multiplayer-canvas/world/player.js

module.exports = class Player {
	constructor() {
		this.id = 0;
		this.socket = null;
		this.position = {x: 60, y: 60};
		this.velocity = {x: 0, y: 0};
		this.maxSpeed = 3;
		this.turnRate = Math.PI / 8;
		this.moveToTarget = false;
		this.targetDestination = {x: 60, y: 60};
		this.targetAngle = 0;
		this.angleRadians = 0;
		this.shipColor = null;
		this.playerName = "Player";
		this.shipColor = "#DD3333";
	}

	getData(keys) {
		var response = {};
		for(var i in keys) {
			if(this.hasOwnProperty(keys[i])) {
				response[keys[i]] = this[keys[i]];
			}
		}
		return response;
	}

	sendMessage(data) {
		data.timestamp = new Date().getTime();
		this.socket.sendUTF(JSON.stringify(data, null, "\t"));
	}

	update(delta) {
		//this.angleRadians = this.targetAngle;
		/*if(this.angleRadians != this.targetAngle) {
			if(this.angleRadians > this.targetAngle) {
				this.angleRadians += Math.min(this.angleRadians - this.targetAngle, -this.turnRate);
			}
			if(this.angleRadians < this.targetAngle) {
				this.angleRadians += Math.min(this.angleRadians + this.targetAngle, this.turnRate);
			}
		}*/
		if(this.moveToTarget) {
			if(this.targetDestination.x > this.position.x) { //we're moving right
				if(this.position.x + this.velocity.x * delta > this.targetDestination.x) {
					this.position.x = this.targetDestination.x;
					this.velocity.x = 0;
				} else {
					this.position.x += this.velocity.x * delta;
				}
			} else if(this.targetDestination.x < this.position.x) { //we're moving left
				if(this.position.x + this.velocity.x * delta < this.targetDestination.x) {
					this.position.x = this.targetDestination.x;
					this.velocity.x = 0;
				} else {
					this.position.x += this.velocity.x * delta;
				}
			} else {
				this.position.x += this.velocity.x * delta;
			}

			if(this.targetDestination.y > this.position.y) { //we're moving down
				if(this.position.y + this.velocity.y * delta > this.targetDestination.y) {
					this.position.y = this.targetDestination.y;
					this.velocity.y = 0;
				} else {
					this.position.y += this.velocity.y * delta;
				}
			} else if(this.targetDestination.y < this.position.y) { //we're moving up
				if(this.position.y + this.velocity.y * delta < this.targetDestination.y) {
					this.position.y = this.targetDestination.y;
					this.velocity.y = 0;
				} else {
					this.position.y += this.velocity.y * delta;
				}
			} else {
				this.position.y += this.velocity.y * delta;	
			}

			if(this.targetDestination.x == this.position.x && this.targetDestination.y == this.position.y) { //we're moving right
				this.moveToTarget = false;
				this.sendUpdate(this);
			}
		} else {
			this.position.x += this.velocity.x * delta;
			this.position.y += this.velocity.y * delta;	
		}
	}

	sendUpdate(sender) {
		var keys = ["id", "position", "velocity", "targetDestination", "shipColor", "moveToTarget", "targetAngle", "angleRadians", "playerName"];
		if(sender == this) {
			this.sendMessage({player: this.getData(keys)});
		} else {
			this.sendMessage({other: sender.getData(keys)});
		}
	}

	logout() {
		this.socket.close();
	}
};