Unreal Engine MCP Server

import { UnrealBridge } from '../unreal-bridge.js'; import { loadEnv } from '../types/env.js'; import { spawn } from 'child_process'; export class EngineTools { private env = loadEnv(); constructor(private bridge: UnrealBridge) {} async launchEditor(params?: { editorExe?: string; projectPath?: string }) { const exe = params?.editorExe || this.env.UE_EDITOR_EXE; const proj = params?.projectPath || this.env.UE_PROJECT_PATH; if (!exe) return { success: false, error: 'UE_EDITOR_EXE not set and editorExe not provided' }; if (!proj) return { success: false, error: 'UE_PROJECT_PATH not set and projectPath not provided' }; try { const child = spawn(exe, [proj], { detached: true, stdio: 'ignore' }); child.unref(); return { success: true, pid: child.pid, message: 'Editor launch requested' }; } catch (err: any) { return { success: false, error: String(err?.message || err) }; } } async quitEditor() { try { // Use Python SystemLibrary.quit_editor if available await this.bridge.executePython('import unreal; unreal.SystemLibrary.quit_editor()'); return { success: true, message: 'Quit command sent' }; } catch (err: any) { return { success: false, error: String(err?.message || err) }; } } }