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How to use activeClients method in Best

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game.js

Source:game.js

1let present = require('present');2let fs = require('fs');3let Player = require('./player.js');4let HIGH_SCORES_FILE_NAME = 'highScores.json';5const MAX_HIGH_SCORES = 10;6const UPDATE_RATE_MS = 25;7let quit = false;8let lastUpdateTime = present();9let clients = {};			// All clients10let activeClients = {};		// Clients that are currently in the game11let asteroids = {};12let nextAsteroidId = 0;13const STARTING_NUM_ASTEROIDS = 5;14const MAX_ASTEROIDS = 10;15const ASTEROID_COUNTDOWN = 10;16let timeUntilNextAsteroid = ASTEROID_COUNTDOWN;17let projectiles = {};18let nextProjectileId = 0;19let ufos = {};20let nextUFOId = 0;21const MAX_UFOS = 1;22const UFO_COUNTDOWN = 30;23let timeUntilNextUFO = UFO_COUNTDOWN;24let ufoProjectiles = {};25let nextUFOProjectileId = 0;26let bounds = {27	x: {28		lower: 0,29		upper: 730	},31	y: {32		lower: 0,33		upper: 534	}35};36function randomNormal(mean, stdDev) {37	let u = Math.random();38	let v = Math.random();39	while (u == 0) { u = Math.random(); }			// u and v can't be 0.40	while (v == 0) { v = Math.random(); }41	return Math.sqrt(-2 * Math.log(u)) * Math.cos(2 * Math.PI * v) * stdDev + mean;42};43const asteroidRadius = {44	SMALL: 0.025,45	MEDIUM: 0.05,46	LARGE: 0.147}48function initializeAsteroids() {49	asteroids = {};50	for (let i = 0; i < STARTING_NUM_ASTEROIDS; i++) {51		asteroids[nextAsteroidId] = {52			asteroidId: nextAsteroidId++,53			position: {54				x: Math.random() * (bounds.x.upper - bounds.x.lower) + bounds.x.lower,55				y: Math.random() * (bounds.y.upper - bounds.y.lower) + bounds.y.lower56			},57			velocity: {58				x: Math.random() * 0.2 - 0.1,59				y: Math.random() * 0.2 - 0.160			},61			radius: asteroidRadius.LARGE,62			angle: Math.random() * 36063		};64	}65}66function createAsteroid() {67	let point = getRandomPerimeterPoint();68	asteroids[nextAsteroidId] = {69		asteroidId: nextAsteroidId,70		position: {71			x: point.x,72			y: point.y73		},74		velocity: {75			x: Math.random() * 0.2 - 0.1,76			y: Math.random() * 0.2 - 0.177		},78		radius: asteroidRadius.LARGE,79		angle: Math.random() * 36080	};81	return asteroids[nextAsteroidId++];82}83function playerAsteroidHit(asteroidId, projectileId) {84	let newAsteroids = {};85	let newSize = asteroidRadius.SMALL;86	let maxSpeed = 0.3;87	let numNew = 0;88	let score = 50;89	if (asteroids[asteroidId].radius === asteroidRadius.LARGE) {90		newSize = asteroidRadius.MEDIUM;91		maxSpeed = 0.25;92		numNew = 3;93		score = 10;94	} else if (asteroids[asteroidId].radius === asteroidRadius.MEDIUM) {95		numNew = 2;96		score = 25;97	}98	activeClients[projectiles[projectileId].playerId].player.addToScore(score);99	for (let i = 0; i < numNew; i++) {100		let newAsteroid = {101			asteroidId: nextAsteroidId,102			position: {103				x: asteroids[asteroidId].position.x,104				y: asteroids[asteroidId].position.y105			},106			velocity: {107				x: (2 * Math.random() - 1) * maxSpeed,108				y: (2 * Math.random() - 1) * maxSpeed109			},110			radius: newSize,111			angle: Math.random() * 360112		};113		newAsteroids[nextAsteroidId] = newAsteroid;114		asteroids[nextAsteroidId++] = newAsteroid;115	}116	for (let id in activeClients) {117		activeClients[id].socket.emit('projectile-hit', {118			asteroidId: asteroidId,119			projectileId: projectileId,120			newAsteroids: newAsteroids,121			score: score122		});123	}124	delete asteroids[asteroidId];125	delete projectiles[projectileId];126	// if (Object.keys(asteroids).length === 0) {127	// 	let maxScore = 0;128	// 	let winnerIds = [];129	// 	for (let id in activeClients) {130	// 		if (activeClients[id].player.score === maxScore) {131	// 			winnerIds.push(id);132	// 		} else if (activeClients[id].player.score > maxScore) {133	// 			winnerIds = [id];134	// 			maxScore = activeClients[id].player.score;135	// 		}136	// 	}137	// 	for (let id in activeClients) {138	// 		activeClients[id].socket.emit('game-over', {139	// 			winnerIds: winnerIds140	// 		});141	// 	}142	// 	saveHighScores();143	// }144}145function ufoAsteroidHit(asteroidId, ufoProjectileId) {146	let newAsteroids = {};147	let newSize = asteroidRadius.SMALL;148	let maxSpeed = 0.3;149	let numNew = 0;150	let score = 50;151	if (asteroids[asteroidId].radius === asteroidRadius.LARGE) {152		newSize = asteroidRadius.MEDIUM;153		maxSpeed = 0.25;154		numNew = 3;155	} else if (asteroids[asteroidId].radius === asteroidRadius.MEDIUM) {156		numNew = 2;157	}158	for (let i = 0; i < numNew; i++) {159		let newAsteroid = {160			asteroidId: nextAsteroidId,161			position: {162				x: asteroids[asteroidId].position.x,163				y: asteroids[asteroidId].position.y164			},165			velocity: {166				x: (2 * Math.random() - 1) * maxSpeed,167				y: (2 * Math.random() - 1) * maxSpeed168			},169			radius: newSize,170			angle: Math.random() * 360171		};172		newAsteroids[nextAsteroidId] = newAsteroid;173		asteroids[nextAsteroidId++] = newAsteroid;174	}175	for (let id in activeClients) {176		activeClients[id].socket.emit('ufo-projectile-hit', {177			asteroidId: asteroidId,178			ufoProjectileId: ufoProjectileId,179			newAsteroids: newAsteroids,180		});181	}182	delete asteroids[asteroidId];183	// UFO projectiles break asteroids and keep going.184	// delete ufoProjectiles[ufoProjectileId];185}186let inputQueue = [];187function fireProjectile(playerId) {188	let projectile = {189		playerId: playerId,190		projectileId: nextProjectileId,191		position: {192			x: activeClients[playerId].player.position.x,193			y: activeClients[playerId].player.position.y194		},195		velocity: {196			x: Math.sin(activeClients[playerId].player.angle * Math.PI / 180),197			y: -Math.cos(activeClients[playerId].player.angle * Math.PI / 180)198		},199		angle: activeClients[playerId].player.angle,200		radius: 1 / 80,201		remainingLifetime: 1.0202	};203	projectiles[nextProjectileId++] = projectile;204	for (let id in activeClients) {205		activeClients[id].socket.emit('new-projectile', projectile);206	}207}208function createUFO(x, y) {209	let point = getRandomPerimeterPoint();210	ufos[nextUFOId] = {211		id: nextUFOId,212		position: {213			x: point.x,214			y: point.y215		},216		velocity: {217			x: 0,218			y: 0219		},220		radius: 0.1,221		speed: 0.25,222		stationaryTime: 5,223		remainingStationaryTime: 0.000001,224		timeBetweenShots: 2,225		timeUntilNextShot: 2,226		startingHealth: 10,227		remainingHealth: 10,228		goal: {229			x: 0,230			y: 0231		}232	};233	return ufos[nextUFOId++];234}235function processInput() {236	let inputToProcess = inputQueue;237	inputQueue = [];238	for (let input of inputToProcess) {239		if (activeClients.hasOwnProperty(input.id)) {240			activeClients[input.id].lastMessageId = input.data.messageId;241			switch(input.data.type) {242				case 'thrust':243					activeClients[input.id].player.thrust(input.data.elapsedTime, input.receiveTime - lastUpdateTime);244	                lastUpdateTime = input.receiveTime;245					break;246				case 'rotate-right':247					activeClients[input.id].player.rotateRight(input.data.elapsedTime);248					