core2d/src/plugin/CursorSprite.mjs

Multiplatform 2D interaction engine

"use strict";

import { Core2D } from "../Core2D.mjs";
import { Rect } from "../Rect.mjs";
import { Sprite } from "../Sprite.mjs";

export class CursorSprite extends Sprite {
  constructor() {
    super();
    this.hovering = null;
    this.pointer = Core2D.getPointer();
    this.setSolid();
  }

  check(sprite) {
    const FOCUS = new Rect(this.getLeft(), this.getTop(), 1, 1);
    return sprite.hasCollision(FOCUS);
  }

  onCollision(sprite) {
    if (sprite.hasTag("clickable") && this.check(sprite)) {
      if (this.hovering != sprite) {
        if (this.hovering) {
          this.hovering.onHoverOut();
        }

        this.hovering = sprite;
        sprite.onHoverIn();
      }
    }
  }

  update() {
    this.setPosition(this.pointer);

    if (this.hovering) {
      if (!this.hasCollision(this.hovering)) {
        this.hovering.onHoverOut();
        this.hovering = null;
      } else if (this.pointer.getPush()) {
        this.hovering.onClick();
      }
    }
  }
}