How do I tell an object to do something for X seconds?

[sodacrunch]

http://jsfiddle.net/sodacrunch/73c9W/1/

 

I wanted to know what the term/subject is called for telling an object to do something for X amount of seconds. For example, go left for one second and then down for 2 seconds and then right for 4 seconds, etc etc. Is it "delta time" ? Also, is my current setup correct or should I change it? I was using set interval before but switched to requestanimationframe. 

[Psychho]

Add this code to your update loop,

var newTime = Date.now();deltaTime = (newTime-lastTime)/1000;lastTime = newTime;

now for example if you changed 

if (rightDown) this.x += 5;

to

if (rightDown) this.x += 5*deltaTime;

the movement will then be time based and x will increment by 5 every second.

[sodacrunch]

thanks! I added var "lastTime = 0;" outside the loop

[narushevich]

http://jsfiddle.net/sodacrunch/73c9W/1/

 

I wanted to know what the term/subject is called for telling an object to do something for X amount of seconds. For example, go left for one second and then down for 2 seconds and then right for 4 seconds, etc etc. Is it "delta time" ? Also, is my current setup correct or should I change it? I was using set interval before but switched to requestanimationframe. 

I guess it's called the behavior.)