Unity

Unity

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We've published a development tips for Unity, a game engine that many developers use to create games.

In-page links
introduction
Editor settings
Game Release
system
UI (user interface)
User input
Sprite (2D)
scene
sound effect
BGM
prefab
Maps (2D)
Collision Handling (2D)
texture
file
Localization (multilingual)

introduction

About Unity Tips

About Unity Tips

This section describes the specifications and rules for Unity Tips posted on this site.
About Unity

About Unity

A brief description of Unity where you can do game development.
Create a Unity Account

Create a Unity Account

You'll need to create an account to develop with Unity. We'll walk you through the steps.
Download and install Unity

Download and install Unity

Install Unity so you can use Unity as your development environment.
Create a Unity project

Create a Unity project

Create a project to actually develop the game.
Get started with the sample project (3D Sample Scene HDRP)

Get started with the sample project (3D Sample Scene HDRP)

Let's create a sample project and run it to visualize how the game works.
Get started with the tutorial example project (2D Platformer Microgame)

Get started with the tutorial example project (2D Platformer Microgame)

Let's create a sample project and run it to visualize how the game works.

Editor settings

Edit codeChange editor

Edit codeChange editor

Learn how to change the script editor that launches when you try to edit code from the Unity Editor.
Make Japanese the Unity Editor

Make Japanese the Unity Editor

The Unity Editor is initially written in English, so we will Japanese it.

Game Release

Output a game for Windows

Output a game for Windows

Provides step-by-step instructions for outputting a game created with Unity to a format that can run on Windows.
Use IL2CPP to precompile a game for Windows

Use IL2CPP to precompile a game for Windows

By using IL2CPP, it is compiled to native code in advance to improve performance and security.
Output a web-optimized (WebGL) game

Output a web-optimized (WebGL) game

Provides step-by-step instructions for outputting a game created with Unity to a format that can be run in a web browser.
Running Unity WebGL with ASP.NET Core

Running Unity WebGL with ASP.NET Core

Learn how to output a game made with Unity in WebGL and run it on a site running ASP.NET Core.

system

Change the game resolution

Change the game resolution

Learn how to set the resolution when you start the game and how to change the resolution during gameplay.
Switch between windowed and full-screen mode

Switch between windowed and full-screen mode

Learn how to switch between windowed and full-screen mode while the game is running.
Run the game even when the window is inactive

Run the game even when the window is inactive

Initially, the game pauses when a window, including the Unity Editor, is in an inactive state. Learn how to do this so that the window works even when it is inactive.
Exit the game

Exit the game

Describes how to programmatically exit the game.

UI (user interface)

カメラ(2D)とキャンバスを合わせる

カメラ(2D)とキャンバスを合わせる

初期状態では UI を配置するキャンバスの表示領域とゲームを表示するカメラ(2D)の表示領域が別々なのでそれを合わせます。
Unity UI のボタンを使用する

Unity UI のボタンを使用する

ボタンはユーザーがメニューなどで選択肢としてクリックしてもらうために使うこともできます。またデバッグやテストでも活用できます。
Unity UI のドロップダウンを使用する

Unity UI のドロップダウンを使用する

ドロップダウンを使用することにより多数の選択項目を省スペースに配置して選択させることができます。
ドロップダウンアイテムの一覧を表示したときに選択しているアイテムが先頭にくるようにスクロールする

ドロップダウンアイテムの一覧を表示したときに選択しているアイテムが先頭にくるようにスクロールする

ドロップダウンアイテムの一覧を表示したとき選択アイテムの位置に関わらず一番上のアイテムが表示されます。これを選択しているアイテムが先頭にくるように表示する方法について説明します。
UI オブジェクトからフォーカスが外れないようにする

UI オブジェクトからフォーカスが外れないようにする

通常 UI オブジェクト以外をクリックするとフォーカスが外れてしまいますが、疑似的にフォーカスが外れないように対応します。
どのプラットフォームでも同じフォントを使用できるようにする

どのプラットフォームでも同じフォントを使用できるようにする

動作するプラットフォームごとに使用できるフォントは異なりますがどの環境でも同じフォントが使用できるようにする方法について説明します。
WebGL で日本語を入力できるようにする

