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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<!--Meta-->
<meta charset="utf-8">
<title>SML2 Randomizer</title>
<meta name="description" content="Super Mario Land 2 Randomizer">
<meta name="author" content="Matt Braddock">
<link rel="icon" type="image/x-icon" href="images/favicon.png">
<!--Mobile-->
<meta name="viewport" content="width=device-width, initial-scale=1">
<!--Font-->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Inter&display=swap" rel="stylesheet">
<!--CSS-->
<link rel="stylesheet" href="https://unpkg.com/[email protected]/css/skeleton.css" />
<link rel="stylesheet" href="https://unpkg.com/[email protected]/css/normalize.css" />
<style>
body {
font-family: 'Inter', sans-serif;
margin-top: 3em;
margin-bottom: 5em;
}
input[type="file"] {
display: none;
}
button:disabled, button:disabled:hover {
color: gray;
border: 1px solid #bbb;
}
a, a:visited, a:hover, a:active {
color: black;
}
.bold {
font-weight: bold;
}
.row {
margin-top: 1em;
}
.fakeBtn { /* C&P from skeleton.css */
display: inline-block;
height: 38px;
padding: 0 30px;
text-align: center;
font-weight: 400;
line-height: 38px;
letter-spacing: .1rem;
text-decoration: none;
white-space: nowrap;
background-color: transparent;
border-radius: 4px;
border: 1px solid #bbb;
cursor: pointer;
box-sizing: border-box;
}
.fakeBtn:hover {
color: #333;
border-color: #888;
outline: 0;
}
</style>
</head>
<body>
<div class="container">
<h2>Super Mario Land 2 Randomizer</h2>
<div class="row">
<div class="one-half column">
<label class="fakeBtn">
<input id="rom" type="file" accept=".gb" />
Upload ROM
</label>
</div>
<div class="one-half column">
<span id="verify"></span>
</div>
</div>
<div class="row">
<div class="one-half column">
<input id="randomSeed" type="radio" name="seed" checked /> Random Seed
</div>
<div class="one-half column">
<input id="chooseSettings" type="radio" name="flags" checked /> Choose Settings
</div>
</div>
<div class="row">
<div class="one-half column">
<input id="setSeed" type="radio" name="seed" /> Set Seed: <input id="inputSeed" type="text" />
</div>
<div class="one-half column">
<input id="setFlags" type="radio" name="flags" /> Set Flags: <input id="inputFlags" type="text" />
</div>
</div>
<hr />
<h5>Settings</h5>
<div class="row">
<div class="one-half column">
<input id="randomLevelLocations" type="checkbox" name="settings" /> Randomize Level Locations<br />
<input id="includeDualLocations" type="checkbox" name="settings" /> Mix Single & Dual Exit Levels<br />
<input id="randomBossLocations" type="checkbox" name="settings" /> Randomize Boss Locations<br />
<input id="randomBossHealth" type="checkbox" name="settings" /> Randomize Boss Health<br />
<input id="swapAllDualExits" type="checkbox" name="settings" /> Swap <span class="bold">All</span> Dual Exits<br />
<input id="randomSwapDualExits" type="checkbox" name="settings" /> Randomly Swap Dual Exits<br />
<input id="randomGamblingCosts" type="checkbox" name="settings" /> Randomize Gambling Costs<br />
<input id="randomBonusGames" type="checkbox" name="settings" /> Randomize Bonus Game Power-Ups<br />
<input id="randomEnemies" type="checkbox" name="settings" /> Randomize Enemies<br />
<input id="randomPowerups" type="checkbox" name="settings" /> Randomize Power-Ups<br />
<input id="randomPlatforms" type="checkbox" name="settings" /> Randomize Platforms<br />
<input id="patchDX" type="checkbox" name="settings" /> Patch ROM with DX<br />
</div>
<div class="one-half column">
<input id="randomGravity" type="checkbox" name="settings" /> Randomize Gravity<br />
<input id="randomScrollingLevels" type="checkbox" name="settings" /> Randomize Scrolling Levels<br />
<input id="allFastScrolling" type="checkbox" name="settings" /> Double Speed for <span class="bold">All</span> Scrolling Levels<br />
<input id="randomFastScrolling" type="checkbox" name="settings" /> Randomly Double Scrolling Speed<br />
<input id="includeIcePhysics" type="checkbox" name="settings" /> Randomize Ice Physics<br />
<input id="allLuigiPhysics" type="checkbox" name="settings" /> <span class="bold">All</span> Levels Have Luigi Physics<br />
<input id="randomLuigiPhysics" type="checkbox" name="settings" /> Random Luigi Physics<br />
