After my possession of my pawn, it's un-possessed by itself

Development Programming & Scripting Blueprint
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1

Hello, I’m writing a snake game.

In my Game Mode blueprint, I spawn a Pawn (a snake head) and possess it with my Controller.

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In my Controller blueprint, I monitor On Possess and On UnPossess events.

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After running, I see 3 messages:

Possessed BP_SnakeHead
Unpossessed
Possessed DefaultPawn

So what is happening? Why did my Controller unpossess my Pawn and possess another thing?

2

Maybe your DefaultPawn (defined in GameMode) is being spawned and calls possess on itself. Set default pawn to None to fix

3

Thanks, now the DefaultPawn has gone. But there’s another problem: the spawned pawn BP_SnakeHead is killed instantly. In BP_SnakeHead I monitor event Destroyed and see this happening.

4

Hmm. Check Initial Life Span on snake actor.
Also in your SpawnActor node change Collision Handling to Always spawn, perhaps some object is in your way.