#pragma once
#include <memory>
#include <SDL_rect.h>
#include <vector>

#include "Constants.h"
#include "KVector2d.h"

namespace KapitanGame
{
	class KPawn;

	class KCamera
	{
	public:
		explicit KCamera(const SDL_FRect& map)
			: Viewport({
				  (map.w - Constants::SCREEN_WIDTH) / 2.f, (map.h - Constants::SCREEN_HEIGHT) / 2.f,
				  Constants::SCREEN_WIDTH * 1.f,
				  Constants::SCREEN_HEIGHT * 1.f
				}), PlayArea({
				  0, 0,
				  Constants::SCREEN_WIDTH - Constants::WINDOW_DEAD_ZONE,
				  Constants::SCREEN_HEIGHT - Constants::WINDOW_DEAD_ZONE
					}), FocusPoint(Viewport.x + Viewport.w / 2, Viewport.y + Viewport.h / 2),
			Scale(1.f)
		{
		}

		const SDL_FRect& GetViewport() const;
		float GetScale() const;
		const KVector2D& GetFocusPoint() const;
		void Update(const std::vector<std::shared_ptr<KPawn>>& pawns, const SDL_FRect& map);
		void SetDebug(const SDL_FRect& map);
		const SDL_FRect& GetPlayArea() const;
	private:
		SDL_FRect Viewport;
		SDL_FRect PlayArea;
		KVector2D FocusPoint;
		float Scale;
	};
}