#include <SFML/Graphics.hpp>
//#include <SFML/Main.hpp>
//#include <SFML/System.hpp>
//#include <SFML/Window.hpp>
//#include <iostream>
class TileMap : public sf::Drawable, public sf::Transformable {
public:
bool load(const std::string& tileset, sf::Vector2u tileSize, const int* tiles, unsigned int width, unsigned int height) {
//Load the tileset texture
if (!m_tileset.loadFromFile(tileset))
return false;
//resize the vertex array to fit the level size
m_vertices.setPrimitiveType(sf::Triangles);
m_vertices.resize(width * height * 6);
//populate the vertex array, with two triangles per tile
for (unsigned int i = 0; i < width; ++i)
for (unsigned int j = 0; j < height; ++j) {
//get the current tile number
int tileNumber = tiles[i + j * width];
//find its position in the tileset texture
int tu = tileNumber % (m_tileset.getSize().x / tileSize.x);
int tv = tileNumber / (m_tileset.getSize().x / tileSize.x);
//get a pointer to the triangles' vertices of the current tile
sf::Vertex* triangles = &m_vertices[(i + j * width) * 6];
//define the 6 corners of the two triangles
triangles[1].position = sf::Vector2f((i + 1) * tileSize.x, j * tileSize.y);
triangles[2].position = sf::Vector2f(i * tileSize.x, (j + 1) * tileSize.y);
triangles[3].position = sf::Vector2f(i * tileSize.x, (j + 1) * tileSize.y);
triangles[4].position = sf::Vector2f((i + 1) * tileSize.x, j * tileSize.y);
triangles[5].position = sf::Vector2f((i + 1) * tileSize.x, (j + 1) * tileSize.y);
//defince the 6 matchine texture coordinates
triangles[0].texCoords = sf::Vector2f(tu * tileSize.x, tv * tileSize.y);
triangles[1].texCoords = sf::Vector2f((tu + 1) * tileSize.x, tv * tileSize.y);
triangles[2].texCoords = sf::Vector2f(tu * tileSize.x, (tv + 1) * tileSize.y);
triangles[3].texCoords = sf::Vector2f(tu * tileSize.x, (tv + 1) * tileSize.y);
triangles[4].texCoords = sf::Vector2f((tu + 1) * tileSize.x, tv * tileSize.y);
triangles[5].texCoords = sf::Vector2f((tu + 1) * tileSize.x, (tv + 1) * tileSize.y);
}
return true;
}
private:
virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const {
//apply the transform
states.transform *= getTransform();
//apply the tileset texture
states.texture = &m_tileset;
//draw the vertex array
target.draw(m_vertices, states);
}
sf::VertexArray m_vertices;
sf::Texture m_tileset;
};
int main() {
//create the window
sf::RenderWindow window(sf::VideoMode(512, 256), "Tilemap");
//define the level with an array of tile indices
const int level[] =
{
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 2, 0, 0, 0, 0,
1, 1, 0, 0, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3, 3, 3,
0, 1, 0, 0, 2, 0, 3, 3, 3, 0, 1, 1, 1, 0, 0, 0,
0, 1, 1, 0, 3, 3, 3, 0, 0, 0, 1, 1, 1, 2, 0, 0,
0, 0, 1, 0, 3, 0, 2, 2, 0, 0, 1, 1, 1, 1, 2, 0,
2, 0, 1, 0, 3, 0, 2, 2, 2, 0, 1, 1, 1, 1, 1, 1,
0, 0, 1, 0, 3, 2, 2, 2, 0, 0, 0, 0, 1, 1, 1, 1,
};
//create the tilemap from the level definition
TileMap map;
if (!map.load("tileset.png", sf::Vector2u(32, 32), level, 16,
)
return -1;
//run the main loop
while (window.isOpen()) {
//handle events
sf::Event event;
while (window.pollEvent(event)) {
if (event.type == sf::Event::Closed)
window.close();
}
//draw the map
window.clear();
window.draw(map);
window.display();
}
return 0;
}
