Menu.h
/////////////////////////////////

#pragma once
#include <SFML/Graphics.hpp>
#include "Framework/Input.h"
#include "Framework/AudioManager.h"
#include "Framework/GameState.h"
#include "Framework/Animation.h"
#include "Framework/GameObject.h"
#include <string>
#include <iostream>
class Menu :public GameObject
{
public:
	Menu(sf::RenderWindow* hwnd, Input* in, GameState* state);
	~Menu();

	void handleInput(float dt);
	void update(float dt);
	void render();

private:
	// Default functions for rendering to the screen.
	void beginDraw();
	void endDraw();

	// Default variables for level class.
	sf::RenderWindow* window;
	Input* input;
	GameState* gameState;
	AudioManager* audio;
	sf::Font font;
	sf::Text text;
	sf::Text text2;
	GameObject backgroundobj;

	Animation background;
	sf::Texture backgroundtexture;


};


Menu.cpp
////////////////////////////////////////////
#include "Menu.h"



Menu::Menu(sf::RenderWindow* hwnd, Input* in, GameState *state)
{

	window = hwnd;
	input = in;
	gameState = state;

	// render text
	if (!font.loadFromFile("font/arial.ttf"))
	{
		std::cout << "Error loading font/n";
	}
	backgroundtexture.loadFromFile("gfx/menu.png");

	backgroundobj.setTexture(&backgroundtexture);
	backgroundobj.setPosition(0, 0);

	background.addFrame(sf::IntRect(0, 0, 500, 333));
	background.addFrame(sf::IntRect(0, 500, 500, 333));
	background.addFrame(sf::IntRect(0, 1000, 500, 333));
	background.addFrame(sf::IntRect(0, 1500, 500, 333));
	background.addFrame(sf::IntRect(0, 2000, 500, 333));
	background.addFrame(sf::IntRect(0, 2500, 500, 333));
	background.addFrame(sf::IntRect(0, 3000, 500, 333));
	background.addFrame(sf::IntRect(0, 3500, 500, 333));
	background.addFrame(sf::IntRect(0, 4000, 500, 333));
	background.addFrame(sf::IntRect(0, 4500, 500, 333));
	background.addFrame(sf::IntRect(0, 5000, 500, 333));
	background.addFrame(sf::IntRect(0, 5500, 500, 333));
	background.addFrame(sf::IntRect(0, 6000, 500, 333));
	background.addFrame(sf::IntRect(0, 6500, 500, 333));
	background.setFrameSpeed(0.1f);

	background.getCurrentFrame();

	text.setFont(font);
	text.setString("Hello World");
	text.setCharacterSize(24);
	text.setFillColor(sf::Color::Red);
	text.setPosition(500, 0);

	text2.setFont(font);
	text2.setString("Press Enter to play");
	text2.setCharacterSize(24);
	text2.setFillColor(sf::Color::Blue);
	text2.setPosition(0, 600);
}


Menu::~Menu()
{

}


// handle user input
void Menu::handleInput(float dt)
{
	if (input->isKeyDown(sf::Keyboard::Enter))
	{
		gameState->setCurrentState(State::LEVEL);
	}
}

// Update game objects
void Menu::update(float dt)
{
	background.animate(dt);
	setTextureRect(background.getCurrentFrame());
}

// Render level
void Menu::render()
{
	beginDraw();
	window->draw(backgroundobj);
	window->draw(text);
	window->draw(text2);
	endDraw();
}

// Begins rendering to the back buffer. Background colour set to light blue.
void Menu::beginDraw()
{
	window->clear(sf::Color(100, 149, 237));
}

// Ends rendering to the back buffer, and swaps buffer to the screen.
void Menu::endDraw()
{
	window->display();
}



Animation.cpp
//////////////////////////////////////////////////////
#include "Animation.h"

// Constructor. Sets initial values.
Animation::Animation()
{
	currentFrame = 0;
	elapsedTime = 0.f;
	isPlaying = true;
	isLooping = true;
}

// Adds animation frame. Rect object represent a single sprite frame
void Animation::addFrame(sf::IntRect rect)
{
	frames.push_back(rect);
}

// Returns the size of the animation. The number of frames.
int Animation::getSize()
{
	return (int)frames.size();
}

// Get current frame from the animation. Flip the returning frame if required.
sf::IntRect Animation::getCurrentFrame()
{
	frame = frames[currentFrame];
	if (flipped)
	{

		frame = sf::IntRect(frame.left + frame.width, frame.top, -frame.width, frame.height);
	}
	return frame;
}

// Check if the animation should progress, if so move to next frame, or loop back to the start
void Animation::animate(float dt)
{
	if (isPlaying)
	{
		elapsedTime += dt;
		if (elapsedTime >= animationSpeed)
		{
			currentFrame++;
			if (currentFrame >= (int)frames.size())
			{
				if (isLooping)
				{
					currentFrame = 0;
				}
				else
				{
					currentFrame--;
				}
			}
			elapsedTime = 0;
		}
	}
}

// Reset animation.
void Animation::reset()
{
	currentFrame = 0;
	elapsedTime = 0;
}

// Set animation speed, in Frames per Second.
void Animation::setFrameSpeed(float speed)
{
	animationSpeed = speed;
}