Player control of a 3D GameObject (and limiting the movement within a rectangle)

Many of the 3D recipes in this chapter are built on this basic project, which constructs a scene with a textured terrain, a Main Camera, and a red cube that can be moved around by the user with the four directional arrow keys. The bounds of movement of the cube are constrained using the same technique as in the previous 2D recipe.

How to do it...

To create a basic 3D cube controlled game, follow these steps:

1. Create a new, empty 3D project.

2. Once the project has been created, import the single Terrain Texture named SandAlbedo (it was named GoodDirt in Unity 4). Choose menu: Assets | Import Package | Environments, deselect everything, and then locate and tick the asset: Assets/Environment/TerrainAssets/SurfaceTextures/ SandAlbedo.psd.

   Tip

   You could have just added the Environment Asset Package when creating the project—but this would have imported 100s of files, and we only needed this one. Starting a project in Unity...