// Descent.Player.Intent: the debug override of the intent latch (DESIGN_UE.md sections 5.7 and 9.2).
// It lives here, with the sim core that owns the latch, and not in the player track's commands file, so the
// player track can add Descent.Player.Place / MoveTo / Look / ... in DescentCommands_Player.cpp without a clash.

#include "Core/DescentIntent.h"
#include "Core/DescentSimSubsystem.h"
#include "Debug/DescentCommandUtil.h"
#include "TheDescent.h"

#include "HAL/IConsoleManager.h"

namespace
{
	void CmdPlayerIntent(const TArray<FString>& Args, UWorld* World)
	{
		static const TCHAR* Usage = TEXT("usage: Descent.Player.Intent fwd right up lookYawDps lookPitchDps seconds [primary] [secondary] [sprint]   (fwd/right/up -1..1, look in degrees per second, seconds of SIM time; flags 0 or 1)");
		UDescentSimSubsystem* Sim = UDescentSimSubsystem::Get(World);
		TArray<double> N;
		if (!Sim || !Descent::Cmd::ParseNumbers(Args, 0, 6, N) || N[5] < 0.0)
		{
			Descent::Cmd::Fail(World, TEXT("Descent.Player.Intent"), Usage);
			return;
		}
		auto Flag = [&Args](int32 Index, bool& bOut) -> bool
		{
			bOut = false;
			if (Args.Num() <= Index)
			{
				return true;
			}
			bool bValid = false;
			bOut = Descent::Cmd::ParseBool(Args[Index], bValid);
			return bValid;
		};

		FDescentIntent Intent;
		Intent.Move = FVector(N[0], N[1], N[2]);
		Intent.Look = FVector2D(N[3], N[4]);
		if (!Flag(6, Intent.bPrimary) || !Flag(7, Intent.bSecondary) || !Flag(8, Intent.bSprint))
		{
			Descent::Cmd::Fail(World, TEXT("Descent.Player.Intent"), Usage);
			return;
		}
		// The vertical axis is also the jump / crouch key pair, so a held "up" drives both the swim axis and a jump.
		Intent.bJump = N[2] > 0.5;
		Intent.bDown = N[2] < -0.5;

		Sim->SetDebugIntent(Intent, N[5]);
		UE_LOG(LogDescent, Display, TEXT("Player.Intent: holding move (%.2f, %.2f, %.2f) look (%.1f, %.1f) deg/s for %.2f s of sim time"),
			N[0], N[1], N[2], N[3], N[4], N[5]);
	}

	FAutoConsoleCommandWithWorldAndArgs GIntentCmdPlayerIntent(
		TEXT("Descent.Player.Intent"),
		TEXT("Descent.Player.Intent fwd right up lookYawDps lookPitchDps seconds [primary] [secondary] [sprint] - hold an intent for a sim duration; it wins over the live input"),
		FConsoleCommandWithWorldAndArgsDelegate::CreateStatic(&CmdPlayerIntent));
}