Messages

1

Graphics / Re: Problem with layers in tilemap system.

« on: February 09, 2015, 10:36:43 pm »

Thank for reply, but i have a file with true alpha channel ( http://postimg.org/image/w86zjzpe7/ )
I tried the function getColorMaskFrom and did not work

void TileMap::convertColorMask(std::string path)
{
        sf::Image buffer;
        buffer.loadFromFile(path);
        buffer.createMaskFromColor(sf::Color::Transparent,0);
        m_tileset.loadFromImage(buffer);
}
// m_tileset is private member sf::Texture
 

2

Graphics / Problem with layers in tilemap system.

« on: February 09, 2015, 10:15:11 pm »

Hello.
I apologize in advance for my weak English
I wrote a class that draws tilemap several layers , but I have a problem because the tile layer "solid " or " object" draw  with a black border ( alpha channel is black )
Shows how it looks more or less
I read data from XML.

Problem exist in layer other than bg, while dot is "player"
"bg" tiles is always appended to vertex array first than "solid" or "objects"

// class declaration TileMap : public sf::Drawable, public sf::Transformable
// i try set sf::BlendAlpha, no effect
while(tile)
                {

                        if(lName == "bg")                                                      
                        {
                                appendTile(x,y,tileNumber);
                        }
                        if(lName == "solid" && tileNumber != -1)       
                        {                                                                                      
                                appendTile(x,y,tileNumber);
                                solidTiles.push_back(SolidTile(x,y));
                        }


                }
 

and append tile function.

void TileMap::appendTile(const sf::Int32 x,const sf::Int32 y, const sf::Int32 GID)
{
        sf::Int32 tu = GID % (m_tileset.getSize().x / tile_width);
        sf::Int32 tv = GID / (m_tileset.getSize().x / tile_height);
        sf::Vertex* quad = &m_vertices[(x + y * width_in_tiles) * 4];
             
        quad[0].position = sf::Vector2f(x * tile_width, y * tile_height);
        quad[1].position = sf::Vector2f((x + 1) * tile_width, y * tile_height);
        quad[2].position = sf::Vector2f((x + 1) * tile_width, (y + 1) * tile_height);
        quad[3].position = sf::Vector2f(x * tile_width, (y + 1) * tile_height);
                       
        quad[0].texCoords = sf::Vector2f(tu * tile_width, tv * tile_height);
        quad[1].texCoords = sf::Vector2f((tu + 1) * tile_width, tv * tile_height);
        quad[2].texCoords = sf::Vector2f((tu + 1) * tile_width, (tv + 1) * tile_height);
        quad[3].texCoords = sf::Vector2f(tu * tile_width, (tv + 1) * tile_height);
}
 

problem looks like that

Thanks in advance.