RunTogeter/Map.cpp at master · ht177970/RunTogeter · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
#include "Map.hpp"

namespace rpf {
	bool Map::load(const std::string& tileset, sf::Vector2u tileSize, std::vector<int> tiles, unsigned int width, unsigned int height)
	{
		m_width = width;
		m_height = height;
		if (!m_tileset.loadFromFile(tileset))
			return false;

		m_vertices.clear();
		m_vertices.setPrimitiveType(sf::Quads);
		m_vertices.resize(width * height * 4);

		for (unsigned int i = 0; i < width; ++i)
			for (unsigned int j = 0; j < height; ++j)
			{

				int tileNumber = tiles[i + j * width];

				if (tileNumber < 0) continue;

				int tu = tileNumber % (m_tileset.getSize().x / tileSize.x);
				int tv = tileNumber / (m_tileset.getSize().x / tileSize.x);

				sf::Vertex* quad = &m_vertices[(i + j * width) * 4];

				quad[0].position = sf::Vector2f(i * tileSize.x, j * tileSize.y);
				quad[1].position = sf::Vector2f((i + 1) * tileSize.x, j * tileSize.y);
				quad[2].position = sf::Vector2f((i + 1) * tileSize.x, (j + 1) * tileSize.y);
				quad[3].position = sf::Vector2f(i * tileSize.x, (j + 1) * tileSize.y);

				quad[0].texCoords = sf::Vector2f(tu * tileSize.x, tv * tileSize.y);
				quad[1].texCoords = sf::Vector2f((tu + 1) * tileSize.x, tv * tileSize.y);
				quad[2].texCoords = sf::Vector2f((tu + 1) * tileSize.x, (tv + 1) * tileSize.y);
				quad[3].texCoords = sf::Vector2f(tu * tileSize.x, (tv + 1) * tileSize.y);
			}

		return true;
	}


	void Map::draw(sf::RenderTarget& target, sf::RenderStates states) const
	{
		states.transform *= getTransform();
		states.texture = &m_tileset;
		target.draw(m_vertices, states);
	}
}