function readGameSettings(){
    $('.setting').attr('disabled', false);

    let fieldSize = parseInt($('#fieldsize_select :selected').val());
    let turnTime = parseInt($('#turntime_select :selected').val());
    let mixed = $('#mixed_check').is(':checked');
    let silent = $('#silent_check').is(':checked');
    
    gameSettings.fieldSize = fieldSize;
    gameSettings.turnTime = turnTime;
    gameSettings.mixed = mixed;
    gameSettings.silent = silent;

    if (mixed){
        let maxIndex = fieldSize * fieldSize - 1;
        let indices = [];
        for (let i = 0; i < maxIndex * 0.1; i++){
            let index;
            do{
                index = Math.floor(p.random(0, maxIndex));
            } while (indices.find(i => i === index) != null);
            indices.push(index);
        }
        gameSettings.emptyFieldIndices = indices;
    }

    socket.emit('game-settings', gameSettings);
}

let gameSettings = {};

class Game{

    constructor(players){
        this.turn = '';
        this.playerHues = {'neutral': 0};
        this.fields = [];
        this.fieldCount = gameSettings.fieldSize;
        this.spreads = [];
        this.spreadsToRemove = [];
        this.bufferedSlots = [];

        let i = 0;
        for (let x = 0; x < this.fieldCount; x++){
            for (let y = 0; y < this.fieldCount; y++){
                let isEmpty = false;
                if (gameSettings.mixed)
                    isEmpty = gameSettings.emptyFieldIndices.find(ei => ei === i) != null;
                this.fields.push(new Field(x, y, this.fieldCount, isEmpty));
                i++;
            }
        }
        this.fields.forEach(f => f.setup(this.fields));

        this.leaderboard = new Leaderboard();
        this.countdown = new Countdown();

        this.fieldMarginFactor = 0.1;

        socket.on('player-colors', (lobby, colors) => this.setPlayerHues(colors));
        socket.on('current-turn', (lobby, turnId) => this.setTurnPlayer(lobby.clients.filter(c => c.isPlayer), turnId));
        socket.on('set-slot', (lobby, fieldsIndex, slotsIndex, id) => this.setSlot(fieldsIndex, slotsIndex, id));


        this.players = players;
    }

    get winCount(){
        return Math.round(this.fields.filter(f => !f.isEmpty).length * 0.7);
    }

    //Width and height of game field
    get size(){
        return Math.min(p.width, p.height - this.leaderboard.height);
    }

    //Upper left corner of game field
    get pos(){
        return {x: (p.width - this.size) / 2, y: (p.height + this.leaderboard.height - this.size) / 2};
    }

    get hasTurn(){
        return this.turn === socket.id
    }

    get isSpectator(){
        return this.players.find(p => p.id === socket.id) == null
    }

    get data(){
        let data = {
            pH: this.playerHues,
            f: []
        }
        this.fields.forEach((f, fi) => {
            if (!f.isNeutral){
                let slots = [];
                f.slots.forEach((s, si) => {
                    if (s.isFilled)
                        slots.push(si);
                });
                data.f.push({fi: fi, id: f.ownerId, sl: slots, ie: f.isEmpty});
            }
        });
        return data;
    }

    get players(){
        return this._players;
    }

    set players(players){
        this.leaderboard.setBarsFromPlayers(players);
        this._players = players;
        this.fields.forEach(f => {
            if (players.find(p => p.id === f.ownerId) == null && !f.isNeutral){
                f.slots.forEach(s => s.isFilled = false);
                f.ownerId = 'neutral';
            }
        });
    }

    setPlayerHues(colors){
        for (let key in colors){
            this.playerHues[key] = colors[key];
            let graphics = p.createGraphics(100, 100);
            graphics.colorMode(p.HSB);
            graphics.tint(colors[key], 100, 100);
            graphics.image(gemContentImage, 0, 0, 100, 100);
            gemContentGraphics[colors[key]] = graphics;
        }
    }

    display(){
        this.fields.forEach(f => f.display());
        this.spreads.forEach(s => s.display());

