Build Mode (Editor Panel) — Wall Plugin

Build Mode – Editor Panel Reference

The CodPassionWall editor panel lets you place and paint walls interactively in the Unreal Editor viewport, without writing any Blueprint code.

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Activating the editor panel

TODO verify

Confirm the exact location of the panel activator in UE 5.x — e.g. the Modes panel dropdown, a toolbar button, or a separate plugin panel tab.

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Panel controls

Wall dimensions

Control	Default	Description
Height	260.0	Wall height in Unreal units (cm) applied to newly placed walls.
Width	20.0	Wall width in cm applied to newly placed walls.

Note

These values affect walls placed through the panel. The PlaceableWall_BP Blueprint actor has a separate default wall_height of 200.0. If you place walls both via the panel and manually, make sure the heights match. See Troubleshooting.

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Place Wall mode

Click Place Wall to enter wall placement mode.

Workflow:

1. Move the cursor in the viewport — a live wall preview follows.
2. Left-click to set the wall’s start point. A wall actor is spawned.
3. Move the cursor to set the end position. The wall preview updates in real time.
4. Left-click again to finalize the wall.

Cancelling:

• Right-click at any point to cancel and remove the preview wall.
• Clicking Place Wall again also deactivates placement mode.

Snap behaviors:

• If the cursor lands on an existing wall, the point snaps to that wall’s bottom center automatically.
• If Snap to Grid is enabled, the point snaps to the nearest grid intersection. See Grid and Snapping.

Undo/redo: Placed walls are part of the Unreal undo history. Press Ctrl+Z to undo the last placed wall.

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Grid snapping

Control	Default	Description
Snap to Grid	Off	Enables grid snapping during placement.
Grid Size	100.0	Snap interval in cm. Minimum value is 1.0.

See Grid and Snapping for full details.

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Paint Wall mode

Click Paint Wall to enter wall painting mode.

Workflow:

1. Configure the paint settings in the panel (see below).
2. Click Paint Wall to activate.
3. Left-click on a wall to set the paint start point.
4. Left-click on the same wall to set the end point and apply the paint.

Cancelling:

• Right-click cancels the current paint operation.
• Clicking Paint Wall again also deactivates the mode.

Note

Both clicks must land on the same wall. Clicking a second wall rejects the input and resets to the first-click state.

Undo/redo: Paint operations are part of the undo history.

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Paint settings

Control	Default	Description
Draw Mode	Color	Choose Color to paint a solid color, or Texture to tile a texture.
Color	White	The solid color to paint. Click the color swatch to open a color picker. Visible in Color mode only.
Texture	(none)	The texture asset to tile. Use the ... button to open the Content Browser picker. Visible in Texture mode only.
X Scale	1.0	Texture horizontal tiling scale. Visible in Texture mode only.
Y Scale	1.0	Texture vertical tiling scale. Visible in Texture mode only.
No Y Wrapping	Off	Prevents the texture from tiling vertically. Visible in Texture mode only.
Fill	Off	If enabled, paints the entire wall surface instead of a region between two points.
Merge Distance	0.0	Snap tolerance in cm for merging draw region boundaries to nearby wall endpoints.

See Materials and Wall Paint for a full explanation of these settings.

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Utility buttons

Button	Description
Clear Walls	Destroys all AWallLineActor instances in the currently active world. This action is immediate and destructive — use with care.
Save Walls	Calls UWallGameSubsystem::SaveWalls using the default slot name (derived from the current map name).
Load Walls	Calls UWallGameSubsystem::LoadWalls and spawns wall actors from the saved data.

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Related pages

• Quick Start — step-by-step first wall
• Grid and Snapping — grid snap details
• Materials and Wall Paint — painting details
• Doors and Windows — adding reveals in the editor