Pong/public/data/scripts/ts/game_object.ts

class GameObject{

    id: string

    constructor(id: string){
        this.id = id
    }

    applyValues(state: Serialized.GameObject | {[key: string]: number}): void{
		let recurse = (objIn: any, objOut: any): void => {
			for (let p in objIn){
				if (typeof objIn[p] == 'object' && objIn[p] != null){
					if (!objOut[p]) objOut[p] = {};
					recurse(objIn[p], objOut[p])
				} else objOut[p] = objIn[p]
			}
		}
        recurse(state, this)
	}
}

class Ball extends GameObject{

	//Main class for the moving ball object and the gameboard

	//Settings
	settings: Settings.Ball

	//General
	color: Settings.Color
	runUp: RunUp
	runningUp: boolean
	timeAfterRunUp: number
	lastPlayerHit: Player
	collides: boolean

	//Position and dimensions
	pos: Vector
	radius: number

	//Movement
	vel: Vector
	acc: Vector
	maxAcc: number
	permaAcc: number
	nextStep: Vector

	constructor(settings: Settings.Ball, id: string){
		super(id)
		this.settings = settings
		this.initSetup(true)
	}

	get canCollide(): boolean{
		return this.dist(p.width / 2, p.height / 2) > this.settings.safeRadius
	}

	get future(): Ball{
		let future = this.copy()
		future.move()
		return future
	}

	get nextPosition(): Vector{
		let future = this.pos.copy()
		future.add(this.vel)
		return future
	}

	get downSide(): number{return this.pos.y + this.radius}

	get upSide(): number{return this.pos.y - this.radius}

	get leftSide(): number{return this.pos.x - this.radius}

	get rightSide(): number{return this.pos.x + this.radius}

	get centerX(): number{return this.pos.x}

	get centerY(): number{return this.pos.y}

	get size(): number{return this.radius * 2}

	static fromSerialized(ball: Serialized.GameObject, settings: Settings.Ball): Ball{
		let b = new Ball(settings, ball.id)
		b.applyValues(ball)
		return b
	}

	initSetup(hardReset: boolean): void{
		let s = this.settings
		this.setup(s.radius, s.velocity, s.acceleration, s.runUp, s.color, hardReset)
	}

	setup(r: number, v: Settings.Ball.Velocity, a: Settings.Ball.Acceleration, s: Settings.Ball.RunUp, c: Settings.Color, hardReset: boolean): void{
		this.pos = new Vector(p.width / 2, p.height / 2)
		this.acc = new Vector(0, 0)
		this.maxAcc = a.max
		this.permaAcc = a.permanent
		if (hardReset) this.vel = new Vector(0, v.start)
		else if (this.vel.mag() * v.resetMultiplier > v.min) this.vel.mult(v.resetMultiplier)
		this.radius = r
		this.color = c
		this.runUp = new RunUp(s, v)
		this.runningUp = true
	}

	reset(hardReset: boolean): void{
		this.initSetup(hardReset)
	}

	update(balls: Ball[], players: Player[],
		   boosts: Boost[], wormholes: Wormhole[], newBalls: NewBall[]): void{
		if (this.runningUp){
			this.runUp.update(this)
		} else {
			let items = (boosts as Item[]).concat(newBalls)
			this.collision(balls, players, items)
			this.checkWormholes(wormholes)
			this.move()
		}
	}

	move(){
		this.acc.limit(this.maxAcc)
		this.vel.addMag(this.permaAcc)
		this.vel.add(this.acc)
		if (this.nextStep){
			this.pos.add(this.nextStep)
			this.nextStep = null
		} else {
			this.pos.add(this.vel)
		}
		this.acc.mult(0)
	}

	applyForce(force: Vector){
		this.acc.add(force.div(this.radius))
	}

	checkWormholes(wormholes: Wormhole[]){
		for (let w of wormholes){
			w.attractBall(this)
		}
	}

	collision(balls: Ball[], players: Player[], items: Item[]): void{
		this.collides = false
		if (this.itemCollision(items)) return
		if (this.playerCollision(players)) return
		if (this.deadZoneCollision(players)) return
		if (this.wallCollision()) return
		if (this.ballCollision(balls)) return
	}

	itemCollision(items: Item[]): boolean{
		let item = this.touchesItems(items)
		if (item){