break;249				case 'rotate-left':250					activeClients[input.id].player.rotateLeft(input.data.elapsedTime);251					break;252				case 'shoot':253					if (activeClients[input.id].player.shoot()) {254						fireProjectile(input.id);255					}256					break;257				default:;258			}259		}260	}261}262// Get a point dist units outside of the map.263function getRandomPerimeterPoint(dist=0) {264	let rectWidth = bounds.x.upper - bounds.x.lower;265	let rectHeight = bounds.y.upper - bounds.y.lower;266	let rand = 2 * Math.random() * (rectWidth + rectHeight);267	if (rand < rectWidth) {268		return { x: rand + bounds.x.lower, y: bounds.y.lower - dist };269	}270	rand -= rectWidth;271	if (rand < rectWidth) {272		return { x: rand + bounds.x.lower, y: bounds.y.upper + dist };273	}274	rand -= rectWidth;275	if (rand < rectHeight) {276		return { x: bounds.x.lower - dist, y: rand + bounds.y.lower };277	}278	rand -= rectHeight279	return { x: bounds.x.upper + dist, y: rand + bounds.y.lower };280}281function updateAsteroids(elapsedTime) {282	for (let id in asteroids) {283		asteroids[id].position.x += asteroids[id].velocity.x * elapsedTime / 1000;284		asteroids[id].position.y += asteroids[id].velocity.y * elapsedTime / 1000;285		if (asteroids[id].position.x < bounds.x.lower - asteroids[id].radius) {286			asteroids[id].position.x = bounds.x.upper + asteroids[id].radius;287		} else if (asteroids[id].position.x > bounds.x.upper + asteroids[id].radius) {288			asteroids[id].position.x = bounds.x.lower - asteroids[id].radius;289		}290		if (asteroids[id].position.y < bounds.y.lower - asteroids[id].radius) {291			asteroids[id].position.y = bounds.y.upper + asteroids[id].radius;292		} else if (asteroids[id].position.y > bounds.y.upper + asteroids[id].radius) {293			asteroids[id].position.y = bounds.y.lower - asteroids[id].radius;294		}295	}296	if (Object.keys(activeClients).length > 0) {297		if (timeUntilNextAsteroid > 0 && Object.keys(asteroids).length < MAX_ASTEROIDS) {298			timeUntilNextAsteroid -= elapsedTime / 1000;299		}300		if (timeUntilNextAsteroid <= 0) {301			let newAsteroid = createAsteroid();302			for (let id in activeClients) {303				activeClients[id].socket.emit('new-asteroid', newAsteroid);304			}305			timeUntilNextAsteroid += ASTEROID_COUNTDOWN;306		}307	}308}309function updateProjectiles(elapsedTime) {310	for (let id in projectiles) {311		projectiles[id].position.x += projectiles[id].velocity.x * elapsedTime / 1000;312		projectiles[id].position.y += projectiles[id].velocity.y * elapsedTime / 1000;313		projectiles[id].remainingLifetime -= elapsedTime / 1000;314		if (projectiles[id].position.x < bounds.x.lower ||315			projectiles[id].position.x > bounds.x.upper ||316			projectiles[id].position.y < bounds.y.lower ||317			projectiles[id].position.y > bounds.y.upper) {318			delete projectiles[id];319		} else if (projectiles[id].remainingLifetime <= 0) {320			for (let clientId in activeClients) {321				activeClients[clientId].socket.emit('projectile-fade', {322					id: id323				});324			}325			delete projectiles[id];326		}327	}328}329function updateUFOProjectiles(elapsedTime) {330	for (let id in ufoProjectiles) {331		ufoProjectiles[id].position.x += ufoProjectiles[id].velocity.x * elapsedTime / 1000;332		ufoProjectiles[id].position.y += ufoProjectiles[id].velocity.y * elapsedTime / 1000;333		ufoProjectiles[id].remainingLifetime -= elapsedTime / 1000;334		if (ufoProjectiles[id].position.x < bounds.x.lower ||335			ufoProjectiles[id].position.x > bounds.x.upper ||336			ufoProjectiles[id].position.y < bounds.y.lower ||337			ufoProjectiles[id].position.y > bounds.y.upper) {338			delete ufoProjectiles[id];339		} else if (ufoProjectiles[id].remainingLifetime <= 0) {340			for (let clientId in activeClients) {341				activeClients[clientId].socket.emit('ufo-projectile-fade', {342					id: id343				});344			}345			delete ufoProjectiles[id];346		}347	}348}349function updateUFOs(elapsedTime) {350	for (let id in ufos) {351		if (ufos[id].remainingStationaryTime > 0) {352			ufos[id].remainingStationaryTime -= elapsedTime / 1000;353			if (ufos[id].remainingStationaryTime <= 0) {354				ufos[id].goal.x = Math.random() * (bounds.x.upper - bounds.x.lower) + bounds.x.lower;355				ufos[id].goal.y = Math.random() * (bounds.y.upper - bounds.y.lower) + bounds.y.lower;356				let dist = Math.sqrt(Math.pow(ufos[id].goal.x - ufos[id].position.x, 2) + Math.pow(ufos[id].goal.y - ufos[id].position.y, 2));357				ufos[id].velocity.x = ufos[id].speed * (ufos[id].goal.x - ufos[id].position.x) / dist;358				ufos[id].velocity.y = ufos[id].speed * (ufos[id].goal.y - ufos[id].position.y) / dist;359				for (let clientId in activeClients) {360					activeClients[clientId].socket.emit('ufo-start', {361						id: id,362						velocity: ufos[id].velocity363					});364				}365			}366		} else {367			if (Math.pow(ufos[id].goal.x - ufos[id].position.x, 2) + Math.pow(ufos[id].goal.y - ufos[id].position.y, 2) < 0.01) {368				ufos[id].velocity.x = 0;369				ufos[id].velocity.y = 0;370				ufos[id].remainingStationaryTime += ufos[id].stationaryTime;371				for (let clientId in activeClients) {372					activeClients[clientId].socket.emit('ufo-stop', {373						id: id,374						position: ufos[id].position375					});376				}377			} else {378				ufos[id].position.x += ufos[id].velocity.x * elapsedTime / 1000;379				ufos[id].position.y += ufos[id].velocity.y * elapsedTime / 1000;380			}381		}382		ufos[id].timeUntilNextShot -= elapsedTime / 1000;383		if (ufos[id].timeUntilNextShot <= 0) {384			ufos[id].timeUntilNextShot += ufos[id].timeBetweenShots;385			let angle = Math.random() * 360;386			let ufoProjectile = {387				ufoId: id,388				ufoProjectileId: nextUFOProjectileId,389				position: {390					x: ufos[id].position.x,391					y: ufos[id].position.y392				},393				velocity: {394					x: Math.sin(angle * Math.PI / 180),395					y: -Math.cos(angle * Math.PI / 180)396				},397				angle: angle,398				radius: 1 / 20,399				remainingLifetime: 1.0400			};401			ufoProjectiles[nextUFOProjectileId++] = ufoProjectile;402			for (let clientId in activeClients) {403				activeClients[clientId].socket.emit('new-ufo-projectile', ufoProjectile);404			}405		}406	}407	if (Object.keys(activeClients).length > 0) {408		if (timeUntilNextUFO > 0 && Object.keys(ufos).length < MAX_UFOS) {409			timeUntilNextUFO -= elapsedTime / 1000;410		}411		if (timeUntilNextUFO <= 0) {412			let newUfo = createUFO();413			for (let id in activeClients) {414				activeClients[id].socket.emit('new-ufo', newUfo);415			}416			timeUntilNextUFO += UFO_COUNTDOWN;417		}418	}419};420function respawn(playerId) {421	let respawnPoint = findSafePoint();422	activeClients[playerId].player.position.x = respawnPoint.x;423	activeClients[playerId].player.position.y = respawnPoint.y;424	activeClients[playerId].player.velocity.x = 0;425	activeClients[playerId].player.velocity.y = 0;426	activeClients[playerId].player.angle = Math.random() * 360;427	let respawnData = {428		id: playerId,429		position: activeClients[playerId].player.position,430		angle: activeClients[playerId].player.angle431	};432	activeClients[playerId].socket.emit('respawn-self', respawnData);433	for (let otherId in activeClients) {434		if (otherId !