//sounds
var sound_thwip;
var sound_upg;
var sound_amb;

//constants
var WINDOW_WIDTH = 800;
var WINDOW_HEIGHT = 600;
var PLAYER_POSX = WINDOW_WIDTH / 2;
var PLAYER_POSY = WINDOW_HEIGHT / 2;
var MOVE_SPEED = 8;
var REFRESH_RATE = 15;
var FIRE_COOLDOWN = 15; //number of frames
var DRAW_COOLDOWN = 5;
var CARD_EXPIRATION_DATE = 100; //age at which thrown cards self-remove
var DEFAULT_CARD_SPEED = 12;
var FOUR_TIME = 3; //delay between shots
var NINE_TIME = 6;
var HEALTH_DRAIN = 0; //was 0.12

var KING_LIMIT = 1;
var QUEEN_LIMIT = 1;
var ROOK_LIMIT = 2;
var BISHOP_LIMIT = 2;
var KNIGHT_LIMIT = 2;
var PAWN_LIMIT = 8;

var KING_COST = 9;
var QUEEN_COST = 9;
var ROOK_COST = 5;
var BISHOP_COST = 3;
var KNIGHT_COST = 3;
var PAWN_COST = 1;

//variables
var credits = 0;
var muted = 0;

var move_left = 0;
var move_right = 0;
var move_up = 0;
var move_down = 0;
var offsetx = 0;
var offsety = 0;
var deltax = 0;
var deltay = 0;

var mousex = 0;
var mousey = 0;
var facing = 0;
var health = 100;

var heldcard = 15; //the first card is always the 2 of clubs
var number = 2;
var suit = 1;

var cooldown = 0;

var uid = 0;
var generate_num = 20; //encounter your first shrine sooner

//upgrade array
var deckupgrades = new Array(52);
for (var i = 0; i < 52; i++) {
    if (i % 13 >= 1 && i % 13 <= 4) {
        deckupgrades[i] = 1;
    } else {
        deckupgrades[i] = 0;
    }
}
var totalupgrades = 0;

//objects and arrays (mostly for web workers)
var newenemies = []; //array that contains pertinant stuff about all new enemies 
var deadenemies = []; //array of dead enemies returned from the web worker to be deleted 
var movedenemies = []; //array of moved enemies returned from the web worker 
var hitenemies = []; //array of enemies hit by a card
var message = { "newenemies": newenemies, "hitenemies": hitenemies};
var delayed_shots = [];

function startenemyWorker() {
    if (typeof (Worker) !== "undefined") {
        if (typeof (w) == "undefined") {
            w = new Worker("enemyWorker.js"); //defining file that will run on new thread
        }
        w.onmessage = function (event) {
            var message = JSON.parse(event.data);
            deadenemies.push.apply(deadenemies, message[0]);
            movedenemies.push.apply(movedenemies, message[1]);
            for (var j = 0; j < message[2].length; j++) { //response is array of numbers so three pawns attack would look like [10,10,10]
                health -= message[2][j]; //subtracts health from player done by units in range
            }
        };
    }
    else {
        $("#playground").text = "Sorry, your browser does not support Web Workers...  Please use the lastest version of Chrome, Internet Explorer, or Firefox.";
    }
}

function stopenemyWorker() {
    w.terminate();
}

var load_sounds = function () {
    sound_thwip = soundManager.createSound({
        url: "assets/aud/thwip.mp3",
        autoLoad: true
    });
    sound_upg = soundManager.createSound({
        url: "assets/aud/upgrade.mp3"
    });
    sound_amb = soundManager.createSound({
        url: "assets/aud/ambient.mp3"
    });
    loopSound(sound_amb);
};

function loopSound(sound) {
  sound.play({
    onfinish: function() {
      loopSound(sound);
    }
  });
}

//initialize soundManager
soundManager.setup({
    // where to find flash audio SWFs, as needed
    url: '/assets/swf-files/',
    // optional: prefer HTML5 over Flash for MP3/MP4
    preferFlash: false,
    debugMode: false,
    onready: function () {
        load_sounds();
    }
});

$.when(
    $.getScript("functions.js"),
    $.getScript("init.js"),
    $.Deferred(function (deferred) {
        $(deferred.resolve);
    })
).done(function () {

    $(function () {
        
        //main loop!
        $.playground().registerCallback(function () {

            message.delta = { "x": deltax, "y": deltay };
            w.postMessage(JSON.stringify(message)); //sends new enemies and hit enemies to the enemy worker
            newenemies.length = 0;
            hitenemies.length = 0;

