How do I do to execute an action only one time?

I want to do something like when a sprite changes his animation I set his HitPoints to 20, but only when changes, not when he is with that animation. My problem is that it sets the value to 20 all the time.

Hello DarthPapalo666,

I assume your code i somethink like: when sprite is playing AnimationXY -> set HP to 20. This is executed every tick. The simplest solution is to insert "Trigger once while true" as a second condition.

Be careful though, if you have multiple instances of sprite, with "System->Trigger once" it may not work as expected.

Thats true — I usually avoid trigger once. But i have got another idea.This one should be better and reliable:

kriand , What is "2"? Did you mean setting animation frame to 2? But this will skip frame 1.

DarthPapalo666

If your animation is not looping, you can make this event with 3 conditions, it will only be triggerred once:

Sprite On animation frame change

Sprite Animation frame =0

Sprite is animation "Name" playing

CurrentAnimation is an instance variable. The name may be a little confusing.