If you haven’t completed the previous steps yet, please go through the previous tutorial on How to create Block Breaking first.

If the ball falls to the bottom, the game is over.
Let’s assume that the determination method is when it touches the Wall Bottom object.
This time, since there are no colliding objects other than the ball, we omit determining the object type.
Also, it would look unnatural if the fallen Ball object remained, so we will discard it.

Adding Logic Behavior to Wall Bottom

Select Walls/Wall Bottom object
Click the Add Component button in the Inspector window
Select Logic Toolkit/Logic Behavior and add Logic Behavior component
Click the Logic Behavior Edit button to open the Logic Editor window

Edit Wall Bottom’s Logic Behavior

Creating the PubOnCollisionEnter.Callback node

Delete Start node
Click on the graph and press the Spacebar while it has focus to open the node creation menu
Select the Scripts tab
Enter OnCollisionEnter Callback in the search field
Select PubOnCollisionEnter.Callback (Event) from the list

Editing that PubOnCollisionEnter.Callback node

Check Require in Target field

Creating a Collision.gameObject node

Drag and drop the output port of the Arg 0 field of the PubOnCollisionEnter.Callback node to open the node creation menu
Select the Scripts tab
Enter Collision gameObject in the search field
Select Get Collision.gameObject (Compute) from the list

Creating a GameObject.Destroy node

Drag and drop the output port of the Game Object field of the Collision.gameObject node to open the node creation menu
Select the Scripts tab
Enter Destroy in the search field
Select GameObject.Destroy(gameObject) (Action) from the list

Connecting OnCollisionEnter and GameObject.Destroy

Connect by dragging and dropping the execution port of the PubOnCollisionEnter.Callback node to the input port of the GameObject.Destroy node.

Creating a GameObject.SetActive node

Drag and drop the transition port of the GameObject.Destroy node and open the node creation menu
Select the Scripts tab
Enter GameObject SetActive in the search field
Select GameObject.SetActive(bool value) (Action) from the list

Editing that GameObject.SetActive node

Set Canvas/Game Over object in Target field
You can set it in one of the following ways:
- Change Self to Value and set the Canvas/Game Over object in the Object field
- Leave it as Self and drag and drop the Canvas/Game Over object from the Hierarchy window into the Target field
Check Value field