            $("#healthbar").width( 8 * health );
            health -= HEALTH_DRAIN;
            if (health <= 0) {
                $.playground().pauseGame();
                stopenemyWorker();
                $("#healthbar").hide();
                $("#playground").prepend("<div id='welcomeScreen'>");
                $("#welcomeScreen").css('background-image', 'url(assets/img/youdiedcredits.png)');
                $("#welcomeScreen").css('opacity', '100');
            }

            //get input, but block movement into solids
            if ($.gQ.keyTracker[65] && $("#leftbound").collision("#terrain,.solid").length === 0) { move_left = 1; } else { move_left = 0; }
            if ($.gQ.keyTracker[68] && $("#rightbound").collision("#terrain,.solid").length === 0) { move_right = 1; } else { move_right = 0; }
            if ($.gQ.keyTracker[87] && $("#upbound").collision("#terrain,.solid").length === 0) { move_up = 1; } else { move_up = 0; }
            if ($.gQ.keyTracker[83] && $("#downbound").collision("#terrain,.solid").length === 0) { move_down = 1; } else { move_down = 0; }

            var delta_vector = normal({x: (move_left - move_right), y: (move_up - move_down)});
            deltax = MOVE_SPEED * delta_vector.x;
            deltay = MOVE_SPEED * delta_vector.y;

            mousex = $.gQ.mouseTracker.x;
            mousey = $.gQ.mouseTracker.y;

            //get mouse rotation
            facing = (180 / Math.PI) * angle(mousex - PLAYER_POSX, mousey - PLAYER_POSY);

            //turn to face mouse
            $("#feet").rotate(facing + 90, false);
            $("#playerspr").rotate(facing, false);

            //pause/resume feet animation
            if (delta_vector.x !== 0 || delta_vector.y !== 0) {
                $("#feet").resumeAnimation();
            } else {
                $("#feet").pauseAnimation();
            }

            //spin the wheel
            $("#sealui").rotate(1, true);

            //tick cooldown
            if (cooldown > 0) cooldown--;


            //obtain upgrades!
            if ($("#playerspr").collision("#terrain,.upgrade").length > 0) {

                var counter;
                do {
                    counter++;
                    if (counter > 1000) break;
                    heldcard = Math.floor(51 * Math.random());
                    number = heldcard % 13;
                    suit = Math.floor(heldcard / 13);
                } while (deckupgrades[heldcard] == 1 || number < 2 || number > 10);

                deckupgrades[heldcard] = 1;
                totalupgrades++;

                //DING!
                sound_upg.play();

                update_hud();

                //destroy pickup
                $("#playerspr").collision("#terrain,.upgrade").each(function () { $(this).remove(); });

                //win the game!
                if (totalupgrades >= 40) {
                    $.playground().pauseGame();
                    stopenemyWorker();
                    $("#healthbar").hide();
                    $("#playground").prepend("<div id='welcomeScreen'>");
                    $("#welcomeScreen").css('background-image', 'url(assets/img/youwincredits.png)');
                    $("#welcomeScreen").css('opacity', '100');
                }
            }

            //scroll terrain
            offsetx += deltax;
            offsety += deltay;
            if (offsetx >= 64) {
                offsetx -= 64;
                generate("left");
            }
            if (offsetx <= -64) {
                offsetx += 64;
                generate("right");
            }
            if (offsety >= 64) {
                offsety -= 64;
                generate("up");
            }
            if (offsety <= -64) {
                offsety += 64;
                generate("down");
            }
            $("#bg").xy(offsetx - 64, offsety - 64, false);

            //resolve delay effects
            for (var i = 0; i < delayed_shots.length; i++) {
                if (delayed_shots[i].delay < 1) {
                    spawn_card(PLAYER_POSX - 16, PLAYER_POSY - 16, delayed_shots[i].suit, facing + delayed_shots[i].dirmod, DEFAULT_CARD_SPEED);
                    delayed_shots.splice(i, 1);
                } else {
                    delayed_shots[i].delay -= 1;
                }
            }

