Unity - Create a structure with primitives

This tutorial is an exercise in which you can apply
your understanding of GameObjects and
transforms to build a structure out of 3D primitives.
In this tutorial, you will:
● Add primitives to an empty Scene.
● Create an empty GameObject as a parent for
other GameObjects.
● Duplicate GameObjects.
● Create parent-child relationships between
GameObjects using the Hierarchy window.
● Navigate around the Scene in the 3D space.
● Transform the primitives to a given position,
rotation, and scale.

1.Overview
This tutorial is an exercise in which you will build an
architectural GameObject made up of multiple primitives.
This exercise will give you a firm grasp of how to create
and manipulate GameObjects, and it will give you practice
navigating around a Scene.
Here is the structure you will build.
As you build this structure, you might want to change your
view of the Scene to make sure GameObjects are aligned.
For a review, see Navigating the scene.

2.Create an empty GameObject
An empty GameObject is a
placeholder object that can be
created in the Hierarchy. It
does not have a visible
representation in the Scene,
and it can act as a container for
other GameObjects (among
other things to be explained
later).
1. Right-click in the Hierarchy
and select Create Empty.

2. Rename this GameObject to
Monument in the Inspector.
3. Select this new GameObject in
the Scene view. In the Inspector,
reset the position by selecting the
three dots on the right and then
selecting Reset Position. This sets
the position of the center of the
GameObject to 0,0,0, aligning it to
the center of your Scene.

3.Create the steps
1. In the Hierarchy, right-click the Monument
GameObject and select 3D Object > Cube to
create a new cube as a child of Monument.
2. Rename this new GameObject to Floor.

Unity - Create a structure with primitives

3. Right-click on the Floor
GameObject and select
Duplicate. (Shortcut: select
Floor and press Ctrl-D.)
Duplicate Floor six more
times so that you have the
original Floor and seven
duplicates, for a total of
eight floors that are children
of Monument.
3.Create the steps

4.Transform the steps
In these tasks, you will change the Transform Component values
of each of the Floor objects to create the stair-step effect.
1. Select the first Floor child object and change the Transform
Component values in the Inspector as shown below.

2. Do the same for the rest of the Floor objects
using the values indicated below.
Values for Floor (1) GameObject

By now you should have
something similar to this:

You should now have the steps of the monument.

5.Create the walls
1. Create another Cube
primitive as a child of the
Monument GameObject and
rename it to Wall.
2. Change the values in
the Inspector as shown
below.

The wall is now rotated so that it is diagonal across the Floor.

3. Duplicate the wall three
times and change the
Transform Component values
as shown below.
Wall (1) GameObject
Wall (3) GameObject
Wall (2) GameObject

You will now have 4 walls at 45 degrees.

6.Create the roof
1. Create a new
empty
GameObject as a
child of the
Monument
GameObject and
name it Platform.

2. Drag all the floor objects
into the Platform GameObject.
This creates what is called a
nested GameObject, in which
objects are nested at multiple
levels as children of one
GameObject. In this case, the
Monument GameObject is the
parent, and all the Floor
GameObjects are its children.
When you group objects
together like this, you can
manipulate them all together
and make copies of the whole
group while still maintaining
the relationships between
them.

3. Duplicate the Platform GameObject. The duplicate Platform will include duplicate child objects. Rename this copy of
Platform to Roof.
4. Select the Roof and use the Move and Rotate tools to put the roof onto the structure. Try positioning the Roof in the
Scene view without changing the numbers in the Transform Component, but when you are done, the numbers should look
like the ones shown below.

You have created a monument in Unity! Along the way you learned some new
concepts and practiced some old ones, such as:
● Creating an empty GameObject as a container for other GameObjects.
● Duplicating GameObjects.
● Using the Transform Component to manipulate child GameObjects.
● Nesting GameObjects to multiple levels.
● Using the Move and Rotate tools to transform a child GameObject.
Next, you will get a glimpse of the power you have over your GameObjects by
doing more with components.

Unity - Create a structure with primitives

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