How to get a mechanim animation state change to work?

🌵 Needle Engine
1

Hi,
I am simply trying to get an animation state to change via mechanim, and I cannot get it to work. I can access the animator component, and toggle its enabled/disabled state, but when I use “setTrigger”, it doesn’t trigger the mechanim state to change.

I have a character that is Idle. There is a trigger condition “Walk” setup on the transition from Idle->Walk, but it never changes when called from my script. Am I doing something stupid? Calling “.play(“Walk”)” works, but setting the trigger does not.

`import { Animator, Behaviour, serializable, serializeObject, GameObject } from “@needle-tools/engine”;
import { Object3D } from “three”;

export class AnimatorExample extends Behaviour {

@serializable(Animator)
public personAnimator?: Animator;

start()
{
        if (this.personAnimator) {
        this.personAnimator.setTrigger("Walk");
        }

}

}`

Original Post on Discord

by user 259070246382469121

2

Hey :wave: Are you sure that the trigger name isn’t walk or Walk (with an extra space at the end)?

3

Since if play() works correctly, then indeed the only problem would be with the conditions.

Can you screenshot the transition?

4

Hey @kipash :cactus: Thank you for your response. Im not sure what the issue was. I checked spelling and all was correct. I deleted the animator controller and re-made it and it was fine then.

I have since modified the script and am now facing an error when trying to run .setTrigger() on multiple animators in an array. Can you please advise on why I get the error “.setTrigger is not a function”. In Unity, I have an array with 6 animators assigned. Is it something to do with how I am initially declaring the array?

`import { Animator, Behaviour, serializable, serializeObject, GameObject } from “@needle-tools/engine”;
import { Object3D } from “three”;

export class RaceStarter extends Behaviour {

@serializable(Animator[6])
public horseAnimators?: Animator[];

@serializable(Animator)
public raceAnimator?: Animator;

start()
{
        console.log("RaceStarter start");

        this.raceAnimator?.setTrigger("StartRace");

        //start all horses
        if (this.horseAnimators) {
            for (let i = 0; i < this.horseAnimators.length; i++) {
                this.horseAnimators[i].setTrigger("StartRace");
            }
        }

}

}`

by user 259070246382469121

5

The array should be delcared like so.

    @serializable(Animator)
    public horseAnimators?: Animator[];

You can check that the array is correct my simply logging the array variable into console.

6

As usual with all my questions here, I am an idiot. Thank you :slightly_smiling_face:

by user 259070246382469121

7

Don’t worry :green_heart:

8

Glad that it is working :+1: