var game = new Phaser.Game(1280, 720, Phaser.AUTO, null, {preload: preload, create: create, update: update});
var player;
var input;
var spacebar;
var D;
var A;
var S;
var W;
var walls;
var level = [
    "xxxxx",
    "x   x",
    "x   x",
    "xxxxx"
];

function preload(){
    setGameProperties();
    preloadImageAssets();
}

function create(){
    playerInit();
    levelInit();
}

function update(){
    getCollisions();
    getPlayerInput();
}

function setGameProperties(){
    game.scale.scaleMode = Phaser.ScaleManager.SHOW_ALL;
    game.scale.pageAlignHorizontally = true;
    game.scale.pageAlignVertically = true;

    game.stage.backgroundColor = "#08ff00";

    game.physics.startSystem(Phaser.Physics.ARCADE);
    game.world.enableBody = true;

    input = game.input.keyboard.createCursorKeys();

    spaceBar = game.input.keyboard.addKey(Phaser.Keyboard.SPACEBAR);
    D = game.input.keyboard.addKey(Phaser.Keyboard.D);
    A = game.input.keyboard.addKey(Phaser.Keyboard.A);
    S = game.input.keyboard.addKey(Phaser.Keyboard.S);
    W = game.input.keyboard.addKey(Phaser.Keyboard.W);
}

function preloadImageAssets(){
    game.load.spritesheet("player", "assets/player.png", 64, 64);
    game.load.image("wall", "assets/wall.png");
}

function playerInit(){
    player = game.add.sprite(0,100,"player");
    player.body.collideWorldBounds = true;
}

function levelInit(){
    walls = game.add.group();
    for(var i = level.length-1; i >= 0; i--)
    {
        for(var j = 0; j < level[i].length; j++){
            if (level[i][j] == "x"){
                var wall = game.add.sprite(25*j, 295-(25*(level.length-1-i)), "wall");
                wall.body.immovable = true;
                walls.add(wall);
            }
        }
    }
}

function getCollisions(){
    game.physics.arcade.collide(player, walls);
}

function getPlayerInput(){

    player.animations.add("walk_Down", [0,1,2,3],5,true);
    player.animations.add("walk_Left", [4,5],5,true);
    player.animations.add("walk_Up", [6,7,8,9],5,true);
    player.animations.add("walk_Right", [10,11],5,true);


    if(A.isDown){
        player.body.velocity.x = -200;
        player.animations.play("walk_Left");
    }
    else if(D.isDown){
        player.body.velocity.x = 200;
        player.animations.play("walk_Right");
    }
    else{
        player.body.velocity.x = 0;
    }

    /*-- Y AXIS --*/

    if(S.isDown){
        player.body.velocity.y = 175;
        player.animations.play("walk_Down");
    }
    else if(W.isDown){
        player.body.velocity.y = -175;
        player.animations.play("walk_Up");
    }
    else{
        player.body.velocity.y = 0;
    }

    if(player.body.velocity.x == 0 && player.body.velocity.y == 0){
        player.animations.play("walk_Down");
       }
}