Getting started & Basic Navigation

Fio is a hybrid 2D/3D level editor and engine built for rapid block-out, logic wiring, and instant gameplay testing — build a room, drop in a player start, and press Play without leaving the app.

This page covers the absolute basics: getting around the viewports and building your very first playable room.

Fio shows several views at once:

• 3D viewport — a live, rendered view of your level that you fly around like a first-person camera.
• 2D viewports — orthographic Top / Side / Front views for precise placement. Draw and align brushes here.
• Property editor — context-sensitive settings for whatever you have selected (and a Debug Console tab).
• Scene Hierarchy — a tree of every brush and entity in the level.
• Asset Browser — textures and models to drag onto surfaces.

Panels are dockable — drag them around to taste, and use Ctrl + Shift + R to reset the layout if things get messy.

• Free camera / mouselook — hold the Right Mouse Button and use W A S D to fly around.
• Vertical movement — Space rises straight up, C drops straight down (when nothing is selected).
• Zoom — the Mouse Wheel zooms in and out.

• Pan — hold the Right Mouse Button and drag
• Zoom — Mouse Wheel.
• Cycle views — Ctrl + Tab steps through Top, Side and Front.
• Draw a brush — with the Brush tool active, hold the left mouse button and drag out a box.

• Click to select a brush or entity; Ctrl + Click (or Shift + Click) to add to the selection.
• Esc deselects.
• Delete removes the selected object.
• H hides the selection; Shift + H unhides everything.
• Space clones the selected object.

1. Pick the Brush tool, then hold the left mouse button and drag a box in a 2D view.
2. Click the Room button Room to turn that box into a hollow room — walls, floor and ceiling are created and a light is placed automatically.
3. Right-click inside the room and choose PlayerStart from the menu to set where the player spawns.
4. Press F5 (or the Play button) to jump straight into the level.
5. Press Esc to return to the editor.

That's the whole loop: block out → add a player start → play → tweak → repeat. From here, add Entities (Things) like monsters and pickups, and wire them together with the Triggers & I/O Logic System.

In a hurry? The Procedural level generator builds an entire playable space in one click.

(The F-key shortcuts are configurable under Settings → Shortcuts.)

Press F5 to play. Standard first-person controls apply:

• W A S D — move · Mouse — look · Space — jump · E — use / activate (doors, use triggers, level changers).
• ` — open the in-game Debug Console · Esc — return to the editor.

Handy in-play toggles:

• Basic concept: Brushes — the fundamental building blocks
• Entities (Things) — monsters, pickups, lights, speakers and more
• Triggers & The I/O Logic System — make things happen
• Property editor · Asset Browser · Scene Hierarchy