimuli_x, values.stimuli_y, values.stimulus_direction,values.avatar_x, values.avatar_direction,values.berries_collected,
values.berry_x, values.berry_y
//values.berry2_x, values.berry2_y
)
</data>
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<defaults>
/ canvasaspectratio = (4,3)
/ minimumversion = "6.5.2.0"
/ fontstyle = ("Hei", 3%, false, false, false, false, 5, 1)
/ txbgcolor = white
/ txcolor = black
/ screencolor = white
</defaults>
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<block RunExp>
/ onBlockBegin = {
values.berries_collected = 0;
}
/ trials = [1-9=InitialTrial;]
</block>
<values>
/ trial_type = 1 // 1 = predator. 2 = neutral
/ avatar_x = 5 //50%
/ avatar_step = 1
/ stimuli_x = 5 //50%
/ stimuli_step = 0
/ stimuli_y = 1 //10%
/ stimuli_speed = 2
/ avatar_direction = 0 // -1 = left, 1 = right
/ stimulus_direction = 0
/ random_direction_probability = 50
// berries
/ num_berries = 3 // randomized each block
/ berry_x = 1
/ berry_y = 1
/ berry1_speed = 1
/ berry2_x = 1
/ berry2_y = 1
/ berry2_speed = 1
/ berry3_x = 1
/ berry3_y = 1
/ berry3_speed = 1
/ berries_collected = 0
/ frame_counter = 0
</values>
<expressions>
/ berry_start_y = parameters.berry_radius
/ berry_end_y = 100 - parameters.berry_radius
</expressions>
<parameters>
/ berry_radius = 4
/ totalfallduration = 2000
/ berrystepduration = 500
</parameters>
<list avatar_xposition>
/ items = (0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%)
</list>
<list stimuli_xposition>
/ items = (0%,10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%)
</list>
<list stimuli_yposition>
/ items = (
0%,2.5%,5%,7.5%,10%,12.5%,15%,17.5%,20%,22.5%,25%,27.5%,30%,32.5%,35%,37.5%,40%,42.5%,45%,47.5%,
50%,52.5%,55%,57.5%,60%,62.5%,65%,67.5%,70%,72.5%,75%,77.5%,80%,82.5%,85%,87.5%,90%,92.5%,95%,97.5%)
</list>
<list berry_xposition>
/ items = (0%,10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%)
</list>
<list berry_yposition>
/ items = (
0%,2.5%,5%,7.5%,10%,12.5%,15%,17.5%,20%,22.5%,25%,27.5%,30%,32.5%,35%,37.5%,40%,42.5%,45%,47.5%,
50%,52.5%,55%,57.5%,60%,62.5%,65%,67.5%,70%,72.5%,75%,77.5%,80%,82.5%,85%,87.5%,90%,92.5%,95%,97.5%)
</list>
<list trial_type>
/ items = (0,1)
/ itemProbabilities = (0.6,0.4)
/ poolSize = 100 // HOW MANY TRIALS ?
</list>
// set up all pictures for types of trials
<picture avatar>
/ items = ("Beaver.png")
/ position = (list.avatar_xposition.item(values.avatar_x), 93%)
/ size = (5%,5%)
/ erase = false
</picture>
<picture berry_tree>
/ items = ("Berry_Tree.png")
/ position = (50%, 10%)
/ size = (100%,50%)
/ erase = false
</picture>
<picture berry>
/ items = ("berry.png")
/ position = (list.berry_xposition.item(values.berry_x), list.berry_yposition.item(values.berry_y))
/ size = (4%, 4%)
/ animation = path(50, 1,
list.berry_xposition.item(values.berry_x), list.berry_yposition.item(values.berry_y),
list.berry_xposition.item(values.berry_x), list.berry_yposition.item(values.berry_y + values.berry1_speed))
/ erase = false
</picture>
<picture berry2>
/ items = ("berry.png")
/ position = (list.berry_xposition.item(values.berry2_x), list.berry_yposition.item(values.berry2_y))
/ size = (4%, 4%)
/ erase = false
</picture>
<picture berry3>
/ items = ("berry.png")
/ position = (list.berry_xposition.item(values.berry3_x), list.berry_yposition.item(values.berry3_y))
/ size = (4%, 4%)
/ erase = false
</picture>
<text total_score>
/ items = ("Berries collected: <% values.berries_collected %>")
/ position = (10%, 10%)
/ txcolor = black
/ erase = false
</text>
<picture stimuli>
/ items = (
"threat.png",
"neutral_char.png")
/ position = (list.stimuli_xposition.item(values.stimuli_x), list.stimuli_yposition.item(values.stimuli_y))
/ size = (5%,5%)
/ select = values.trial_type
/ erase = false
// animation = path(50, 1,
// list.stimuli_xposition.item(values.stimuli_x), list.stimuli_yposition.item(values.stimuli_y),
// list.stimuli_xposition.item(values.stimuli_x + values.stimuli_step), list.stimuli_yposition.item(values.stimuli_y + values.stimuli_speed))
</picture>
<list signal_duration>
/ items = (2000, 3000, 4000)
/ selectionmode = random
</list>
<text signal_message>
/ items = ("Predator approaching!","Character arriving!")