== playerId) {435			activeClients[otherId].socket.emit('respawn-other', respawnData);436		}437	}438}439function detectCollisions() {440	for (let asteroidId in asteroids) {441		// Asteroid - player collisions.442		for (let playerId in activeClients) {443			if (activeClients[playerId].player.alive) {444				if (Math.pow(activeClients[playerId].player.position.x - asteroids[asteroidId].position.x, 2) +445					Math.pow(activeClients[playerId].player.position.y - asteroids[asteroidId].position.y, 2) <=446					Math.pow(activeClients[playerId].player.radius + asteroids[asteroidId].radius, 2)) {447					activeClients[playerId].player.destroy(() => respawn(playerId));448					let scoreChange = -100449					activeClients[playerId].player.addToScore(scoreChange);450					activeClients[playerId].socket.emit('crash-self', {451						score: scoreChange452					});453					for (let otherId in activeClients) {454						if (otherId !== playerId) {455							activeClients[otherId].socket.emit('crash-other', {456								id: playerId,457								score: scoreChange458							});459						}460					}461				}462			}463		}464		// Asteroid - UFO collisions.465		for (let ufoId in ufos) {466			if (Math.pow(ufos[ufoId].position.x - asteroids[asteroidId].position.x, 2) +467				Math.pow(ufos[ufoId].position.y - asteroids[asteroidId].position.y, 2) <=468				Math.pow(asteroids[asteroidId].radius + ufos[ufoId].radius, 2)) {469				delete ufos[ufoId];470				for (let id in activeClients) {471					activeClients[id].socket.emit('ufo-destroyed', {472						ufoId: ufoId473					});474				}475			}476		}477		let asteroidDestroyed = false;478		// Asteroid - projectile collisions.479		for (let projectileId in projectiles) {480			if (Math.pow(projectiles[projectileId].position.x - asteroids[asteroidId].position.x, 2) +481				Math.pow(projectiles[projectileId].position.y - asteroids[asteroidId].position.y, 2) <=482				Math.pow(asteroids[asteroidId].radius + projectiles[projectileId].radius, 2)) {483				playerAsteroidHit(asteroidId, projectileId);484				asteroidDestroyed = true;485				break;486			}487		}488		if (!asteroidDestroyed) {489			// Asteroid - ufoProjectile collisions.490			for (let ufoProjectileId in ufoProjectiles) {491				if (Math.pow(ufoProjectiles[ufoProjectileId].position.x - asteroids[asteroidId].position.x, 2) +492					Math.pow(ufoProjectiles[ufoProjectileId].position.y - asteroids[asteroidId].position.y, 2) <=493					Math.pow(asteroids[asteroidId].radius + ufoProjectiles[ufoProjectileId].radius, 2)) {494					ufoAsteroidHit(asteroidId, ufoProjectileId);495					break;496				}497			}498		}499	}500	for (let ufoId in ufos) {501		// UFO - player collisions. (only player dies).502		for (let playerId in activeClients) {503			if (activeClients[playerId].player.alive) {504				if (Math.pow(activeClients[playerId].player.position.x - ufos[ufoId].position.x, 2) +505					Math.pow(activeClients[playerId].player.position.y - ufos[ufoId].position.y, 2) <=506					Math.pow(activeClients[playerId].player.radius + ufos[ufoId].radius, 2)) {507					activeClients[playerId].player.destroy(() => respawn(playerId));508					let scoreChange = -100509					activeClients[playerId].player.addToScore(scoreChange);510					activeClients[playerId].socket.emit('crash-self', {511						score: scoreChange512					});513					for (let otherId in activeClients) {514						if (otherId !== playerId) {515							activeClients[otherId].socket.emit('crash-other', {516								id: playerId,517								score: scoreChange518							});519						}520					}521				}522			}523		}524		// UFO - projectile collisions.525		for (let projectileId in projectiles) {526			if (Math.pow(projectiles[projectileId].position.x - ufos[ufoId].position.x, 2) +527				Math.pow(projectiles[projectileId].position.y - ufos[ufoId].position.y, 2) <=528				Math.pow(ufos[ufoId].radius + projectiles[projectileId].radius, 2)) {529				ufos[ufoId].remainingHealth -= 1;530				if (ufos[ufoId].remainingHealth <= 0) {531					delete ufos[ufoId];532					let score = 500;533					if (activeClients.hasOwnProperty(projectiles[projectileId].playerId)) {534						activeClients[projectiles[projectileId].playerId].player.addToScore(score);535					}536					for (let id in activeClients) {537						activeClients[id].socket.emit('ufo-destroyed', {538							ufoId: ufoId,539							projectileId: projectileId,540							score: score541						});542					}543				} else {544					for (let id in activeClients) {545						activeClients[id].socket.emit('ufo-hit', {546							ufoId: ufoId,547							projectileId: projectileId548						});549					}550				}551				delete projectiles[projectileId];552				break;553			}554		}555	}556	for (let playerId in activeClients) {557		if (activeClients[playerId].player.alive) {558			// Player - ufoProjectile collisions.559			for (let ufoProjectileId in ufoProjectiles) {560				if (Math.pow(activeClients[playerId].player.position.x - ufoProjectiles[ufoProjectileId].position.x, 2) +561					Math.pow(activeClients[playerId].player.position.y - ufoProjectiles[ufoProjectileId].position.y, 2) <=562					Math.pow(activeClients[playerId].player.radius + ufoProjectiles[ufoProjectileId].radius, 2)) {563					activeClients[playerId].player.destroy(() => respawn(playerId));564					let scoreChange = -100565					activeClients[playerId].player.addToScore(scoreChange);566					activeClients[playerId].socket.emit('crash-self', {567						score: scoreChange568					});569					for (let otherId in activeClients) {570						if (otherId !== playerId) {571							activeClients[otherId].socket.emit('crash-other', {572								id: playerId,573								score: scoreChange574							});575						}576					}577				}578			}579		}580	}581}582function update(elapsedTime) {583	for (let id in activeClients) {584        activeClients[id].player.update(elapsedTime);585		if (activeClients[id].player.alive) {586	        if (activeClients[id].player.position.x < bounds.x.lower - activeClients[id].player.radius ||587	        	activeClients[id].player.position.x > bounds.x.upper + activeClients[id].player.radius ||588	        	activeClients[id].player.position.y < bounds.y.lower - activeClients[id].player.radius ||589	        	activeClients[id].player.position.y > bounds.y.upper + activeClients[id].player.radius) {590				activeClients[id].player.destroy(() => respawn(id));591				let scoreChange = -100;592				activeClients[id].player.addToScore(scoreChange);593				activeClients[id].socket.emit('lost-self', {594					score: scoreChange595				});596				for (let otherId in activeClients) {597					if (otherId !== id) {598						activeClients[otherId].socket.emit('lost-other', {599							id: id,600							score: scoreChange601						})602					}603				}604			}605		}606    }607    updateAsteroids(elapsedTime);608    updateProjectiles(elapsedTime);609    updateUFOProjectiles(elapsedTime);610    updateUFOs(elapsedTime);611    detectCollisions();612}613function updateClients(elapsedTime) {614	for (let id in activeClients) {615		if (activeClients[id].player.reportUpdate) {616			let update = {617				id: id,618				position: activeClients[id].player.position,619				velocity: activeClients[id].player.velocity,620				angle: activeClients[id].player.angle,621				lastMessageId: activeClients[id].player.lastMessageId,622				updateWindow: elapsedTime623			}624			activeClients[id].socket.emit('update-self', update);625			for (let otherId in activeClients) {626				if (otherId !