overte-thingvellir/examples/baseball/pitching.js

Script.include("line.js");

var AUDIO = {
    crowdBoos: [
        SoundCache.getSound("atp:c632c92b166ade60aa16b23ff1dfdf712856caeb83bd9311980b2d5edac821af.wav", false)
    ],
    crowdCheers: [
        SoundCache.getSound("atp:0821bf2ac60dd2f356dfdd948e8bb89c23984dc3584612f6c815765154f02cae.wav", false),
        SoundCache.getSound("atp:b8044401a846ed29f881a0b9b80cf1ba41f26327180c28fc9c70d144f9b70045.wav", false),
    ],
    batHit: [
        SoundCache.getSound("atp:6f0b691a0c9c9ece6557d97fe242b1faec4020fe26efc9c17327993b513c5fe5.wav", false),
        SoundCache.getSound("atp:5be5806205158ebdc5c3623ceb7ae73315028b51ffeae24292aff7042e3fa6a9.wav", false),
        SoundCache.getSound("atp:e68661374e2145c480809c26134782aad11e0de456c7802170c7abccc4028873.wav", false),
        SoundCache.getSound("atp:787e3c9af17dd3929527787176ede83d6806260e63ddd5a4cef48cd22e32c6f7.wav", false),
        SoundCache.getSound("atp:fc65383431a6238c7a4749f0f6f061f75a604ed5e17d775ab1b2955609e67ebb.wav", false),
    ]
}

var PITCH_THUNK_SOUND_URL = "http://hifi-public.s3.amazonaws.com/sounds/ping_pong_gun/pong_sound.wav";
var pitchSound = SoundCache.getSound(PITCH_THUNK_SOUND_URL, false);

var PITCHING_MACHINE_URL = "atp:87d4879530b698741ecc45f6f31789aac11f7865a2c3bec5fe9b061a182c80d4.fbx";
var PITCHING_MACHINE_OUTPUT_OFFSET_PCT = {
    x: 0.0,
    y: 0.25,
    z: -1.05,
};
var PITCHING_MACHINE_PROPERTIES = {
    name: "Pitching Machine",
    type: "Model",
    position: {
        x: 0,
        y: 0.8,
        z: -18.3,
    },
    velocity: {
        x: 0,
        y: -0.01,
        z: 0
    },
    gravity: {
        x: 0.0,
        y: -9.8,
        z: 0.0
    },
    registrationPoint: {
        x: 0.5,
        y: 0.5,
        z: 0.5,
    },
    rotation: Quat.fromPitchYawRollDegrees(0, 180, 0),
    modelURL: PITCHING_MACHINE_URL,
    dimensions: {
        x: 0.4,
        y: 0.61,
        z: 0.39
    },
    collisionsWillMove: false,
    shapeType: "Box",
};
PITCHING_MACHINE_PROPERTIES.dimensions = Vec3.multiply(2.5, PITCHING_MACHINE_PROPERTIES.dimensions);
var DISTANCE_FROM_PLATE = PITCHING_MACHINE_PROPERTIES.position.z;

var PITCH_RATE = 5000;

var BASEBALL_MODEL_URL = "atp:7185099f1f650600ca187222573a88200aeb835454bd2f578f12c7fb4fd190fa.fbx";
var BASEBALL_MIN_SPEED = 2.7;
var BASEBALL_MAX_SPEED = 5.7;
var BASEBALL_RADIUS = 0.07468;
var BASEBALL_PROPERTIES = {
    name: "Baseball",
    type: "Model",
    modelURL: BASEBALL_MODEL_URL,
    shapeType: "Sphere",
    position: {
        x: 0,
        y: 0,
        z: 0
    },
    dimensions: {
        x: BASEBALL_RADIUS,
        y: BASEBALL_RADIUS,
        z: BASEBALL_RADIUS
    },
    collisionsWillMove: true,
    angularVelocity: {
        x: 17.0,
        y: 0,
        z: -8.0,

        x: 0.0,
        y: 0,
        z: 0.0,
    },
    angularDamping: 0.0,
    damping: 0.0,
    restitution: 0.5,
    friction: 0.0,
    lifetime: 20,
    //collisionSoundURL: PITCH_THUNK_SOUND_URL,
    gravity: {
        x: 0,
        y: 0,//-9.8,
        z: 0
    }
};


var pitchingMachineID = Entities.addEntity(PITCHING_MACHINE_PROPERTIES);

var pitchFromPosition = { x: 0, y: 1.0, z: 0 };
var pitchDirection = { x: 0, y: 0, z: 1 };

function shallowCopy(obj) {
    var copy = {}
    for (var key in obj) {
        copy[key] = obj[key];
    }
    return copy;
}

function randomInt(low, high) {
    return Math.floor(randomFloat(low, high));
}

function randomFloat(low, high) {
    if (high === undefined) {
        high = low;
        low = 0;
    }
    return low + Math.random() * (high - low);
}

var ACCELERATION_SPREAD = 10.15;

function Baseball(position, velocity, ballScale) {
    var self = this;

    // Setup entity properties 
    var properties = shallowCopy(BASEBALL_PROPERTIES);
    properties.position = position;
    properties.velocity = velocity;
    /*
    properties.gravity = {
        x: randomInt(-ACCELERATION_SPREAD, ACCELERATION_SPREAD),
        y: randomInt(-ACCELERATION_SPREAD, ACCELERATION_SPREAD),
        z: 0.0,
    };
    */
    properties.dimensions = Vec3.multiply(ballScale, properties.dimensions);