        this.leaderboard.display();
        this.countdown.display();
    }

    update(){
        this.spreads.forEach(s => s.update());
        this.spreads = this.spreads.filter((s, i) => this.spreadsToRemove.find(r => r === i) == null);
        if (!this.spreads.length && this.spreadsToRemove.length){
            this.sendReady();
        }

        this.spreadsToRemove = [];


        if (this.countdown.isFinished)
            this.skipTurn();

        if (!this.winId)
            this.checkWin();
    }

    skipTurn(){
        if (!this.countdown.isChecked && this.hasTurn && !this.doneTurn){
            this.countdown.isChecked = true;
            this.doneTurn = true;
            socket.emit('set-slot', null, null);
        }
    }

    checkWin(){
        this.players.forEach((p, i, a) => {
            let count = this.fields.filter(f => f.ownerId === p.id).length;
            if (count >= this.winCount || (a.length === 1 && !productionMode)){
                console.log('Player ' + p.name + ' (' + p.id + ') won the game!');
                this.winId = p.id;
                refreshGamePlayers(this.players);
                this.countdown.stop();
                //$('#play_again').show();
            }
        });
    }

    setTurnPlayer(players, turnId){
        this.turn = turnId;
        this.doneTurn = false;
        if (!this.winId)
            this.countdown.start();
        refreshGamePlayers(players);
    }

    setSlot(fieldIndex, slotIndex, id){
        if (fieldIndex == null || slotIndex == null){
            this.sendReady();
            return;
        }

        if (this.spreads.length){
            this.bufferedSlots.push({fieldIndex: fieldIndex, slotIndex: slotIndex, id: id});
            return;
        }

        if (id === socket.id)
            this.firstTurnMade = true
        this.fields.forEach(f => f.slots.forEach(s => s.isHighlighted = false));

        let slot = this.fields[fieldIndex].slots[slotIndex];
        slot.field.ownerId = id;
        slot.isFilled = true;

        if (this.players[0])
            if (socket.id === this.players[0].id)
                socket.emit('game-data', this.data)

        if (slot.field.allSlotsFilled){
            this.createSpreads(slot.field);
        } else {
            if (!gameSettings.silent)
                slot.isHighlighted = true;
            this.sendReady();
        }

        this.countdown.stop();
    }

    setAllSlots(data){
        data.f.forEach(f => {
            this.fields[f.fi].ownerId = f.id;
            this.fields[f.fi].isEmpty = f.ie;
            this.fields[f.fi].slots.forEach((s, i) => {
                if (f.sl.find(si => si === i) != null){
                    s.isFilled = true;
                }
            })
        });
        this.fields.forEach(f => {
            if (f.allSlotsFilled)
                this.createSpreads(f);
        });
    }

    sendReady(){
        if (this.bufferedSlots.length){
            let slot = this.bufferedSlots[0];
            this.bufferedSlots.splice(0, 1);
            this.setSlot(slot.fieldIndex, slot.slotIndex, slot.id);
        } else {
            let isDead = this.fields.filter(f => f.isMine).length === 0 && this.firstTurnMade;
            socket.emit('ready-for-turn', isDead);
        }
    }

    createSpreads(field){
        field.slots.forEach(s => {
            let spread = new Spread(s);
            this.spreads.push(spread);
        });
    }

    onMouseDown(){
        this.fields.filter(f => f.isMouseOver).forEach(f => f.onMouseDown());
    }

    onPlayerLeft(id){

    }
}

class Field{

    constructor(x, y, count, isEmpty){
        this.gridPos = {x: x, y: y};
        this.count = count;
        this.isEmpty = isEmpty;
        this.slots = [];
        this.ownerId = 'neutral';
    }

    get isTop(){
        return this.gridPos.y === 0;
    }

    get isRight(){
        return this.gridPos.x === this.count - 1;
    }

    get isBottom(){
        return this.gridPos.y === this.count - 1;
    }

    get isLeft(){
        return this.gridPos.x === 0;
    }

    get size(){
        return game.size / (game.fieldCount + (game.fieldCount + 1) * game.fieldMarginFactor);
    }

