Overlay

let sprites = [];
// Overlay is Canvas Blend Modes
class Example extends Phaser.Scene
{
    constructor ()
    {
        super();
    }

    preload ()
    {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v355');
        this.load.image('bg', 'assets/skies/space1.png');
        this.load.image('particle', 'assets/particles/yellow.png');
        this.load.image('logo', 'assets/sprites/phaser2.png');
    }

    create ()
    {
        this.add.image(400, 300, 'bg');

        //  Create the particles
        for (var i = 0; i < 300; i++)
        {
            var x = Phaser.Math.Between(-64, 800);
            var y = Phaser.Math.Between(-64, 600);

            var image = this.add.image(x, y, 'particle');

            //  Canvas and WebGL:

            // NORMAL
            // ADD
            // MULTIPLY
            // SCREEN

            //  Canvas only:

            // OVERLAY
            // DARKEN
            // LIGHTEN
            // COLOR_DODGE
            // COLOR_BURN
            // HARD_LIGHT
            // SOFT_LIGHT
            // DIFFERENCE
            // EXCLUSION
            // HUE
            // SATURATION
            // COLOR
            // LUMINOSITY

            // image.setBlendMode(Phaser.BlendModes.OVERLAY);
            image.setBlendMode(Phaser.BlendModes.ADD);

            sprites.push({ s: image, r: 2 + Math.random() * 6 });
        }

        this.add.image(400, 300, 'logo').setBlendMode(Phaser.BlendModes.DIFFERENCE);
    }

    update ()
    {
        for (var i = 0; i < sprites.length; i++)
        {
            var sprite = sprites[i].s;

            sprite.y -= sprites[i].r;

            if (sprite.y < -256)
            {
                sprite.y = 700;
            }
        }
    }

}

const config = {
    type: Phaser.CANVAS,
    width: 800,
    height: 600,
    parent: 'phaser-example',
    scene: [ Example ]
};


const game = new Phaser.Game(config);
                        

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