Source for fully featured AAA Open 3D Engine

Updates to this readme

July 06, 2021

• Switch licenses to APACHE-2.0 OR MIT

May 14, 2021

• Removed instructions for the 3rdParty zip file and downloader URL. This is no longer a requirement.
• Updated instructions for dependencies
• Links to full documentation

April 7-13, 2021

• Updates to the 3rdParty zip file

March 25, 2021

• Initial commit for instructions

Download and Install

This repository uses Git LFS for storing large binary files. You will need to create a Github personal access token to authenticate with the LFS service.

To install Git LFS, download the binary here: https://git-lfs.github.com/.

After installation, you will need to install the necessary git hooks with this command

git lfs install

Create a Git Personal Access Token

You will need your personal access token credentials to authenticate when you clone the repository and when downloading objects from Git LFS

Create a personal access token with the 'repo' scope.

During the clone operation, you will be prompted to enter a password. Your token will be used as the password. You will also be prompted a second time for Git LFS.

(Recommended) Verify you have a credential manager installed to store your credentials

Recent versions of Git install a credential manager to store your credentials so you don't have to put in the credentials for every request.

It is highly recommended you check that you have a credential manager installed and configured

For Linux and Mac, use the following commands to store credentials

Linux:

git config --global credential.helper cache

Mac:

git config --global credential.helper osxkeychain

Clone the repository

> git clone https://github.com/o3de/o3de.git
Cloning into 'o3de'...

# initial prompt for credentials to download the repository code
# enter your Github username and personal access token

remote: Counting objects: 29619, done.
Receiving objects: 100% (29619/29619), 40.50 MiB | 881.00 KiB/s, done.
Resolving deltas: 100% (8829/8829), done.
Updating files: 100% (27037/27037), done.

# second prompt for credentials when downloading LFS files
# enter your Github username and personal access token

Filtering content: 100% (3853/3853), 621.43 MiB | 881.00 KiB/s, done.

If you have the Git credential manager core or other credential helpers installed, you should not be prompted for your credentials anymore.

Building the Engine

Build Requirements and redistributables

Windows

• Visual Studio 2019 16.9.2 minimum (All versions supported, including Community): https://visualstudio.microsoft.com/downloads/
  • Install the following workloads:
    • Game Development with C++
    • MSVC v142 - VS 2019 C++ x64/x86
    • C++ 2019 redistributable update
• CMake 3.20 minimum: https://cmake.org/download/

Optional

• Wwise - 2021.1.1.7601 minimum: https://www.audiokinetic.com/download/
  • Note: This requires registration and installation of a client application to download
  • Make sure to select the SDK(C++) component during installation of Wwise
  • You will also need to set an environment variable: set LY_WWISE_INSTALL_PATH=<path to Wwise version>
  • For example: set LY_WWISE_INSTALL_PATH="C:\Program Files (x86)\Audiokinetic\Wwise 2021.1.1.7601"

Quick Start Build Steps

1. Create a writable folder to cache 3rd Party dependencies. You can also use this to store other redistributable SDKs.

   For the 0.5 branch - Create an empty text file named 3rdParty.txt in this folder, to allow a legacy CMake validator to pass

2. Install the following redistributables to the following:

   • Visual Studio and VC++ redistributable can be installed to any location
   • CMake can be installed to any location, as long as it's available in the system path
   • WWise can be installed anywhere, but you will need to set an environment variable for CMake to detect it: set LY_WWISE_INSTALL_PATH=<path to WWise>

3. Navigate into the repo folder, then download the python runtime with this command

   For the 0.5 branch - Set this environment variable prior to the get_python command below:

   set LY_PACKAGE_SERVER_URLS=https://d2c171ws20a1rv.cloudfront.net
   

   python\get_python.bat
   

4. Configure the source into a solution using this command line, replacing and <3rdParty cache path> to a path you've created:

   cmake -B <your build path> -S <your source path> -G "Visual Studio 16" -DLY_3RDPARTY_PATH=<3rdParty cache path> -DLY_UNITY_BUILD=ON -DLY_PROJECTS=AutomatedTesting 
   

   Note: Do not use trailing slashes for the <3rdParty cache path>

5. Alternatively, you can do this through the CMake GUI:

   1. Start cmake-gui.exe
   2. Select the local path of the repo under "Where is the source code"
   3. Select a path where to build binaries under "Where to build the binaries"
   4. Click "Configure"
   5. Wait for the key values to populate. Fill in the fields that are relevant, including LY_3RDPARTY_PATH and LY_PROJECTS
   6. Click "Generate"

6. The configuration of the solution is complete. To build the Editor and AssetProcessor to binaries, run this command inside your repo:

   cmake --build <your build path> --target AutomatedTesting.GameLauncher AssetProcessor Editor --config profile -- /m
   

7. This will compile after some time and binaries will be available in the build path you've specified

Setting up new projects

1. While still within the repo folder, register the engine with this command:

   scripts\o3de.bat register --this-engine
   

2. Setup new projects using the o3de create-project command. In the 0.5 branch, the project directory must be a subdirectory in the repo folder.

   <Repo path>\scripts\o3de.bat create-project --project-path <your new project path>
   

3. Register the engine to the project

   <Repo path>\scripts\o3de.bat register --project-path <New project path>
   

4. Once you're ready to build the project, run the same set of commands to configure and build:

   cmake -B <your project build path> -S <your new project source path> -G "Visual Studio 16" -DLY_3RDPARTY_PATH=<3rdParty cache path>
   
   // For the 0.5 branch, you must build a new Editor for each project:
   cmake --build <your project build path> --target <New Project Name>.GameLauncher Editor --config profile -- /m
   
   // For all other branches, just build the project:
   cmake --build <your project build path> --target <New Project Name>.GameLauncher --config profile -- /m
   

For a tutorial on project configuration, see Creating Projects Using the Command Line in the documentation.

License

For terms please see the LICENSE*.TXT file at the root of this distribution.