== id) {627					activeClients[otherId].socket.emit('update-other', update);628				}629			}630			activeClients[id].player.reportUpdate = false;631		}632	}633	lastUpdateTime = present();634}635function gameLoop(currentTime, elapsedTime) {636    processInput();637    update(elapsedTime);638    updateClients(elapsedTime);639    if (!quit) {640        setTimeout(() => {641            let now = present();642            gameLoop(now, now - currentTime);643        }, UPDATE_RATE_MS);644    }645}646const safePointGridWidth = 5;647const safePointGridHeight = 5;648function findSafePoint() {649	let bestX = null;650	let bestY = null;651	let maxDist = 0;652	for (let i = 0; i < safePointGridHeight; i++) {653		let y = (i + 1) * (bounds.y.upper - bounds.y.lower) / (safePointGridHeight + 1);654		for (let j = 0; j < safePointGridWidth; j++) {655			let x = (j + 1) * (bounds.x.upper - bounds.x.lower) / (safePointGridWidth + 1);656			let minDistSquared = Infinity;657			for (let asteroidId in asteroids) {658				let distSquared = Math.pow(x - asteroids[asteroidId].position.x, 2) + Math.pow(y - asteroids[asteroidId].position.y, 2);659				if (distSquared < minDistSquared) {660					minDistSquared = distSquared;661				}662			}663			if (minDistSquared > maxDist) {664				maxDist = minDistSquared;665				bestX = x;666				bestY = y;667			}668		}669	}670	return { x: bestX, y: bestY };671}672// function saveHighScores() {673// 	fs.readFile(HIGH_SCORES_FILE_NAME, (err, data) => {674// 		let scoresList = [];675// 		if (err === null) {676// 			scoresList = JSON.parse(data);677// 		}678// 		for (let id in activeClients) {679// 			scoresList.push({680// 				name: activeClients[id].player.name,681// 				score: activeClients[id].player.score682// 			});683// 		}684// 		scoresList.sort((a, b) => { return b.score - a.score });685// 		while (scoresList.length > MAX_HIGH_SCORES) {686// 			scoresList.pop();687// 		}688// 		fs.writeFile(HIGH_SCORES_FILE_NAME, JSON.stringify(scoresList), (err) => {689// 			if (err) throw err;690// 			console.log('High scores saved');691// 		})692// 	});693// }694function saveScoreAndQuit(playerId) {695	fs.readFile(HIGH_SCORES_FILE_NAME, (err, data) => {696		let scoresList = [];697		if (err === null && data.length > 0) {698			scoresList = JSON.parse(data);699		}700		let score = {701			name: activeClients[playerId].player.name,702			score: activeClients[playerId].player.score703		};704		scoresList.push(score);705		scoresList.sort((a, b) => { return b.score - a.score });706		while (scoresList.length > MAX_HIGH_SCORES) {707			scoresList.pop();708		}709		fs.writeFile(HIGH_SCORES_FILE_NAME, JSON.stringify(scoresList), (err) => {710			if (err) throw err;711			console.log('High scores saved');712		});713		let index = scoresList.findIndex((i) => i === score);714		if (index !== -1) {715			// New high score (top 10)716		    activeClients[playerId].socket.emit('leave-ack', {717		    	record: index718		    });719		} else {720		    activeClients[playerId].socket.emit('leave-ack', {});721		}722		delete activeClients[playerId];723	    for (let id in activeClients) {724			activeClients[id].socket.emit('leave-other', {725				id: playerId726			});727	    }728		729	    if (Object.keys(activeClients).length === 0) {730	    	console.log('Ending game...');731	    	asteroids = {};732	    	projectiles = {};733	    	ufos = {};734	    	ufoProjectiles = {};735	    }736	});737}738function initialize(server) {739	let io = require('socket.io')(server);740	io.on('connection', function(socket) {741	    console.log('Client connected');742	    socket.emit('connect-ack', {});743	    clients[socket.id] = {744	    	id: socket.id,745	    	socket: socket,746	    	player: null,747	    	lastMessageId: 0748	    };749	    socket.on('join', function(data) {750	    	if (Object.keys(activeClients).length == 0) {751	    		console.log('Starting game...');752	    		initializeAsteroids();753	    		timeUntilNextUFO = UFO_COUNTDOWN;754	    		timeUntilNextAsteroid = ASTEROID_COUNTDOWN;755	    	}756	    	let startPoint = findSafePoint();757		    let player = Player.create(data.name, startPoint.x, startPoint.y);758		    clients[socket.id].player = player;759		    activeClients[socket.id] = clients[socket.id];760		    socket.emit('join-ack', {761		    	id: socket.id,762		    	name: player.name,763		    	position: player.position,764		    	velocity: player.velocity,765		    	angle: player.angle,766		    	radius: player.radius,767		    	asteroids: asteroids,768		    	projectiles: projectiles,769		    	ufos: ufos,770		    	bounds: bounds771		    });772		    for (let id in activeClients) {773		    	if (socket.id !== id) {774		    		activeClients[id].socket.emit('join-other', {775		    			id: socket.id,776		    			name: player.name,777		    			position: player.position,778		    			velocity: player.velocity,779		    			angle: player.angle,780		    			radius: player.radius,781		    			alive: player.alive,782		    			score: player.score783		    		});784		    		socket.emit('join-other', {785		    			id: id,786	    				name: activeClients[id].player.name,787		    			position: activeClients[id].player.position,788		    			velocity: activeClients[id].player.velocity,789		    			angle: activeClients[id].player.angle,790		    			radius: activeClients[id].player.radius,791		    			alive: activeClients[id].player.alive,792		    			score: activeClients[id].player.score793		    		});794		    	}795		    }796	    });797	    socket.on('input', function(data) {798	    	inputQueue.push({799                id: socket.id,800                data: data,801                receiveTime: present()802            });803	    });804	    socket.on('leave', function(data) {805	    	saveScoreAndQuit(socket.id);806	    });807	    socket.on('get-high-scores', function() {808	    	fs.readFile(HIGH_SCORES_FILE_NAME, (err, data) => {809				let scoresList = [];810				if (err === null) {811					scoresList = JSON.parse(data);812				}813				socket.emit('high-scores', { highScores: scoresList, maxHighScores: MAX_HIGH_SCORES });814			});815	    });816	    socket.on('disconnect', function() {817	        console.log('Client disconnected');818	        if (activeClients.hasOwnProperty(socket.id)) {819		        for (let id in activeClients) {820			    	if (socket.id !== id) {821			    		activeClients[id].socket.emit('leave-other', {822			    			id: socket.id823			    		});824		    		}825			    }826			}827	        delete activeClients[socket.id];828	        if (Object.keys(activeClients).length === 0) {829	        	console.log('Ending game...');830	        	asteroids = {};831	        	projectiles = {};832	        	ufos = {};833	        	ufoProjectiles = {};834	        }835	    });836	});837    gameLoop(present(), 0);838}...

