directional-blend-test.js

// Identifier for the animation state handler, we use this to remove the handler at the end of the script.
var animHandlerId;

var testTrigger = false;
var additiveBlendAlpha = 0.0;
var lookLeftRightAlpha = 0.0;
var lookUpDownAlpha = 0.0;

// Called every frame with the current value for the requested anim vars.
function animHandler(props) {
    props.additiveBlendAlpha = additiveBlendAlpha;
    props.lookAroundAlpha = {x: lookLeftRightAlpha, y: lookUpDownAlpha, z: 0};
    props.testTrigger = testTrigger;

    // clear triggers
    testTrigger = false;

    return props;
}

var ANIMVARLIST = [
    "additiveBlendAlpha",
    "lookAroundAlpha",
    "testTrigger"
];

function init() {
    var URL = "https://gist.githubusercontent.com/hyperlogic/651237c9c084c898f47d6d4e47e2dcc0/raw/778bbc6b9dd11a77d92ea1b49b4fef2a300f9f39/directional-blend-test.json";
    //var URL = "file:///c:/msys64/home/ajthy/code/hifi/interface/resources/avatar/directional-test.json";
    MyAvatar.setAnimGraphUrl(URL);
    animHandlerId = MyAvatar.addAnimationStateHandler(animHandler, ANIMVARLIST);

    Controller.keyPressEvent.connect(keyPressHandler);
}

var MIN_ADDITIVE_BLEND_ALPHA = 0;
var MAX_ADDITIVE_BLEND_ALPHA = 1;
var DELTA_ADDITIVE_BLEND_ALPHA = 0.05;

var MIN_LOOK_LEFT_RIGHT_ALPHA = -1;
var MAX_LOOK_LEFT_RIGHT_ALPHA = 1;
var DELTA_LOOK_LEFT_RIGHT_ALPHA = 0.05;

var MIN_LOOK_UP_DOWN_ALPHA = -1;
var MAX_LOOK_UP_DOWN_ALPHA = 1;
var DELTA_LOOK_UP_DOWN_ALPHA = 0.05;

function keyPressHandler(event) {
    if (event.text === "t") {
        testTrigger = true;
    } else if (event.text === ",") {
        additiveBlendAlpha = additiveBlendAlpha - DELTA_ADDITIVE_BLEND_ALPHA;
        if (additiveBlendAlpha < MIN_ADDITIVE_BLEND_ALPHA) {
            additiveBlendAlpha = MIN_ADDITIVE_BLEND_ALPHA;
        }
    } else if (event.text === ".") {
        additiveBlendAlpha = additiveBlendAlpha + DELTA_ADDITIVE_BLEND_ALPHA;
        if (additiveBlendAlpha > MAX_ADDITIVE_BLEND_ALPHA) {
            additiveBlendAlpha = MAX_ADDITIVE_BLEND_ALPHA;
        }
    } else if (event.text === "[") {
        lookLeftRightAlpha = lookLeftRightAlpha - DELTA_LOOK_LEFT_RIGHT_ALPHA;
        if (lookLeftRightAlpha < MIN_LOOK_LEFT_RIGHT_ALPHA) {
            lookLeftRightAlpha = MIN_LOOK_LEFT_RIGHT_ALPHA;
        }
    } else if (event.text === "]") {
        lookLeftRightAlpha = lookLeftRightAlpha + DELTA_LOOK_LEFT_RIGHT_ALPHA;
        if (lookLeftRightAlpha > MAX_LOOK_LEFT_RIGHT_ALPHA) {
            lookLeftRightAlpha = MAX_LOOK_LEFT_RIGHT_ALPHA;
        }
    } else if (event.text === "i") {
        lookUpDownAlpha = lookUpDownAlpha - DELTA_LOOK_UP_DOWN_ALPHA;
        if (lookUpDownAlpha < MIN_LOOK_UP_DOWN_ALPHA) {
            lookUpDownAlpha = MIN_LOOK_UP_DOWN_ALPHA;
        }
    } else if (event.text === "o") {
        lookUpDownAlpha = lookUpDownAlpha + DELTA_LOOK_UP_DOWN_ALPHA;
        if (lookUpDownAlpha > MAX_LOOK_UP_DOWN_ALPHA) {
            lookUpDownAlpha = MAX_LOOK_UP_DOWN_ALPHA;
        }
    }

}

function shutdown() {
    MyAvatar.removeAnimationStateHandler(animHandlerId);
    MyAvatar.restoreAnimation();
    var ORIG_URL = "qrc:///avatar/avatar-animation.json";
    MyAvatar.setAnimGraphUrl(ORIG_URL);
}

Script.scriptEnding.connect(shutdown);
init();