/
scratch3_sensing.js
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/
scratch3_sensing.js
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const Cast = require('../util/cast');
const Timer = require('../util/timer');
const getMonitorIdForBlockWithArgs = require('../util/get-monitor-id');
class Scratch3SensingBlocks {
constructor (runtime) {
/**
* The runtime instantiating this block package.
* @type {Runtime}
*/
this.runtime = runtime;
/**
* The "answer" block value.
* @type {string}
*/
this._answer = '';
/**
* The timer utility.
* @type {Timer}
*/
this._timer = new Timer();
/**
* The stored microphone loudness measurement.
* @type {number}
*/
this._cachedLoudness = -1;
/**
* The time of the most recent microphone loudness measurement.
* @type {number}
*/
this._cachedLoudnessTimestamp = 0;
/**
* The list of queued questions and respective `resolve` callbacks.
* @type {!Array}
*/
this._questionList = [];
this.runtime.on('ANSWER', this._onAnswer.bind(this));
this.runtime.on('PROJECT_START', this._resetAnswer.bind(this));
this.runtime.on('PROJECT_STOP_ALL', this._clearAllQuestions.bind(this));
this.runtime.on('STOP_FOR_TARGET', this._clearTargetQuestions.bind(this));
this.runtime.on('RUNTIME_DISPOSED', this._resetAnswer.bind(this));
}
/**
* Retrieve the block primitives implemented by this package.
* @return {object.<string, Function>} Mapping of opcode to Function.
*/
getPrimitives () {
return {
sensing_touchingobject: this.touchingObject,
sensing_touchingcolor: this.touchingColor,
sensing_coloristouchingcolor: this.colorTouchingColor,
sensing_distanceto: this.distanceTo,
sensing_timer: this.getTimer,
sensing_resettimer: this.resetTimer,
sensing_of: this.getAttributeOf,
sensing_mousex: this.getMouseX,
sensing_mousey: this.getMouseY,
sensing_setdragmode: this.setDragMode,
sensing_mousedown: this.getMouseDown,
sensing_keypressed: this.getKeyPressed,
sensing_current: this.current,
sensing_dayssince2000: this.daysSince2000,
sensing_loudness: this.getLoudness,
sensing_loud: this.isLoud,
sensing_askandwait: this.askAndWait,
sensing_answer: this.getAnswer,
sensing_username: this.getUsername,
sensing_userid: () => {} // legacy no-op block
};
}
getMonitored () {
return {
sensing_answer: {
getId: () => 'answer'
},
sensing_loudness: {
getId: () => 'loudness'
},
sensing_timer: {
getId: () => 'timer'
},
sensing_current: {
// This is different from the default toolbox xml id in order to support
// importing multiple monitors from the same opcode from sb2 files,
// something that is not currently supported in scratch 3.
getId: (_, fields) => getMonitorIdForBlockWithArgs('current', fields) // _${param}`
}
};
}
_onAnswer (answer) {
this._answer = answer;
const questionObj = this._questionList.shift();
if (questionObj) {
const [_question, resolve, target, wasVisible, wasStage] = questionObj;
// If the target was visible when asked, hide the say bubble unless the target was the stage.
if (wasVisible && !wasStage) {
this.runtime.emit('SAY', target, 'say', '');
}
resolve();
this._askNextQuestion();
}
}
_resetAnswer () {
this._answer = '';
}
_enqueueAsk (question, resolve, target, wasVisible, wasStage) {
this._questionList.push([question, resolve, target, wasVisible, wasStage]);
}
_askNextQuestion () {
if (this._questionList.length > 0) {
const [question, _resolve, target, wasVisible, wasStage] = this._questionList[0];
// If the target is visible, emit a blank question and use the
// say event to trigger a bubble unless the target was the stage.
