Terrain Generator

It is necessary to create a terrain to a game. In Unity, it is easy to create a terrain by the built-in editor. It is recommended to import a terrain asset package if there is no texture for the terrain.

Create a Terrain

• You can create a terrain by clicking GameObject, 3D object and Terrain on the toolbar.
• You can change the attributes of the terrain, e.g. width, height, etc., on the inspector view.

• There are 7 basic options to edit the terrain.

Raise / Lower Terrain

• Choose the option Raise / Lower Terrain, select the one brush, and start to draw on the terrain (raise the terrain).
• If you draw with Shift key, it would lower the terrain.

Paint Height

• Choose the option Paint Height, select the one brush, and start to draw on the terrain.
• The difference between Raise / Lower Terrain and Paint Height is the second one would limit the raising height. You can set the height limitation on the Settings.

Smooth Height

• Choose the option Smooth Height, select the one brush, and start to draw on the terrain. It would smooth the convex of the terrain.

Paint Texture

• [Optional] Download and import the terrain asset package if there is no texture for terrain. (Here, we use Nature Volumn 1 as the example.)
• Choose the option Paint Texture.
• Add the texture on Textures by clicking Edit Textures, select a type of textures with its normal type, and click Add.

• You can view the textured terrain. It looks like to paste a image on the terrain repeatedly. You could simply change the tile size (x = 15 and y = 15 by default) to scale the image size to be pasted to the terrain.

Place Trees

• [Optional] Download and import the tree asset package (Here, we use Nature Starter Kit 2 as the example.)
• Choose the option Place Trees, and preapre a tree by clicking Edit Trees, Add Tree, Tree Prefab.

• Drag the tree prefab from Inspector view into the scene. You can also add trees to where you want to place by clicking.

Paint Details

• [Optional] Download and import the asset package (Here, we use Nature Starter Kit 2 as the example.)

• You can also add others details into the scene, for example, bushes, rocks, etc.
• The procedure to import the asset package is similar with the previous Place Trees. Choose Paint Details, click Edit Details, and Add Grass Texture or Add Detail Mesh.

• Choose the desired brush, and draw it on the desired place.

Terrain Settings

• Choose Terrain Settings, there are several basic environment configurations.

• Base Terrain
  • Pixel Error : The error for showing the 3D object on the view. It represents LOD (Level of Development / Level of Detail). While the value is more higher, the object pixel is shown in more detailed.
  • Base Map Dist : The distance is set for higher resolution zone.
  • Cast Shadows : It is the flag for controling the shadow from the light projection.
• Wind Settings
  • Speed : wind speed
  • Size : the area affetced by the wind
  • Bending : the angle changed by the wind
  • Grass Tint : the color tint setting for the grass and the grid
• Resolution : the configuration for width, length, height of the terrain and it related resolutions