broken-neees/controller/Controller.js

A really broken NEEES emulator that introduces glitches and random bugs on purpose!

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _byte = _interopRequireDefault(require("../lib/byte"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
const BUTTONS = ["BUTTON_A", "BUTTON_B", "BUTTON_SELECT", "BUTTON_START", "BUTTON_UP", "BUTTON_DOWN", "BUTTON_LEFT", "BUTTON_RIGHT"];
class Controller {
  constructor(player) {
    this.strobe = false;
    this.cursor = 0;
    this.other = null;
    this._player = player;
    this._buttons = [false, false, false, false, false, false, false, false];
  }
  update(button, isPressed) {
    const index = BUTTONS.indexOf(button);
    this._buttons[index] = isPressed;
  }
  onRead() {
    const strobe = this._player === 1 ? this.strobe : this.other.strobe;
    if (this.cursor >= 8) return 1;

    // [!!!]
    const cursor = this.cursor;
    const isPressed = this._buttons[this.cursor];
    if (!strobe) this.cursor++;

    // [!!!]
    if (!this.cpu.unbroken) {
      if (this._buttons[0]) {
        if (cursor === 6) return +this._buttons[7];else if (cursor === 7) return +this._buttons[6];
      }
    }
    return +isPressed;
  }
  onWrite(value) {
    if (this._player === 2) return;
    this.strobe = _byte.default.getFlag(value, 0);
    if (this.strobe) {
      this.cursor = 0;
      this.other.cursor = 0;
    }
  }
}
exports.default = Controller;