Ongoing C++ Gameplay Example Series: Making a Survival Game

[Tom_Looman]

@turtledma;551609

I am newbie to game development, and to unreal too… I am reviewing the project and I have a first question, maybe someone can help, when a new bot is spawned the code seems very simple …

	FActorSpawnParameters SpawnInfo;
	SpawnInfo.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AdjustIfPossibleButAlwaysSpawn;

	ASZombieAIController* AIC = GetWorld()->SpawnActor<ASZombieAIController>(SpawnInfo);
	RestartPlayer(AIC);

I don’t understand how does the engine know it has to build and spawn an instance of Zombie Character blueprint from this… can anyone help me understand the mechanics behind this?

thanks in advance and kind regards

David

Hi David,

I totally understand the confusion. It’s a bit of an obscure system. If you search for GetDefaultPawnClassForController_Implementation inside SGameMode.cpp you’ll find how it figures out which BotClass to use for the AI controller.

That function is called internally by the game framework when you call RestartPlayer(Controller)

Hope that helps.