if (wasVisible && !wasStage) {
this.runtime.emit('SAY', target, 'say', question);
this.runtime.emit('QUESTION', '');
} else {
this.runtime.emit('QUESTION', question);
}
}
}
_clearAllQuestions () {
this._questionList = [];
this.runtime.emit('QUESTION', null);
}
_clearTargetQuestions (stopTarget) {
const currentlyAsking = this._questionList.length > 0 && this._questionList[0][2] === stopTarget;
this._questionList = this._questionList.filter(question => (
question[2] !== stopTarget
));
if (currentlyAsking) {
this.runtime.emit('SAY', stopTarget, 'say', '');
if (this._questionList.length > 0) {
this._askNextQuestion();
} else {
this.runtime.emit('QUESTION', null);
}
}
}
askAndWait (args, util) {
const _target = util.target;
return new Promise(resolve => {
const isQuestionAsked = this._questionList.length > 0;
this._enqueueAsk(String(args.QUESTION), resolve, _target, _target.visible, _target.isStage);
if (!isQuestionAsked) {
this._askNextQuestion();
}
});
}
getAnswer () {
return this._answer;
}
touchingObject (args, util) {
return util.target.isTouchingObject(args.TOUCHINGOBJECTMENU);
}
touchingColor (args, util) {
const color = Cast.toRgbColorList(args.COLOR);
return util.target.isTouchingColor(color);
}
colorTouchingColor (args, util) {
const maskColor = Cast.toRgbColorList(args.COLOR);
const targetColor = Cast.toRgbColorList(args.COLOR2);
return util.target.colorIsTouchingColor(targetColor, maskColor);
}
distanceTo (args, util) {
if (util.target.isStage) return 10000;
let targetX = 0;
let targetY = 0;
if (args.DISTANCETOMENU === '_mouse_') {
targetX = util.ioQuery('mouse', 'getScratchX');
targetY = util.ioQuery('mouse', 'getScratchY');
} else {
args.DISTANCETOMENU = Cast.toString(args.DISTANCETOMENU);
const distTarget = this.runtime.getSpriteTargetByName(
args.DISTANCETOMENU
);
if (!distTarget) return 10000;
targetX = distTarget.x;
targetY = distTarget.y;
}
const dx = util.target.x - targetX;
const dy = util.target.y - targetY;
return Math.sqrt((dx * dx) + (dy * dy));
}
setDragMode (args, util) {
util.target.setDraggable(args.DRAG_MODE === 'draggable');
}
getTimer (args, util) {
return util.ioQuery('clock', 'projectTimer');
}
resetTimer (args, util) {
util.ioQuery('clock', 'resetProjectTimer');
}
getMouseX (args, util) {
return util.ioQuery('mouse', 'getScratchX');
}
getMouseY (args, util) {
return util.ioQuery('mouse', 'getScratchY');
}
getMouseDown (args, util) {
return util.ioQuery('mouse', 'getIsDown');
}
current (args) {
const menuOption = Cast.toString(args.CURRENTMENU).toLowerCase();
const date = new Date();
switch (menuOption) {
case 'year': return date.getFullYear();
case 'month': return date.getMonth() + 1; // getMonth is zero-based
case 'date': return date.getDate();
case 'dayofweek': return date.getDay() + 1; // getDay is zero-based, Sun=0
case 'hour': return date.getHours();
case 'minute': return date.getMinutes();
case 'second': return date.getSeconds();
}
return 0;
}
getKeyPressed (args, util) {
return util.ioQuery('keyboard', 'getKeyIsDown', [args.KEY_OPTION]);
}
daysSince2000 () {
const msPerDay = 24 * 60 * 60 * 1000;
const start = new Date(2000, 0, 1); // Months are 0-indexed.
const today = new Date();
const dstAdjust = today.getTimezoneOffset() - start.getTimezoneOffset();
let mSecsSinceStart = today.valueOf() - start.valueOf();
mSecsSinceStart += ((today.getTimezoneOffset() - dstAdjust) * 60 * 1000);
return mSecsSinceStart / msPerDay;
}
getLoudness () {
if (typeof this.runtime.audioEngine === 'undefined') return -1;
if (this.runtime.currentStepTime === null) return -1;
// Only measure loudness once per step
const timeSinceLoudness = this._timer.time() - this._cachedLoudnessTimestamp;
if (timeSinceLoudness < this.runtime.currentStepTime) {
return this._cachedLoudness;
}
this._cachedLoudnessTimestamp = this._timer.time();
this._cachedLoudness = this.runtime.audioEngine.getLoudness();
return this._cachedLoudness;
}
isLoud () {
return this.getLoudness() > 10;
}
getAttributeOf (args) {
let attrTarget;
if (args.OBJECT === '_stage_') {
attrTarget = this.runtime.getTargetForStage();
} else {
args.OBJECT = Cast.toString(args.OBJECT);
attrTarget = this.runtime.getSpriteTargetByName(args.OBJECT);
}
// attrTarget can be undefined if the target does not exist
// (e.g. single sprite uploaded from larger project referencing
// another sprite that wasn't uploaded)
if (!attrTarget) return 0;
// Generic attributes
if (attrTarget.isStage) {
switch (args.PROPERTY) {
// Scratch 1.4 support
case 'background #': return attrTarget.currentCostume + 1;
case 'backdrop #': return attrTarget.currentCostume + 1;
case 'backdrop name':
return attrTarget.getCostumes()[attrTarget.currentCostume].name;
case 'volume': return attrTarget.volume;
}
} else {
switch (args.PROPERTY) {
case 'x position': return attrTarget.x;
case 'y position': return attrTarget.y;
case 'direction': return attrTarget.direction;
case 'costume #': return attrTarget.currentCostume + 1;
case 'costume name':
return attrTarget.getCostumes()[attrTarget.currentCostume].name;
case 'size': return attrTarget.size;
case 'volume': return attrTarget.volume;
}
}
// Target variables.
const varName = args.PROPERTY;
const variable = attrTarget.lookupVariableByNameAndType(varName, '', true);
if (variable) {
return variable.value;
}
// Otherwise, 0
return 0;
}
getUsername (args, util) {
return util.ioQuery('userData', 'getUsername');
}
}
module.exports = Scratch3SensingBlocks;