Publishing to OPPO Mini Games

Note: Some platforms only have Chinese documentation available when visiting the platforms website. It may be necessary to use Google Translate in-order to review the documentation.

Cocos Creator 3D officially supports the release of games to the OPPO Mini Games.

Environment Configuration

  • Download OPPO Mini Game Debugger and install it on your Android device (Android Phone 6.0 or above is recommended)

  • Install nodejs-8.1.4 or above, globally

  • Determine whether you need to install the Debugging Tools according to your own development needs.

Release Process

  1. Use Cocos Creator 3D to open the project that needs to be released. Select OPPO Mini Game in the Platform dropdown of the Build panel.

    Click on the oppo-mini-game below to expand the parameter configuration of OPPO Mini Game.

The specific filling rules for the relevant parameter configuration are as follows:

  • Game Package Name: is filled in according to the user's needs. It's required.

  • Desktop Icon: is required. Click the search icon button at the back of the input box to select the icon you want. When building, the Desktop Icon will be built into the OPPO Mini Game project. It is suggested to use PNG images for the Desktop Icon.

  • Game Version Name: is required. Game Version Name is the real version, such as: 1.0.0.

  • Game Version Number: is required. Game Version Number is different from the Game Version Name, and the Game Version Number is mainly used to distinguish the version update. Each time when you submit audit, the game version number is at least 1 higher than the value of the last submitted audit. It must not be equal to or less than the value of the last submitted audit, and it is recommended that the Game Version Number be recursively incremented by 1 each time when the audit is submitted.

    Note: The Game Version Number must be a positive integer.

  • Supported Minimum Platform Version Number: is required. According to the requirements for OPPO Mini Games, this value must be greater than or equal to 1031.

  • Small Packet Mode: is optional. The in-package volume of the mini-game contains code and assets that cannot exceed 10M, and assets can be loaded via network requests. Small Packet Mode is to help users keep the script files in the mini game package, other assets are uploaded to the remote server, and downloaded from the remote server as needed. And the download, cache and version management of remote assets, Cocos Creator 3D has already helped the developer. What the developer needs to do is the following steps:

    1. When building, check the Small Packet Mode and fill in the Small Packet Mode Server Path.

    2. First game asset package into the game package, this item is optional.

      In the Small Packet Mode, due to too many assets on the launch scene, downloading and loading assets for a long time may result in a short black screen when entering the game for the first time. If First game asset package into the game package is checked, you can reduce the black screen time when you first enter the game. However, it should be noted that the res/import asset does not support split asset downloading at this time, and the entire import directory is also packaged into the first package.

      Developers can choose whether to check this item according to their needs. Then click on Build.

    3. After the build is complete, click the Open button after the Build Path to upload the res directory under the release path to the small packet mode server. For example, if the default release path is build, the Build Task Name is oppo-mini-game, you need to upload the /build/oppo-mini-game/res directory.

    At this point, the res directory will no longer be included in the built-up rpk, and the assets in the res directory will be downloaded from the filled Small Packet Mode Server Path through the network request.

  • Build Sub Package: this option is enabled by default. For details, please refer to Subpackage at the end of this document.

  • Keystore: when you check the Keystore, the default is to build the rpk package with a certificate that comes with Creator 3D, which is used only for debugging.

    Note: When the rpk package is to be used to submit an audit, do not check the Keystore to build it.

    If you don't check the Keystore, you need to configure the signature files certificate.pem path and private.pem path, where you build a rpk package that you can publish directly. The user can configure two signature files by using the search icon button to the right of the input box.

    There are two ways to generate a signature files:

    • Generated by the New button after the certificate.pem path in the Build panel.

    • Generated by the command line.

      The user needs to generate the signature file private.pem, certificate.pem through tools such as openssl.

      # Generate a signature file with the openssl command tool
openssl req -newkey rsa:2048 -nodes -keyout private.pem   -x509 -days 3650 -out certificate.pem

      Note: openssl can be used directly in the terminal in Linux or Mac environment, and in the Windows environment you need to install openssl and configure system environment variables. Restart Cocos Creator 3D after the configuration is complete.

2. Build

After the relevant parameters of the Build panel are set, click Build. When the build is complete, click the folder icon button below the corresponding build task to open the build release path, you can see that a directory with the same name as the Build Task Name is generated in the default release path build directory, which is the exported OPPO Mini Game project directory and rpk, rpk package are in the dist directory.

3. Run the built rpk to the phone

Copy the generated mini-game rpk file to the /sdcard/games/ directory on your phone's SD card. Then open the Mini Game Debugger that has been installed before on the Android device, click the OPPO Mini Game section, and then find the icon corresponding to the game name. If not found, click on the More -> Refresh button in the upper right corner to refresh.

4. Subpackage rpk

Subpackage loading, that is, splitting the game content into several packages according to certain rules, only downloading the necessary packages when starting up for the first time. This necessary package is called main package, and the developer can trigger in the main package to download other sub-packages, which can effectively reduce the time spent on the first boot. To use this function, you need to set Subpackage Configuration in Cocos Creator 3D, and the package will be automatically subpackaged when the setting is completed.

After the build is complete, the subpackage directory is in the dist directory.
In this case, you need to create a new subPkg directory in the sdcard directory of the Android device, and then copy the .rpk file in the dist directory to the subPkg directory.

Then switch to the Package Load section of OPPO Mini Game Debugger, click Refresh at the top right to see the game name of the subpackage, click Second Open to use the same as the normal packaged rpk.

Note: Subpackage rpk needs to be copied to the /sdcard/subPkg/ directory of Android devices, and non-subpackage rpk needs to be copied to the /sdcard/games/ directory of Android devices, both of which cannot be mixed.

Reference documentation

Note: Some platforms only have Chinese documentation available when visiting the platforms website. It may be necessary to use Google Translate in-order to review the documentation.

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