broken-neees
Version:
A really broken NEEES emulator that introduces glitches and random bugs on purpose!
298 lines (297 loc) • 13.1 kB
JavaScript
"use strict";
function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _InMemoryRegister = _interopRequireDefault(require("../lib/InMemoryRegister"));
var _byte = _interopRequireDefault(require("../lib/byte"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return _typeof(key) === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (_typeof(input) !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (_typeof(res) !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, "prototype", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
var PPUCtrl = /*#__PURE__*/function (_InMemoryRegister$PPU) {
_inherits(PPUCtrl, _InMemoryRegister$PPU);
var _super = _createSuper(PPUCtrl);
function PPUCtrl() {
_classCallCheck(this, PPUCtrl);
return _super.apply(this, arguments);
}
_createClass(PPUCtrl, [{
key: "onLoad",
value: function onLoad() {
this.addField("vramAddressIncrement32", 2).addField("sprite8x8PatternTableId", 3).addField("backgroundPatternTableId", 4).addField("spriteSize", 5).addField("generateNMIOnVBlank", 7);
}
}, {
key: "onWrite",
value: function onWrite(value) {
this.setValue(value);
this.ppu.loopy.onPPUCtrlWrite(value);
}
}]);
return PPUCtrl;
}(_InMemoryRegister.default.PPU);
var PPUMask = /*#__PURE__*/function (_InMemoryRegister$PPU2) {
_inherits(PPUMask, _InMemoryRegister$PPU2);
var _super2 = _createSuper(PPUMask);
function PPUMask() {
_classCallCheck(this, PPUMask);
return _super2.apply(this, arguments);
}
_createClass(PPUMask, [{
key: "onLoad",
value: function onLoad() {
this.addField("grayscale", 0).addField("showBackgroundInFirst8Pixels", 1).addField("showSpritesInFirst8Pixels", 2).addField("showBackground", 3).addField("showSprites", 4).addField("emphasizeRed", 5).addField("emphasizeGreen", 6).addField("emphasizeBlue", 7);
}
}, {
key: "isRenderingEnabled",
value: function isRenderingEnabled() {
return this.showBackground || this.showSprites;
}
}, {
key: "transform",
value: function transform(color) {
var r = color >> 0 & 0xff;
var g = color >> 8 & 0xff;
var b = color >> 16 & 0xff;
if (this.grayscale) {
r = g = b = Math.floor((r + g + b) / 3);
}
if (this.emphasizeRed || this.emphasizeGreen || this.emphasizeBlue) {
var all = this.emphasizeRed && this.emphasizeGreen && this.emphasizeBlue;
if (!this.emphasizeRed || all) r = Math.floor(r * 0.75);
if (!this.emphasizeGreen || all) g = Math.floor(g * 0.75);
if (!this.emphasizeBlue || all) b = Math.floor(b * 0.75);
}
return 0xff000000 | r << 0 | g << 8 | b << 16;
}
}, {
key: "onWrite",
value: function onWrite(value) {
this.setValue(value);
}
}]);
return PPUMask;
}(_InMemoryRegister.default.PPU);
var PPUStatus = /*#__PURE__*/function (_InMemoryRegister$PPU3) {
_inherits(PPUStatus, _InMemoryRegister$PPU3);
var _super3 = _createSuper(PPUStatus);
function PPUStatus() {
_classCallCheck(this, PPUStatus);
return _super3.apply(this, arguments);
}
_createClass(PPUStatus, [{
key: "onLoad",
value: function onLoad() {
this.addWritableField("spriteOverflow", 5).addWritableField("sprite0Hit", 6).addWritableField("isInVBlankInterval", 7);
this.setValue(128);
}
}, {
key: "onRead",
value: function onRead() {
if (this.ppu.isDebugging) return this.value;
var value = this.value;
this.isInVBlankInterval = 0;
this.ppu.loopy.onPPUStatusRead();
return value;
}
}]);
return PPUStatus;
}(_InMemoryRegister.default.PPU);
var OAMAddr = /*#__PURE__*/function (_InMemoryRegister$PPU4) {
_inherits(OAMAddr, _InMemoryRegister$PPU4);
var _super4 = _createSuper(OAMAddr);
function OAMAddr() {
_classCallCheck(this, OAMAddr);
return _super4.apply(this, arguments);
}
_createClass(OAMAddr, [{
key: "onWrite",
value: function onWrite(value) {
this.setValue(value);
}
}]);
return OAMAddr;
}(_InMemoryRegister.default.PPU);
var OAMData = /*#__PURE__*/function (_InMemoryRegister$PPU5) {
_inherits(OAMData, _InMemoryRegister$PPU5);
var _super5 = _createSuper(OAMData);
function OAMData() {
_classCallCheck(this, OAMData);
return _super5.apply(this, arguments);
}
_createClass(OAMData, [{
key: "onRead",
value: function onRead() {
var oamAddress = this.ppu.registers.oamAddr;
return this.ppu.memory.oamRam[oamAddress.value];
}
}, {
key: "onWrite",
value: function onWrite(value) {
