feat(devtools/grf): support for editing and creating new GRF/GRH files

src/components/views/GrfEditorView.tsx

@@ -2,8 +2,7 @@ import { useState, useRef } from "react";
 import { motion, AnimatePresence } from "framer-motion";
 import { useUI, useAudio, useConfig } from "../../context/LauncherContext";
 import { GrfService } from "../../services/GrfService";
-import { GrfFile, GrfNode } from "../../types/grf";
-
+import { GrfFile, GrfNode, GrfFileEntry } from "../../types/grf";
 export default function GrfEditorView() {
   const { setActiveView } = useUI();
   const { playPressSound, playBackSound } = useAudio();
@@ -12,9 +11,8 @@ export default function GrfEditorView() {
   const [filename, setFilename] = useState("game_rules.grf");
   const [notification, setNotification] = useState<{ message: string, type: "success" | "error" } | null>(null);
   const fileInputRef = useRef<HTMLInputElement>(null);
-
+  const addFileInputRef = useRef<HTMLInputElement>(null);
   const [activeTab, setActiveTab] = useState<"rules" | "files">("rules");
-
   const showNotification = (message: string, type: "success" | "error" = "success") => {
     setNotification({ message, type });
     setTimeout(() => setNotification(null), 3000);
@@ -37,6 +35,51 @@ export default function GrfEditorView() {
     e.target.value = "";
   };
 
+  const handleNewGrf = () => {
+    playPressSound();
+    setGrf(GrfService.createDefaultGRF());
+    setFilename("new_rules.grf");
+    showNotification("New GRF Created");
+  };
+
+  const handleAddFile = async (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (!file || !grf) return;
+    playPressSound();
+    const buffer = await file.arrayBuffer();
+    const newFile: GrfFileEntry = {
+      filename: file.name,
+      data: new Uint8Array(buffer)
+    };
+    setGrf({
+      ...grf,
+      files: [...grf.files, newFile]
+    });
+    showNotification(`Added ${file.name}`);
+    e.target.value = "";
+  };
+
+  const handleDeleteFile = (index: number) => {
+    if (!grf) return;
+    playPressSound();
+    const newFiles = [...grf.files];
+    const removed = newFiles.splice(index, 1)[0];
+    setGrf({ ...grf, files: newFiles });
+    showNotification(`Removed ${removed.filename}`);
+  };
+
+  const handleUpdateParameter = (nodePath: string[], paramIndex: number, value: string) => {
+    if (!grf) return;
+    const newGrf = { ...grf };
+    let current = newGrf.root;
+    for (const part of nodePath) {
+      const found = current.children.find(c => c.name === part);
+      if (found) current = found;
+    }
+    current.parameters[paramIndex].value = value;
+    setGrf(newGrf);
+  };
+
   const handleSaveGrf = () => {
     if (!grf) return;
     playPressSound();
@@ -65,12 +108,20 @@ export default function GrfEditorView() {
       className="flex flex-col w-full h-[85vh] max-w-7xl relative"
     >
       <input type="file" ref={fileInputRef} onChange={handleFileLoad} className="hidden" accept=".grf" />
+      <input type="file" ref={addFileInputRef} onChange={handleAddFile} className="hidden" />
       <div className="flex items-center justify-between mb-6 px-4">
         <div className="flex items-center gap-6">
           <h2 className="text-3xl text-white mc-text-shadow tracking-widest uppercase font-bold">GRF Editor</h2>
           {grf && <span className="text-white/40 mc-text-shadow italic">editing: <span className="text-[#FFFF55]">{filename}</span></span>}
         </div>
         <div className="flex gap-4">
+          <button
+            onClick={handleNewGrf}
+            className="px-6 py-2 text-white mc-text-shadow text-lg"
+            style={{ backgroundImage: "url('/images/Button_Background.png')", backgroundSize: "100% 100%" }}
+          >
+            New GRF
+          </button>
           <button
             onClick={() => fileInputRef.current?.click()}
             className="px-6 py-2 text-white mc-text-shadow text-lg"
@@ -115,31 +166,49 @@ export default function GrfEditorView() {
             {activeTab === "rules" && (
               <div className="flex flex-col gap-2">
                 {grf.root.children.map((node, i) => (
-                  <GrfNodeView key={i} node={node} level={0} />
+                  <GrfNodeView key={i} node={node} level={0} path={[]} onUpdate={handleUpdateParameter} />
                 ))}
                 {grf.root.children.length === 0 && <span className="text-white/40 italic">No rules found</span>}
               </div>
             )}
             {activeTab === "files" && (
-              <table className="w-full text-left border-collapse">
-                <thead className="bg-[#252525]">
-                  <tr className="border-b-2 border-[#373737]">
-                    <th className="p-3 text-white/40 uppercase text-xs tracking-widest font-bold">Filename</th>
-                    <th className="p-3 text-white/40 uppercase text-xs tracking-widest font-bold text-right">Size</th>
-                  </tr>
-                </thead>
-                <tbody>
-                  {grf.files.length === 0 && (
-                    <tr><td colSpan={2} className="p-4 text-center text-white/40">No files in GRF</td></tr>
-                  )}
-                  {grf.files.map((f, i) => (
-                    <tr key={i} className="border-b border-[#373737]/30 hover:bg-white/5 transition-colors">
-                      <td className="p-3 text-white font-medium">{f.filename}</td>
-                      <td className="p-3 text-white/60 text-right text-xs">{(f.data.length / 1024).toFixed(2)} KB</td>
+              <div className="flex flex-col gap-4">
+                <button
+                  onClick={() => addFileInputRef.current?.click()}
+                  className="self-start px-6 py-2 text-white mc-text-shadow text-sm"
+                  style={{ backgroundImage: "url('/images/Button_Background.png')", backgroundSize: "100% 100%" }}
+                >
+                  Add File
+                </button>
+                <table className="w-full text-left border-collapse">
+                  <thead className="bg-[#252525]">
+                    <tr className="border-b-2 border-[#373737]">
+                      <th className="p-3 text-white/40 uppercase text-xs tracking-widest font-bold">Filename</th>
+                      <th className="p-3 text-white/40 uppercase text-xs tracking-widest font-bold text-right">Size</th>
+                      <th className="p-3 text-white/40 uppercase text-xs tracking-widest font-bold text-center">Actions</th>
                     </tr>
-                  ))}
-                </tbody>
-              </table>
+                  </thead>
+                  <tbody>
+                    {grf.files.length === 0 && (
+                      <tr><td colSpan={3} className="p-4 text-center text-white/40">No files in GRF</td></tr>
+                    )}
+                    {grf.files.map((f, i) => (
+                      <tr key={i} className="border-b border-[#373737]/30 hover:bg-white/5 transition-colors">
+                        <td className="p-3 text-white font-medium">{f.filename}</td>
+                        <td className="p-3 text-white/60 text-right text-xs">{(f.data.length / 1024).toFixed(2)} KB</td>
+                        <td className="p-3 text-center">
+                          <button
+                            onClick={() => handleDeleteFile(i)}
+                            className="text-[#FF5555] hover:text-[#FF8888] transition-colors"
+                          >
+                            Delete
+                          </button>
+                        </td>
+                      </tr>
+                    ))}
+                  </tbody>
+                </table>
+              </div>
             )}
           </div>
         </div>
@@ -174,11 +243,13 @@ export default function GrfEditorView() {
   );
 }
 