    get margin(){
        return game.fieldMarginFactor * this.size;
    }

    //Upper left corner of field
    get pos(){
        let x = game.pos.x + this.margin + this.gridPos.x * (this.size + this.margin);
        let y = game.pos.y + this.margin + this.gridPos.y * (this.size + this.margin);
        return {x: x, y: y};
    }

    get isMouseOver(){
        return p.mouseX > this.pos.x && p.mouseX < this.pos.x + this.size
            && p.mouseY > this.pos.y && p.mouseY < this.pos.y + this.size;
    }

    get isNeutral(){
        return this.ownerId === 'neutral';
    }

    get isEnemy(){
        return this.ownerId !== socket.id && !this.isNeutral;
    }

    get isMine(){
        return this.ownerId === socket.id;
    }

    get allSlotsFilled(){
        return this.slots.find(s => !s.isFilled) == null;
    }

    setup(allFields){
        if (!this.isEmpty){
            for (let angle = 0; angle < Math.PI * 2; angle += Math.PI / 2){
                let x = Math.round(Math.sin(angle));
                let y = Math.round(Math.cos(angle));
                if (this.getPartner(x, y, allFields))
                    this.slots.push(new Slot(x, y));
            }
            this.slots.forEach(s => s.field = this);
        }
    }

    getPartner(x, y, allFields){
        return allFields.find(f =>
            f.gridPos.x === this.gridPos.x + x &&
            f.gridPos.y === this.gridPos.y + y &&
            !f.isEmpty
        );
    }
    
    display(){

        if (!this.isEmpty){
            p.noStroke();
            p.fill(0, 0, 5);
            let size = this.size / 3;
            p.rect(this.pos.x + size, this.pos.y + size, size, size);
        }

        this.slots.forEach(s => s.display());

        let s = this.isNeutral ? 0 : 50;
        p.stroke(100);
        p.strokeWeight(1);
        p.fill(game.playerHues[this.ownerId], s, 60, 0.3);
        p.rect(this.pos.x, this.pos.y, this.size, this.size);
    }

    onMouseDown(){
        this.slots.filter(s => s.isMouseOver).forEach(s => s.onMouseDown());
    }

}

class Slot{

    constructor(x, y){
        this.gridPos = {x: x, y: y};
        this.field = null;
        this.isFilled = null;
        this.isHighlighted = false;
    }

    get size(){
        return this.field.size / 3;
    }

    //Upper left corner of slot
    get pos(){
        let x = this.field.pos.x + (this.gridPos.x + 1) * this.size;
        let y = this.field.pos.y + (this.gridPos.y + 1) * this.size;
        return {x: x, y: y};
    }

    get isMouseOver(){
        return p.mouseX > this.pos.x && p.mouseX < this.pos.x + this.size
            && p.mouseY > this.pos.y && p.mouseY < this.pos.y + this.size;
    }

    get color(){
        let h = game.playerHues[this.field.ownerId];
        let s = this.isFilled ? 100 : 0;
        let b = this.isMouseOver && !this.isFilled ? 90 : 70;
        return p.color(h, s, b);
    }

    get partner(){
        let fieldIndex = game.fields.findIndex(f =>
            f.gridPos.x === this.field.gridPos.x + this.gridPos.x &&
            f.gridPos.y === this.field.gridPos.y + this.gridPos.y
        );
        let slotIndex = game.fields[fieldIndex].slots.findIndex(s =>
            s.gridPos.x === -this.gridPos.x &&
            s.gridPos.y === -this.gridPos.y
        );
        return game.fields[fieldIndex].slots[slotIndex];
    }

    display(){

        p.fill(this.color);
        p.noStroke();
        p.rect(this.pos.x, this.pos.y, this.size, this.size);

        if (this.isFilled){
            p.stroke(0, 0, 0);
            p.strokeWeight(3);
            let x = this.pos.x + this.size / 2;
            let y = this.pos.y + this.size / 2;
            p.line(this.pos.x, y, this.pos.x + this.size, y);
            p.line(x, this.pos.y, x, this.pos.y + this.size);
        }

