Exp bar

Introduction¶

Disply experience bar on NameValueLabel.

Author: Rex
Game object

Live demos¶

Usage¶

Sample code

Install plugin¶

Load minify file¶

Load plugin (minify file) in preload stage

scene.load.scenePlugin('rexuiplugin', 'https://raw.githubusercontent.com/rexrainbow/phaser3-rex-notes/master/dist/rexuiplugin.min.js', 'rexUI', 'rexUI');

Add expBar object

var expBar = scene.rexUI.add.expBar(config);

Import plugin¶

Install rex plugins from npm
```
npm i phaser3-rex-plugins
```

Install plugin in configuration of game

import UIPlugin from 'phaser3-rex-plugins/templates/ui/ui-plugin.js';
var config = {
    // ...
    plugins: {
        scene: [{
            key: 'rexUI',
            plugin: UIPlugin,
            mapping: 'rexUI'
        },
        // ...
        ]
    }
    // ...
};
var game = new Phaser.Game(config);

Add expBar object

var expBar = scene.rexUI.add.expBar(config);

Import class¶

Install rex plugins from npm
```
npm i phaser3-rex-plugins
```

Import class

import { ExpBar } from 'phaser3-rex-plugins/templates/ui/ui-components.js';

Add expBar object

var expBar = new ExpBar(scene, config);
scene.add.existing(expBar);

Add expBar object¶

var expBar = scene.rexUI.add.expBar({
    // x: 0,
    // y: 0,
    // anchor: undefined,
    // width: undefined,
    // height: undefined,
    // origin: 0.5
    // originX:
    // originY:

    orientation: 0,
    // rtl: false,

    background: backgroundGameObject,
    icon: iconGameObject,
    iconMask: false,

    nameText: nameTextGameObject,
    valueText: valueTextGameObject,
    // valueTextFormatCallback: function(value, min, max) {
    //     return `${value}/${max}`;
    // },
    // valueTextFormatCallback: null,

    // barShape: 'line',   // 'line', or 'circle'

    // line bar
    bar: {
        trackColor: undefined,
        trackThickness: 2,
        trackStrokeColor: undefined,
        barColor: undefined,
        barColor2: undefined,

        skewX: 0,

        rtl: false,

        easeValue: {
            duration: 0,
            ease: 'linear'
        },
    }, 

    // circle bar
    /*
    bar: {
        barColor: undefined,
        barColor2: undefined,
        trackColor: undefined,
        centerColor: undefined,
        thickness: 0.2,
        startAngle: Phaser.Math.DegToRad(270),
        endAngle: Phaser.Math.DegToRad(270+360),
        anticlockwise: false,
    }
    */

    // bar: CustomProgressGameObject,

    // bar: undefined,

    action: actionGameObject,
    actionMask: false,

    align: {        
        text: 'bottom',  // 'top', 'center', 'bottom'
    },

    space: {
        left: 0,
        right: 0,
        top: 0,
        bottom: 0,

        icon: 0, iconTop: 0, iconBottom: 0,
        name: 0, value: 0,
        bar:0, barBottom: 0, barLeft: 0, barRight: 0,
        text: 0,
        actionTop: 0, actionBottom: 0,
    },

    // easeDuration: 1000,

    levelCounter: {
        table: function(level) { return level * 100; },
        // table: [0, 100, 200, 300,],        
        // maxLevel: -1,        
        // exp: 0,
    },

    // name: '',
    // draggable: false,
    // sizerEvents: false,
    // enableLayer: false,

});

