AimSight

A crosshair overlay tool for Windows games that renders customizable aim assistance visuals on top of any game running in windowed or borderless mode.

Features

• Transparent Overlay: Click-through crosshair overlay using WPF and Win32 APIs
• Customizable Crosshairs: Multiple styles (Dot, Cross, Circle, CrossCircle), colors, and sizes
• Global Hotkey: Toggle overlay visibility with Ctrl+Shift+H
• System Tray: Runs quietly in background while gaming
• Multi-Monitor Support: Select which monitor to display the overlay on
• Settings Persistence: Your preferences are saved automatically

Technology Stack

Component	Technology
Framework	.NET 8.0 WPF (C#)
Settings	Newtonsoft.Json
Window Interop	Win32 API (user32.dll)

Project Structure

CrossHairPlus/
├── CrossHairPlus.sln          # Visual Studio solution
├── CrossHairPlus/             # Main WPF application
│   ├── Services/              # Settings and process detection
│   ├── Renderers/             # Crosshair rendering
│   ├── Models/                # Data models
│   └── Utils/                 # Win32 interop
└── README.md

Build Instructions

Prerequisites

• Visual Studio 2022 or later
• .NET 8.0 SDK

Building

1. Clone the repository
2. Open CrossHairPlus.sln in Visual Studio
3. Select Release configuration
4. Build solution (Ctrl+Shift+B)

The built executable will be located at:

CrossHairPlus/bin/Release/net8.0-windows/AimSight.exe

Usage

1. Launch AimSight.exe
2. Configure your crosshair style, color, and size
3. Select which monitor to display the overlay on
4. Press Ctrl+Shift+H to toggle the overlay visibility

Important: For best results, run your game in borderless windowed or windowed mode. Running in fullscreen exclusive mode may cause the overlay to not display properly or appear behind the game window.

Architecture

The application uses a transparent WPF overlay window that is positioned above games using Win32 APIs:

1. Overlay Window: A click-through, always-on-top WPF window
2. Win32 Integration: Uses SetWindowPos and extended window styles to maintain topmost position
3. Hotkey Handling: Global hotkey registration for Ctrl+Shift+H to toggle visibility
4. Settings Persistence: JSON-based settings stored in %APPDATA%\AimSight\settings.json

Crosshair Types

• Dot: Simple centered dot
• Cross: Four lines extending from center with a gap
• Circle: Hollow circle outline
• CrossCircle: Circle with cross lines through center

Recent Updates

• WPF Overlay Architecture: Replaced DirectX hook injection with simpler transparent WPF overlay
• Improved rendering and visibility: Fixed issues where the crosshair would not display correctly
• Size scaling fixes: Corrected crosshair size scaling across different crosshair types
• Multi-monitor support: Added ability to select which monitor displays the overlay
• Hotkey improvements: Changed to Ctrl+Shift+H for toggle

Future Development

Planned improvements for upcoming releases:

• Process injection: Re-enable DirectX hook injection for fullscreen exclusive game support
• Broader game compatibility: Extended support through game-specific detection
• Custom crosshair profiles: Save and load multiple crosshair configurations
• Game-specific settings: Per-game crosshair preferences that auto-detect running games

License

MIT License - see LICENSE file for details.