58 lines
2.1 KiB
C++
58 lines
2.1 KiB
C++
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#include "tilemap.hpp"
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TileMap::TileMap(std::shared_ptr<TileSet> tileSet, std::vector<std::vector<int>> tiles)
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{
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// resize the vertex array to fit the level size
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vertices.setPrimitiveType(sf::Quads);
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unsigned int size = tiles.size();
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vertices.resize(size * size * 4);
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// populate the vertex array, with one quad per tile
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for (unsigned int y = 0; y < size; ++y)
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for (unsigned int x = 0; x < size; ++x)
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{
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// get the current tile number
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int tileNumber = tiles[size - 1 - y][x];
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// TODO
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// Follow: https://www.sfml-dev.org/tutorials/2.5/graphics-vertex-array.php#example-tile-map
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// find its position in the tileset texture
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int tu = tileNumber % (tileset.getSize().y / tileSize.y);
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int tv = tileNumber / (tileset.getSize().y / tileSize.y);
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// get a pointer to the current tile's quad
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sf::Vertex *quad = &vertices[(y + x * width) * 4];
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// define its 4 corners
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quad[0].position = sf::Vector2f(y * tileSize.y, x * tileSize.y);
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quad[1].position = sf::Vector2f((y + 1) * tileSize.y, x * tileSize.y);
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quad[2].position = sf::Vector2f((y + 1) * tileSize.y, (x + 1) * tileSize.y);
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quad[3].position = sf::Vector2f(y * tileSize.y, (x + 1) * tileSize.y);
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// define its 4 texture coordinates
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quad[0].texCoords = sf::Vector2f(tu * tileSize.y, tv * tileSize.y);
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quad[1].texCoords = sf::Vector2f((tu + 1) * tileSize.y, tv * tileSize.y);
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quad[2].texCoords = sf::Vector2f((tu + 1) * tileSize.y, (tv + 1) * tileSize.y);
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quad[3].texCoords = sf::Vector2f(tu * tileSize.y, (tv + 1) * tileSize.y);
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}
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}
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void TileMap::draw(sf::RenderWindow *window)
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{
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window->draw(*this);
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}
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void TileMap::draw(sf::RenderTarget &target, sf::RenderStates states) const
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{
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// apply the transform
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// TODO? NEEDED?
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// states.transform *= getTransform();
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// apply the tileset texture
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states.texture = &tileMapTexture;
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// draw the vertex array
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target.draw(vertices, states);
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}
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