Unity Pickup to JSON Sync

A Unity 3D demo where a third-person character picks up a sphere and that pickup sends a POST request to a mock JSON API.

What it does

When the scene starts, player stats (name, health, personality, charm, behavior, management) are loaded from a mock REST endpoint and shown in a HUD. Walk the character into the sphere: it disappears, the Intellect stat on screen jumps to 3, and a POST request sends a new Health value to the server, whose reply is shown in the Health text.

It reuses the GET and POST scripts from unity-json-get-post, and the data comes from the db.json in unity-mock-player-data.

How it works

• ThirdPersonBehaviour.cs (in Assets/Invector-3rdPersonController_LITE/Scripts/CharacterController/) sits on the player. In OnTriggerEnter it checks for the Ball tag, finds the ServerUpdate GameObject, calls PostMethod.PostData(), destroys the ball, sets intallect to 3 and updates a TextMeshPro label. It also exposes ethics, honesty and kindness sliders (1 to 3) that are not used yet.
• Assets/Script/PostMethod.cs builds a WWWForm with Health=110, sends it with UnityWebRequest.Post, shows Loading..., and writes the returned Health into a UI Text. Here PostData() is public and only runs when called.
• Assets/Script/Demo.cs runs a GET in Start, parses the JSON into a Data struct with JsonUtility, and fills six UI Text fields. The image download from the GET-POST demo is commented out.
• Character movement and camera come from the Invector Third Person Controller LITE asset included in Assets/.

Tech

• Unity 2020.3.25f1
• UGUI 1.0.0, TextMeshPro 3.0.6, Timeline 1.4.8
• Invector Third Person Controller LITE (Asset Store package, committed in Assets/)
• UnityWebRequest, JsonUtility

Use it

1. Clone the repo and open it in Unity Hub with Unity 2020.3.25f1.
2. Open Assets/Invector-3rdPersonController_LITE/Invector_BasicLocomotion.unity (not Assets/Scenes/SampleScene.unity, which has none of the demo set up) and press Play.
3. Move with WASD and walk into the sphere to trigger the POST.
4. To build your own version: tag the pickup Ball with a trigger collider, put PostMethod on a GameObject named exactly ServerUpdate, add ThirdPersonBehaviour to the player and assign its Intellect_txt, and assign the UI Text fields on Demo and PostMethod.

Scripts

Script	Purpose
Assets/Script/Demo.cs	GET request that fills the stats HUD
Assets/Script/PostMethod.cs	POST request that sends a new Health value
Assets/Invector-3rdPersonController_LITE/Scripts/CharacterController/ThirdPersonBehaviour.cs	Detects the Ball pickup and triggers the POST

Notes

• Despite the repository name, the character is third person, not first person.
• Library/ and Temp/ were committed (about 8,000 generated files, roughly 115 MB of history). Unity regenerates them; they should be removed from the repo and added to a .gitignore. Some paths in Library/PackageCache are long enough to fail checkout on Windows unless git config core.longpaths true is set.
• The endpoint https://my-json-server.typicode.com/MemeGamer/MockData/UnityData still uses the old repo name MockData; the repo is now unity-mock-player-data. At the time of writing, My JSON Server returned errors for both names. It is also a fake REST API, so POSTs are not saved.
• The Invector LITE asset and its 17 MB trailer video are third-party Asset Store content redistributed in this repo.
• isNetworkError and isHttpError are deprecated in Unity 2020.2 and later and produce warnings.