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Generate ROM hacks with modified palettes 💥.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| import { useRef, useState } from 'react'; | ||
| import { useRom } from '../contexts/RomContext'; | ||
| import { prependNesHeader, inject, debugArrayBuffer } from '../lib/romUtils'; | ||
| import serialisePalette from '../lib/serialiser/serialisePalette'; | ||
|
|
||
| const type = 'application/x-nes-rom'; | ||
| const fileName = 'mm-hack.nes'; | ||
|
|
||
| const DownloadRom = ({ children }) => { | ||
| const { prg, resources } = useRom(); | ||
| const [aHref, setAHref] = useState(null); | ||
| const aRef = useRef(null); | ||
|
|
||
| if (prg === null) { | ||
| return ( | ||
| <button | ||
| className="text-slate-500 opacity-50" | ||
| disabled> | ||
| {children} | ||
| </button> | ||
| ); | ||
| } | ||
|
|
||
| // Inject the new content into the PRG and return a NES ROM buffer. | ||
| const generateRomHackFile = () => { | ||
| const screens = [...resources.titles, ...resources.rooms]; | ||
|
|
||
| // Update screen titles and rooms palette. | ||
| for (let i = 0; i < screens.length; i++) { | ||
| const screen = screens[i]; | ||
| const { offset, size, id } = screen.metadata; | ||
| if (!size) { | ||
| continue; | ||
| } | ||
|
|
||
| const { from, to } = screen.map.find(({ type }) => type === 'palette'); | ||
| const buffer = serialisePalette(screen.palette); | ||
|
|
||
| const overwrites = inject(prg, buffer, offset + from, to - from); | ||
| if (overwrites) { | ||
| console.log('Injecting screen \x1b[33m%i\x1b[0m palette', id); | ||
| } | ||
| } | ||
|
|
||
| // Add the iNES header to make it playable on emulators. | ||
| return prependNesHeader(prg); | ||
| }; | ||
|
|
||
| return ( | ||
| <> | ||
| <button | ||
| className="text-slate-500 transition hover:text-slate-800 hover:dark:text-slate-200" | ||
| onClick={() => { | ||
| const rom = generateRomHackFile(); | ||
| setAHref(window.URL.createObjectURL(new Blob([rom], { type }))); | ||
|
|
||
| // Needs to render first. | ||
| setTimeout(() => { | ||
| // Trigger the download by simulating a click. | ||
| aRef.current.click(); | ||
| window.URL.revokeObjectURL(aHref); | ||
| }); | ||
| }}> | ||
| {children} | ||
| </button> | ||
| {/* eslint-disable-next-line jsx-a11y/anchor-has-content */} | ||
| <a | ||
| className="hidden" | ||
| href={aHref} | ||
| download={fileName} | ||
| ref={aRef} | ||
| /> | ||
| </> | ||
| ); | ||
| }; | ||
|
|
||
| export default DownloadRom; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,14 +1,14 @@ | ||
| import Header from './Header'; | ||
| import Footer from './Footer'; | ||
|
|
||
| export default function Layout({ children }) { | ||
| return ( | ||
| <div className="flex h-dvh flex-col"> | ||
| <Header /> | ||
| <div className="mx-auto flex w-full max-w-7xl grow items-stretch divide-x divide-slate-500 overflow-y-auto"> | ||
| {children} | ||
| </div> | ||
| <Footer /> | ||
| const Layout = ({ children }) => ( | ||
| <div className="flex h-dvh flex-col"> | ||
| <Header /> | ||
| <div className="mx-auto flex w-full max-w-7xl grow items-stretch divide-x divide-slate-500 overflow-y-auto"> | ||
| {children} | ||
| </div> | ||
| ); | ||
| } | ||
| <Footer /> | ||
| </div> | ||
| ); | ||
|
|
||
| export default Layout; |
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