Making invisible sprite with phaser - html

Question

I need some help with my code. I want to make the str sprite invisible after 10 seconds.
I'm using this link for help: http://phaser.io/examples/v2/time/basic-timed-event
var game = new Phaser.Game(500, 550, Phaser.AUTO);
//var picture;
var Pacman = function (game) {
this.map = null;
this.layer = null;
this.pacman = null;
this.safetile = 14;
this.gridsize = 16;
this.speed = 100;
this.threshold = 3;
this.turnSpeed = 200;
this.marker = new Phaser.Point();
this.turnPoint = new Phaser.Point();
this.directions = [ null, null, null, null, null ];
this.opposites = [ Phaser.NONE, Phaser.RIGHT, Phaser.LEFT, Phaser.DOWN, Phaser.UP ];
this.current = Phaser.NONE;
this.turning = Phaser.NONE;
this.score=0;
this.scoreText='';
this.bonus=0;
this.bonusText='';
};
Pacman.prototype = {
init: function () {
this.scale.scaleMode = Phaser.ScaleManager.SHOW_ALL;
this.scale.pageAlignHorizontally = true;
this.scale.pageAlignVertically = true;
Phaser.Canvas.setImageRenderingCrisp(this.game.canvas);
this.physics.startSystem(Phaser.Physics.ARCADE);
},
preload: function () {
// We need this because the assets are on github pages
// Remove the next 2 lines if running locally
this.load.baseURL = 'https://nikosdaskalos.github.io/pacman/';
this.load.crossOrigin = 'anonymous';
this.load.image('str', 'assets/str.png');
this.load.image('dot', 'assets/dot.jpg');
this.load.image('coin', 'assets/coin.jpg');
this.load.image('tiles', 'assets/pacman-tiles.png');
this.load.spritesheet('pacman', 'assets/pacman.png');
this.load.tilemap('map', 'assets/pacman-map.json', null, Phaser.Tilemap.TILED_JSON);
// Needless to say, graphics (C)opyright Namco
},
create: function () {
this.map = this.add.tilemap('map');
this.map.addTilesetImage('pacman-tiles', 'tiles');
this.layer = this.map.createLayer('Pacman');
//picture = game.add.sprite(game.world.centerX, game.world.centerY, 'str');
//picture.anchor.setTo(0.5, 0.5);
//game.time.events.add(Phaser.Timer.SECOND * 4, fadePicture, this);
this.dots = this.add.physicsGroup();
this.map.createFromTiles(36, this.safetile, 'str', this.layer, this.dots);
this.map.createFromTiles(7, this.safetile, 'dot', this.layer, this.dots);
this.map.createFromTiles(35, this.safetile, 'coin', this.layer, this.dots);
// The dots will need to be offset by 6px to put them back in the middle of the grid
this.dots.setAll('x', 6, false, false, 1);
this.dots.setAll('y', 6, false, false, 1);
// Pacman should collide with everything except the safe tile
this.map.setCollisionByExclusion([this.safetile], true, this.layer);
// Position Pacman at grid location 14x17 (the +8 accounts for his anchor)
this.pacman = this.add.sprite((14 * 16) + 8, (17 * 16) + 8, 'pacman', 0);
this.pacman.anchor.set(0.5);
//this.pacman.animations.add('munch', [0, 1, 2, 1], 20, true);
this.physics.arcade.enable(this.pacman);
this.pacman.body.setSize(16, 16, 0, 0);
this.cursors = this.input.keyboard.createCursorKeys();
//this.pacman.play('munch');
this.move(Phaser.LEFT);
this.scoreText = game.add.text(0, 500, 'Score: 0', { fontSize: '34px Arial', fill: 'white' });
lives = game.add.group();
game.add.text(game.world.width - 340, 500, 'Lives : ', { fontSize: '34px Arial', fill: 'white' });
this.bonusText = game.add.text(360, 500, 'Bonus: 0', { fontSize: '20px Arial', fill: 'white' });
for (var i = 0; i < 3; i++)
{
var pacman = lives.create(game.world.width - 235 + (30 * i), 517, 'pacman');
pacman.anchor.setTo(0.5, 0.5);
pacman.angle = 90;
pacman.alpha = 0.4;
}
},
//function fadePicture() {
//game.add.tween(picture).to( { alpha: 0 }, 2000, Phaser.Easing.Linear.None, true);
//},
checkKeys: function () {
if (this.cursors.left.isDown && this.current !== Phaser.LEFT)
{
this.checkDirection(Phaser.LEFT);
}
else if (this.cursors.right.isDown && this.current !== Phaser.RIGHT)
{
this.checkDirection(Phaser.RIGHT);
}
else if (this.cursors.up.isDown && this.current !== Phaser.UP)
{
this.checkDirection(Phaser.UP);
}
else if (this.cursors.down.isDown && this.current !== Phaser.DOWN)
{
this.checkDirection(Phaser.DOWN);
}
else
{
// This forces them to hold the key down to turn the corner
this.turning = Phaser.NONE;
}
},
checkDirection: function (turnTo) {
if (this.turning === turnTo || this.directions[turnTo] === null || this.directions[turnTo].index !== this.safetile)
{
// Invalid direction if they're already set to turn that way
// Or there is no tile there, or the tile isn't index 1 (a floor tile)
return;
}
// Check if they want to turn around and can
if (this.current === this.opposites[turnTo])
{
this.move(turnTo);
}
else
{
this.turning = turnTo;
this.turnPoint.x = (this.marker.x * this.gridsize) + (this.gridsize / 2);
