git.r.bdr.sh - rbdr/sumo/blob - lib/systems/render_winner.js

   1 import { System } from '@serpentity/serpentity';
   2 import { Text } from 'pixi.js';
   3 import Tinycolor from 'tinycolor2';
   4
   5 import Config from '../config';
   6 import WinnerNode from '../nodes/winner';
   7
   8 const internals = {
   9   kNoPixiError: 'No pixi application passed to render system. Make sure you set the `application` key in the config object when initializing.'
  10 };
  11
  12 /**
  13  * Renders a winner if there is one
  14  *
  15  * @extends {external:Serpentity.System}
  16  * @class RenderWinnerSystem
  17  * @param {object} config a configuration object to extend.
  18  */
  19 export default class RenderWinnerSystem extends System {
  20
  21   constructor(config = {}) {
  22
  23     super();
  24
  25     /**
  26      * The keepers of the winner
  27      *
  28      * @property {external:Serpentity.NodeCollection} pointsKeepers
  29      * @instance
  30      * @memberof RenderWinnerSystem
  31      */
  32     this.winnerKeepers = null;
  33
  34     /**
  35      * The pixi engine we will use to render
  36      *
  37      * @property {external:PixiJs.Application} application
  38      * @instance
  39      * @memberof RenderWinnerSystem
  40      */
  41     this.application = config.application;
  42
  43     if (!this.application) {
  44       throw new Error(internals.kNoPixiError);
  45     }
  46   }
  47
  48   /**
  49    * Initializes system when added. Requests winner keepers
  50    *
  51    * @function added
  52    * @memberof RenderWinnerSystem
  53    * @instance
  54    * @param {external:Serpentity.Engine} engine the serpentity engine to
  55    * which we are getting added
  56    */
  57   added(engine) {
  58
  59     this.winnerKeepers = engine.getNodes(WinnerNode);
  60   }
  61
  62   /**
  63    * Clears system resources when removed.
  64    *
  65    * @function removed
  66    * @instance
  67    * @memberof RenderWinnerSystem
  68    */
  69   removed() {
  70
  71     this.pointsKeepers = null;
  72     if (internals.winnerText) {
  73       this.application.stage.removeChild(internals.winnerText);
  74       internals.winnerText = null;
  75     }
  76   }
  77
  78   /**
  79    * Runs on every update of the loop. Updates the bars
  80    *
  81    * @function update
  82    * @instance
  83    * @param {Number} currentFrameDuration the duration of the current
  84    * frame
  85    * @memberof RenderWinnerSystem
  86    */
  87   update(currentFrameDuration) {
  88
  89     // Right now this is final, once a winner is rendered you would need
  90     // to restart the whole system.
  91     if (internals.winnerText) {
  92       const color = Tinycolor(internals.winnerText.tint.toString(16));
  93       internals.winnerText.tint = parseInt(color.spin(2).toString().substring(1,7), 16);
  94       return;
  95     }
  96
  97     for (const winnerKeeper of this.winnerKeepers) {
  98       const winner = winnerKeeper.winner.winner;
  99       if (winner) {
 100         const message = `${winner} has won`;
 101         internals.winnerText = new Text(message, {
 102           fontFamily: 'Arial',
 103           fontSize: 96 * 8,
 104           fontWeight: 'bold',
 105           fill: 0xffffff,
 106           align: 'center'
 107         });
 108         internals.winnerText.tint = 0xffbbff;
 109         internals.winnerText.scale.x = 0.125;
 110         internals.winnerText.scale.y = 0.125;
 111         internals.winnerText.position.x = Config.horizontalResolution / 2;
 112         internals.winnerText.position.y = Config.verticalResolution / 2;
 113         internals.winnerText.anchor.set(0.5);
 114         this.application.stage.addChild(internals.winnerText);
 115         return;
 116       }
 117     }
 118   }
 119 };
 120