#include "pch.h"
#include "Game.h"

#include <ostream>
#include <algorithm>

#include "colors.h"
#include "GroundTileTypeManager.h"
#include "utils.h"
#include "GridSystem/WorldTile.h"
#include "Levels/World/WorldLevel.h"


Rectf Game::VIEWPORT {};

Game::Game(const Window& window)
	: BaseGame { window }, m_Camera(Camera()), m_WorldLevel(WorldLevel(&m_Camera, GetViewPort())),
	  m_MainMenuLevel(MainMenuLevel(&m_Camera)), m_pCurrentLevel(&m_WorldLevel) {
	Initialize();
	Game::VIEWPORT = GetViewPort(); //TODO: See if this can be removed
}

Game::~Game() {
	Cleanup();
}

void Game::Initialize() {
	m_Camera.SetPosition(Vector2f { -GetViewPort().width / 2, -GetViewPort().height / 2 });
}

void Game::Cleanup() {
	
	ScreenManager::DestroyInstance();
	GroundTileTypeManager::DestroyInstance();
	TextureManager::DestroyInstance();
}

void Game::Update(float elapsedSec) {
	const Uint8* pStates = SDL_GetKeyboardState(nullptr);

	if (m_IsRightMouseDown) {
		const Vector2f newCameraPos = Vector2f { m_MousePosition.x + m_MouseOffset.x, m_MousePosition.y + m_MouseOffset.y };
		m_Camera.SetPosition(Vector2f { -newCameraPos.x, -newCameraPos.y });
	}
	else {
		m_MouseOffset = m_Camera.GetPosition();
	}

	m_pCurrentLevel->Update(elapsedSec);
}


void Game::Draw() const {
	utils::ClearBackground(Color4f(0.0f, 0.0f, 0.3f, 1.0f));
	m_pCurrentLevel->Draw();
}

void Game::ProcessKeyDownEvent(const SDL_KeyboardEvent& e) {
	//std::cout << "KEYDOWN event: " << e.keysym.sym << std::endl;
	if(e.keysym.sym == SDLK_BACKQUOTE) {
		m_imGui = !m_imGui;
	}
}

void Game::ProcessKeyUpEvent(const SDL_KeyboardEvent& e) {
}

void Game::ProcessMouseMotionEvent(const SDL_MouseMotionEvent& e) {
	m_MousePosition = Vector2f { float(e.x), float(e.y) };
	m_pCurrentLevel->MouseMove(Vector2f { float(e.x), float(e.y) });
}

void Game::ProcessMouseDownEvent(const SDL_MouseButtonEvent& e) {
	m_IsRightMouseDown = e.button == SDL_BUTTON_RIGHT;
	m_MouseOffset = Vector2f { -m_Camera.GetPosition().x - m_MousePosition.x, -m_Camera.GetPosition().y - m_MousePosition.y };
}

void Game::ProcessMouseUpEvent(const SDL_MouseButtonEvent& e) {
	m_IsRightMouseDown = e.button == SDL_BUTTON_RIGHT ? false : m_IsRightMouseDown;
}
void Game::ProcessMouseWheelEvent(const SDL_MouseWheelEvent& e) {
	float newScale = m_Camera.GetScale() - e.preciseY * 0.1f;
	if(newScale < 0.0f) {
		newScale = 0.0f;
	}
	m_Camera.SetScale(newScale);
}
void Game::ProcessImGui() {
	if(m_imGui) {
		m_pCurrentLevel->ProcessImGui();
	}
}