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Simple golfclub that makes and jumps to balls

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PhilipRosedale 2016-04-07 18:03:45 -07:00
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commit 61f4009b22
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examples/golfclub/golfClub.js Normal file
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//
// golfClub.js
//
// Created by Philip Rosedale on 11/11/15.
// Copyright 2015 High Fidelity, Inc.
//
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
// A simple golf club. If you have equipped it, and pull trigger, it will either make
// you a new golf ball, or take you to your ball if one is not made.
(function () {
var ball = null;
var HIFI_PUBLIC_BUCKET = "http://s3.amazonaws.com/hifi-public/";
var collisionSoundURL = HIFI_PUBLIC_BUCKET + "sounds/Collisions-ballhitsandcatches/billiards/collision1.wav";
var triggerState = false;
var BALL_GRAVITY = -9.8;
var BALL_START_VELOCITY = 0.1;
var BALL_MAX_RANGE = 10;
var BALL_DROP_DISTANCE = 0.6;
var BALL_DIAMETER = 0.07;
var BALL_LIFETIME = 3600;
var MAX_BRAKING_SPEED = 0.2;
var BALL_BRAKING_RATE = 0.5;
var TRIGGER_CONTROLS = [
Controller.Standard.LT,
Controller.Standard.RT,
];
function triggerPulled(hand) {
// Return true if the trigger has just been pulled
var triggerValue = Controller.getValue(TRIGGER_CONTROLS[hand]);
var oldTriggerState = triggerState;
var TRIGGER_PULL_THRESHOLD = 0.5;
var TRIGGER_RELEASE_THRESHOLD = 0.4;
if (triggerValue > TRIGGER_PULL_THRESHOLD) {
triggerState = true;
} else if (triggerValue < TRIGGER_RELEASE_THRESHOLD) {
triggerState = false;
}
return (triggerState && (oldTriggerState != triggerState));
}
function ballPosition(ball) {
// return the position of this entity
var properties = Entities.getEntityProperties(ball);
if (!properties) {
return null;
} else {
return properties.position;
}
}
function gotoPointOnGround(position, away) {
// Position yourself facing in the direction you were originally facing, but with a
// point on the ground *away* meters from *position* and in front of you.
var offset = Quat.getFront(MyAvatar.orientation);
offset.y = 0.0;
offset = Vec3.multiply(-away, Vec3.normalize(offset));
var newAvatarPosition = Vec3.sum(position, offset);
// Assuming position is on ground, put me distance from eyes to hips higher, plus a 50% adjust for longer legs.
// TODO: Need avatar callback for exact foot-to-hips height.
var halfHeight = avatarHalfHeight();
print("Height = " + halfHeight);
newAvatarPosition.y += (halfHeight * 1.5);
MyAvatar.position = newAvatarPosition;
}
function inFrontOfMe() {
return Vec3.sum(MyAvatar.position, Vec3.multiply(BALL_DROP_DISTANCE, Quat.getFront(MyAvatar.orientation)));
}
function avatarHalfHeight() {
return MyAvatar.getDefaultEyePosition().y - MyAvatar.position.y;
}
function brakeBall(ball) {
// Check the ball's velocity and slow it down if beyond a threshold
var properties = Entities.getEntityProperties(ball);
if (properties) {
var velocity = Vec3.length(properties.velocity);
if ((velocity > 0) && (velocity < MAX_BRAKING_SPEED)) {
Entities.editEntity(ball, { velocity: Vec3.multiply(BALL_BRAKING_RATE, properties.velocity) });
}
}
}
function makeBall(position) {
// Create a new sphere entity
ball = Entities.addEntity({
type: "Sphere",
position: position,
color: { red: 255, green: 255, blue: 255 },
dimensions: { x: BALL_DIAMETER, y: BALL_DIAMETER, z: BALL_DIAMETER },
gravity: { x: 0, y: BALL_GRAVITY, z: 0 },
velocity: { x: 0, y: BALL_START_VELOCITY, z: 0 },
friction: 0.5,
restitution: 0.5,
shapeType: "sphere",
dynamic: true,
lifetime: BALL_LIFETIME,
collisionSoundURL: collisionSoundURL
});
}
function checkClub(params) {
var hand = params[0] == "left" ? 0 : 1;
var makeNewBall = false;
if (triggerPulled(hand)) {
// If trigger just pulled, either drop new ball or go to existing one
var position = ballPosition(ball);
if (position && (Vec3.distance(MyAvatar.position, position) < BALL_MAX_RANGE)) {
gotoPointOnGround(position, BALL_DROP_DISTANCE);
} else {
Entities.deleteEntity(ball);
makeBall(inFrontOfMe());
}
}
brakeBall(ball);
}
this.continueEquip = function(id, params) {
// While holding the club, continuously check for trigger pull and brake ball if moving.
checkClub(params);
}
});

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examples/golfclub/golfClub.json Normal file
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{
"Entities": [
{
"collisionsWillMove": 1,
"compoundShapeURL": "http://hifi-content.s3.amazonaws.com/caitlyn/dev/Tutorials/Putter_phys.obj",
"created": "2016-04-07T23:19:30Z",
"description": "Spawns ball or jumps to ball with trigger",
"dimensions": {
"x": 0.043093059211969376,
"y": 1.1488667726516724,
"z": 0.42455694079399109
},
"dynamic": 1,
"id": "{266a9bc2-cff5-4128-b347-5eab519d8209}",
"modelURL": "http://hifi-content.s3.amazonaws.com/caitlyn/dev/Tutorials/putter_VR.fbx",
"name": "Golf Putter",
"queryAACube": {
"scale": 1.2255613803863525,
"x": -0.61278069019317627,
"y": -0.61278069019317627,
"z": -0.61278069019317627
},
"rotation": {
"w": 0.41972994804382324,
"x": 0.78570234775543213,
"y": -0.41875332593917847,
"z": 0.17653167247772217
},
"script": "https://s3.amazonaws.com/hifi-public/philip/golfClub.js",
"shapeType": "compound",
"type": "Model",
"userData": "{\"wearable\":{\"joints\":{\"LeftHand\":[{\"x\":-0.1631782054901123,\"y\":0.44648152589797974,\"z\":0.10100018978118896},{\"x\":-0.9181621670722961,\"y\":-0.0772884339094162,\"z\":-0.3870723247528076,\"w\":-0.0343472845852375}],\"RightHand\":[{\"x\":0.16826771199703217,\"y\":0.4757269620895386,\"z\":0.07139724493026733},{\"x\":-0.7976328134536743,\"y\":-0.0011603273451328278,\"z\":0.6030101776123047,\"w\":-0.012610925361514091}]}}}"
}
],
"Version": 57
}