-function GrfNodeView({ node, level }: { node: GrfNode, level: number }) {
+function GrfNodeView({ node, level, path, onUpdate }: { node: GrfNode, level: number, path: string[], onUpdate: (path: string[], paramIdx: number, val: string) => void }) {
   const [expanded, setExpanded] = useState(level < 1);
+  const currentPath = [...path, node.name];
+
   return (
     <div className="flex flex-col mb-1 select-none">
-      <div 
+      <div
         className="flex items-center gap-2 p-2 hover:bg-white/10 cursor-pointer transition-colors"
         style={{ paddingLeft: `${level * 24 + 8}px` }}
         onClick={() => setExpanded(!expanded)}
@@ -206,15 +277,20 @@ function GrfNodeView({ node, level }: { node: GrfNode, level: number }) {
           {node.parameters.length > 0 && (
             <div className="flex flex-col bg-black/20 p-2 mb-2 ml-4">
               {node.parameters.map((p, i) => (
-                <div key={i} className="flex gap-4 border-b border-[#373737]/30 py-1 text-sm">
+                <div key={i} className="flex gap-4 border-b border-[#373737]/30 py-2 text-sm items-center">
                   <span className="text-[#AAAAAA] w-1/3 truncate">{p.name}</span>
-                  <span className="text-white flex-1 whitespace-pre-wrap font-mono">{p.value}</span>
+                  <input
+                    type="text"
+                    value={p.value}
+                    onChange={(e) => onUpdate(path, i, e.target.value)}
+                    className="flex-1 bg-white/5 border border-white/10 px-2 py-1 text-white outline-none focus:border-[#FFFF55]/50 font-mono transition-colors"
+                  />
                 </div>
               ))}
             </div>
           )}
           {node.children.map((child, i) => (
-            <GrfNodeView key={i} node={child} level={level + 1} />
+            <GrfNodeView key={i} node={child} level={level + 1} path={currentPath} onUpdate={onUpdate} />
           ))}
         </div>
       )}

src/services/GrfService.ts

@@ -302,4 +302,21 @@ export class GrfService {
 
     return finalBuffer.buffer;
   }
+
+  public static createDefaultGRF(): GrfFile {
+    return {
+      header: {
+        compressionLevel: GrfCompressionLevel.CompressedRle,
+        crc: 0,
+        compressionType: GrfCompressionType.Zlib,
+        unknownData: new Uint8Array([0, 0, 0, 0])
+      },
+      files: [],
+      root: {
+        name: "__ROOT__",
+        parameters: [],
+        children: []
+      }
+    };
+  }
 }