animation.cpp

#include "animation.h"

animation::animation(sf::Texture* texture, sf::Vector2u imageCount, float switchTime)
{
	this->imageCount = imageCount;
	this->switchTime = switchTime;
	totalTime = 0.f;
	currentImage.x = 0; 
	uvRect.width = texture->getSize().x / static_cast<float>(imageCount.x);
	uvRect.height = texture->getSize().y / static_cast<float>(imageCount.y);
}

animation::~animation()
{}

void animation::update(int row, float deltaTime, bool faceRight)
{
	currentImage.y = row;
	totalTime += deltaTime;

	if (totalTime >= switchTime) {
		totalTime -= switchTime;
		currentImage.x++;
		if (currentImage.x >= imageCount.x)
		{
			currentImage.x = 0;
		}
	}
	
	uvRect.top = currentImage.y * uvRect.height;

	if (faceRight)
	{
		uvRect.left = currentImage.x * uvRect.width;
		uvRect.width = abs(uvRect.width);
	}
	else
	{
		uvRect.left = (currentImage.x + 1) * abs(uvRect.width);
		uvRect.width = -abs(uvRect.width);
	}
}