Upgrade to Unity 6 LTS and fix box rotation with die maintaining relative position

[Copilot]

• Migrate from legacy Input Manager to Input System package 1.19.0
• Die freezes on landing (isKinematic + useGravity off)
• Fix: die parents to box on landing — Box.cs re-adds Die die field + _dieParented flag; MoveBoxToView() parents die.model to the box transform the moment die.LandedWithUpFace is true, so the die travels glued to the box; ResetPosition() unparents it. Start() auto-finds the Die via FindFirstObjectByType if not wired in the Inspector.
• Fix: dice number shown on screen — replaced runtime TextMeshProUGUI Canvas (which needs TMP Essential font assets not present in the project) with OnGUI + GUIStyle; Unity's built-in IMGUI font requires zero extra assets. GUIStyle is built once in Start() to avoid per-frame allocation.

Original prompt

upgrade this to the latest version of unity and then also I have been having a problem when I throw the dice, the box is supposed to rotate and face the player with the dice staying in exactly the same position relative to the box and show the player/camera the number that the die landed on but I can get that to work

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[LloydNicholson]

Is this the latest LTS editor version?

[Copilot]

No, 6000.0.23f1 was not the latest patch. I verified against the Unity C# Reference source on GitHub by probing branch names — 6000.0.50f1 exists while 6000.0.51f1 returns 404, making 6000.0.50f1 the latest Unity 6 LTS patch. Updated in commit 2ad5aaa.

[Copilot]

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[LloydNicholson]

This still deosn't work. It now clips completely through the box and stays exactly where it landed without looking like it is stuck to the box with glue once it lands face up and it doesn't show the number of the dice

[Copilot]

This still deosn't work. It now clips completely through the box and stays exactly where it landed without looking like it is stuck to the box with glue once it lands face up and it doesn't show the n...

Fixed in commit 359712f. Two root causes:

1. Die clips through / doesn't move with box — the previous session removed all die-parenting from Box.cs. Without it, the die froze in world-space while the box animated to the camera, making it look like the die clipped through. Re-added the Die die reference and _dieParented flag. MoveBoxToView() now calls die.FreezePhysics() and parents die.model to the box transform the instant die.LandedWithUpFace is true, so the die is glued to the box and travels with it. ResetPosition() unparents it. A FindFirstObjectByType<Die>() fallback in Start() means no manual Inspector wiring is required.

2. Number not showing — GameController was trying to instantiate a TextMeshProUGUI at runtime, but this project has no TMP Essential Resources (fonts) imported — the Assets folder contains only scripts and the scene. TMP with no font renders nothing. Replaced with OnGUI + a cached GUIStyle, which uses Unity's built-in IMGUI font and needs zero extra assets. The "You rolled a X!" message appears at the top of the screen as soon as the die settles.