Why use Terrain?
Terrain uses volumetric cells rather than ordinary Parts. FillBlock is useful for generating land or water in a region, and editing it changes the shared place world.
Try it in Roblox Studio
Run this Script from ServerScriptService in a disposable Studio test place. It edits Workspace.Terrain, so use a test copy before changing an existing map.
Syntax
workspace.Terrain:FillBlock(cframe, size, Enum.Material.Grass)Examples
Terrain editing
Add a small grass block to a test map.
local terrain = workspace.Terrain
terrain:FillBlock(
CFrame.new(0, 0, 0),
Vector3.new(16, 8, 16),
Enum.Material.Grass
)- workspace.Terrain is the place’s Terrain instance.
- CFrame and Vector3 define the region to fill; the material determines its appearance and physical material.
- Terrain is voxel based, so its final boundary may not match a Part’s exact dimensions.
Best practices
- Test terrain generation in a copy of the place.
- Avoid repeatedly filling large regions during every frame.
Runtime & versions
Luau host; Roblox engine examples require Roblox Studio. Feature availability depends on the language and runtime version used by your project; consult the official reference below.
Luau documentation