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feat: add text tile modifier #12084

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feat: add text tile modifier #12084

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9 changes: 9 additions & 0 deletions games/devtest/mods/testnodes/textures.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -171,3 +171,12 @@ minetest.register_node("testnodes:generated_png_dst_emb", {

groups = { dig_immediate = 2 },
})
minetest.register_node("testnodes:glyph_font", {
description = S("Combine Test Node"),
tiles = {{
name = "testnodes_generated_mb.png^[text:helloworld",
align_style = "world",
scale = 8,
}},
groups = { dig_immediate = 2 },
})
54 changes: 53 additions & 1 deletion src/client/tile.cpp
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Expand Up @@ -34,6 +34,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "guiscalingfilter.h"
#include "renderingengine.h"
#include "util/base64.h"
#include "client/fontengine.h"
#include "irrlicht_changes/CGUITTFont.h"

/*
A cache from texture name to texture path
Expand Down Expand Up @@ -1827,7 +1829,57 @@ bool TextureSource::generateImagePart(std::string part_of_name,
}
pngimg->drop();
}
else
/*
[text:char
Render a character at given position
*/
else if (str_starts_with(part_of_name, "[text:")) {
Strfnd sf(part_of_name);
sf.next(":");
std::string textdef = sf.next("");

irr::gui::CGUITTFont *font =
static_cast<irr::gui::CGUITTFont *>(g_fontengine->getFont());
auto dimenson = font->getDimension(textdef.data());
video::IImage *textimg = font->createTextureFromChar(*textdef.data());
#if FALSE
// another implemention: render a row of text, but these text aligns incorrectly.
int currentpos = 0;
for each (auto character in textdef) {
video::IImage *fontimg = font->createTextureFromChar(character);
auto dim = fontimg->getDimension();
dim.Width += 1;
dim.Height += 1;
fontimg->copyToWithAlpha(baseimg, v2s32(currentpos, 0),
core::rect<s32>(dim),
video::SColor(255, 255, 255, 255), NULL);
currentpos += dim.Width;
fontimg->drop();
}
#endif

if (baseimg) {
blitBaseImage(textimg, baseimg);
} else {
warningstream << "Using font img as base img, please specify background "
"texture before [text"
<< std::endl;
baseimg = driver->createImage(video::ECF_A8R8G8B8, dimenson);
textimg->copyTo(baseimg);
}
#if FALSE
// method that do not blit image, instead copy directly
if (!baseimg) {
core::dimension2d<u32> dim = fontimg->getDimension();
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
}
core::rect<s32> rect(fontimg->getDimension());
fontimg->copyToWithAlpha(
baseimg, v2s32(0), rect, video::SColor(255, 255, 255, 255), NULL);

#endif // FALSEif FALSE
textimg->drop();
}else
{
errorstream << "generateImagePart(): Invalid "
" modification: \"" << part_of_name << "\"" << std::endl;
Expand Down