            //process thrown cards

            $(".thrown_card").each(function () {

                //age and expire
                $(this)[0].thrown_card.age += 1;
                if ($(this)[0].thrown_card.age > CARD_EXPIRATION_DATE) {
                    $(this).remove();
                    return;
                }
                //handle movement                                                                   UPDATE WHEN VECTORS ARE ADDED
                $(this).xy(
                    $(this)[0].thrown_card.speed * Math.cos($(this)[0].thrown_card.direction * (Math.PI / 180)) + deltax,
                    $(this)[0].thrown_card.speed * Math.sin($(this)[0].thrown_card.direction * (Math.PI / 180)) + deltay, true);
                //star turn!
                if ($(this)[0].thrown_card.option == 5 && $(this)[0].thrown_card.age == 10) {
                    $(this)[0].thrown_card.direction += 162;
                }
                //boomerang curve!
                if ($(this)[0].thrown_card.option == 7) {
                    $(this)[0].thrown_card.direction -= 4;
                }
                //diffusion split!
                if ($(this)[0].thrown_card.option == 10 && $(this)[0].thrown_card.age % 5 === 0) {
                    spawn_card($(this).x(), $(this).y(), $(this)[0].thrown_card.suit, $(this)[0].thrown_card.direction + 90, DEFAULT_CARD_SPEED);
                    spawn_card($(this).x(), $(this).y(), $(this)[0].thrown_card.suit, $(this)[0].thrown_card.direction - 90, DEFAULT_CARD_SPEED);
                }
                //detect collisions
                var hitsomething = 0;

                $(this).collision("#enemies,.enemy").each(function () {
                    $(this)[0].enemy.health -= 1;
                    if ($(this)[0].enemy.health <= 1) {
                        hitenemies.push({ "id": $(this)[0].enemy.name });
                        console.log($(this)[0].enemy.name + " was killed.");
                        switch ($(this)[0].enemy.type) {
                            case "pawn":
                                health += 5;
                                break;
                            case "knight":
                                health += 10;
                                break;
                            case "bishop":
                                health += 10;
                                break;
                            case "rook":
                                health += 10;
                                break;
                            case "queen":
                                health += 25;
                                break;
                            case "king":
                                health += 50;
                                break;
                        }
                        if (health > 100) { health = 100; }
                    }

                    hitsomething = 1;

                });
                if ((hitsomething || $(this).collision("#terrain,.solid").length > 0) && ($(this)[0].thrown_card.option != 7 && $(this)[0].thrown_card.option != 10)) {

                    spawn_fx($(this)[0].thrown_card.suit, $(this).x(), $(this).y());

                    //bomb boom!
                    if ($(this)[0].thrown_card.option == 6) {
                        spawn_card($(this).x(), $(this).y(), $(this)[0].thrown_card.suit, $(this)[0].thrown_card.direction - 150, DEFAULT_CARD_SPEED);
                        spawn_card($(this).x(), $(this).y(), $(this)[0].thrown_card.suit, $(this)[0].thrown_card.direction - 90, DEFAULT_CARD_SPEED);
                        spawn_card($(this).x(), $(this).y(), $(this)[0].thrown_card.suit, $(this)[0].thrown_card.direction - 30, DEFAULT_CARD_SPEED);
                        spawn_card($(this).x(), $(this).y(), $(this)[0].thrown_card.suit, $(this)[0].thrown_card.direction + 30, DEFAULT_CARD_SPEED);
                        spawn_card($(this).x(), $(this).y(), $(this)[0].thrown_card.suit, $(this)[0].thrown_card.direction + 90, DEFAULT_CARD_SPEED);
                        spawn_card($(this).x(), $(this).y(), $(this)[0].thrown_card.suit, $(this)[0].thrown_card.direction + 150, DEFAULT_CARD_SPEED);
                    }

                    $(this).remove();
                    return;
                }
            });

            //process obstacles
            $(".doodad").each(function () {
                //handle movement
                $(this).xy(deltax, deltay, true);
                //handle outofbounds - past farthest spawn distance
                if ($(this).x() < -2 * $(this).h() ||
                    $(this).x() > WINDOW_WIDTH + $(this).h() ||
                    $(this).y() < -2 * $(this).h() ||
                    $(this).y() > WINDOW_HEIGHT + $(this).h()) {
                    $(this).remove();
                }
            });

            //----process enemies----
            if (movedenemies.length > 0) {
                for (var j = 0; j <= movedenemies.length - 1; j++) {
                    $("#" + movedenemies[j].id).xy(movedenemies[j].x, movedenemies[j].y, true);
                }
                movedenemies.length = 0;
            }
            if (deadenemies.length > 0) {
                for (var k = 0; k <= deadenemies.length - 1; k++) {
                    console.log(deadenemies[k] + " died");
                    $("#" + deadenemies[k]).remove();
                }
                deadenemies.length = 0;
            }

            //----process enemy projectiles----


        }, REFRESH_RATE);
    });

});