<input id="randomMusic" type="checkbox" name="settings" /> Randomize Music<br />
<input id="randomFastMusic" type="checkbox" name="settings" /> Random Hurry-Up Music<br />
<input id="disableMusic" type="checkbox" name="settings" /> Disable Music<br />
<input id="disableSoundFX" type="checkbox" name="settings" /> Disable Sound Effects<br />
</div>
</div>
<div class="row">
<div class="u-full-width">
<button id="getFlags" onclick="getFlags()">Get Flags From Settings</button>
</div>
</div>
<div class="row">
<div class="one-half column">
<button id="randomize" onclick="randomize()" disabled>Randomize ROM</button>
</div>
<div class="one-half column">
<span id="link"></span>
</div>
</div>
<hr />
<div class="row">
<div class="u-full-width">
<a href="https://github.com/slashinfty/sml2r-node">Source Code</a> - <a href="practice.html">Practice ROM</a>
</div>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/FileSaver.min.js"></script>
<script src="rom-patcher.js"></script>
<script>
document.addEventListener('DOMContentLoaded', () => {
let url = new URL(window.location.href);
if (url.searchParams.has('s')) {
document.getElementById('setSeed').checked = true;
document.getElementById('inputSeed').value = url.searchParams.get('s').toUpperCase();
}
if (url.searchParams.has('f')) {
document.getElementById('setFlags').checked = true;
document.getElementById('inputFlags').value = url.searchParams.get('f').toUpperCase();
}
});
document.getElementById('rom').addEventListener('change', () => {
const verify = buffer => {
const rom = new Uint8Array(buffer);
const count = [0x4D, 0x41, 0x52, 0x49, 0x4F, 0x4C, 0x41, 0x4E, 0x44, 0x32, 0x00]
.reduce((prev, curr, i) => rom[0x134 + i] === curr ? prev - 1 : prev, 11);
document.getElementById('verify').innerHTML = `ROM is ${count > 0 || rom[0x148] === 0x05 ? `<span class="bold">not</span>` : ''} valid. ${count === 0 && rom[0x148] !== 0x05 ? `<img src="images/FriendlyFinger.png" height="38"/>` : ''}`;
if (count > 0 || rom[0x148 === 0x05]) {
document.getElementById('randomize').disabled = true;
} else {
document.getElementById('randomize').disabled = false;
}
}
const file = document.getElementById('rom').files[0];
const reader = new FileReader();
reader.onloadend = () => verify(reader.result);
reader.readAsArrayBuffer(file);
});
[...document.getElementsByName('settings')].forEach(element => {
switch (element.id) {
case 'randomLevelLocations':
element.addEventListener('change', () => {
if (element.checked === false) {
document.getElementById('includeDualLocations').checked = false;
}
});
break;
case 'includeDualLocations':
element.addEventListener('change', () => {
if (element.checked === true) {
document.getElementById('randomLevelLocations').checked = true;
}
});
break;
case 'swapAllDualExits':
element.addEventListener('change', () => {
if (element.checked === true && document.getElementById('randomSwapDualExits').checked === true) {
document.getElementById('randomSwapDualExits').checked = false;
}
});
break;
case 'randomSwapDualExits':
element.addEventListener('change', () => {
if (element.checked === true && document.getElementById('swapAllDualExits').checked === true) {
document.getElementById('swapAllDualExits').checked = false;
}
});
break;
case 'allFastScrolling':
element.addEventListener('change', () => {
if (element.checked === true && document.getElementById('randomFastScrolling').checked === true) {
document.getElementById('randomFastScrolling').checked = false;
}
});
break;
case 'randomFastScrolling':
element.addEventListener('change', () => {
if (element.checked === true && document.getElementById('allFastScrolling').checked === true) {
document.getElementById('allFastScrolling').checked = false;
}
});
break;
case 'allLuigiPhysics':
element.addEventListener('change', () => {
if (element.checked === true && document.getElementById('randomLuigiPhysics').checked === true) {
document.getElementById('randomLuigiPhysics').checked = false;
}
});
break;
case 'randomLuigiPhysics':
element.addEventListener('change', () => {
if (element.checked === true && document.getElementById('allLuigiPhysics').checked === true) {
document.getElementById('allLuigiPhysics').checked = false;
}
});
break;
