Build Mode — Merger Plugin

Build Mode

This page describes the runtime building mode — how players interact with the wall and floor systems during gameplay.

---

Overview

When you open the demo map and press Play, you enter the combined building mode. The mode starts with Wall System active by default.

All input is captured by BP_PluginMergerController and forwarded to whichever plugin is currently active.

---

Switching between systems

At the top of the screen, two buttons let you switch between the Wall System and the Floor System.

Button	Activates
Wall System	Wall placement, object placement, wall coloring
Floor System	Floor tile placement, room fill

Switching is handled by BI_UiToMergerController → BP_PluginMergerController :: PluginSwitch.

---

Wall System

UI layout

Area	Location	Purpose
Plugin switch	Top	Switch between Wall System / Floor System
Placeable items	Bottom	Select wall items and objects to place
Color picker	Mid-left	Wall coloring tools

Placing walls and objects

1. Select a wall item from the bottom bar
2. Left-click in the world to place it

Wall coloring

1. Press a color in the color picker on the left
2. Click Wall Paint
3. Click two points on a wall to apply the color between them

Caution

TODO verify: Wall coloring — official source notes “Coming soon. Ask on Discord.” Confirm whether it is fully available in v1.0.

---

Floor System

Placing floor tiles

1. Choose a floor texture from the selector
2. Click PlaceFloor to activate placement
3. Left-click on the ground to place a tile

Filling a room

• Hold Shift while placing floor tiles to automatically fill an entire enclosed room

---

Input reference

Input	Active in	Effect
Left Mouse Button	Both systems	Place wall / place floor tile
Right Mouse Button	Both systems	TODO verify: right-click action for each system
Left Shift	Floor System	Fill entire room

All inputs are routed through BP_PluginMergerController to the active plugin component.

---

TODOs

• TODO verify: is there a way to delete placed walls or floor tiles?
• TODO verify: is undo/redo (Ctrl+Z) supported at runtime?
• TODO verify: right-click action when Wall System is active
• TODO verify: right-click action when Floor System is active
• TODO verify: does the build mode work in packaged/shipping builds or only in PIE (Play in Editor)?
• TODO: add information about integrating the build mode into a custom project
• TODO: add full input reference table once all inputs are confirmed

---

→ Quick Start · Wall-Floor Integration · Examples