Understanding millis()

[glv]

Hello,

This is your related post:

Reaction time experiment

thank you! I realized that. Now I’m having a problem with having the calculation of the reaction time work. It should show the time that it takes for the user to press space since the square turned red. Could you help? boolean startTimer = false; int startingTimer; int CONSTANT = 1000; int r; int timeOne; int timeTwo; int totalTime; int reactionTime; boolean reaction; void setup() { // setting up the initial screen size(800, 800); textSize(36); text("Reaction time experiment", 180, 200…

@14mmss

if (m % 5 == 0)

Read this again:

Reaction time experiment

This condition may not ever be met because millis() is quietly updating in the background and you are only checking it every draw cycle which is 1/60 of a sec (default framerate is 60 fps). The chance that they are exactly == at the instance you check is not likely. Other options are >, <, >=, <=, != … Pick one that makes sense and try it. Reference: https://docs.oracle.com/javase/tutorial/java/nutsandbolts/op2.html

Use println() statements (outputs to console) in your code to see what the variables are doing:

println() / Reference

:)