this.turnPoint.y = (this.marker.y * this.gridsize) + (this.gridsize / 2);
}
},
turn: function () {
var cx = Math.floor(this.pacman.x);
var cy = Math.floor(this.pacman.y);
// This needs a threshold, because at high speeds you can't turn because the coordinates skip past
if (!this.math.fuzzyEqual(cx, this.turnPoint.x, this.threshold) || !this.math.fuzzyEqual(cy, this.turnPoint.y, this.threshold))
{
return false;
}
// Grid align before turning
this.pacman.x = this.turnPoint.x;
this.pacman.y = this.turnPoint.y;
this.pacman.body.reset(this.turnPoint.x, this.turnPoint.y);
this.move(this.turning);
this.turning = Phaser.NONE;
return true;
},
move: function (direction) {
var speed = this.speed;
if (direction === Phaser.LEFT || direction === Phaser.UP)
{
speed = -speed;
}
if (direction === Phaser.LEFT || direction === Phaser.RIGHT)
{
this.pacman.body.velocity.x = speed;
}
else
{
this.pacman.body.velocity.y = speed;
}
// Reset the scale and angle (Pacman is facing to the right in the sprite sheet)
/* this.pacman.scale.x = 1;
this.pacman.angle = 0;
if (direction === Phaser.LEFT)
{
this.pacman.scale.x = -1;
}
else if (direction === Phaser.UP)
{
this.pacman.angle = 270;
}
else if (direction === Phaser.DOWN)
{
this.pacman.angle = 90;
}
this.current = direction;
},*/
this.add.tween(this.pacman).to( { angle: this.getAngle(direction) }, this.turnSpeed, "Linear", true);
this.current = direction;
},
getAngle: function (to) {
// About-face?
if (this.current === this.opposites[to])
{
return "180";
}
if ((this.current === Phaser.UP && to === Phaser.LEFT) ||
(this.current === Phaser.DOWN && to === Phaser.RIGHT) ||
(this.current === Phaser.LEFT && to === Phaser.DOWN) ||
(this.current === Phaser.RIGHT && to === Phaser.UP))
{
return "-90";
}
return "90";
},
eatDot: function (pacman, dot) {
dot.kill();
var audio = new Audio('assets/pacman_chomp.wav');
audio.play()
this.score+=10;
this.scoreText.text= 'Score: ' + this.score;
//setTimeout(audio.play(),2000);
if (this.dots.total === 0)
{
this.dots.callAll('revive');
}
},
/*function muteAudio() {
var audio = document.getElementById('audioPlayer');
if (audio.mute = false) {
document.getElementById('audioPlayer').muted = true;
}
else {
audio.mute = true
document.getElementById('audioPlayer').muted = false;
}
}*/
eatCoin: function(pacman,coin){//pente
coin.kill();
this.score+=20;
this.scoreText.text= 'Score: ' + this.score;
var audio = new Audio('assets/pacman_eatfruit.wav');
audio.play()
if(this.coins.total===0)
{
this.coins.callAll('revive');
}
},
eatStr: function(pacman,str){//pente
str.kill();
this.bonus+=100;
this.bonusText.text= 'Bonus: ' + this.bonus;
var audio = new Audio('assets/pacman_eatfruit.wav');
audio.play()
if(this.strs.total===0)
{
this.strs.callAll('revive');
}
},
update: function () {
this.physics.arcade.collide(this.pacman, this.layer);
this.physics.arcade.overlap(this.pacman, this.dots, this.eatDot, null, this);
this.physics.arcade.overlap(this.pacman, this.dots, this.eatCoin, null, this);
this.physics.arcade.overlap(this.pacman, this.dots, this.eatStr, null, this);
this.marker.x = this.math.snapToFloor(Math.floor(this.pacman.x), this.gridsize) / this.gridsize;
this.marker.y = this.math.snapToFloor(Math.floor(this.pacman.y), this.gridsize) / this.gridsize;
// Update our grid sensors
this.directions[1] = this.map.getTileLeft(this.layer.index, this.marker.x, this.marker.y);
this.directions[2] = this.map.getTileRight(this.layer.index, this.marker.x, this.marker.y);
this.directions[3] = this.map.getTileAbove(this.layer.index, this.marker.x, this.marker.y);
this.directions[4] = this.map.getTileBelow(this.layer.index, this.marker.x, this.marker.y);
this.checkKeys();
if (this.turning !== Phaser.NONE)
{
this.turn();
}
}
};
game.state.add('Game', Pacman, true);
</script>
</body>
</html>
So, can anyone help me with making the str invisible after 10 seconds?

Answer 1

You were pretty close.
I'm going to use pacman as an example, since I'm not 100% sure how you were going to fade out the coins. When Pacman eats them?
First, you want the following fadePicture function:
fadePicture: function() {
game.add.tween(this.pacman).to( { alpha: 0 }, 2000, Phaser.Easing.Linear.None, true);
},
Note how that was changed from function fadePicture().
Next, in your create function you can refer to it:
this.game.time.events.add(Phaser.Timer.SECOND * 4, this.fadePicture, this);
That replaces the following:
//game.time.events.add(Phaser.Timer.SECOND * 4, fadePicture, this);
I've created a JSFiddle with the relevant changes.
If you do want your coins to fade then I would try updating fadePicture to accept a dot/str parameter and then game.add.tween on that.