diff options
| -rw-r--r-- | doc/lua_api.txt | 10 | ||||
| -rw-r--r-- | src/client/tile.cpp | 30 |
2 files changed, 40 insertions, 0 deletions
diff --git a/doc/lua_api.txt b/doc/lua_api.txt index ce40e082c..182f5c821 100644 --- a/doc/lua_api.txt +++ b/doc/lua_api.txt @@ -292,6 +292,16 @@ Example: default_sandstone.png^[resize:16x16 +#### `[opacity:<r>` + Makes the base image transparent according to the given ratio. + r must be between 0 and 255. + 0 means totally transparent. + 255 means totally opaque. + +Example: + + default_sandstone.png^[opacity:127 + #### `[brighten` Brightens the texture. diff --git a/src/client/tile.cpp b/src/client/tile.cpp index ec8c95f02..3b5d2a3ae 100644 --- a/src/client/tile.cpp +++ b/src/client/tile.cpp @@ -1735,6 +1735,36 @@ bool TextureSource::generateImagePart(std::string part_of_name, baseimg->drop(); baseimg = image; } + /* + [opacity:R + Makes the base image transparent according to the given ratio. + R must be between 0 and 255. + 0 means totally transparent. + 255 means totally opaque. + */ + else if (str_starts_with(part_of_name, "[opacity:")) { + if (baseimg == NULL) { + errorstream << "generateImagePart(): baseimg == NULL " + << "for part_of_name=\"" << part_of_name + << "\", cancelling." << std::endl; + return false; + } + + Strfnd sf(part_of_name); + sf.next(":"); + + u32 ratio = mystoi(sf.next(""), 0, 255); + + core::dimension2d<u32> dim = baseimg->getDimension(); + + for (u32 y = 0; y < dim.Height; y++) + for (u32 x = 0; x < dim.Width; x++) + { + video::SColor c = baseimg->getPixel(x,y); + c.setAlpha(floor((c.getAlpha() * ratio) / 255 + 0.5)); + baseimg->setPixel(x,y,c); + } + } else { errorstream << "generateImagePart(): Invalid " |