/ fontStyle = ("Hei", 4%, false, false, false, false, 5, 0)
/ position = (50%, 50%)
/ txcolor = black
/ select = values.trial_type
/ erase = false
</text>
<trial InitialTrial>
/ timeout = 1000
/ onTrialBegin = {
values.num_berries = round(rand(1, 3));
values.avatar_x = round(rand(0,8));
values.avatar_direction = 0;
values.trial_type = list.trial_type.nextValue; // 0 = predator, 1 = neutral
values.stimuli_x = round(rand(0,8));
values.stimuli_y = 1; // TODO: set the value of where the y position is for predator (distal or near post-encounter)
values.stimuli_speed = 3; // TODO change speed ?
values.berry_x = round(rand(1, 8));
values.berry_y = 1;
values.berry1_speed = 1; // TODO possibly make it faster later
}
/ stimulusFrames = [1=clearScreen] // clear the screen while you're at it
/ branch = {
return trial.Signal;
}
/ validresponse = ()
/ inputdevice = keyboard
/ responseinterrupt = no // "no" is not a setting that exists
</trial>
<text debug_trial_type>
/ items = ("Trial type: <% values.trial_type %>")
/ position = (10%, 10%)
/ fontstyle = ("Arial", 2%, false, false, false, false, 5, 1)
/ erase = false
</text>
<trial Signal>
/ onTrialBegin = {
//picture.stimuli.erase = true; // NOT NEEDED
//picture.avatar.erase = true; //NOT NEEDED
}
/ stimulustimes = [0 = clearScreen, signal_message]
/ timeout = 2000 // MAKE IT A DISTRIBUTION
/ branch = {
return trial.Play;
}
/ validresponse = ()
/ inputdevice = keyboard
/ responseinterrupt = no // "no" is not a setting that exists
</trial>
<text debug_y>
/ items = ("Stimuli Y: <% values.stimuli_y %>")
/ position = (10%, 5%)
/ fontstyle = ("Arial", 2%, false, false, false, false, 5, 1)
/ erase = false
</text>
<trial Play> // name it post_encounter?
/ timeout = 500 // TODO: randomize how long the trial lasts
/ onTrialBegin = {
values.avatar_direction = 0;
values.stimulus_direction = 0;
values.frame_counter += 1;
values.stimuli_step = 0;
}
/ stimulusFrames = [1=clearScreen,avatar,stimuli,total_score,berry;] // Clearing the screen is the first order of business
/ validresponse = (2,3)
/ inputdevice = keyboard
/ responseInterrupt = immediate
/ onTrialEnd = {
// RECODE USING EXPRESSIONS . make an expression so that avatar_x_new is calculated, and the trial starts with that instead.
// recode with old location, current_loc, new_loc ?
// move avatar
if (trial.Play.response == 2 && values.avatar_x > 0) {
values.avatar_x -= 1;
values.avatar_direction = -1;
//picture.avatar.erase = true; // NOT NEEDED
} else if (trial.Play.response == 3 && values.avatar_x < 9) {
values.avatar_x += 1;
values.avatar_direction = 1;
//picture.avatar.erase = true; // NOT NEEDED
}
if (trial.Play.response != 0 || values.frame_counter % 5 == 0) { // only if response is made or if counter is even
if (values.trial_type == 0) { // predator moves towards avatar
if (values.stimuli_x < values.avatar_x && values.stimuli_x < 9) {
values.stimuli_step=1;
} else if (values.stimuli_x > values.avatar_x && values.stimuli_x > 0) {
values.stimuli_step=-1;
} values.stimuli_x += values.stimuli_step;
} else if (values.trial_type == 1) { // neutral character moves randomly
if (round(rand(1, 2)) == 1 && values.stimuli_x > 0) {
values.stimuli_step=-1;
} else if (values.stimuli_x < 9) {
values.stimuli_step=1;
}
values.stimuli_x += values.stimuli_step;
}
}
if (trial.Play.response == 0){ // to help stop flickering ?
//picture.avatar.erase = false; // NOT NEEDED
//picture.stimuli.erase = false; <--- HELP
}
// predator/character move downward
if (values.stimuli_y + values.stimuli_speed < 39) {
if (trial.Play.response != 0 || values.frame_counter % 5 == 0) {
values.stimuli_y += values.stimuli_speed;
//picture.stimuli.erase = true; // NOT NEEDED
}
} else { // stimulus reached bottom
values.stimuli_y = 39;
// if (values.trial_type == 0 && values.stimuli_x == values.avatar_x)
// TODO: Set color for predator if caught, grey if neutral
}
// falling berry
if (values.berry_y + values.berry1_speed < 39) {
values.berry_y += values.berry1_speed;
} else { // if berry reaches bottom of screen
if (values.berry_x == values.avatar_x){ // if berry is right above avatar
values.berries_collected += 1;
}
values.berry_y = 0; // either reset to top or later change to multiple berries
values.berry_x = round(rand(1, 9));
}
}
/ branch = {
if (values.stimuli_y == 39) {return trial.Indication;}
else return trial.Play;
}
</trial>
<trial Indication>
/ timeout = 3000
/ stimulusTimes = [100 = indication;]
</trial>
<text indication>
/ items = ("Indication period. Character will freeze or change color.")
</text>
// what does indication period look like
// how do characters change color?