Scalar

A Swift game engine with high-performance C++ core libraries.

Overview

Scalar is a modern game engine built primarily in Swift, leveraging powerful C++ libraries for performance-critical systems like physics, networking, and rendering.

Setup

Prerequisites

• macOS 13+
• Swift 5.9+
• CMake (for building C++ engine core)

Building the C++ Engine Core

# First time setup - build the C++ engine library
cmake --preset macos-arm64-debug
cmake --build build/macos-arm64-debug

Building the Swift Application

# Build the Swift executable
xcrun swift build

# Run the application
xcrun swift run Scalar

Development

# Run in debug mode
./.build/debug/Scalar

# Clean build (order matters - C++ core must be built first)
xcrun swift package clean
rm -rf build/
cmake --preset macos-arm64-debug
cmake --build build/macos-arm64-debug
xcrun swift build

Dependencies

• SDL3
• bgfx
• flecs
• Bullet Physics
• GameNetworkingSockets

All handled by vcpkg (automatic).