書名： Mastering UI Development with Unity
作者名： Ashley Godbold
本章字?jǐn)?shù)： 531字
更新時間： 2021-08-27 18:43:15

Examples

Now let's jump into some examples! We'll be creating a layout for a basic heads-up-display (HUD) and a background image that stretches with the screen and scales at multiple resolutions.

Before we begin setting up our UI, let's set up our project and bring in the art assets we will need.

We'll begin by setting up our project:

Create a new Unity Project and name it Master Unity UI Project. Create it in the 2D mode.

We're selecting 2D Mode because it will make importing our UI sprites a lot easier. When in 2D Mode, all images import as Sprite (2D and UI) images rather than Texture images, as they do in 3D Mode. You can change to 3D Mode at any time by navigating to Edit | Project Settings | Editor and changing Mode to 3D.

Create three new folders named Scenes, Scripts, and Sprites:

You don't need the Editor folder, but, if you'd like it, it was created following the steps in the Method 1: PlayerPrefs.DeleteAll() section of Chapter 1, Designing User Interfaces.

Create a new scene and name it Chapter2.unity; ensure that you save it in the Scenes folder.

We’ll be using art assets that I've modified from free art assets found at the following:
https://opengameart.org/content/free-game-gui
Chapter2/Sprites folder, you'll find the catSprites.png, pinkBackground.png, and uiElements.png images.

We'll be importing the sprites to the project and slicing the sprite sheets into their separate image regions. If you already know how to slice sprite sheets, do so now for the catSprites image and the uiElements image and proceed to the Laying out the Basic HUD section. If you are not familiar with the process, follow these steps:

Drag the three sprites into the Sprites folder.

Select the catSprites image, hold Ctrl, and click on the uiElements image so that both are selected.

Now, in the Inspector, select Multiple for Sprite Mode. Then hit Apply. This will cause both the catSprites and the uiElements images to be considered a sprite sheet.

Note that the Inspector says that 2 Texture 2Ds are selected, because we have selected two images.
Now select the catSprites image and open the Sprite Editor.
With the Sprite Editor open, select Slice.
Now change the slice properties so that the Slice Type is Automatic and the sprite Pivot is applied to the Bottom. Once done, hit Slice.
You should now see the sprite broken in to three separate regions. Hit Apply to save the changes.
Now if you click on the arrow on the catSprites image in the project folder view, you should see the individual images.

Complete steps 10–14 for the uiElements image, but make the pivot point in the Center.

Now that we have our project and sprites set up, we can begin with the UI examples.

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Mastering UI Development with Unity

Examples