var oamAddress = this.ppu.registers.oamAddr;
this.ppu.memory.oamRam[oamAddress.value] = value;
this._incrementAddress();
}
}, {
key: "_incrementAddress",
value: function _incrementAddress() {
var oamAddress = this.ppu.registers.oamAddr;
oamAddress.setValue(oamAddress.value + 1);
}
}]);
return OAMData;
}(_InMemoryRegister.default.PPU);
var PPUScroll = /*#__PURE__*/function (_InMemoryRegister$PPU6) {
_inherits(PPUScroll, _InMemoryRegister$PPU6);
var _super6 = _createSuper(PPUScroll);
function PPUScroll() {
_classCallCheck(this, PPUScroll);
return _super6.apply(this, arguments);
}
_createClass(PPUScroll, [{
key: "onWrite",
value: function onWrite(value) {
this.ppu.loopy.onPPUScrollWrite(value);
}
}]);
return PPUScroll;
}(_InMemoryRegister.default.PPU);
var PPUAddr = /*#__PURE__*/function (_InMemoryRegister$PPU7) {
_inherits(PPUAddr, _InMemoryRegister$PPU7);
var _super7 = _createSuper(PPUAddr);
function PPUAddr() {
_classCallCheck(this, PPUAddr);
return _super7.apply(this, arguments);
}
_createClass(PPUAddr, [{
key: "onWrite",
value: function onWrite(value) {
this.ppu.loopy.onPPUAddrWrite(value);
}
}]);
return PPUAddr;
}(_InMemoryRegister.default.PPU);
var PPUData = /*#__PURE__*/function (_InMemoryRegister$PPU8) {
_inherits(PPUData, _InMemoryRegister$PPU8);
var _super8 = _createSuper(PPUData);
function PPUData() {
_classCallCheck(this, PPUData);
return _super8.apply(this, arguments);
}
_createClass(PPUData, [{
key: "onLoad",
value: function onLoad() {
this.buffer = 0;
}
}, {
key: "onRead",
value: function onRead() {
if (this.ppu.isDebugging) return this.buffer;
var data = this.buffer;
var ppuAddress = this.ppu.loopy.vAddress.getValue();
this.buffer = this.ppu.memory.read(ppuAddress);
if (ppuAddress >= 0x3f00) data = this.buffer;
this._incrementAddress();
return data;
}
}, {
key: "onWrite",
value: function onWrite(value) {
var ppuAddress = this.ppu.loopy.vAddress.getValue();
this.ppu.memory.write(ppuAddress, value);
this._incrementAddress();
}
}, {
key: "_incrementAddress",
value: function _incrementAddress() {
var ppuCtrl = this.ppu.registers.ppuCtrl;
var ppuAddress = this.ppu.loopy.vAddress.getValue();
this.ppu.loopy.vAddress.setValue(_byte.default.toU16(ppuAddress + (ppuCtrl.vramAddressIncrement32 ? 32 : 1)));
}
}]);
return PPUData;
}(_InMemoryRegister.default.PPU);
var OAMDMA = /*#__PURE__*/function (_InMemoryRegister$PPU9) {
_inherits(OAMDMA, _InMemoryRegister$PPU9);
var _super9 = _createSuper(OAMDMA);
function OAMDMA() {
_classCallCheck(this, OAMDMA);
return _super9.apply(this, arguments);
}
_createClass(OAMDMA, [{
key: "onWrite",
value: function onWrite(value) {
for (var i = 0; i < 256; i++) {
var address = _byte.default.buildU16(value, i);
var data = this.ppu.cpu.memory.read(address);
this.ppu.memory.oamRam[i] = data;
}
this.ppu.cpu.extraCycles += 513;
}
}]);
return OAMDMA;
}(_InMemoryRegister.default.PPU);
var VideoRegisters = /*#__PURE__*/function () {
function VideoRegisters(ppu) {
_classCallCheck(this, VideoRegisters);
this.ppuCtrl = new PPUCtrl(ppu); // $2000
this.ppuMask = new PPUMask(ppu); // $2001
this.ppuStatus = new PPUStatus(ppu); // $2002
this.oamAddr = new OAMAddr(ppu); // $2003
this.oamData = new OAMData(ppu); // $2004
this.ppuScroll = new PPUScroll(ppu); // $2005
this.ppuAddr = new PPUAddr(ppu); // $2006
this.ppuData = new PPUData(ppu); // $2007
this.oamDma = new OAMDMA(ppu); // $4014
}
_createClass(VideoRegisters, [{
key: "read",
value: function read(address) {
var _this$_getRegister;
return (_this$_getRegister = this._getRegister(address)) === null || _this$_getRegister === void 0 ? void 0 : _this$_getRegister.onRead();
}
}, {
key: "write",
value: function write(address, value) {
var _this$_getRegister2;
(_this$_getRegister2 = this._getRegister(address)) === null || _this$_getRegister2 === void 0 ? void 0 : _this$_getRegister2.onWrite(value);
}
}, {
key: "_getRegister",
value: function _getRegister(address) {
switch (address) {
case 0x2000:
return this.ppuCtrl;
case 0x2001:
return this.ppuMask;
case 0x2002:
return this.ppuStatus;
case 0x2003:
return this.oamAddr;
case 0x2004:
return this.oamData;
case 0x2005:
return this.ppuScroll;
case 0x2006:
return this.ppuAddr;
case 0x2007:
return this.ppuData;
case 0x4014:
return this.oamDma;
default:
}
}
}]);
return VideoRegisters;
}();
exports.default = VideoRegisters;