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1

Graphics / VertexArray with different textures per vertex

« on: November 27, 2019, 11:21:19 am »

I'm trying to make a terraria clone, and draw the tiles with a VertexArray. The problem is that I don't see a way to set a custom texture for every vertex. Is the only solution I can do to create a container for every tile type and draw a VertexArray for every container?

sf::VertexArray va(sf::Quads, 68 * 18);
    int y = 0;
    int x = 0;
    sf::Texture sprite_sheet;
    sprite_sheet = sfml_resources::get().get_spritesheet();
    unsigned i = 0;
    for(tile& t : m_game.get_tiles()){
      y = (17 * (t.get_state() / 16));
      x = (18 * t.get_state()) % (16 * 18);
      sf::Vertex* quad = &va[i];
      const int tx = static_cast<int>(t.get_x());
      const int ty = static_cast<int>(t.get_y());
      quad[0].position = sf::Vector2f(tx, ty);
      quad[1].position = sf::Vector2f(tx + 32, ty);
      quad[2].position = sf::Vector2f(tx + 32, ty + 32);
      quad[3].position = sf::Vector2f(tx, ty + 32);
      quad[0].texCoords = sf::Vector2f(x, y);
      quad[1].texCoords = sf::Vector2f(x + 16, y);
      quad[2].texCoords = sf::Vector2f(x + 16, y + 16);
      quad[3].texCoords = sf::Vector2f(x, y + 16);
      i += 4;
    }
    m_window.draw(va, &sprite_sheet);

2

General / Graphic problem

« on: September 26, 2019, 07:32:34 pm »

I recently switched to using a vertex array for displaying the tiles, but sometimes I get lines between them, as you can see in the first attachment. And when I move it goes back to normal, as you can see in the second attachment. Does anyone know why this happens?

Code:

sf::VertexArray va(sf::Quads, m_game.get_loaded_chunks().size() * 2048);
int y = 0;
int x = 0;
sf::Texture sprite_sheet;
sprite_sheet = sfml_resources::get().get_spritesheet();
int i = 0;
for(chunk c : m_game.get_loaded_chunks()){
  for(tile& t : c.get_tiles()){
    y = (t.get_type() / 57) * 16;
    x = (17 * t.get_type()) % (57 * 17);
    sf::Vertex* quad = &va[i];
    quad[0].position = sf::Vector2f(t.get_x() - m_game.get_camera().x, t.get_y() - m_game.get_camera().y);
    quad[1].position = sf::Vector2f(t.get_x() + 32 - m_game.get_camera().x, t.get_y() - m_game.get_camera().y);
    quad[2].position = sf::Vector2f(t.get_x() + 32 - m_game.get_camera().x, t.get_y() + 32 - m_game.get_camera().y);
    quad[3].position = sf::Vector2f(t.get_x() - m_game.get_camera().x, t.get_y() + 32 - m_game.get_camera().y);
    quad[0].texCoords = sf::Vector2f(x, y);
    quad[1].texCoords = sf::Vector2f(x + 16, y);
    quad[2].texCoords = sf::Vector2f(x + 16, y + 16);
    quad[3].texCoords = sf::Vector2f(x, y + 16);
    if(t.get_attribute() != 0){
      sf::Vertex* att = &va[i + 4];
      att[0].position = sf::Vector2f(t.get_x() - m_game.get_camera().x, t.get_y() - m_game.get_camera().y);
      att[1].position = sf::Vector2f(t.get_x() + 32 - m_game.get_camera().x, t.get_y() - m_game.get_camera().y);
      att[2].position = sf::Vector2f(t.get_x() + 32 - m_game.get_camera().x, t.get_y() + 32 - m_game.get_camera().y);
      att[3].position = sf::Vector2f(t.get_x() - m_game.get_camera().x, t.get_y() + 32 - m_game.get_camera().y);
      if(t.get_attribute() == 1){
        att[0].texCoords = sf::Vector2f(221, 153);
        att[1].texCoords = sf::Vector2f(221 + 16, 153);
        att[2].texCoords = sf::Vector2f(221 + 16, 153 + 16);
        att[3].texCoords = sf::Vector2f(221, 153 + 16);
      }
      else if(t.get_attribute() == 2){
        att[0].texCoords = sf::Vector2f(459, 187);
        att[1].texCoords = sf::Vector2f(459 + 16, 187);
        att[2].texCoords = sf::Vector2f(459 + 16, 187 + 16);
        att[3].texCoords = sf::Vector2f(459, 187 + 16);
      }
      else if(t.get_attribute() == 3){
        att[0].texCoords = sf::Vector2f(443, 170);
        att[1].texCoords = sf::Vector2f(443 + 16, 170);
        att[2].texCoords = sf::Vector2f(443 + 16, 170 + 16);
        att[3].texCoords = sf::Vector2f(443, 170 + 16);
      }
    }
    i += 8;
  }
}
m_window.draw(va, &sprite_sheet);

