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General / Hexagon grid

« on: May 12, 2019, 02:58:18 pm »

Hello,  I got a hexagonal grid, and it does display right and I can even put textures on each hexagon. My problem is following:

In an additional std::map I store the coordinates of the central point and the x-y coordinate of the hexagon in the grid in a std::map<sf::Vector2f, sf::Vector2i> now I try to get the sf::Vector2i as return of a map search for displaying the Hexgrid coordinates in console for the one mouse if hoovering over in the window.  I'm trying to do this with find_if algorithm on the map. The function is part of the Hexgrid class which holds the hexagonal grid:

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sf::Vector2i Hexgrid::getCoordinate(sf::Vector2f avec)
{
   auto found = find_if(coordinate.begin(), coordinate.end(), [&](const std::pair<sf::Vector2f,sf::Vector2i>& temp)->bool {return (temp.first.x = avec.x && temp.first.y == avec.y); });
   return found->second;
}

however compiler notifies me of an error on converting pairs.

I also tried with another lambda:

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[&](sf::Vector2f& temp)->bool {return (temp.x = avec.x && temp.y == avec.y)

Here the compiler can't convert pair to sf::vector2f.


So after a search I found that I might have to write something extra but can't realy bend my head around what it is and why this specific thing is lacking. Thanks for a response or a hint.