description: Apply this rule for any MCP Tool call for the Unreal Engine editor globs: alwaysApply: false

Working with Unreal Engine

• We are using Unreal Engine 5.5.4, so be extremely cautious of using deprecated or outdated APIs, includes or practices.

Coordinate System

In the Unreal Editor, the following colors are associated with the coordinate axes:

X-axis: Red Y-axis: Green Z-axis: Blue

UE's Z-up, left-handed coordinate system is defined as follows:

The Z-axis determines how far up and down along a vertical line an actor is located. Positive values are upwards. The Y-axis determines how far to the left or right an actor is located. Positive values are to the right. The X-axis determines how far forward or backward an actor is located. Positive values are forward.

Units

Unreal Engine (UE) defaults to the following International System (SI) units for measurement:

Quantity Unit Distance/Length Centimeters (cm) Mass Kilograms (kg) Time Minutes (min), Seconds (s) Angles Degrees (deg) Speed/Velocity Meters per Second (m / s) Temperature Celsius (C) Force Newtons (N) Torque Newton Meters (N • m)