jrtaylor-com / mmo_server_with_micronaut

Hobby project to create mmo server using Java Micronaut with JWT Auth, postgres and mongoDB support

MMO Server implementation (work in progress)

Currently working on:

• Synchronising motion of character in-game.

Documentation within blog:

Each of the posts contains a video overview.

Character creation examples:

• Part 1: overview using N-Hance Assets: https://ylazarev.com/2022/08/10/20-unreal-engine-mmo-style-character-creation-with-n-hance-assets/
• Part 2: Complex nested options: https://ylazarev.com/2022/08/17/21-unreal-engine-character-creation-part-2-complex-nested-options/
• Part 3: Apply nested options to meshes: https://ylazarev.com/2022/08/27/22-unreal-engine-character-creation-part-3-apply-options-to-mesh-n-hance/
• Part 4: Connecting implementation with the server: https://ylazarev.com/2022/09/29/23-unreal-engine-character-creation-part-4-connect-to-custom-server/
• Part 5: Select character screen connected with server: https://ylazarev.com/2022/10/08/24-unreal-engine-character-creation-part-5-select-character-with-server/

Logging into the game:

• Part 1: https://ylazarev.com/2022/10/19/24-unreal-engine-logging-into-a-custom-server/
• Part 2: https://ylazarev.com/2022/10/26/26-unreal-engine-synchronize-motion-with-a-custom-server/
• part 3: https://ylazarev.com/2022/11/14/27-unreal-engine-display-nearby-players-with-custom-server/
• part 4: https://ylazarev.com/2022/11/24/28-unreal-engine-synchronize-nearby-player-appearance/

Inventory Implementation

• Base implementation: https://ylazarev.com/2022/05/11/creating-mmo-rpg-style-inventory-system-with-java-and-mongodb/
• Base integration with UE: https://ylazarev.com/2022/05/27/14-mmo-rpg-inventory-in-unreal-engine-server/
• Customise inventory: https://ylazarev.com/2022/06/12/16-ue-customized-mmo-rpg-inventory/
• Equipping items example: https://ylazarev.com/2022/07/02/17-java-mmo-rpg-inventory-implementation-equipping-items/
• Equipping items continued: https://ylazarev.com/2022/07/24/19-unreal-engine-equip-inventory-items-with-custom-server/

Base components, JWT no longer in use, in favor of using Cognito or alternatives

• Configuring MongoDB & creation of characters for account: https://ylazarev.com/2021/05/08/7-java-micronaut-with-mongodb-character-controller/

• Setting up Micronaut, jooq, flyway: https://ylazarev.com/2021/04/18/4-java-micronaut-dockered-postgres/

• Setting up JWT Authentication: https://ylazarev.com/2021/04/26/5-java-micronaut-jwt-authentication/

• Encode password for user, integrate with JWT: https://ylazarev.com/2021/05/04/6-java-secure-encode-user-credential/

This project branches from the Micronaut template found here: https://github.com/yazoo321/micronaut_template

To see where components are configured, see mini tutorial on youtube: https://www.youtube.com/watch?v=PF_Bg6CgMts&t=16s

JWT Authentication described here on YouTube tutorial here: https://www.youtube.com/watch?v=acAFcDWuxhI&t=8s

Dependencies

In this project we rely on Docker, you can download it here: https://docs.docker.com/desktop/windows/install/

Micronaut 2.4.1 Documentation

• User Guide
• API Reference
• Configuration Reference
• Micronaut Guides

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Feature http-client documentation

• Micronaut HTTP Client documentation

Getting started

In order to build the project run: ./gradlew build

In order to remove the docker container and its database, run docker rm -f -v <container_name>

This project is a base template for getting started with micronaut + postgres + jooq + flyway + lombok.

It contains a very simple migration file (resources/db/postgres/V1__create_user_table.sql) to create a base users table and an entry with a user. Modify this based on your requirements.