x, y : Position of this object, it is valid when this object is the top object.
anchor : See anchor.
- left, right, centerX, x, top, bottom, centerY, y, aspectRatio : Position based on visible window, which composed of
  - Percentage of visible width/height : 'p%', p: 0 ~ 100.
    - 'left'(=0%), 'center'(=50%), 'right'(=100%)
    - 'top'(=0%), 'center'(=50%), 'bottom'(=100%)
  - Offset : '+n', or '-n'.
- width, height : Set size (invoke onResizeCallback) based on visible window, which composed of
  - Percentage of visible width/height : 'p%', p: 0 ~ 100.
  - Padding : '+n', or '-n'.
- aspectRatio :
  - undefined, or false : Does not keep aspect ratio. Default behavior.
  - true : Use the current width and height as the aspect ratio.
  - A number : Use given number as the aspect ratio.
- onResizeCallback : A default resize callback will be assigned interanlly.
width, height : Minimum width, minimum height.
origin, originX, originY : Set origin of this sizer. Default value is (0.5, 0.5).
orientation :
- 'left-to-right', 'horizontal','h', 'x', or 0 : Put icon at left side, and text at right side.
- 'top-to-bottom', 'vertical','v', 'y', or 1 : Put icon at top side, and text at bottom side.
rtl :
- true : Layout children from right to left.
- false : Layout children from left to right. Default behavior.
background : Game object of background, optional. This background game object will be resized to fit the size of expBar.
icon : Game object of icon, optional.
iconMask : Set true to add a circle mask on icon game object.
- Phaser 3 engine does not support nested mask, uses circle mask image instead.
nameText : Game object of nameText.
- OriginX of nameText will be set to 0.
- Empty text will be set to a space character ' '. To preserve height of this text game object.
valueText : Game object of valueText.
- OriginX of nameText will be set to 1.
- Empty text will be set to a space character ' '. To preserve height of this text game object.
valueTextFormatCallback : Callback to return a string set to valueText game object when invokeing label.setValue(value, min, max) method.
- A callback
```
function(value, min, max) {
    return `${value}/${max}`;
}
```
- null, or false : Don't set valueText game object.
barShape : 'line' or 'circle'.
bar : Game object of bar, or config of horizontal line progress bar, or config of circular progress bar or undefined.
- Config of horizontal line progress bar
  - bar.trackColor : Fill color of bar's track, in number or css string value.
  - bar.trackStrokeColor : Stroke color of bar's track, in number or css string value.
  - bar.trackThickness : Stroke line width of bar's track.
  - bar.barColor, bar.barColor2 : Fill color of bar, in number or css string value. Assign gradient start color by barColor2.
  - bar.skewX : Horizontal skew of track and bar.
  - bar.rtl :
    - false : Bar starts from left side. Default behavior.
    - true : Bar starts from right side.
- Config of circular progress bar
  - bar.shape : 'circle'
  - bar.barColor, bar.barColor2 : Fill color of circular bar, in number or css string value. Assign gradient start color by barColor2.
  - bar.trackColor : Color of circular track, in number or css string value.
  - bar.centerColor : Color of center circle, in number or css string value.
  - bar.thickness : 0 ~ 1, thickness of circular bar. Default value is 0.2 (0.2*radius)
  - bar.startAngle : Start angle of circular bar, in radians. Default value is 270 degrees.
  - bar.endAngle : End angle of circular bar, in radians. Default value is 270+360 degrees.
  - bar.anticlockwise : Set true to put anticlockwise circular bar. Default value is false.
- (CustomProgress) Game object.
- undefined : No bar game object.
action : Game object of action icon, optional.
actionMask : Set true to add a circle mask on action icon game object.
- Phaser 3 engine does not support nested mask, uses circle mask image instead.
align :
- align.text : Alignment of nameText, valueText game objects.
  - 'top', 'center', or 'bottom'. Default value is 'bottom'.
space : Pads spaces.
- space.left, space.right, space.top, space.bottom : Space of bounds.
- space.icon : Space between icon game object and text game object.
- space.iconTop, space.iconBottom : Space around icon game object.
- space.name : Left space of nameText game object.
- space.value : Right space of valueText game object.
- space.bar, space.barLeft, space.barRight, space.barBottom : Space around bar game object.
- space.text : Space between text game object and action icon game object.
- space.actionTop, space.actionBottom : Space around action game object.
easeDuration : Total duration of easing value from level-start to level-end. Default value is 1000 ms.
levelCounter : Config of level-counter
- levelCounter.table : Level table, return experience value from level value. Level value starts from 0.
  - A callback
```
function(level) {
    return experience;
}
```
  - A number array : Experience value of each level.
- levelCounter.maxLevel :
  - undefined : Default value
    - No upper limit for callback level table.
    - (table.length - 1) for number array level table.
  - A number : Maximum level value
- levelCounter.exp : Initial experience value. Default value is 0.
name : Set name of this game object.
draggable : Set true to drag top-most object.
sizerEvents : Set true to fire sizer events. Default value is false.
enableLayer :
- false : Add child game objects into scene's display list. Default behavior.
- true : Add child game objects into an internal layer game object. See also.

Custom class¶

Define class

class MyExpBar extends RexPlugins.UI.ExpBar {
    constructor(scene, config) {
        super(scene, config);
        // ...
        scene.add.existing(this);
    }
    // ...
}

Create instance

var expBar = new MyExpBar(scene, config);

Layout children¶

Arrange position of all elements.

expBar.layout();

Get element¶

Get element

Background game object

var background = expBar.getElement('background');

Icon game object
```
var icon = expBar.getElement('icon');
```

NameText game object

var nameTextObject = expBar.getElement('name');

ValueText game object

var valueTextObject = expBar.getElement('value');

Bar game object

var textObject = expBar.getElement('bar');

Action icon game object

var action = expBar.getElement('action');

Get by name

var gameObject = expBar.getElement('#' + name);
// var gameObject = expBar.getElement('#' + name, recursive);

or

var gameObject = expBar.getByName(name);
// var gameObject = expBar.getByName(name, recursive);

recursive : Set true to search all children recursively.

Accumulate experience¶

Accumulate experience

expBar.gainExp(incExp);
// expBar.exp += incExp;

Will fire 'levelup' event

Reset experience value
```
expBar.resetExp(exp);
```
- Won't fire 'levelup' event.
Force level up
```
expBar.setLevel(level);
```
- Will fire 'levelup' event

Level and experience¶

Get current experience

var exp = expBar.getExp();
// var exp = expBar.exp;

Get current level

var level = expBar.getLevel();
// var level = expBar.level;

Get current required experience to next level
```
var exp = expBar.requiredExp;
```
Get experience of level
```
var exp = expBar.getExp(level);
```
Get level from experience
```
var level = expBar.getLevel(exp);
```

Get required experience to level

var exp = expBar.getRequiredExpToNextLevel(level);
// var exp = expBar.getRequiredExpToNextLevel(level, exp);

Events¶

Easing starting of Level-up

expBar.on('levelup.start', function(level, fromExp, toExp){        
}, scope);

level : Current level

Easing end of Level-up

expBar.on('levelup.end', function(level, fromExp, toExp){        
}, scope);

level : Current level

Total easing of Level-up complete

expBar.on('levelup.complete', function(level){        
}, scope);

level : Current level

Other properties¶

See NameValueLabel, sizer object, base sizer object, container-lite.