Hi,
I was creating the code to move my sprite and implemented deltaTime into it, yet the sprite still jitters often when moving around. Does anyone know what is wrong? Comment if you need more detail.
main.cpp#include <SFML/Graphics.hpp>
#include "player.h"
int main()
{
sf::RenderWindow window(sf::VideoMode(1280, 720), "Incremental");
sf::Clock clock;
player player;
//Game Loop
while (window.isOpen())
{
sf::Event event;
while (window.pollEvent(event))
{
if (event.type == sf::Event::Closed)
window.close();
}
window.clear();
player.update(clock.restart().asSeconds());
window.draw(player.sprite);
window.display();
clock.restart();
}
return 0;
}
player.h#ifndef PLAYER_H
#define PLAYER_H
#include <SFML/Graphics.hpp>
#include <SFML/System/Clock.hpp>
#include <SFML/System/Time.hpp>
#include <SFML/Window/Keyboard.hpp>
class player
{
private:
// Clock and timer used to iterate between positions on the sprite sheet.
sf::Clock fpsClock;
sf::Time fpsTimer;
sf::Texture spriteSheet;
//Animation States
enum AnimationState
{
idle,
run,
interact
};
AnimationState animationState = idle;
//Used to check if sprite scale is already inversed when going left.
bool spriteInvertable = true;
//Movement
sf::Vector2f position;
float speed = 10000;
//Scale Properties
float spriteScaleX = 10, spriteScaleY = 10;
/*Animation positions in the sprite sheet...
Arrays are static and initialized elsewhere
cause VS is a POS and I had to use a workaround.
*/
const sf::IntRect IDLE = sf::IntRect(0, 0, 8, 10);
static const sf::IntRect RUN[2];
static const sf::IntRect INTERACT[4];
public:
sf::Sprite sprite;
//Animation Functions
void setAnimationState(const AnimationState&);
void animate();
void update(const double&);
player();
};
#endif
player.cpp
#include <SFML/Graphics/Texture.hpp>
#include <SFML/Graphics/Sprite.hpp>
#include <SFML/Graphics/Rect.hpp>
#include <SFML/System/Clock.hpp>
#include <SFML/System/Time.hpp>
#include <SFML/Window/Keyboard.hpp>
#include <iostream>
#include "player.h"
const sf::IntRect player::RUN[2] =
{
sf::IntRect(33, 0, 8, 10),
sf::IntRect(44, 0, 8, 10)
};
const sf::IntRect player::INTERACT[4] =
{
sf::IntRect(1, 0, 8, 10),
sf::IntRect(9, 0, 8, 10),
sf::IntRect(17, 0, 8, 10),
sf::IntRect(9, 0, 8, 10)
};
void player::setAnimationState(const AnimationState& state)
{
animationState = state;
}
void player::update(const double& deltaTime)
{
//Debugz
std::cout << deltaTime << std::endl;
//Movement Update
if
(
sf::Keyboard::isKeyPressed(sf::Keyboard::D) &&
!sf::Keyboard::isKeyPressed(sf::Keyboard::A) &&
animationState != interact
)
{
//Moves the sprite
sprite.move(speed * deltaTime, 0);
setAnimationState(run);
fpsTimer = fpsClock.getElapsedTime();
//Animates by going through the texture (probably a better way to do this...)
if (fpsTimer.asMilliseconds() <= 30 * 3)
{
sprite.setTextureRect(RUN[0]);
}
else if (fpsTimer.asMilliseconds() <= 60 * 3 && fpsTimer.asMilliseconds() > 30 * 3)
{
sprite.setTextureRect(RUN[1]);
}
else if (fpsTimer.asMilliseconds() >= 60 * 3)
{
fpsClock.restart();
}
//Re-enables spriteInvertable and uninverts the image if it was inverted.
if (!spriteInvertable)
{
sprite.setScale(spriteScaleX, spriteScaleY);
spriteInvertable = true;
}
}
else if
(
sf::Keyboard::isKeyPressed(sf::Keyboard::A) &&
!sf::Keyboard::isKeyPressed(sf::Keyboard::D) &&
animationState != interact
)
{
//Moves the sprite
sprite.move(-1 * speed * deltaTime, 0);
setAnimationState(run);
fpsTimer = fpsClock.getElapsedTime();
//Animates by going through the texture (probably a better way to do this...)
if (fpsTimer.asMilliseconds() <= 30 * 3)
{
sprite.setTextureRect(RUN[0]);
}
else if (fpsTimer.asMilliseconds() <= 60 * 3 && fpsTimer.asMilliseconds() > 30 * 3)
{
sprite.setTextureRect(RUN[1]);
}
else if (fpsTimer.asMilliseconds() >= 60 * 3)
{
fpsClock.restart();
}
//Inverts Sprite
if (spriteInvertable)
{
sprite.setScale(-spriteScaleX, spriteScaleY);
spriteInvertable = false;
}
}
else
{
sprite.setTextureRect(IDLE);
}
}
player::player()
{
//Loads up the texture and sets the sprite to it.
spriteSheet.loadFromFile("../art/final/player.png");
sprite.setTexture(spriteSheet);
sprite.setOrigin(5, 8);
//Default state
sprite.move(0, 100);
sprite.setTextureRect(IDLE);
sprite.setScale(spriteScaleX, spriteScaleY);
}
THANKS! 
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