JavaScript Intro Task #2 Question

Question

I'm getting an error message that my code isn't working even though when I demo it, the life count goes down by 1 when it gets poison. Can someone please help? Here is the link to the challenge for task #2: https://teamtreehouse.com/library/introducing-javascript/finishing-the-game/final-code-challenge
My code is below:
var game;
var player;
var platforms;
var badges;
var stars;
var poisons;
var cursors;
var jumpButton;
var scoreText;
var livesText;
var finalMessage;
var won = false;
var gameOver = false;
var currentScore = 0;
var lives = 3;
var winningScore = 100;
function createStars() {
    stars = game.add.physicsGroup();
starCreate(425, 100, 'star');
starCreate(315, 100, 'star');
starCreate(175, 200, 'star');
starCreate(200, 400, 'star');
starCreate(250, 550, 'star');
}
function createPoisons() {
    poisons = game.add.physicsGroup();
poisonCreate(675, 275, 'poison');
poisonCreate(450, 375, 'poison');
poisonCreate(375, 475, 'poison');
}
function createPlatforms() {
    platforms = game.add.physicsGroup();
platforms.create(300, 150, 'platform');
platforms.create(400, 250, 'platform');
platforms.create(100, 250, 'platform');
platforms.create(500, 350, 'platform');
platforms.create(400, 450, 'platform');
platforms.create(300, 550, 'platform');

platforms.setAll('body.immovable', true);
}
function starCreate(left, top, starImage) {
    var star = stars.create(left, top, starImage);
    star.animations.add('spin');
    star.animations.play('spin', 8, true);
}
function poisonCreate(left, top, poisonImage) {
    var poison = poisons.create(left, top, poisonImage);
    poison.animations.add('bubble');
    poison.animations.play('bubble', 8, true);
}
function starCollect(player, star) {
    star.kill();
      currentScore = currentScore + 20; 
    if (currentScore === winningScore) {
        won = true;
    }
}
function poisonCollect(player, poison) {
    poison.kill();
    if (poison.key === 'poison') {
      lives = lives - 1;
    }
    if (lives === 0) {
        player.kill();
        gameOver = true;
    }
}
window.onload = function () {
game = new Phaser.Game(800, 600, Phaser.AUTO, '', { preload: preload, create: create, update: update, render: render });

function preload() {

game.stage.backgroundColor = '#89889c';

//Load images
    game.load.image('platform', 'platform.png');
    //Load spritesheets
    game.load.spritesheet('player', 'mikethefrog.png', 50, 60);
    game.load.spritesheet('poison', 'poison.png', 24, 62);
    game.load.spritesheet('star', 'star.png', 54, 52);
    game.load.spritesheet('badge', 'badge.png', 42, 54);
}

function create() {

player = game.add.sprite(150, 600, 'player');
    player.animations.add('walk');
    player.anchor.setTo(0.5, 1);

game.physics.arcade.enable(player);

player.body.collideWorldBounds = true;
    player.body.gravity.y = 500;

createStars();
    createPoisons();
    createPlatforms();

cursors = game.input.keyboard.createCursorKeys();
    jumpButton = game.input.keyboard.addKey(Phaser.Keyboard.SPACEBAR);

scoreText = game.add.text(16, 16, "SCORE: " + currentScore, { font: "24px Arial", fill: "white" });
    livesText = game.add.text(685, 16, "LIVES: " + lives, { font: "24px Arial", fill: "white" });

finalMessage = game.add.text(game.world.centerX, 250, "", { font: "48px Arial", fill: "white" });
    finalMessage.anchor.setTo(0.5, 1);
}

function update() {
    scoreText.text = "SCORE: " + currentScore;
    livesText.text = "LIVES: " + lives;

game.physics.arcade.collide(player, platforms);
    game.physics.arcade.overlap(player, stars, starCollect);
    game.physics.arcade.overlap(player, poisons, poisonCollect);

player.body.velocity.x = 0;

if (cursors.left.isDown) {
        player.animations.play('walk', 10, true);
        player.body.velocity.x = -350;
        player.scale.x = - 1;
    }
    else if (cursors.right.isDown) {
        player.animations.play('walk', 10, true);
        player.body.velocity.x = 350;
        player.scale.x = 1;
    }
    else {
        player.animations.stop();
    }

if (jumpButton.isDown && (player.body.onFloor() || player.body.touching.down)) {
        player.body.velocity.y = -400;
    }
    if (won) {
        finalMessage.text = "YOU WIN!!!";
    }
    if (gameOver) {
        finalMessage.text = "GAME OVER!!!";
    }

}

function render() {

}
};

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Monica Djunaidi

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JavaScript Intro Task #2 Question

Monica Djunaidi

Monica Djunaidi