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Courses Plus Student 991 PointsReferenceError: Cant find variable: item. Please help!! What am I doing wrong?!
function poisonCollect(player, poison) { poison.kill(); if (item.key === 'star') { lives = lives + 1; } else if (item.key === 'poison') { lives = lives - 1;
}
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(370, 100, 'star');
starCreate(100, 200, '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 (item.key === 'star') {
lives = lives + 1;
} else if (item.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() {
}
};
1 Answer
Adam Beer
11,314 PointsChallenge Task 2 of 2
There are bottles of poison on screen. The player's life goes up when the player touches a bottle of poison. Change the game so the player's life count decreases by one when a bottle of poison is touched. Hint: the code to change is between lines 71 and 78.
If you search lines 71 and 78 you can find this code section.
function poisonCollect(player, poison) {
poison.kill();
lives = lives + 1; <-- This is your line. Change this mathematical operation.
if (lives === 0) {
player.kill();
gameOver = true;
}
}