WebGL で日本語を入力できるようにする

入力フィールドを配置したプログラムを WebGL で公開した際、直接日本語を入力することができないためその対処法を実装します。
UI オブジェクトの選択をループさせる

UI オブジェクトの選択をループさせる

オブジェクトの通常配置では入力した方向にあるオブジェクトしか選択できませんが、ここでは下を入力したときに反対側にある上のオブジェクトを選択できるようにしています。
ボタンの選択をアニメーションさせて分かりやすくする

ボタンの選択をアニメーションさせて分かりやすくする

ボタンを選択したときにボタンを大きくさせて見た目的に分かりやすくします。

User input

Introducing the Input System Package

Introducing the Input System Package

To accept input from the user, Unity has an "Input Manager" that dates back to the early days, but it is set up to use the new "Input System Package" introduced in the middle of the version.
Operating with the Keyboard (Input System Package Version)

Operating with the Keyboard (Input System Package Version)

Describes how to control a game with the keyboard.
Operating with the mouse (Input System Package Version)

Operating with the mouse (Input System Package Version)

Learn how to control your game with the mouse.
Controlling with a Gamepad (Input System Package Version)

Controlling with a Gamepad (Input System Package Version)

Learn how to control your game with a gamepad.
Manage multiple gamepads

Manage multiple gamepads

You can handle several gamepads at the same time. It can be used in situations where multiple people play such as local multiplayer.
Operation with a joystick (Input System packaged version)

Operation with a joystick (Input System packaged version)

Learn how to control the game with a joystick.
Use action maps to assign buttons to game behaviors

Use action maps to assign buttons to game behaviors

You can use action maps, for example, to assign controller buttons to actions such as movement and jumping.
Set up an action map dynamically

Set up an action map dynamically

This section describes how to dynamically set an action map when you want to freely assign keys and buttons, such as key config.
Use touch-optimized input controls with On-Screen Control

Use touch-optimized input controls with On-Screen Control

The input system package has On-Screen Control, a mechanism for input operations on touch-optimized devices.
Customize the On-Screen Control to implement the D-pad

Customize the On-Screen Control to implement the D-pad

On-Screen Control can be customized on your own. Let's implement a different D-pad than stick input.

Sprite (2D)

Displaying sprites (images)

Displaying sprites (images)

This section describes how to display sprites (images) on the game screen. It's easy because you can only display images on the Unity Editor.
Move, rotate, and scale sprites

Move, rotate, and scale sprites

Let's move the sprite with the keyboard as if you were moving the character in a game.
Implement sprite sheet animations

Implement sprite sheet animations

Let's create a sprite animation that can switch between multiple images in a row and make it look as if the picture is moving.
Change the sprite image while the game is running

Change the sprite image while the game is running

When you're playing a game, you'll probably see that the image of the sprite changes frequently. This section describes how to change the image of a sprite while the game is running.
Implement a walking animation for a 4-way sprite character

Implement a walking animation for a 4-way sprite character

Let's implement an animation in which the character walks while moving in four directions in the overhead viewpoint field, which is common in RPGs.
Implement 8-way sprite character walking animation

Implement 8-way sprite character walking animation

Let's implement an animation in which the character walks while moving in 8 directions in the overhead view field, which is common in RPGs.

scene

Switch between scenes

Switch between scenes

Implements scene transitions such as transitions from the start scene to the gameplay scene, which is common in games.
Add a scene

Add a scene

Describes how to add another scene to the current scene and display it at the same time.
Change the background color of a scene

Change the background color of a scene

Describes how to change the background color of a scene.

sound effect

Play, pause, or stop a single sound effect

Play, pause, or stop a single sound effect

This section describes how to play, pause, and stop sound effects at any time.
Play multiple sounds at the same time

Play multiple sounds at the same time

AudioSource alone could only play a single sound, but you can use AudioClip to play multiple sounds at the same time with a single piece of audio data.
Control the number of simultaneous sound effects played

Control the number of simultaneous sound effects played

PlayOneShot allows you to layer sounds, but they tend to be louder because they don't have an upper limit. This time, I will try to control the number of simultaneous playback so that the volume does not become too loud.