    // Create entity
    this.entityID = Entities.addEntity(properties);
    this.trail = null;
    this.onHit = function() { return true; };
    this.hasBeenHit = false;

    this.boundCollisionCallback = function(a, b, c) { self.collisionCallback.call(self, a, b, c); };
    Script.addEventHandler(this.entityID, "collisionWithEntity", this.boundCollisionCallback);
    /*
    if (false && Math.random() < 0.5) {
        for (var i = 0; i < 50; i++) {
            Script.setTimeout(function() {
                Entities.editEntity(entityID, {
                    gravity: {
                        x: randomInt(-ACCELERATION_SPREAD, ACCELERATION_SPREAD),
                        y: randomInt(-ACCELERATION_SPREAD, ACCELERATION_SPREAD),
                        z: 0.0,
                    }
                })
            }, i * 100);
        }
    }
    */
}

Baseball.prototype = {
    collisionCallback: function(entityA, entityB, collision) {
        var self = this;

        this.hasBeenHit = true;
        var properties = Entities.getEntityProperties(this.entityID, ['position', 'velocity']);
        this.trail = new InfiniteLine(properties.position, { red: 255, green: 128, blue: 89 });
        var lastPosition = properties.position;
        //Vec3.print("Velocity", properties.velocity);
        //Vec3.print("VelocityChange", collision.velocityChange);
        var speed = Vec3.length(properties.velocity);
        playRandomSound(AUDIO.batHit, {
            position: properties.position,
            volume: 2.0
        });
        var sounds = null;
        if (speed < 5.0) {
            sounds = AUDIO.crowdBoos;
        } else {
            sounds = AUDIO.crowdCheers;
        }
        var self = this;
        this.trailInterval = Script.setInterval(function() {
            var properties = Entities.getEntityProperties(self.entityID, ['position']);
            if (Vec3.distance(properties.position, lastPosition)) {
                self.trail.enqueuePoint(properties.position);
                lastPosition = properties.position;
            }
        }, 50);
        Entities.editEntity(self.entityID, {
            velocity: Vec3.multiply(2, properties.velocity),
            gravity: {
                x: 0,
                y: -9.8,
                z: 0
            }
        });

        var removeHandler = this.onHit(entityB, collision);
        if (removeHandler) {
            Script.removeEventHandler(self.entityID, "collisionWithEntity", self.boundCollisionCallback);
        }
    },
    cleanupTrail: function() {
        if (this.trail) {
            Script.clearInterval(this.trailInterval);
            this.trailInterval = null;

            this.trail.destroy();
            this.trail = null;
        }
    }
}

function playRandomSound(sounds, options) {
    if (options === undefined) {
        options = {
            volume: 1.0,
            position: MyAvatar.position,
        }
    }
    Audio.playSound(sounds[randomInt(sounds.length)], options);
}

var lastTrail = null;


function vec3Mult(a, b) {
    return {
        x: a.x * b.x,
        y: a.y * b.y,
        z: a.z * b.z,
    };
}

var lastBall = null;
var injector = null;

function pitchBall() {
    if (lastBall) {
        lastBall.cleanupTrail();
    }

    var machineProperties = Entities.getEntityProperties(pitchingMachineID, ["dimensions", "position", "rotation"]);
    var pitchFromPositionBase = machineProperties.position;
    var pitchFromOffset = vec3Mult(machineProperties.dimensions, PITCHING_MACHINE_OUTPUT_OFFSET_PCT);
    pitchFromOffset = Vec3.multiplyQbyV(machineProperties.rotation, pitchFromOffset);
    var pitchFromPosition = Vec3.sum(pitchFromPositionBase, pitchFromOffset);
    var pitchDirection = Quat.getFront(machineProperties.rotation);
    var ballScale = machineProperties.dimensions.x / PITCHING_MACHINE_PROPERTIES.dimensions.x;
    print("Creating baseball");

    var speed = randomFloat(BASEBALL_MIN_SPEED, BASEBALL_MAX_SPEED)
    var timeToPassPlate = (DISTANCE_FROM_PLATE + 1.0) / speed;

    var baseball = new Baseball(pitchFromPosition, Vec3.multiply(speed, pitchDirection), ballScale);
    lastBall = baseball;

    baseball.onHit = function(entityB, collision) {
        var properties = Entities.getEntityProperties(entityB, ["name"]);
        var name = properties.name;
        print("Hit: " + name);
        if (name == "backstop") {
            print("STRIKE");
        } else if (name == "bat") {
            print("HIT");
              Script.setTimeout(function() {
                  playRandomSound(sounds, {
                      position: { x: 0 ,y: 0, z: 0 },
                      volume: 1.0,
                  });
              }, 500);
        }
        //Script.clearTimeout(strikeTimeout);
        return true;
    }

    if (!injector) {
        injector = Audio.playSound(pitchSound, {
            position: pitchFromPosition,
            volume: 1.0
        });
    } else {
        injector.restart();
    }
}

Script.scriptEnding.connect(function() {
    Entities.deleteEntity(pitchingMachineID);
})

Script.setInterval(pitchBall, PITCH_RATE);