wasmboy/lib/memory/state.js

Gameboy / Gameboy Color Emulator written for Web Assembly using AssemblyScript. Shell/Debugger in Preact

// Functions here are depedent on WasmBoyMemory state.
// Thus me bound using .bind() on functions

import { WasmBoyPlugins } from '../plugins/plugins';

//  Will save the state in parts, to easy memory map changes:
// https://docs.google.com/spreadsheets/d/17xrEzJk5-sCB9J2mMJcVnzhbE-XH_NvczVSQH9OHvRk/edit?usp=sharing
const WASMBOY_SAVE_STATE_SCHEMA = {
  wasmboyMemory: {
    wasmBoyInternalState: [],
    wasmBoyPaletteMemory: [],
    gameBoyMemory: [],
    cartridgeRam: []
  },
  date: undefined,
  isAuto: undefined
};

// Function to return a save state of the current memory
export function getSaveState() {
  // Save our internal wasmboy state to memory
  // Should be done whenever we send back memory
  // this.wasmInstance.exports.saveState();

  let saveState = Object.assign({}, WASMBOY_SAVE_STATE_SCHEMA);

  saveState.wasmboyMemory.wasmBoyInternalState = this.internalState;
  saveState.wasmboyMemory.wasmBoyPaletteMemory = this.paletteMemory;
  saveState.wasmboyMemory.gameBoyMemory = this.gameboyMemory;
  saveState.wasmboyMemory.cartridgeRam = this.cartridgeRam;
  saveState.date = Date.now();
  saveState.isAuto = false;

  if (this.saveStateCallback) {
    this.saveStateCallback(saveState);
  }

  WasmBoyPlugins.runHook({
    key: 'saveState',
    params: [saveState]
  });

  return saveState;
}