Enable or disable a property on a GameObject

Learn how to use a Logic script to enable or disable properties on a GameObject.

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最后更新于 1 天前

This example shows you how to set up a script that enables or disables the gravity of a GameObject. You can also use these steps to alter different properties.

Create a button in your UI Canvas

Select UI Canvas in the Hierarchy panel.
Right-click and select UI > Button to create a new button.

Create a Cube in your scene

Right-click in the Hierarchy panel and select Primitives > Cube to create a new Cube GameObject.
Select the cube. The Inspector window for that cube opens.
Within the Physics component, disable Use Gravity.

Create a new Logic script

In the Project panel, select the My Logic folder.
Select Add (+).
Select Script. Unity Studio creates a new Logic script in the folder.
To rename your script, right click the script and select Rename. Make sure the name doesn't contain spaces.

Add the script to the Cube

Select the Cube from the Hierarchy panel.
From the Inspector window, select Add Component.
Choose your Logic script from the list.

Set up the logic in the Logic Editor

In the Project panel, double-click the Logic script to open the Logic Editor.
Create the following variables:

Unique name :
```
Cube_Rigidbody
```
, Type :
```
Rigidbody
```
Unique name :
```
Button
```
, Type :
```
Object
```

Set up the following logic to enable the gravity when the user clicks the button:

Drag a When event listener into the Logic Editor.
Place a Clicked on node in the When node's Event socket.
Drag the
```
Button
```
variable in the Clicked on node.
Drag a Set variable value action into the When node.
In the variables, expand the
```
Cube_Rigidbody
```
properties. Drag the useGravity property to the first socket of the Set variable value node. Set its value to
```
True
```
.

Example Logic script to set the cube to be non-interactive. — Example Logic script to enable or disable a property of a GameObject.

Connect your script references

In the Hierarchy panel, select the GameObject that has your Logic script attached.
Drag the cube from the Hierarchy panel into the
```
Cube_Rigidbody
```
variable references in your script component.
Drag the button from the Hierarchy panel into the
```
Button
```
variable reference in your script component.
Press Play to test your scene. When you click on the button, it activates gravity on the cube.

提示

Follow the same steps to enable or disable a collider:

Change the variable type from
```
Rigidbody
```
to
```
Collider
```
.
Expand the
```
Collider
```
properties and use the
```
enabled
```
property.

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