YugPatcher — Powerful Core with an Effortless GUI Configurator, easy to setup and very powerful [ensure development will last for many years]

Description

The Best active patcher, we are continuously working and ensure long life of patcher we will keep updating it so that it never gets outdated.
An actively developed patcher, built for longevity and continuously updated to stay modern, reliable, and ahead of the curve.

Features

Core Patching

– Thor patch format — SingleFile and MultipleFiles modes, GRF merging or direct extraction
– GRF support — Read/write GRF v0x0200 and v0x0300, merge patches with zero re-compression
– Multiple archive formats — .thor, .grf, .zip, .rgz, .7z, and generic file copy
– Concurrent downloads — 1–16 parallel threads (default 4)
– Resume support — interrupted downloads pick up where they left off
– Retry logic — configurable retry count (0–10)
– Post-patch file renames — automatic renaming after patching completes
– GRF backup — optional .bak backup before patching
– Auto-patch mode — starts patching on launch without user interaction
– Cache management — optional cache clearing after successful patch

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Distribution & Configuration

– Single EXE distribution — self-contained, no runtime dependencies
– ConfigEmbedder — pack config + all resources (images, audio, fonts, icons) into the EXE
– PatcherConfigurator — visual GUI editor with live preview, color swatches, autosave recovery, validation warnings,
and preset themes
– External config — alternative patcher.ini file-based configuration

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UI Customization

– Window size — configurable width (400–1920) and height (300–1080)
– Full color control — accent, secondary accent, buttons, text, panels, title bar, border, all with alpha transparency
– Background media — image (.jpg/.png/.bmp) or looping video (.mp4/.avi/.wmv/.webm)
– Custom window icon — .ico and .png support
– Title bar — custom text color, height, dot indicator, overlay opacity, corner radius, border
– Button customization — text, colors, hover colors, custom images, absolute positioning, custom dimensions
– Chrome controls — minimize/close/logs buttons with custom positions and images
– Log panel — toggleable, copy to clipboard, custom background image, custom position/size
– Font customization — system fonts or embedded TTF/OTF files with custom size

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Audio

– Background music — MP3, OGG, WAV, WMA; volume control, mute toggle, persistent preference
– Button click sounds — toggleable
– Button hover sounds — toggleable

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Single Sign-On (SSO)

– Integrated login panel — username/password fields with remember credentials
– Full styling — custom labels, colors, field backgrounds, borders, positioning, images
– Password options — hashing, character whitelist validation, auto-clear on launch
– Encrypted credential storage — persistent local caching
– Custom CLI argument format — configurable argument string passed to game client

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Custom Buttons & Web Integration

– Unlimited custom buttons — text or image-based, absolute positioned, with multiple action types: URL, EXE launch,
Play alias, Patch alias
– Web panels — embed live HTML/WebView2 content at custom positions and sizes
– Website & Register buttons — optional quick-link buttons

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Update & Version Management

– Self-update — checks server version, downloads new EXE, applies via batch script with auto-restart
– Update banner notification — visible indicator when update is available
– Version display — shown in UI

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Game Client Management

– Game client launching — configurable EXE path and CLI arguments
– GRF path config — specify game data file location
– Allow play while outdated — optional, lets user launch game with pending patches

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User Experience

– Progress tracking — overall progress bar, per-file progress, download speed (MB/s), file size, phase indicators
– Real-time log — detachable window, file logging to disk, copy to clipboard
– Status indicators — dot + text showing Ready / Checking / Patching / Done / Error states
– Terms of Service dialog — EULA with MD5 hash tracking (accept once, remembered)
– Auto-enter — countdown then auto-play or auto-patch, cancels on mouse movement
– Tray icon — minimize to tray with tray menu
– Keyboard shortcuts — Enter = Play, Escape = Cancel

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Window Management

– Borderless custom window — frameless, transparent, drag-to-move, custom-drawn border
– Optional resize — corner grip for window resizing

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Security & Validation

– License key system — per-session validation, grace offline mode (5 starts), DPAPI-encrypted counter
– Patch lock — prevents multiple patcher instances
– Path validation — guards against directory traversal in patches
– Maintenance mode — server-side flag blocks patching with custom message

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Server Infrastructure

– Included patch server (Go) — HTTP/HTTPS, TLS 1.2+, CORS, byte-range resume, directory serving, logging middleware
– Fallback URLs — multiple patch server URLs for redundancy
– Patchlist format — simple text manifest with comment support and index-based tracking