index.js

Source:index.js

1// ENUM CODES - to be synced with client2var ENUM_CODES = {3    LOGIN: { SUCCESS: 0, EXISTING_NAME: 1, ALREADY_LOGGED_IN: 2, INVALID_NAME: 3, ERROR: 4 },4    STATUS: { IDLE: 0, PLAYING: 1}5};6var express = require('express');7var app = express();8var server = require('http').createServer(app);9var io = require('socket.io')(server);10var port = process.env.PORT || 8082;11 12server.listen(port, function () {13    console.log('Server listening at port %d', port);14});15app.use(express.static(__dirname + '/public'));16// Server side settings for the client17var serverSettings = { gridCount: {w: 32, h: 32}, gridSize: {w: 100, h: 100}, gridCentre: {x: 0, y: 0}, speedMod: 4, tick: 0.03, tickMS: 1, initPlyRadius: 24 };18serverSettings.totalSize = { w: serverSettings.gridCount.w*serverSettings.gridSize.w, h: serverSettings.gridCount.h*serverSettings.gridSize.h };19serverSettings.gridCentre = { x: serverSettings.totalSize.w*-0.5, y: serverSettings.totalSize.h*-0.5 };20serverSettings.tickMS = serverSettings.tick * 1000;21  22// Rolling client counter and store for all client objects23var idCounter = 1;24var activeClients = [];25// Food pellets26var foodPellets = [];27var activePellets = 256;28function generatePellet() { return {pos: {x: Math.floor(Math.random()*serverSettings.totalSize.w + serverSettings.gridCentre.x), y: Math.floor(Math.random()*serverSettings.totalSize.h + serverSettings.gridCentre.y)}}; }29for (var i = 0; i < activePellets; i++) {30    foodPellets.push(generatePellet());31}32// Convert a HSV colour to RGB colour space33function HSVtoRGB(h, s, v) {34    var r, g, b, i, f, p, q, t;35    if (arguments.length === 1) {36        s = h.s, v = h.v, h = h.h;37    }38    i = Math.floor(h * 6);39    f = h * 6 - i;40    p = v * (1 - s);41    q = v * (1 - f * s);42    t = v * (1 - (1 - f) * s);43    switch (i % 6) {44        case 0: r = v, g = t, b = p; break;45        case 1: r = q, g = v, b = p; break;46        case 2: r = p, g = v, b = t; break;47        case 3: r = p, g = q, b = v; break;48        case 4: r = t, g = p, b = v; break;49        case 5: r = v, g = p, b = q; break;50    }51    return {52        r: Math.round(r * 255),53        g: Math.round(g * 255),54        b: Math.round(b * 255)55    };56}57// Log the message along side the client's unique address information58function log (clientAddress, message) {59    console.log(clientAddress.remoteAddress + ":" + clientAddress.remotePort + " > " + message);60}61function lerp (value, targetValue, fraction) { return value + (targetValue - value) * fraction; }62// Clamp the value inbetween the max and min parameters63function clamp (value,max,min) { 64    if (value < min) { return min; }65    else if (value > max) { return max; }66    return value;67}68// Clamp the incoming position to within the server's world bounds69function clampToBounds (pos) { 70    pos.x = clamp(pos.x, -serverSettings.gridCentre.x, serverSettings.gridCentre.x);71    pos.y = clamp(pos.y, -serverSettings.gridCentre.y, serverSettings.gridCentre.y);72    return pos;73}74// Function to be ran every tick of the server, for performing physics updates75function serverTick () {76    for (var i = 0; i < activeClients.length; i++) {77        if (activeClients[i].alive) {78            activeClients[i].vel.x *= 0.9; activeClients[i].vel.y *= 0.9;79            if (activeClients[i].mPressed) {80                activeClients[i].vel.x += activeClients[i].accel.x * serverSettings.tick * 384;81                activeClients[i].vel.y += activeClients[i].accel.y * serverSettings.tick * 384;82            }83            var tmpMult = (0.3 + (1/((activeClients[i].smoothedRadius - serverSettings.initPlyRadius + 5) / 5))*0.7);84            activeClients[i].pos.x += activeClients[i].vel.x * serverSettings.tick * serverSettings.speedMod * tmpMult;85            activeClients[i].pos.y += activeClients[i].vel.y * serverSettings.tick * serverSettings.speedMod * tmpMult;86            activeClients[i].pos = clampToBounds(activeClients[i].pos);87            activeClients[i].smoothedRadius = lerp (activeClients[i].smoothedRadius, activeClients[i].radius, 0.25);88            // Check if player collided with food pellets89            for (var j = 0; j < foodPellets.length; j++) {90                var dist = Math.sqrt(Math.pow(foodPellets[j].pos.x - activeClients[i].pos.x,2) + Math.pow(foodPellets[j].pos.y - activeClients[i].pos.y,2));91                if (dist < 8 + activeClients[i].radius) {92                    foodPellets[j] = generatePellet();93                    for (var k = 0; k < activeClients.length; k++) {94                        activeClients[k].new_pellets.push({index: j, pos: foodPellets[j].pos});95                    }96                    activeClients[i].radius += 2;97                }98            }99            // Check if player collided with another player100            for (var j = 0; j < activeClients.length; j++) {101                if (i != j && activeClients[i].alive && activeClients[j].alive) {102                    var dist = Math.sqrt(Math.pow(activeClients[j].pos.x - activeClients[i].pos.x,2) + Math.pow(activeClients[j].pos.y - activeClients[i].pos.y,2)) - activeClients[i].radius - activeClients[j].radius;103                    if (dist <= 0) {104                        var winningIndex, losingIndex;105                        if (activeClients[i].radius > activeClients[j].radius) { winningIndex = i; losingIndex = j; }106                        else { winningIndex = j; losingIndex = i; }107                        activeClients[winningIndex].radius += activeClients[losingIndex].radius * 0.75;108                        activeClients[losingIndex].alive = false;109                    }110                }111            }112        }113    }114}115// Call the server tick function after the value in the server settings has elapsed116setInterval(serverTick, serverSettings.tickMS);117// Function used to update every client with all the current players names and colours118function syncConstPlyData () {119    var syncData = {};120    for (var i = 0; i < activeClients.length; i++) {121        syncData[activeClients[i].id] = {hue: activeClients[i].hue, nickname: activeClients[i].nickname };122    }123    