			//Add new Item interactions with ball collision here
			if (item instanceof Boost && this.lastPlayerHit) this.lastPlayerHit.applyBoost(item as Boost)
			if (item instanceof NewBall) game.balls.push(new Ball(this.settings, randomToken()))

			item.destroy()
			return true
		}
		return false
	}

	playerCollision(players: Player[]): boolean{
		let player = this.touchesPlayers(players)
		if (player){
			this.turnXY(player)
			this.lastPlayerHit = player
			return true
		}
		return false
	}

	deadZoneCollision(players: Player[]): boolean{
		for (let p of players){
			if (this.willBeInDeadZone(p) || this.isInDeadZone(p)){
				if (this.isInDeadZone(p)){
					p.lost(this)
					return true
				} else {
					this.moveIntoDeadZone(p)
				}
			}
		}
		return false
	}

	wallCollision(): boolean{
		if (this.willTouchWall() || this.touchesWall()){
			if (this.touchesWall()) {
				this.turnY()
				return true
			} else {
				this.moveOnWall()
			}
		}

		return false
	}

	ballCollision(balls: Ball[]): boolean{
		if (!this.canCollide) return false
		for (let b of balls){
			if (b.id === this.id || b.collides) continue
			if (this.willTouchBall(b) || this.touchesBall(b)){
				b.collides = true
				if (this.touchesBall(b)){
					this.performBallCollision(b)
					return true
				}
				this.moveOnBall(b)
			}
		}
		return false
	}

	touchesItems(items: Item[]): Item{
		for (let i of items){
			if (this.willTouchItem(i)){
				if (this.touchesItem(i)){
					return i
				}
			}
		}
		return null
	}

	touchesPlayers(players: Player[]): Player{
		for (let p of players){
			if (this.willTouchPlayer(p) || this.touchesPlayer(p)){
				if (this.touchesPlayer(p)){
					return p
				} else {
					this.moveOnPlayer(p)
				}
			}
		}
		return null
	}

	willTouchWall(): boolean{
		return this.future.touchesWall()
	}

	touchesWall(): boolean{
		return this.downSide >= p.height || this.upSide <= 0
	}

	posTouchesWall(pos: Vector): boolean{
		let copy = this.copy()
		copy.pos.x = pos.x
		copy.pos.y = pos.y
		return copy.downSide >= p.height || copy.upSide <= 0
	}

	moveOnWall(): void{
		let pos = this.pos.copy()
		let dir = new Vector(0, 0)
		let vel = Vector.fromAngle(this.vel.heading()).mult(0.5)
		while (!this.posTouchesWall(pos)){
			pos.add(vel)
			dir.add(vel)
			if (dir.mag() > this.vel.mag())
				break //error
		}
		if (!this.nextStep) this.nextStep = dir
	}

	willTouchItem(item: Item): boolean{
		let now = this.copy()
		let then = this.future
		let dist = Vector.sub(then.pos, now.pos).mag()
		let nowDist = 0
		while(nowDist <= dist){
			if (now.touchesItem(item)){
				return true
			}
			now.pos.addMag(1)
			nowDist++
		}
		return false
	}

	touchesItem(item: Item): boolean{
		let dist = this.dist(item.pos.x, item.pos.y)
		return dist <= this.radius + item.radius
	}

	willTouchPlayer(player: Player): boolean{
		return this.future.touchesPlayer(player.future)
	}

	touchesPlayer(player: Player): boolean{
		if (player.isLeft || player.isRight){
			for (let y = player.upSide; y <= player.downSide; y++){
				let touch = this.touchesPos(player.toGameSide, y)
				if (touch) return true
			}
		}
		if (player.isTop || player.isBottom){
			for (let x = player.leftSide; x <= player.rightSide; x++){
				let touch = this.touchesPos(x, player.toGameSide)
				if (touch) return true
			}
		}
		return false
	}

	posTouchesPlayer(pos: Vector, player: Player): boolean{
		if (player.isLeft || player.isRight){
			for (let y = player.upSide; y <= player.downSide; y++){
				if (p.dist(pos.x, pos.y, player.toGameSide, y) - this.radius <= 0.2) return true
			}
		}
		if (player.isTop || player.isBottom){
			for (let x = player.leftSide; x <= player.rightSide; x++){
				if (p.dist(pos.x, pos.y, x, player.toGameSide) - this.radius <= 0.2) return true
			}
		}
		return false
	}

	moveOnPlayer(player: Player): void{
		let pos = this.pos.copy()
		let dir = new Vector(0, 0)
		let vel = Vector.fromAngle(this.vel.heading()).mult(0.5)
		while (!this.posTouchesPlayer(pos, player)){
			pos.add(vel)
			dir.add(vel)
			if (dir.mag() > this.vel.mag())
				break //error
		}
		this.nextStep = dir
	}

	isInDeadZone(player: Player): boolean{
		if ((this.centerX < player.leftSide && player.isLeft ||
				this.centerX > player.rightSide && player.isRight)
			&& this.centerY > player.boxTopSide
			&& this.centerY < player.boxBottomSide){
			return true
		}
		if ((this.centerY < player.upSide && player.isTop ||
				this.centerY > player.downSide && player.isBottom)
			&& this.centerX > player.boxLeftSide
			&& this.centerX < player.boxRightSide){
			return true
		}
	}

	posIsInDeadZone(pos: Vector, player: Player): boolean{
		let copy = this.copy()
		copy.pos = pos.copy()
		if ((copy.centerX < player.leftSide && player.isLeft ||
				copy.centerX > player.rightSide && player.isRight)
			&& copy.centerY > player.boxTopSide
			&& copy.centerY < player.boxBottomSide){
			return true
		}
		if ((copy.centerY < player.upSide && player.isTop ||
				copy.centerY > player.downSide && player.isBottom)
			&& copy.centerX > player.boxLeftSide
			&& copy.centerX < player.boxRightSide){
			return true
		}
	}

