How do instantiate a ghost prefab when the player dies?

Hello.

You are not asking a specyfic question.

To your question, I answer:

1- Create the ghost prefab object

2- When player dies, Instantiate the ghost prefab in the position of the player

3- Move player transform to the respawn point.

Bye.

tormentoarmagedoom is right, this isn't really a technical question, but a stylistic one. There are lots of ways you could do this, it all just depends on the breadth of what you want to accomplish. Personally I wouldn't even go through the trouble of instantiating a new prefab for the player, I'd just have "living" and "ghost" settings on the main player object that activate/deactivate depending on the state.

Why does the scene reload on player death? Is it the same scene or a new scene? Either way, when the scene starts up, you could just have a different player object active depending on if the player has died or not, so you wouldn't even have to "drop a ghost prefab". But here's how prefab spawning works if you're unaware of it, or rather, one way you can go about it.

 // Make a reference to the prefab, then instantiate a clone of the prefab.
 
 GameObject tempChar = Resources.Load<GameObject>("*Name of your desired spawn prefab here!");
 // note that you have to create the Resources folder in your assets and put the prefab there.
 // It has to be a folder called Resources, but you can make nested folders called whatever you want.
 // in a nested folder the part in quotations would be like "folderName/*nameofprefab*"
 // You can also just set tempChar as a public variable in the script and assign it in the inspector,
 // if you would rather avoid Resource loading altogether.
 GameObject tempCharInstance = Instantiate(tempChar, transform.position, transform.rotation);
 // set the position/rotation to wherever you like, probably your spawnpoint or previous character position.

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