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

   1 import { System } from '@serpentity/serpentity';
   2
   3 import DrawnGrabberNode from '../nodes/drawn_grabber';
   4
   5 /**
   6  * Shows a different graphic during the duration of lock
   7  *
   8  * @extends {external:Serpentity.System}
   9  * @class DrawGrabSystem
  10  * @param {object} config a configuration object to extend.
  11  */
  12 export default class DrawGrabSystem extends System {
  13
  14   constructor(config = {}) {
  15
  16     super();
  17
  18     /**
  19      * The node collection of grabbers
  20      *
  21      * @property {external:Serpentity.NodeCollection} drawnGrabbers
  22      * @instance
  23      * @memberof DrawGrabSystem
  24      */
  25     this.drawnGrabbers = null;
  26   }
  27
  28   /**
  29    * Initializes system when added. Requests drawn grabber nodes
  30    *
  31    * @function added
  32    * @memberof DrawGrabSystem
  33    * @instance
  34    * @param {external:Serpentity.Engine} engine the serpentity engine to
  35    * which we are getting added
  36    */
  37   added(engine) {
  38
  39     this.drawnGrabbers = engine.getNodes(DrawnGrabberNode);
  40   }
  41
  42   /**
  43    * Clears system resources when removed.
  44    *
  45    * @function removed
  46    * @instance
  47    * @memberof DrawGrabSystem
  48    */
  49   removed() {
  50
  51     this.drawnGrabbers = null;
  52   }
  53
  54   /**
  55    * Runs on every update of the loop. Updates image depending on if
  56    * grab is locked and active
  57    *
  58    * @function update
  59    * @instance
  60    * @param {Number} currentFrameDuration the duration of the current
  61    * frame
  62    * @memberof DrawGrabSystem
  63    */
  64   update(currentFrameDuration) {
  65
  66     for (const drawnGrabber of this.drawnGrabbers) {
  67
  68       const grab = drawnGrabber.grab;
  69       const container = drawnGrabber.container.container;
  70
  71       if (grab.locked && grab.constraint) {
  72         this._drawGrabFace(container);
  73         continue;
  74       }
  75
  76       if (grab.locked) {
  77         this._drawGrabCooldownFace(container);
  78         continue;
  79       }
  80
  81       this._removeGrabFace(container);
  82     }
  83   }
  84
  85   // Draws the grab face
  86
  87   _drawGrabFace(container) {
  88
  89     const effort = container.getChildByName('effort');
  90     const shadow = container.getChildByName('shadow');
  91     effort.visible = true;
  92     shadow.visible = false;
  93   }
  94
  95   // Draws the grab cooldown face
  96
  97   _drawGrabCooldownFace(container) {
  98
  99     const effort = container.getChildByName('effort');
 100     const shadow = container.getChildByName('shadow');
 101     effort.visible = false;
 102     shadow.visible = true;
 103   }
 104
 105   // Removes the dash face
 106
 107   _removeGrabFace(container) {
 108
 109     const effort = container.getChildByName('effort');
 110     const shadow = container.getChildByName('shadow');
 111     effort.visible = false;
 112     shadow.visible = false;
 113   }
 114 };
 115