default: break;
}
});
const generateFlags = () => {
let flags = 0;
if (document.getElementById('randomLevelLocations').checked) flags = flags | 0b000000000000000000000001;
if (document.getElementById('includeDualLocations').checked) flags = flags | 0b000000000000000000000010;
if (document.getElementById('randomBossLocations').checked) flags = flags | 0b000000000000000000000100;
if (document.getElementById('randomBossHealth').checked) flags = flags | 0b000000000000000000001000;
if (document.getElementById('randomSwapDualExits').checked) flags = flags | 0b000000000000000000010000;
if (document.getElementById('swapAllDualExits').checked) flags = flags | 0b000000000000000000100000;
if (document.getElementById('randomGamblingCosts').checked) flags = flags | 0b000000000000000001000000;
if (document.getElementById('randomBonusGames').checked) flags = flags | 0b000000000000000010000000;
if (document.getElementById('randomEnemies').checked) flags = flags | 0b000000000000000100000000;
if (document.getElementById('randomPowerups').checked) flags = flags | 0b000000000000001000000000;
if (document.getElementById('randomPlatforms').checked) flags = flags | 0b000000000000010000000000;
if (document.getElementById('randomGravity').checked) flags = flags | 0b000000000000100000000000;
if (document.getElementById('randomScrollingLevels').checked) flags = flags | 0b000000000001000000000000;
if (document.getElementById('randomFastScrolling').checked) flags = flags | 0b000000000010000000000000;
if (document.getElementById('allFastScrolling').checked) flags = flags | 0b000000000100000000000000;
if (document.getElementById('includeIcePhysics').checked) flags = flags | 0b000000001000000000000000;
if (document.getElementById('randomLuigiPhysics').checked) flags = flags | 0b000000010000000000000000;
if (document.getElementById('allLuigiPhysics').checked) flags = flags | 0b000000100000000000000000;
if (document.getElementById('randomMusic').checked) flags = flags | 0b000001000000000000000000;
if (document.getElementById('randomFastMusic').checked) flags = flags | 0b000010000000000000000000;
if (document.getElementById('disableMusic').checked) flags = flags | 0b000100000000000000000000;
if (document.getElementById('disableSoundFX').checked) flags = flags | 0b001000000000000000000000;
if (document.getElementById('patchDX').checked) flags = flags | 0b010000000000000000000000;
return flags;
}
const getFlags = () => {
alert(`Flags: ${('000000' + generateFlags().toString(16)).slice(-6).toUpperCase()}`);
}
const randomize = async () => {
const getROMValues = buff => {
const ascii = [
{char: "0", byte: 0xD9},
{char: "1", byte: 0xDA},
{char: "2", byte: 0xDB},
{char: "3", byte: 0xDC},
{char: "4", byte: 0xDD},
{char: "5", byte: 0xDE},
{char: "6", byte: 0xDF},
{char: "7", byte: 0xE0},
{char: "8", byte: 0xE1},
{char: "9", byte: 0xE2},
{char: "A", byte: 0x35},
{char: "B", byte: 0x36},
{char: "C", byte: 0x37},
{char: "D", byte: 0x38},
{char: "E", byte: 0x39},
{char: "F", byte: 0x3A}
];
const rom = new Uint8Array(buff);
return {
seed: [...new Array(8).keys()].reduce((str, i) => str + ascii.find(x => rom[0x30AD8 + i] === x.byte).char, ''),
flags: [...new Array(6).keys()].reduce((str, i) => str + ascii.find(x => rom[0x30AF9 + i] === x.byte).char, ''),
extension: rom[0x148] === 0x05 ? 'gbc' : 'gb'
};
}
const seed = document.getElementById('setSeed').checked ? document.getElementById('inputSeed').value : undefined;
const flags = ('000000' + (document.getElementById('setFlags').checked ? document.getElementById('inputFlags').value : generateFlags().toString(16))).slice(-6).toUpperCase();
document.getElementById('link').innerHTML = 'Querying server...';
try {
const response = await fetch(`https://sml2r-server.onrender.com?flags=${flags}${seed === undefined ? '' : `&seed=${seed}`}`);
const buffer = await response.arrayBuffer();
const values = getROMValues(buffer);
saveAs(new Blob([buffer], {type: 'octet/stream'}), `sml2r-${values.seed}-${values.flags}.${values.extension}`);
document.getElementById('link').innerHTML = `https://sml2r.download/?s=${values.seed}&f=${values.flags}`;
} catch (error) {
console.error(error);
document.getElementById('link').innerHTML = `Error: ${error}`;
}
}
</script>
</body>
</html>