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#include "animation.h"
#include <string>
namespace Graphics{
Animation::Animation(){}
Animation::Animation(const sf::Texture& texture, std::size_t count,
sf::Time duration, bool repeat)
: numFrames_ (count)
, currentFrame_(0)
, duration_(duration)
, elapsedTime_(sf::Time::Zero)
, repeat_ (repeat)
{
sprite_.setTexture(texture);
sf::Vector2u size = texture.getSize();
if (size.x % numFrames_ != 0){
throw ("Animation: size not divisible by " + std::to_string(count));
}
frameSize_.x = static_cast<std::size_t>(size.x / count);
frameSize_.y = size.y;
sprite_.setTextureRect( sf::IntRect(0,0,frameSize_.x,frameSize_.y) );
}
void Animation::update(sf::Time deltaTime){
sf::Time timePerFrame = duration_ / static_cast<float>(numFrames_);
elapsedTime_ += deltaTime;
while (elapsedTime_ > timePerFrame ){
if(currentFrame_ == numFrames_ - 1){
if (repeat_) {
currentFrame_ = 0;
} else {
return;
}
} else {
currentFrame_ ++;
}
elapsedTime_ -= timePerFrame;
sprite_.setTextureRect(
sf::IntRect(
currentFrame_ * frameSize_.x,
0,
frameSize_.x,
frameSize_.y)
);
}
}
void Animation::draw(sf::RenderTarget& target, sf::RenderStates states)
const{
target.draw(sprite_, states);
}
void Animation::reset(){
currentFrame_ = 0;
elapsedTime_ = sf::Time::Zero;
sprite_.setTextureRect( sf::IntRect(0,0,frameSize_.x,frameSize_.y) );
}
bool Animation::finished() const{
return (!repeat_ && currentFrame_ == numFrames_ - 1) ;
}
}
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