3

General / Access objects in a particular order

« on: September 23, 2019, 08:03:54 pm »

To load the chunks which have to be loaded related to where the camera is in my game, I have written this function, but I can't get it to load the correct chunks. This is my code:

std::vector<chunk> game::load_chunks(){
  std::vector<chunk> loaded_chunks;
  int x = (m_camera.x + 960) / 512;
  int y = (m_camera.y + 540) / 512;
  int width = static_cast<int>(m_width / 512 + 0.99);
  int height = static_cast<int>(m_height / 512 + 0.99);
  int amount = width * height;
  int i;
  std::cout << m_camera.x << " " << m_camera.y << std::endl;
  std::cout << "x " << x << " y " << y << std::endl;
  std::cout << width << " " << height << std::endl;
  std::cout << -(amount / 2) << " " << (amount / 2) << std::endl;
  for(i = -(amount / 2); i < (amount / 2); i++){
    std::cout << x + (i % width) << " " << y + (i / height) << std::endl;
    auto find = m_chunks.find(std::make_pair(x + (i % width), y + (i / height)));
    if(find != m_chunks.end()) loaded_chunks.push_back(find->second);
  }
  m_last_load.x = m_camera.x;
  m_last_load.y = m_camera.y;
  return loaded_chunks;
}

Can anybody help?

4

Graphics / sf::VertexArray issue

« on: September 17, 2019, 03:32:59 pm »

I have this to draw a tile map:

sf::VertexArray va(sf::Quads, 10240);
int y = 0;
int x = 0;
sf::Texture sprite_sheet = sfml_resources::get().get_spritesheet();
int i = 0;
for(chunk c : m_game.get_loaded_chunks()){
   for(tile t : c.get_tiles()){
     y = (16 * (t.get_type() / 57)) / 16;
     x = (17 * t.get_type()) % (57 * 17);
     sf::Vertex* quad = &va[i];
     quad[0].position = sf::Vector2f(t.get_x() - m_game.get_camera().x, t.get_y() - m_game.get_camera().y);
     quad[1].position = sf::Vector2f(t.get_x() + 16 - m_game.get_camera().x, t.get_y() - m_game.get_camera().y);
     quad[2].position = sf::Vector2f(t.get_x() + 16 - m_game.get_camera().x, t.get_y() + 16 - m_game.get_camera().y);
     quad[3].position = sf::Vector2f(t.get_x() - m_game.get_camera().x, t.get_y() + 16 - m_game.get_camera().y);
     quad[0].texCoords = sf::Vector2f(x, y);
     quad[1].texCoords = sf::Vector2f(x + 16, y);
     quad[2].texCoords = sf::Vector2f(x + 16, y + 16);
     quad[3].texCoords = sf::Vector2f(x, y + 16);
     i++;
   }
}
m_window.draw(va, &sprite_sheet);

But when I run it the position is weird, see screenshot. Why is this happening?

5

Window / Single key key repetition

« on: September 16, 2019, 08:11:41 pm »

I have this function to process inputs:

void sfml_game::process_input(){
  if(sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) m_game.get_camera().move(sf::Vector2f(-1, 0));
  if(sf::Keyboard::isKeyPressed(sf::Keyboard::Right)) m_game.get_camera().move(sf::Vector2f(1, 0));
  if(sf::Keyboard::isKeyPressed(sf::Keyboard::Up)) m_game.get_camera().move(sf::Vector2f(0, -1));
  if(sf::Keyboard::isKeyPressed(sf::Keyboard::Down)) m_game.get_camera().move(sf::Vector2f(0, 1));
  if(sf::Keyboard::isKeyPressed(sf::Keyboard::F3)) m_debug_items = !m_debug_items;
}

Now I want to disable key repetition for F3 only, because I use it to toggle something. In it current state it just loops trough until I release the button. Is it possible to disable key repetition for one button only?