io.sockets.emit('sync_const_data', syncData);124}125// Upon a use connecting126io.on('connection', function (socket) {127    var broadcastTimer;128    var clientAddress = socket.request.connection;129    var clientData;130    socket.emit('server_settings', {settings: serverSettings, enums: ENUM_CODES});131    socket.emit('server_message', { message: 'Welcome to Cheesy Agar!' });132    function broadcastPositionData () {133        var otherClientsData = [];134        for (var i = 0; i < activeClients.length; i++) {135            if (activeClients[i]) {136                if (activeClients[i].id != clientData.id) { otherClientsData.push({ id: activeClients[i].id, pos: activeClients[i].pos, vel: activeClients[i].vel, accel: activeClients[i].accel, mPressed: activeClients[i].mPressed, radius: activeClients[i].smoothedRadius }); }137            }138        }139        socket.emit('update', { othersData: otherClientsData, plyData: { pos: clientData.pos, vel: clientData.vel, radius: clientData.smoothedRadius, alive: clientData.alive }, pellets_created: clientData.new_pellets });140        clientData.new_pellets = [];141        if (!clientData.alive) {142            if (broadcastTimer) {143                clearInterval(broadcastTimer);144                for (var i = 0; i < activeClients.length; i++) {145                    if (activeClients[i].id == clientData.id) {146                        activeClients.splice(i, 1);147                        log(clientAddress, 'Client has disconnected, removing id = ' + clientData.id + ' nickname = ' + clientData.nickname);148                        socket.broadcast.emit('server_message', { message: clientData.nickname+' has disconnected' });149                        break;150                    }151                }152                //delete clientData;153            }154        }155    }156    log(clientAddress, 'Client has connected');157    // Provide the new client a unique id158    socket.on('login', function(data) {159        if (typeof clientData === 'undefined' || (clientData && !clientData.alive)) {160            if (data.nickname == '') {161                log(clientAddress, 'Attempted login with name = ' + data.nickname + ', but the name is invalid');162                socket.emit('login', { code: ENUM_CODES.LOGIN.INVALID_NAME });163            }164            else {165                var existing = false;166                for (var i = 0; i < activeClients.length; i++) {167                    if (activeClients[i].nickname == data.nickname) {168                        existing = true;169                        break;170                    }171                }172                if (!existing && data.nickname != '') { 173                    clientData = { id: idCounter, nickname: data.nickname, hue: 0, mPressed: false, pos: {x: 0, y: 0}, vel: {x: 0, y: 0}, accel: {x: 0, y: 0}, radius: 24, smoothedRadius: 0, new_pellets: [], alive: true };174                    clientData.hue = Math.random(); clientData.smoothedRadius = clientData.radius;175                    // Log the loggin message to the server's console, add the new client to the client array, increment the id counter, sync player data, send a server message to all clients176                    log(clientAddress, 'Client has logged in with nickname = ' + clientData.nickname + ', assigned id = ' + clientData.id);177                    socket.emit('login', { code: ENUM_CODES.LOGIN.SUCCESS, userId: clientData.id, nickname: clientData.nickname, hue: clientData.hue, foodPellets: foodPellets });178                    socket.broadcast.emit('server_message', { message: clientData.nickname+' has connected' });179                    activeClients.push(clientData);180                    idCounter++;181                    syncConstPlyData();182                    broadcastTimer = setInterval(broadcastPositionData, serverSettings.tickMS);183                }184                else {185                    log(clientAddress, 'Attempted login with name = ' + data.nickname + ', but it already exists');186                    socket.emit('login', { code: ENUM_CODES.LOGIN.EXISTING_NAME });187                }188            }189        }190        else {191            log(clientAddress, 'Attempted login with name = ' + data.nickname + ', but are already logged in');192            socket.emit('login', { code: ENUM_CODES.LOGIN.ALREADY_LOGGED_IN });193        }194    });195    // Collect client data and perform validation checks upon the data to ensure no tampering196    socket.on('update', function (data) {197        clientData.accel = data.accel;198        clientData.mPressed = data.mPressed;199        var accelMagnitude = Math.sqrt(Math.pow(clientData.accel.x,2) + Math.pow(clientData.accel.y,2));200        if (accelMagnitude > 1) {201            // Suppress warnings if only a little over the limit202            if (accelMagnitude > 1.01) {203                log(clientAddress, 'Warning, invalid accel player values! id: ' + clientData.id + ' speed: ' + accelMagnitude + ' x: ' + clientData.accel.x + ' y: ' + clientData.accel.y);204            }205            clientData.accel.x /= accelMagnitude;206            clientData.accel.y /= accelMagnitude;207        }208        for (var i = 0; i < activeClients.length; i++) {209            if (clientData && activeClients[i].id == clientData.id) {210                activeClients[i].accel = clientData.accel;211                activeClients[i].mPressed = clientData.mPressed;212                break;213            }214        }215    });216    // Upon client disconnect remove client217    socket.on('disconnect', function () {218        if (typeof clientData !== 'undefined') {219            for (var i = 0; i < activeClients.length; i++) {220                if (activeClients[i].id == clientData.id) {221                    activeClients.splice(i, 1);222                    log(clientAddress, 'Client has disconnected, removing id = ' + clientData.id + ' nickname = ' + clientData.nickname);223                    socket.broadcast.emit('server_message', { message: clientData.nickname+' has disconnected' });224                    break;225                }226            }227        } 228        else {229            log(clientAddress, 'Client has disconnected');230        }231    });...

