> For the complete documentation index, see [llms.txt](https://mindcodeinteractive.gitbook.io/easy-build-system/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mindcodeinteractive.gitbook.io/easy-build-system/reference/building-manager/building-grid-system.md).

# Building Grid System

Cell-based placement grid with visual rendering, occupancy tracking, and stage progression.

***

### How the Grid Works

The Grid System creates a world-space grid anchored to the [Building Manager's](/easy-build-system/reference/building-manager.md) position.\
Each cell tracks whether it's free or occupied.\
When a part with grid snapping is placed, its cells are marked and their visuals update.\
The grid automatically marks cells on placement and frees them on destruction.

Configure on the [Building Manager](/easy-build-system/reference/building-manager.md) inspector under **Grid Settings**.\
The Grid System requires the **Enable Grid** toggle to be active.

***

### Scripting Examples

Get a cell by grid coordinates:

```csharp
GridCellData cell = BuildingManager.Instance.GridSystem.GetCell(3, 5);
```

Get a cell by world position:

```csharp
GridCellData cell = BuildingManager.Instance.GridSystem.GetCell(worldPosition);
```

Show or hide the grid:

```csharp
BuildingManager.Instance.GridSystem.SetGridVisualsVisible(true);
```

Force rebuild:

```csharp
BuildingManager.Instance.GridSystem.RefreshGrid();
```

Switch rendering mode at runtime:

```csharp
BuildingManager.Instance.GridSystem.SetRenderingMode(GridCellRenderingMode.Instanced);
```

***

### Debug Visualization

The Grid System draws cells in the Scene view, colored by state (green free, red occupied).\
Cell rendering mode and visibility per building mode are configured in the Grid Settings.

Use **Debug Draw Flags** in Grid Settings to control gizmos: Scene View, Game View, or both.


---

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