        if (this.isHighlighted){
            p.stroke(0);
            p.fill(0);
            let hs = this.size / 2;
            p.ellipse(this.pos.x + hs, this.pos.y + hs, hs, hs);
        }
    }

    onMouseDown(){
        if (!this.field.isEnemy && game.hasTurn && !game.doneTurn && !this.isFilled){
            let slotsIndex = this.field.slots.indexOf(this);
            let fieldsIndex = game.fields.indexOf(this.field);
            socket.emit('set-slot', fieldsIndex, slotsIndex);

            game.countdown.stop();
            game.doneTurn = true;
        }
    }
}

class Spread{

    constructor(slot){
        this.slot = slot;
        this.ownerId = slot.field.ownerId;
        this.color = slot.color;
        this.moveProgress = 0;
        this.waitTime = 0;
        this.moving = false;
    }

    get startPos(){
        let x = this.slot.field.pos.x + this.slot.size;
        let y = this.slot.field.pos.y + this.slot.size;
        return p.createVector(x, y);
    }

    get endPos(){
        let x = this.slot.partner.field.pos.x + this.slot.size;
        let y = this.slot.partner.field.pos.y + this.slot.size;
        return p.createVector(x, y);
    }

    get pos(){
        let step = this.smoothStep(0, 1, this.moveProgress);
        return p5.Vector.lerp(this.startPos, this.endPos, step);
    }

    get size(){
        return this.slot.size;
    }

    display(){

        p.noStroke();
        let x = this.pos.x + this.size / 2;
        let y = this.pos.y + this.size / 2;
        p.fill(0, 0, 0);
        p.ellipse(x, y, this.size * 0.9, this.size * 0.9);

        let c = p.frameCount % 10 >= 5 && !this.moving ? p.color(0, 0, 0) : this.color;
        p.fill(c);
        p.ellipse(x, y, this.size * 0.5, this.size * 0.5);
    }

    update(){
        this.waitTime += 1 / p.frameRate();
        if (this.waitTime >= 0.2 && !this.moving){
            this.moving = true;
            this.slot.isFilled = false;
            this.slot.field.ownerId = 'neutral';
        }
        if (this.moving){
            this.moveProgress += 1.5 / p.frameRate();
        }
        if (this.moveProgress >= 1)
            this.fillEndSlot();
    }

    fillEndSlot(){
        game.spreadsToRemove.push(game.spreads.indexOf(this));
        let endSlot = this.slot.partner;
        let buffered = false;
        if (endSlot.isFilled){
            if (endSlot.field.allSlotsFilled){
                buffered = true;
            } else 
                endSlot.field.slots.filter(s => !s.isFilled)[0].isFilled = true;
        } else {
            endSlot.isFilled = true;
        }
        endSlot.field.ownerId = this.ownerId;

        if (endSlot.field.allSlotsFilled && !buffered)
            game.createSpreads(endSlot.field);
    }



    smoothStep(start, end, t){
        function clamp(x, lowLimit, upLimit){
            if (x < lowLimit)
                x = lowLimit;
            if (x > upLimit)
                x = upLimit;
            return x;
        }
        t = clamp((t - start) / (end - start), 0, 1);
        return t * t * t * (t * (t * 6 - 15) + 10);
    }

}

class Countdown{

    constructor(){
        this.limit = new Date().getTime();
    }

    get time(){
        return (this.limit - new Date().getTime()) / 1000;
    }

    get isFinished(){
        return this.time <= 0;
    }

    display(){
        if (!this.isFinished){
            let panelW = (p.width - game.size) / 2;
            p.stroke(200);
            p.fill(150);
            p.textSize(panelW / 4);
            let x = panelW / 2;
            let y = game.pos.y + game.size / 2;
            let rounded = Math.floor(this.time);
            p.text(rounded, x, y);
        }
    }

    start(){
        this.limit = new Date().getTime() + gameSettings.turnTime * 1000;
        this.isChecked = false;
    }

    stop(){
        this.limit = 0;
    }

}