niklever/learn-webxr

Resources for my Udemy course

learn-webxr's Issues

Example 11：No Path line has been shown

Hi Nik! When I accessed index.html from the example 11 on my phone with Chrome, No Path line has been shown even I called showPathLines() without debugging as follow:
`newPath(pt){
const player = this.object;

    if (this.pathfinder===undefined){
        this.calculatedPath = [ pt.clone() ];
        //Calculate target direction
        this.setTargetDirection();
        this.action = 'walk';
        return;
    }
    
	//console.log(`New path to ${pt.x.toFixed(1)}, ${pt.y.toFixed(2)}, ${pt.z.toFixed(2)}`);	

	const targetGroup = this.pathfinder.getGroup(this.ZONE, pt);
	const closestTargetNode = this.pathfinder.getClosestNode(pt, this.ZONE, targetGroup);
	
	// Calculate a path to the target and store it
	this.calculatedPath = this.pathfinder.findPath(player.position, pt, this.ZONE, this.navMeshGroup);

	const self = this;
	
	if (this.calculatedPath && this.calculatedPath.length) {
		this.action = 'walk';
		
		const pt = this.calculatedPath[0].clone();
		this.setTargetDirection()
		
		if (!this.npc){
			this.showPathLines();
		}
	} else {
		this.action = 'idle';
		`
		THX for your HELP!

Have you ever thought about add fingerpose detect in webXR?

Hi Teacher Nik,

Recently, An issue came out of my mind, which is make object in WebXR change different behaviours according to my finger pose.

But

From immersive github, folks told us that “WebXR Device API does not provide a way to grant raw camera access to the sites.”.
I am not sure if feeding video into model.estimateHands is the only way to detect finger pose,

const predictions = await model.estimateHands(video);
just wondering if there is any other way to detect fingerpose in WebXR to you?

MANY THANKS FOR YOUR ASSISTANCE!

Example 11：Difference between "this" and "player" in Player.js

Hello, Nik! Nice course!
A difficulty has arisen after taking your course and attempting Example 11: What is the difference between "this" and "player" in Player.js?

The relevant code is as follows:
const player = this.object; const pt = this.calculatedPath[0].clone(); pt.y = player.position.y; const quaternion = player.quaternion.clone(); player.lookAt(pt); this.quaternion = player.quaternion.clone(); player.quaternion.copy(quaternion);

Why is it necessary to save "quanternion" to "player.quaternion" in the final line?

Does this imply that "player" stores quaternion in a temporary state after lookAt terget?

THX!