BGM

Play, pause, stop, and loop background music

Play, pause, stop, and loop background music

This section describes how to play, pause, stop, and loop background music.
Loop background music with intro

Loop background music with intro

Some BGM loops play the intro part only once and the loop starts in the middle. In this article, we'll try to do that in Unity.

prefab

Create Prefabs to manage a large number of objects

Create Prefabs to manage a large number of objects

Objects can be duplicated and placed, but if you want to change the settings, you must change as many duplicates as you want. If you use a prefab, you can manage it collectively as a copy source setting.
Create an object based on a Prefab from a script

Create an object based on a Prefab from a script

We were able to place objects from the prefab in the initial placement, but I think there are cases where you want to place additional objects during the game. Here I would like to place an object from the prefab by script.

Maps (2D)

Create a top-down 2D map using standard Unity tilemaps

Create a top-down 2D map using standard Unity tilemaps

Let's create a top-down 2D map like a 2D RPG with Unity's standard feature of tilemaps.
Use 2D Tilemap Extras to create maps with autotiles

Use 2D Tilemap Extras to create maps with autotiles

It is troublesome to find and place combinations every time when placing maptips that connect up, down, left and right. Let's use auto tiles to automatically connect maptips.
Use 2D Tilemap Extras to create animated tiles

Use 2D Tilemap Extras to create animated tiles

RPG tile maps may use expressions that show movement by switching map chips, such as the flow of a waterfall or the movement of waves. Here, we will try to realize that animation.
Use 2D Tilemap Extras to create maps with animated autotiles

Use 2D Tilemap Extras to create maps with animated autotiles

Try creating a map with animated auto tiles by combining auto tiles and animated tiles.
Implement hit detection with tilemaps

Implement hit detection with tilemaps

Implements a process that prevents objects from colliding with and overlapping with the tilemap when they are moved.
Implement hit detection for each type of MapChip

Implement hit detection for each type of MapChip

Hit judgment is performed for the specified type of maptip from among the laid mapchips.

Collision Handling (2D)

Determine if objects collide with each other (2D)

Determine if objects collide with each other (2D)

This section describes how to implement the collision detection necessary for bullets that are common in games to hit characters, characters to each other, etc.
Collision Handling with Standard Physics (2D)

Collision Handling with Standard Physics (2D)

For example, when a player character hits another character, it pushes the opponent and leaves it to the physics of the Unity standard function.

texture

Use render textures to display the contents of another scene as textures

Use render textures to display the contents of another scene as textures

If you want to display a different scene, for example, on a display in your game, you can use a render texture.

file

Use PlayerPrefs to read and write data

Use PlayerPrefs to read and write data

Use PlayerPrefs to save and load play data, settings, and more.
Write data to Unity's recommended folder path specified by persistentDataPath

Write data to Unity's recommended folder path specified by persistentDataPath

You can save your game's configuration data to any location, but for now we'll use persistentDataPath to save it to Unity's recommended folder path.

Localization (multilingual)

Switching the text of a text object to match the environment in which the text is multilingually supported

Switching the text of a text object to match the environment in which the text is multilingually supported

In order for your game to be played not only in Japan but also overseas, it is necessary to localize the entire game so that people in that country can play it. Here, the text object placed as one of them is multilingual.
Switch images from image objects to match country or language

Switch images from image objects to match country or language

Localization can be done not only for text but also for images. This toggle is useful if you have images that vary by country or culture, or if you are imaging text.
Change locale at any time

Change locale at any time

The official Unity package Localization automatically sets the locale according to the parameters and environment when the game starts, but we will explain how to change the locale at any time, such as when you want to change the display language during the game.
Get a list of locales that you've created

Get a list of locales that you've created

Describes how to retrieve the list of locales created by the Localization package. This is useful when you want users to select from a list.
Get localized text and assets at any time

Get localized text and assets at any time

This section describes how to retrieve localized text programmatically at any timing instead of automatically switching it in the UI.