	willBeInDeadZone(player: Player): boolean{
		return this.posIsInDeadZone(this.future.pos.copy(), player)
	}

	moveIntoDeadZone(player: Player): void{
		let pos = this.pos.copy()
		let dir = new Vector(0, 0)
		let vel = Vector.fromAngle(this.vel.heading()).mult(0.5)
		while (!this.posIsInDeadZone(pos, player)){
			pos.add(vel)
			dir.add(vel)
			if (dir.mag() > this.vel.mag())
				break //error
		}
		this.nextStep = dir
	}

	touchesBall(ball: Ball): boolean{
		return this.dist(ball.centerX, ball.centerY) <= this.radius + ball.radius
	}

	willTouchBall(ball: Ball): boolean{
		return this.future.touchesBall(ball.future)
	}

	moveOnBall(ball: Ball): void{
		let pos = this.pos.copy()
		let dir = new Vector(0, 0)
		let vel = Vector.fromAngle(this.vel.heading()).mult(0.5)
		while (!this.posTouchesBall(pos, ball)){
			pos.add(vel)
			dir.add(vel)
			if (dir.mag() > this.vel.mag())
				break //error
		}
		this.nextStep = dir
	}

	posTouchesBall(pos: Vector, ball: Ball): boolean{
		let b = this.copy()
		b.pos = pos.copy()
		return b.touchesBall(ball)
	}

	performBallCollision(ball: Ball): void{
		Collision.ellipseToEllipse(this, ball)
	}

	touchesPos(x: number, y: number): boolean{
		let d = this.dist(x, y)
		return d <= this.radius + 0.2
	}

	dist(x: number, y: number): number{
		return p.dist(x, y, this.centerX, this.centerY)
	}

	turnY(): void{
		this.vel.y *= -1
	}

	turnX(): void{
		this.vel.x *= -1
	}

	turnXY(player: Player): void{
		if (player.isLeft || player.isRight){
			this.turnX()

			// Number between -0.5 (ball on the top) and 0.5 (ball on the bottom of player)
			let divider = (this.centerY - (player.upSide - this.radius)) / (player.height + this.radius * 2) - 0.5

			this.vel.rotate((player.isLeft ? 1 : -1) * divider)
		}
		if (player.isTop || player.isBottom){
			this.turnY()

			// Number between -0.5 (ball on the left) and 0.5 (ball on the right of player)
			let divider = (this.centerX - (player.leftSide - this.radius)) / (player.width + this.radius * 2) - 0.5

			this.vel.rotate((player.isBottom ? 1 : -1) * divider)
		}
	}

	copy(): Ball{
		let ball = new Ball(this.settings, this.id)
		ball.pos = this.pos.copy()
		ball.vel = this.vel.copy()
		ball.nextStep = this.nextStep
		ball.radius = this.radius
		return ball
	}

	serialized(): Serialized.Ball{
		return {
			pos: this.pos.serialized(),
			vel: this.vel.serialized(),
			color: this.color,
			radius: this.radius,
			runningUp: this.runningUp,
			nextStep: this.nextStep,
			id: this.id
		}
	}

	show(): void{
		p.push()
		p.fill(this.color.fill)
		p.stroke(this.color.stroke)
		p.translate(this.centerX, this.centerY)
		p.strokeWeight(3)
		p.ellipse(0, 0, this.size, this.size)
		if (this.runningUp){
			p.stroke(0, 255, 0)
			p.fill(0, 100, 0)
			p.rotate(this.vel.heading())
			let mag = this.vel.mag() * 15
			p.strokeWeight(mag / 50)
			p.line(0, 0, mag, 0)
			p.triangle(mag, -mag / 8, mag, mag / 8, mag + mag / 4, 0)
		}
		p.pop()
	}

}

class RunUp{

	time: TimeProcess

	rVel = 0
	mVel = 0
	rAcc = 0
	mAcc = 0

	minVel: number
	maxVel: number

	constructor(s: Settings.Ball.RunUp, v: Settings.Ball.Velocity){
		this.time = new TimeProcess(Math.random() * (s.max - s.min) + s.min)
		this.minVel = v.min
		this.maxVel = v.runUpMax
	}

	update(b: Ball): void{
		this.time.update()

		this.mAcc = (Math.random() - 0.5) / 50
		this.rAcc = (Math.random() - 0.5) / 50
		if (Math.abs(this.mVel) < 0.5)
			this.mVel += this.mAcc
		if (Math.abs(this.rVel) < 0.1)
			this.rVel += this.rAcc
		if (b.vel.mag() < this.maxVel && b.vel.mag() > this.minVel)
			b.vel.addMag(this.mVel)
		b.vel.rotate(this.rVel)
		b.runningUp = !this.time.finished
		if (!b.runningUp){
			b.lastPlayerHit = null
		}
	}

}