// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Pawn.h"
#include "Kismet/KismetMathLibrary.h"
#include "GameFramework/CharacterMovementComponent.h"
#include "GameFramework/FloatingPawnMovement.h"
#include "BasePawn.generated.h"

class UCameraComponent;

//enum movement_t : uint8
//{
//	UP,
//	DOWN,
//	LEFT,
//	RIGHT
//};

UCLASS()
class PRESIDENTSBRIGADE_API ABasePawn : public APawn
{
	GENERATED_BODY()

public:
	// Sets default values for this pawn's properties
	ABasePawn(const FObjectInitializer &object_initializer);

	// Called every frame
	virtual void Tick(float DeltaTime) override;

	// Called to bind functionality to input
	virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;
protected:
	// Called when the game starts or when spawned
	virtual void BeginPlay() override;

	virtual UPawnMovementComponent* GetMovementComponent() const;

	UPROPERTY(EditAnywhere, Category="Player")
	UCameraComponent* main_camera;

	UPROPERTY(EditAnywhere, Category="Player")
	UStaticMeshComponent* player_mesh;

	UPROPERTY(EditAnywhere, Category="Player")
	UFloatingPawnMovement* movement_component;
	
	// Accel max time.
	UPROPERTY(EditDefaultsOnly, Category="Gameplay")
	float accel_max_time;

	// Maximum horizontal speed.
	UPROPERTY(EditDefaultsOnly, Category="Gameplay")
	float horizontal_speed_max;

	// Maximum vertical speed.
	UPROPERTY(EditDefaultsOnly, Category="Gameplay")
	float vertical_speed_max;

private:	
	struct AccelerationAnim
	{
		float start;
		float end;
		float max_time;

		float time_elapsed;

		void set(float _start, float _end, float _max_time)
		{
			start = _start;
			end = _end;
			max_time = _max_time;
			time_elapsed = 0;
		};

		float update(const float delta_time)
		{
			float percentage = time_elapsed / max_time;

			// Animation is complete.
			if (time_elapsed > max_time)
			{
				percentage = 1;
			}

			time_elapsed += delta_time;
			return UKismetMathLibrary::Lerp(start, end, percentage);
		};
	};

	USceneComponent* root_component;

//	DECLARE_DELEGATE_TwoParams(FMovementDelegate, const movement_t, const int);
//	void handle_move_input(const movement_t move_type, const int direction);
	void handle_move_right(float axis);
	void handle_move_forward(float axis);

	float horizontal_speed;
	float vertical_speed;

	AccelerationAnim horizontal_accel;
	AccelerationAnim vertical_accel;
};