How do I calculate ?

My game character is running,jumping etc

Can I calculate run of the animation (total time) ?

(just run,not the author animation )

Click D :Character running ( X seconds )

Click w :Character waiting ( Y seconds )

Click D :Character running ( Z seconds)

How can I calculate X+Z ?

It's not necessary to sum theses values.

Use a variable to store the seconds

var timeSecondsRun

right arrow key pressed => add 1 to timeSecondsRun

every 1 seconds

Thank you RenatoB

Hi — It depends how accurate you want to get because the solution proposed by RenatoB would be simple to implement but will suffer from some rounding down problems. If, for example, you run for 1.9 second only the first second would have been registered. For more accuracy you could grab the exact time at the beginning and end of each run session and subtract one from the other to calculate duration and add this number to a variable that keeps a running total for you.