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Graphics / sf::setTextureRect Not Working As Expected?

« on: September 29, 2022, 10:18:27 am »

This is a problem that I've been troubleshooting for a full week & it's making me lose my mind. And the problem? Let me explain:

Whenever I set my sprite's texture rect, it just gives me a white square instead of the texture file cropped. And if you're asking if my file exists & if I set the correct directory for it, I'm 100% sure it is as it loads whenever I remove the "sf::setTextureRect" code. I've read others' problems here in the SFML Forums as well as in the subreddit and applied to my code, but none of them worked.

Here are the code files:

game.h (where I load everything):

#pragma once

#include <SFML/Graphics.hpp>
#include <SFML/System.hpp>
#include <iostream>
#include <cmath>

#include "player.hpp"

class Game {
  private:
    // Window Specifications
    sf::RenderWindow* window;
    sf::VideoMode videoMode;

    // Window Event Handler
    sf::Event event;

    // The Player Itself
    Player* player;

    // Private Functions
    void initWindow();
    void initPlayer();

  public:
    // Constructor & Destructor
    Game();
    virtual ~Game();

    // Accessor
    const bool isRunning() const;
   
    // Game Functions
    void pollEvents();
    void update();
    void render();
};

game.cpp (where I handle everything):

#include "game.hpp"

//////////////////////////////// GAME WINDOW SPECIFICATIONS ////////////////////////////////
// Private Game Window Function
void Game::initWindow() {
  this->videoMode.width = 800;
  this->videoMode.height = 600;

  this->window = new sf::RenderWindow(this->videoMode, "SFML Game Sample", sf::Style::Titlebar | sf::Style::Close);
  this->window->setFramerateLimit(120);
  this->window->setKeyRepeatEnabled(false);
  this->window->setVerticalSyncEnabled(false);
}
////////////////////////////////////////////////////////////////////////////////////////////

void Game::initPlayer() {
  this->player = new Player();
}

// Game Constructor
Game::Game() {
  this->initWindow();
  this->initPlayer();
}

// Game Destructor
Game::~Game() {
  delete this->window;
  delete this->player;
}

// Game Accessor
const bool Game::isRunning() const {
  return this->window->isOpen();
}

//////////////////// While-Loop Event to Keep the Game Window Running ////////////////////
void Game::pollEvents() {
  while (this->window->pollEvent(this->event)) {
    switch (this->event.type) {
      case sf::Event::Closed:
        this->window->close();
        break;
      case sf::Event::KeyPressed:
        if (this->event.key.code == sf::Keyboard::Escape)
          this->window->close();
        break;
    }
  }
}
//////////////////////////////////////////////////////////////////////////////////////////

// Game Functions
void Game::update() {
  // Call The Poll Event to Update Game
  this->pollEvents();
}

void Game::render() {
  // Clears Each Frame
  this->window->clear(sf::Color(125, 125, 125, 255));

  // Render Player
  this->player->render(*this->window);

  // Displays Frame in Game Window
  this->window->display();
}

player.h (of course the player itself):

#pragma once

#include <SFML/Graphics.hpp>
#include <SFML/System.hpp>
#include <iostream>
#include <cmath>

class Player {
  private:
    friend int main();

    // Private Player Variables
    sf::Sprite sprite;
    sf::Texture texture;
    sf::IntRect currentFrame;

    // Private Player Functions
    void initTexture();
    void initSprite();

  public:
    // Constructor & Destructor
    Player();
    virtual ~Player();

    // Player Functions
    void update();
    void render(sf::RenderTarget & rt);
};

player.cpp:

#include "player.hpp"

void Player::initTexture() {
  // Load The Texture File
  if(!this->sprite.setTexture(this->texture)) {
    this->texture.loadFromFile("Textures/spring.png");
  }
}

void Player::initSprite() {
  // Set a Texture to The Sprite
  std::cout << "ERROR: Could Not Load Texture File.\n";

  // Crops The Spritesheet The Way I Want it
  this->currentFrame = sf::IntRect(2, 2, 120, 120); // THIS IS THE
  this->sprite.setTextureRect(this->currentFrame);  // PROBLEM !!!

  // Set Sprite Position
  this->sprite.setOrigin(sf::Vector2f(sprite.getLocalBounds().width, sprite.getLocalBounds().height) / 2.f);
  this->sprite.setPosition(300.f, 300.f);

  // Resize The Sprite
  this->sprite.setScale(sf::Vector2f(1.5f, 1.5f));
}

// Constructor
Player::Player() {
    this->initTexture();
    this->initSprite();
}

// Destructor
Player::~Player() {
 
}

void Player::update() {
  // still empty for now.
}

void Player::render(sf::RenderTarget & rt) {
  rt.draw(this->sprite);
}

Although it WORKS whenever I put sf::IntRect inside this->sprite.loadTextureFile() in player.cpp, but that's not what I want because my goal here is to make a spritesheet animation..
 
I need an answer asap, as well as an explanation so I can troubleshoot all of this by myself in the future. Again, this has already wasted me a full week & I'm getting frustrated the more time flies .