Single Small Camera

var config = {
    type: Phaser.WEBGL,
    parent: 'phaser-example',
    width: 800,
    height: 600,
    backgroundColor: '#2d2d2d',
    scene: {
        preload: preload,
        create: create
    }
};

var scroller;

var game = new Phaser.Game(config);

function preload ()
{
    this.load.image('pic', 'assets/pics/skull-and-bones.jpg');
    this.load.image('vulkaiser', 'assets/pics/vulkaiser-red.png');
    this.load.image('mushroom', 'assets/sprites/mushroom2.png');
}

function create ()
{
    //  In the middle
    this.add.image(400, 300, 'pic');

    //  Why isn't this cropped?
    scroller = this.add.image(400, 300, 'vulkaiser').setScale(4).setAlpha(0.3);

    //  In the corners
    this.add.image(0, 0, 'mushroom').setOrigin(0, 0);
    this.add.image(800, 0, 'mushroom').setOrigin(1, 0);
    this.add.image(0, 600, 'mushroom').setOrigin(0, 1);
    this.add.image(800, 600, 'mushroom').setOrigin(1, 1);

    var cam = this.cameras.main;

    //  Test 1 - Change the x/y and keep w/h the same and the scene is cropped properly. The x/y appear to offset from the top left.
    // cam.setViewport(0, 0, 800, 600);

    //  Test 2 - Combine Test 1 with 'zoom' and the scene is no longer cropped and the viewport size is scaled wrong
    // cam.zoom = 0.5;

    //  Test 3 - Try half zoom and a half viewport size together - appears broken, image still pops out of the top, placement seems wrong
    cam.setViewport(300, 100, 400, 300);
    cam.zoom = 0.5;
    cam.scrollX = 200;
    cam.scrollY = 150;

    //  Test 4 - Change position as if zoom is applied to the camera center, but keep original w/h
    //  Seems to place the camera in the correct position, but scaled items appear outside of the viewport (because scissor width = 800x600)
    // cam.setViewport(-200, -150, 800, 600);
    // cam.zoom = 0.5;

    //  Test 5 - Change position and viewport with zoom. Gets scissored properly but scale is all wrong (half size it should be) and weirdly offset.
    // cam.setViewport(-200, -150, 400, 300);
    // cam.zoom = 0.5;
}
                        

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