Earos Builder Manual

Product Introduction

Earos Builder is a powerful tool for real-time editing within the scene generation interface, allowing developers to directly edit, add, delete, and modify various elements' data during game runtime.This real-time editing capability significantly enhances developer productivity and opens up new possibilities for dynamic environment interaction design.

Changelog - Earos Builder（Beta）

Product Features

3.1. Preparation Work

This section mainly introduces how to configure the Editor plugin package to start using the product.

3.1.1. Download the Plugin Package for UE Engine and Project Data Package

Refer to the official operation guide and download the corresponding plugin package and data package through Earos Launcher.

3.2. Basic Operations

This section mainly introduces how to use the quick menu:

3.3. Feature Display

This section mainly introduces the specific features and tool operations of Earos Builder.

3.3.1. Interface and Layout

After entering the builder, you can freely browse the scene. Use WSAD to move the view forward, backward, left, and right; QE to move the view up and down; the middle mouse button to rotate the view; and the left mouse button to click and drag on the ground to pan the view. Double-click the left mouse button to jump to the mouse position.

After entering edit mode by clicking EnterEditMode on top, you will see an interface with top and bottom toolbars.

Familiarize yourself with the interface layout, including the top: UNDO/REDO, select editing area, save, exit editing; bottom: select elements, delete elements, and various element editing tools (roads, buildings, water bodies, terrain), etc.

3.3.1.1. Main Processes and Operations

Box selection, multi-selection, toggle selection (mouse drag for box selection, shift for multi-selection, ctrl for toggle selection)
Hold and drag to move horizontally
Adjust point height (PageDown/PageUp)
Batch data modification

3.3.2.1. Editing Mode

Enter editing mode by moving view to the desired area and click Enter Edit Mode.

Entering Edit Mode

3.3.2.2. UNDO/REDO

Click the UNDO icon: Allows you to undo the previous action.

Click the REDO icon: Allows you to redo an action that was undone.

3.3.2.3.Save

Click the Save icon to save the current edits.

3.3.2.4. Exit Editor

Click the Exit icon to exit the UGA Editor.

3.3.2.5. Selection Mode

Click the leftmost icon of the toolbar below to select any element in the scene interface to move and delete.

Batch box selection of elements within the editing area

Before selection

After selection

Drag and modify various element data within the range

Click to open the attribute panel of the selected entity

3.3.3. Element Editor

3.3.3.1. Road Editor

Select the Road Editor to display the road toolbox and tool settings panel.

3.3.3.1.1. Road Toolbox

The road toolbox supports two types of roads: Main Street and Highway.

Click to select a road template, then left-click and drag in the scene to create a road according to the selected template. The creation will be instantly displayed.

3.3.3.1.2. Road Tool Parameters

The road tool parameters support pre-setting modifications for different road templates.

LineType: Includes Straight Line and Curve Line.

Elevation: Set the road height above ground level.

Snap: On/off to use road snapping ability.

The icons are, in order: Global Snapping Toggle, Vertex Snapping, Edge Snapping, 90 and 180 Degree Locking.

: On/off to replace roads with available templates.

3.3.3.1.3. Road Edit Interface Parameters

Road editing has added a slider for fine-tuning the road's Z height. Sliding left or right can move it between -20 and 20. Larger values can be entered in the numeric box on the right.

3.3.3.1.4. Road Edit Right Menu

3.3.3.2. Building Editor

Select the Building Editor to display the building toolbox and tool settings panel.

3.3.3.2.1. Building Toolbox

Click to select a building template, then left-click to draw the outline in the scene. Right-click to end and create the building. The corresponding template building will be created and displayed instantly.

3.3.3.2.2. Building Tool Parameters

Height: Sets the height of the building.

3.3.3.3. Water Body Editor

Select a Water Body to display the detail panel.

3.3.3.3.1. Water Body

Click the button to create a water body.

Click to select a water body template, then left-click to draw the outline in the scene. Right-click to end and create the water body. The corresponding template water body will be created and displayed instantly.

3.3.3.3.2. Water Body Shape Alternation

Drag outline in select mode to change shape.

3.3.3.4. Terrain Editor

Select the Terrain Editor to display the terrain toolbox and tool settings panel.

3.3.3.4.1. Terrain Toolbox

The Terrain Toolbox supports various terrain brush functions.

Flatten Brush: Supports terrain flattening in the scene, pushing or pulling all parts of the heightmap to the level below the mouse.
Smooth Brush: Supports terrain smoothing in the scene by averaging the heights of all points within the brush coverage.
Sculpt Brush: Supports terrain sculpting in the scene by raising or lowering the heightmap using the selected brush shape and falloff.