Player.cpp

#include "Player.h"

Player::Player() { }

Player::Player(std::string filename, int rows, int columns, sf::Vector2f position)
{
	this->create(filename, rows, columns, position);
}

void Player::create(std::string filename, int rows, int columns, sf::Vector2f position)
{
	// Load the texture
	if (!texture.loadFromFile(filename))
		std::cout << "Could not load " << filename << std::endl;

	// Sheet dimensions
	sheetWidth = texture.getSize().x;
	sheetHeight = texture.getSize().y;

	// Attach to player sprite
	sprite.setTexture(texture);

	// Set the position
	sprite.setPosition(position.x, position.y);

	// Get the sprite width and height
	spriteWidth = sheetWidth / columns;
	spriteHeight = sheetHeight / rows;

	// Set the source frame
	source.x = 0;
	source.y = Right;

	// Sprite frame
	frameCounter = 0;
	switchFrame = 100;
	frameSpeed = 1000;
}

/* ===========================================================
*  GAME LOOP
*  ======================================================== */
void Player::update(float timePerTick)
{
	// Get the previous position/direction
	prevPosition = crntPosition;
	previousRow = source.y;

	// Try to reset frame if possible
	resetFrame();

	// Check which key is pressed
	if (sf::Keyboard::isKeyPressed(sf::Keyboard::Up))
	{
		source.y = Up;
		moveFrame(timePerTick);
		crntPosition.y -= 200.0f * timePerTick;
	}
	else if (sf::Keyboard::isKeyPressed(sf::Keyboard::Down))
	{
		source.y = Down;
		moveFrame(timePerTick);
		crntPosition.y += 200.0f * timePerTick;
	}
	else if (sf::Keyboard::isKeyPressed(sf::Keyboard::Left))
	{
		source.y = Left;
		moveFrame(timePerTick);
		crntPosition.x -= 200.0f * timePerTick;
	}
	else if (sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
	{
		source.y = Right;
		moveFrame(timePerTick);
		crntPosition.x += 200.0f * timePerTick;
	}
}

void Player::draw(sf::RenderWindow &window, float alpha)
{
	// Interpolate movement
	sprite.setPosition(crntPosition * alpha + prevPosition * (1.0f - alpha));

	// Create rectangle in sheet around a sprite
	sprite.setTextureRect(sf::IntRect(source.x * spriteWidth, source.y * spriteHeight, spriteWidth, spriteHeight));

	// Draw the sprite
	window.draw(sprite);
}

void Player::moveFrame(float timePerTick)
{
	if (source.y != previousRow)
		source.x = 0;

	frameCounter += frameSpeed * timePerTick;
	if (frameCounter >= switchFrame)
	{
		source.x++;
		if (source.x * spriteWidth >= sheetWidth)
			source.x = 0;

		frameCounter = 0;
	}
}

// TODO: Change this later
void Player::resetFrame()
{
	bool upKey = sf::Keyboard::isKeyPressed(sf::Keyboard::Up);
	bool downKey = sf::Keyboard::isKeyPressed(sf::Keyboard::Down);
	bool leftKey = sf::Keyboard::isKeyPressed(sf::Keyboard::Left);
	bool rightKey = sf::Keyboard::isKeyPressed(sf::Keyboard::Right);

	// If no movement keys are pressed
	if (!upKey && !downKey && !leftKey && !rightKey)
		source.x = 0;
}

// Not Used
void Player::movePlayer(float deltaTime)
{
	// Check which key is pressed
	if (sf::Keyboard::isKeyPressed(sf::Keyboard::Up))
		crntPosition.y -= 200.0f * deltaTime;
	else if (sf::Keyboard::isKeyPressed(sf::Keyboard::Down))
		crntPosition.y += 200.0f * deltaTime;
	else if (sf::Keyboard::isKeyPressed(sf::Keyboard::Left))
		crntPosition.x -= 200.0f * deltaTime;
	else if (sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
		crntPosition.x += 200.0f * deltaTime;
}