listeners.js

Source:listeners.js

1var renderTargetsReqVar;2var renderOnRecordTargetsReqVar;34// Renders UI elements listed in 'renderWhileActiveclients', optionally doing5// another update round-trip to Pazpar2 when done.6function renderTargets(doRefresh) {7  // console.log('rendering ' + renderWhileActiveclients);8  var sourcecomp = document.getElementById("pz2watch:activeclientsField");9  jsf.ajax.request(sourcecomp, null, {10    render : renderWhileActiveclients11  });12  if (doRefresh) {13    // console.log('Will do another ajax request after a timeout in order to14    // render: pz2watch:activeclientsField');15    renderTargetsReqVar = setTimeout(function() {16      // console.log('Making request for pz2watch:activeclientsField');17      jsf.ajax.request(sourcecomp, null, {18        render : "pz2watch:activeclientsField"19      });20    }, 500);21  } else {22    // console.log("No further updates from server requested");23  }24}2526// Renders UI elements listed in 'renderWhileActiveclientsRecord', optionally27// doing28// another record request when done.29function renderOnRecordTargets(doRefresh) {30  // console.log('rendering ' + renderWhileActiveclientsRecord);31  var sourcecomp = document.getElementById("pz2watch:activeclientsFieldRecord");32  jsf.ajax.request(sourcecomp, null, {33    render : renderWhileActiveclientsRecord34  });35  if (doRefresh) {36    // console.log('Will do another ajax request after a timeout in order to37    // render: pz2watch:activeclientsFieldRecord');38    renderOnRecordTargetsReqVar = setTimeout(function() {39      // console.log('Making request for pz2watch:activeclientsFieldRecord');40      jsf.ajax.request(sourcecomp, null, {41        render : "pz2watch:activeclientsFieldRecord"42      });43    }, 1000);44  } else {45    // console.log("No further updates from server requested");46  }47}4849// Listens for browser initiated changes to 'window.location.hash' and sends 50// the hash key changes to the back-end, to have the back-end pull up a previous 51// Pazpar2 state.52// 53// See also: The field in pz2watch.xhtml, the StateListener function below,54// the method Pz2Bean.handleQueryStateChanges(), and the classes 55// Pazpar2State and StateManager for a complete picture of browser history 56// handling.57function windowlocationhashListener() {58  if (trackHistory) {59    60    var stateKey = document.getElementById("pz2watch:windowlocationhash");61    // console.log("browser hash update response detected.");62    // console.log("pz2watch:windowlocationhash: [" + stateKey.value + "]");63    // console.log("window.location.hash: [" + window.location.hash + "]");64    if (window.location.hash != stateKey.value) {  65      if (window.location.hash) {66        //console.log("updating pz2watch:windowlocationhash with new window.location.hash [" + window.location.hash + "]");67        stateKey.value = window.location.hash;68        //console.log("firing pz2watch:windowlocationhash onChange");69        stateKey.onchange();70      } else if (stateKey.value) {71        //console.log("updating window.location.hash with pz2watch:windowlocationhash  [" + stateKey.value + "]");72        window.location.hash = stateKey.value;73        //console.log("firing pz2watch:windowlocationhash onChange");74        stateKey.onchange();75      } 76    } else {77      //console.log("State hash already has the value of the new browser hash - not updating state hash");78    }79  }80}8182// Listens for ViewExpiredException message. Reloads the current page, stripped83// of84// it's jsessionid and hash content85function viewExpirationListener(data) {86  if (data.status === "success" && data.responseXML) {87    var errorElements = data.responseXML.getElementsByTagName("error-name");88    if (errorElements.length > 0) {89      var errorname = errorElements.item(0).textContent90          || errorElements.item(0).text;91      if (errorname === "class javax.faces.application.ViewExpiredException") {92        var newloc = window.location.protocol + "//" + window.location.host93            + window.location.pathname.replace(/;jsessionid.*/, '');94        alert('Sorry, this session has expired. A new one will be loaded.');95        window.location.replace(newloc);96      }97    }98  }99100}101102function errorListener(data) {103  // alert(data.toSource());104  if (data.source.name === "pz2watch:activeclientsField") {105    alert("This occurred when polling: ["106        + data.description107        + "]. The page could be in an inconsistent state after this. We apologize for the inconvenience.");108  } else {109    var pattern = /viewId.*could not be restored./;110    if (pattern.test(data.description)) {111      // ignore - caught by view expiration listener112    } else {113      alert("An error ["114          + data.errorName + ": " +data.description115          + "] was triggered by ["116          + data.source.name117          + "]. The page could be in an inconsistent state after this. We apologize for the inconvenience.");118    }119  }120}121122// Composite listener, invoking all field update listeners123function fieldUpdateListener(data) {124  if (data.status === "success") {125    var updates = data.responseXML.getElementsByTagName("update");126    for ( var i = 0, max = updates.length; i < max; i++) {127      var lsnri = fieldListeners.getListener(updates[i].getAttribute("id"));128      if (lsnri) {129        lsnri.invoke(updates[i]);130      }131    }132  }133}134135var Pz2listeners = function() {136  var lsnrs = {};137  this.addListener = function(key, lsnr) {138    lsnrs[key] = lsnr;139  };140  this.getListener = function(key) {141    return lsnrs[key];142  };143};144145var fieldListeners = new Pz2listeners();146147// Listens for back-end initiated changes to the state key and updates148// window.location.hash with changes, to record them in browsing history149var StateListener = function() {150  this.invoke = function(field) {151    var stateKeyDoc = StringtoXML(field.textContent || field.text);152    var stateKeyValue = stateKeyDoc.childNodes[0].getAttribute("value");153    // console.log('Received state key update from the back-end: ' + stateKeyValue);154    if (stateKeyValue !== window.location.hash) {155      window.location.hash = stateKeyValue;156      // console.log("Browsers hash (window.location.hash) updated with [" + stateKeyValue + "]");157    } else {158      // console.log("Browsers hash (window.location.hash) already has the value [" + stateKeyValue + "]");159    }160  };161};162163// Listens for updates to general 'activeclients' field, then invokes164// renderTargets165var ActiveclientsListener = function() {166  this.invoke = function(field) {167    var updateDoc = StringtoXML(field.textContent || field.text);168    var activeClientsValue = (updateDoc.childNodes[0].textContent || updateDoc.childNodes[0].text);169    // console.log('Activeclients response detected: ' + activeClientsValue);170    clearTimeout(renderTargetsReqVar);171    if (activeClientsValue > '0') {172      renderTargets(true);173    } else {174      renderTargets(false);175    }176  };177};178179// Listens for updates to record 'activeclients' field, then invokes180// renderOnRecordTargets181var ActiveclientsRecordListener = function() {182  this.invoke = function(field) {183    var updateDoc = StringtoXML(field.textContent || field.text);184    var activeClientsRecordValue = (updateDoc.childNodes[0].textContent || updateDoc.childNodes[0].text);185    // console.log('Activeclients response for record detected: ' + activeClientsRecordValue);186    clearTimeout(renderOnRecordTargetsReqVar);187    if (activeClientsRecordValue > '0') {188      renderOnRecordTargets(true);189    } else {190      // console.log('Active clients is 0, final rendering');191      renderOnRecordTargets(false);192    }193  };194};195196// Inserts field update listeners, state listeners, view expired listener197// into Ajax response handling198jsf.ajax.addOnEvent(fieldUpdateListener);199jsf.ajax.addOnEvent(viewExpirationListener);200jsf.ajax.addOnError(errorListener);201202function StringtoXML(text) {203  var doc;204  if (window.ActiveXObject) {205    doc = new ActiveXObject('Microsoft.XMLDOM');206    doc.async = false;207    doc.loadXML(text);208  } else {209    var parser = new DOMParser();210    doc = parser.parseFromString(text, 'text/xml');211  }212  return doc;213}214215// Sets up field update listeners216var setUpListeners = function() {217  // console.log("Starts tracking activeclientsField, for 'show' and 'record'");218  fieldListeners.addListener("pz2watch:activeclientsField",219      new ActiveclientsListener());220  fieldListeners.addListener("pz2watch:activeclientsFieldRecord",221      new ActiveclientsRecordListener());222  if (trackHistory) {223    // console.log("Starts tracking windowlocationhash field");224    fieldListeners.addListener("pz2watch:windowlocationhash",225        new StateListener());226    // console.log("Setting listener for browser onhashchange");227    window.onload = window.onhashchange = windowlocationhashListener;228  }
...

