GameObject & Transform

GameObject & Transform

In Unity, a GameObject is the fundamental container representing any item in your game. A GameObject by itself has no visual look, physics, or custom logic. It is just an empty container.

The Transform Component

Every single GameObject in Unity is created with a Transform component. The Transform cannot be removed. It defines:

• Position: Where the object is in the world (X, Y, Z coordinates).
• Rotation: How the object is oriented (measured in degrees around X, Y, and Z axes).
• Scale: How large the object is relative to its default size.

Active vs Inactive State

You can turn GameObjects on or off in the Editor or via script:

• Active: The object is processed by the engine (rendered, updated, subject to physics).
• Inactive: The object is hidden and paused. Children of inactive parents are also considered inactive.

Parent-Child Relationships

You can group GameObjects hierarchically.

• A Parent object acts as a group leader. If you move, rotate, or scale a parent, all child objects move, rotate, and scale with it.
• A Child object's position, rotation, and scale in the Inspector are calculated locally relative to its parent, rather than relative to the global world origin.

TL;DR

• GameObjects are empty containers for features.
• Every GameObject has a non-removable Transform component.
• The Transform controls Position, Rotation, and Scale.
• Inactive GameObjects and their children are disabled.
• Child transforms are calculated relative to their parent's transform.