### Install Cosmic Client v83

Source: https://context7.com/p0nk/cosmic-client/llms.txt

Steps to install the Cosmic Client, including running the original installer, removing anti-cheat and executables, copying custom WZ files, and launching the modified client. Assumes the server is running separately.

```bash
# Step 1: Run the original MapleStory Global v83 installer
# Install to default location or custom directory
MapleGlobal-v83-setup.exe
# Default: C:\Nexon\MapleStory

# Step 2: Remove anti-cheat and original executables from installation directory
# Delete these files/folders:
rm -rf "C:\Nexon\MapleStory\HShield"      # Anti-cheat directory
rm "C:\Nexon\MapleStory\ASPLnchr.exe"     # Launcher
rm "C:\Nexon\MapleStory\MapleStory.exe"   # Original client
rm "C:\Nexon\MapleStory\Patcher.exe"      # Auto-patcher

# Step 3: Copy custom WZ files to installation directory
# Replace existing WZ files with Cosmic versions
cp cosmic-wz/*.wz "C:\Nexon\MapleStory\"

# Step 4: Copy the modified client
cp HeavenMS-localhost-WINDOW.exe "C:\Nexon\MapleStory\"

# Step 5: Launch the client (server must be running)
"C:\Nexon\MapleStory\HeavenMS-localhost-WINDOW.exe"
```

--------------------------------

### Set Up Git LFS for Repository Cloning

Source: https://context7.com/p0nk/cosmic-client/llms.txt

Instructions for installing and using Git Large File Storage (LFS) to clone the Cosmic-client repository, which contains large binary files like WZ and EXE. Covers installation on macOS, Ubuntu/Debian, Windows, and basic LFS commands.

```bash
# Install Git LFS
# macOS
brew install git-lfs

# Ubuntu/Debian
sudo apt install git-lfs

# Windows (via installer or chocolatey)
choco install git-lfs

# Initialize Git LFS in your environment
git lfs install

# Clone the repository (LFS files downloaded automatically)
git clone https://github.com/P0nk/Cosmic-client.git

# If already cloned without LFS, fetch LFS files
cd Cosmic-client
git lfs pull

# Verify LFS-tracked files
git lfs ls-files
# Expected output:
# * HeavenMS-localhost-WINDOW.exe
# * MapleGlobal-v83-setup.exe
# * cosmic-wz/Character.wz
# * cosmic-wz/Etc.wz
# ... (all .wz files)
```

--------------------------------

### Launch Multiple Client Instances (Bash)

Source: https://context7.com/p0nk/cosmic-client/llms.txt

This script attempts to launch multiple instances of the MapleStory client rapidly to overcome potential launch failures. It is designed to increase the probability of at least one instance successfully starting.

```bash
for i in {1..5}; do
    start "" "C:\\Nexon\\MapleStory\\HeavenMS-localhost-WINDOW.exe" &
done
```

--------------------------------

### Modify Client IP Address with Hex Editor

Source: https://context7.com/p0nk/cosmic-client/llms.txt

Guide on how to change the Cosmic Client's connection IP address from localhost (127.0.0.1) to a remote server IP using the HxD hex editor. Involves searching for the IP string and replacing it with the new IP, ensuring the length remains the same.

```bash
# Using HxD Hex Editor (https://mh-nexus.de/en/hxd/)

# 1. Make a backup of the client
cp HeavenMS-localhost-WINDOW.exe HeavenMS-localhost-WINDOW.exe.backup

# 2. Open the client in HxD
# 3. Search for text string: 127.0.0.1
#    - Press Ctrl+F
#    - Select "Text-string" search type
#    - Enter: 127.0.0.1
#    - Find all 3 occurrences

# 4. Replace each occurrence with your server IP
#    Example: Replace "127.0.0.1" with "192.168.1.100"
#
#    Before (hex): 31 32 37 2E 30 2E 30 2E 31
#    After (hex):  31 39 32 2E 31 36 38 2E 31 2E 31 30 30
#
#    Note: New IP must be same length or padded with null bytes

# 5. Save the file (Ctrl+S)
```

--------------------------------

### Verify WZ Files (Bash)

Source: https://context7.com/p0nk/cosmic-client/llms.txt

This command lists all .wz files in the MapleStory directory to verify that all necessary game resource files have been copied correctly. Missing files can lead to game crashes or missing content.

```bash
ls -la "C:\\Nexon\\MapleStory\\*.wz"
```

--------------------------------

### Configure Windows Security Exclusions

Source: https://context7.com/p0nk/cosmic-client/llms.txt

Instructions to configure Windows Security exclusions using PowerShell to prevent antivirus software from deleting modified client files. Includes commands to add exclusions and verify them.

```powershell
# Add exclusions in Windows Security via PowerShell (Run as Administrator)
Add-MpPreference -ExclusionPath "C:\Users\$env:USERNAME\Downloads"
Add-MpPreference -ExclusionPath "C:\Nexon\MapleStory"

# Verify exclusions were added
Get-MpPreference | Select-Object -ExpandProperty ExclusionPath

# Alternative: Manual configuration
# 1. Open Windows Security > Virus & threat protection
# 2. Click "Manage settings" under Virus & threat protection settings
# 3. Scroll to Exclusions > Add or remove exclusions
# 4. Add folder exclusions for Downloads and MapleStory directories
```

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