Using AI Code Generation

1var BestPractice = require('./BestPractice.js');2var bestPractice = new BestPractice();3var activeClients = bestPractice.activeClients();4console.log(activeClients);5var BestPractice = require('./BestPractice.js');6var bestPractice = new BestPractice();7var activeClients = bestPractice.activeClients();8console.log(activeClients);9var BestPractice = function() {10    this.activeClients = function() {11        return "1,000,000";12    }13}14module.exports = BestPractice;15var Service = require('node-windows').Service;16var svc = new Service({17});18svc.on('install',function(){19  svc.start();20});21svc.install();

Using AI Code Generation

1var BestClient = require('./bestClient');2var testClient = new BestClient();3var testClient2 = new BestClient();4var testClient3 = new BestClient();5testClient.activeClients();6testClient2.activeClients();7testClient3.activeClients();8testClient.activeClients();9testClient2.activeClients();10testClient3.activeClients();11testClient.activeClients();12testClient2.activeClients();13testClient3.activeClients();14testClient.activeClients();15testClient2.activeClients();16testClient3.activeClients();17var BestClient = function () {18    this.activeClients = function () {19        console.log('Active clients are ' + BestClient.activeClientsCount);20    }21}22BestClient.activeClientsCount = 0;23BestClient.prototype = {24    addClient: function () {25        BestClient.activeClientsCount++;26    }27}28module.exports = BestClient;29var BestClient = require('./bestClient');30var testClient = new BestClient();31var testClient2 = new BestClient();

Using AI Code Generation

1var BestFit = require('./BestFit.js');2var bestFit = new BestFit();3    {name: 'client1', size: 100},4    {name: 'client2', size: 200},5    {name: 'client3', size: 50},6    {name: 'client4', size: 100},7    {name: 'client5', size: 200},8    {name: 'client6', size: 50},9    {name: 'client7', size: 100},10    {name: 'client8', size: 200},11    {name: 'client9', size: 50},12    {name: 'client10', size: 100},13    {name: 'client11', size: 200},14    {name: 'client12', size: 50},15    {name: 'client13', size: 100},16    {name: 'client14', size: 200},17    {name: 'client15', size: 50},18    {name: 'client16', size: 100},19    {name: 'client17', size: 200},20    {name: 'client18', size: 50},21    {name: 'client19', size: 100},22    {name: 'client20', size: 200},23    {name: 'client21', size: 50},24    {name: 'client22', size: 100},25    {name: 'client23', size: 200},26    {name: 'client24', size: 50},27    {name: 'client25', size: 100},28    {name: 'client26', size: 200},29    {name: 'client27', size: 50},30    {name: 'client28', size: 100},31    {name: 'client29', size: 200},32    {name: 'client30', size: 50},33    {name: 'client31', size: 100},34    {name: 'client32', size: 200},35    {name: 'client33', size: 50},36    {name: 'client34', size: 100},37    {name: 'client35', size: 200},38    {name: 'client36', size: 50},39    {name: 'client37

Using AI Code Generation

1var best = require('bestjs');2var client = new best.Client();3client.connect('localhost', 8080, function() {4    client.activeClients(function(err, clients) {5        if (err) {6            console.log(err);7        } else {8            console.log(clients);9        }10    });11});12var best = require('bestjs');13var client = new best.Client();14client.connect('localhost', 8080, function() {15    client.activeClients(function(err, clients) {16        if (err) {17            console.log(err);18        } else {19            console.log(clients);20        }21    });22});23var best = require('bestjs');24var client = new best.Client();25client.connect('localhost', 8080, function() {26    client.activeClients(function(err, clients) {27        if (err) {28            console.log(err);29        } else {30            console.log(clients);31        }32    });33});34var best = require('bestjs');35var client = new best.Client();36client.connect('localhost', 8080, function() {37    client.activeClients(function(err, clients) {38        if (err) {39            console.log(err);40        } else {41            console.log(clients);42        }43    });44});45var best = require('bestjs');46var client = new best.Client();47client.connect('localhost', 8080, function() {48    client.activeClients(function(err, clients) {49        if (err) {50            console.log(err);51        } else {52            console.log(clients);53        }54    });55});56var best = require('bestjs');57var client = new best.Client();58client.connect('localhost', 8080, function() {59    client.activeClients(function(err, clients) {60        if (err) {61            console.log(err);62        } else {63            console.log(clients);64        }65    });66});67var best = require('bestjs');

Using AI Code Generation

1var BestTimeToCall = require("./BestTimeToCall.js");2var bestTimeToCall = new BestTimeToCall();3bestTimeToCall.addCall("Fred", "2013-03-02 08:00");4bestTimeToCall.addCall("Fred", "2013-03-02 09:00");5bestTimeToCall.addCall("Fred", "2013-03-02 10:00");6bestTimeToCall.addCall("Fred", "2013-03-02 11:00");7bestTimeToCall.addCall("Fred", "2013-03-02 12:00");8bestTimeToCall.addCall("Fred", "2013-03-02 13:00");9bestTimeToCall.addCall("Fred", "2013-03-02 14:00");10bestTimeToCall.addCall("Fred", "2013-03-02 15:00");11bestTimeToCall.addCall("Fred", "2013-03-02 16:00");12bestTimeToCall.addCall("Fred", "2013-03-02 17:00");13bestTimeToCall.addCall("Fred", "2013-03-02 18:00");14bestTimeToCall.addCall("Fred", "2013-03-02 19:00");15bestTimeToCall.addCall("Fred", "2013-03-02 20:00");16bestTimeToCall.addCall("Fred", "2013-03-02 21:00");17bestTimeToCall.addCall("Fred", "2013-03-02 22:00");18bestTimeToCall.addCall("Fred", "2013-03-02 23:00");19bestTimeToCall.addCall("Fred", "2013-03-03 00:00");20bestTimeToCall.addCall("Fred", "2013-03-03 01:00");21bestTimeToCall.addCall("Fred", "2013-03-03 02:00");22bestTimeToCall.addCall("Fred", "2013-03-03 03:00");23bestTimeToCall.addCall("Fred", "2013-03-03 04

Using AI Code Generation

1var config = require('./config.json');2var request = require('request');3var nodemailer = require('nodemailer');4var smtpTransport = require('nodemailer-smtp-transport');5var options = {6    headers: {7    }8};9function callback(error, response, body) {10    if (!error && response.statusCode == 200) {11        var info = JSON.parse(body);12        console.log(info.activeClients);13        if (info.activeClients > 100) {14            sendEmail();15        }16    }17}18function sendEmail() {19    var transporter = nodemailer.createTransport(smtpTransport({20        auth: {21        }22    }));23    var mailOptions = {24    };25    transporter.sendMail(mailOptions, function(error, info) {26        if (error) {27            console.log(error);28        } else {29            console.log('Email sent: ' + info.response);30        }31    });32}33request(options, callback);

Using AI Code Generation

1'use strict';2var bestbuy = require('bestbuy')('API_KEY');3bestbuy.activeClients('2015-01-01', function (err, data) {4    if (err) {5        console.log('Error: ' + err);6    } else {7        console.log('Active clients for 2015-01-01: ' + data);8    }9});10bestbuy.activeClients('2015-01-01', '2015-01-03', function (err, data) {11    if (err) {12        console.log('Error: ' + err);13    } else {14        console.log('Active clients for 2015-01-01 to 2015-01-03: ' + data);15    }16});

Using AI Code Generation

1var BestRoute = require('./BestRoute.js');2var br = new BestRoute();3var client = br.createClient();4var server = br.createServer();5br.createPath(client, server);6var route = br.activeClients(client, server);7console.log(route.path);8console.log(route.bandwidth);9console.log(route.bandwidth);10console.log(route.path);11console.log(route.path);12console.log(route.bandwidth);13console.log(route.bandwidth);14console.log(route.path);15console.log(route.path);16console.log(route.bandwidth);17console.log(route.bandwidth);18console.log(route.path);19console.log(route.path);20console.log(route.bandwidth);21console.log(route.bandwidth);22console.log(route.path);23console.log(route.path);24console.log(route.bandwidth);25console.log(route.bandwidth);26console.log(route.path);27console.log(route.path);28console.log(route.bandwidth);29console.log(route.bandwidth);30console.log(route.path);31console.log(route.path);32console.log(route.bandwidth);33console.log(route.bandwidth);34console.log(route.path);35console.log(route.path);36console.log(route.bandwidth);37console.log(route.bandwidth);38console.log(route.path);39console.log(route.path);40console.log(route.bandwidth);41console.log(route.bandwidth);42console.log(route.path);

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.