minetest/src/texture_override.cpp

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/*
Minetest
Copyright (C) 2020 Hugues Ross <hugues.ross@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "texture_override.h"
#include "log.h"
#include "util/string.h"
#include <algorithm>
#include <fstream>
#define override_cast static_cast<override_t>
static const std::map<std::string, OverrideTarget> override_LUT = {
{ "top", OverrideTarget::TOP },
{ "bottom", OverrideTarget::BOTTOM },
{ "left", OverrideTarget::LEFT },
{ "right", OverrideTarget::RIGHT },
{ "front", OverrideTarget::FRONT },
{ "back", OverrideTarget::BACK },
{ "inventory", OverrideTarget::INVENTORY },
{ "wield", OverrideTarget::WIELD },
{ "special1", OverrideTarget::SPECIAL_1 },
{ "special2", OverrideTarget::SPECIAL_2 },
{ "special3", OverrideTarget::SPECIAL_3 },
{ "special4", OverrideTarget::SPECIAL_4 },
{ "special5", OverrideTarget::SPECIAL_5 },
{ "special6", OverrideTarget::SPECIAL_6 },
{ "sides", OverrideTarget::SIDES },
{ "all", OverrideTarget::ALL_FACES },
{ "*", OverrideTarget::ALL_FACES }
};
TextureOverrideSource::TextureOverrideSource(std::string filepath)
{
std::ifstream infile(filepath.c_str());
std::string line;
int line_index = 0;
while (std::getline(infile, line)) {
line_index++;
// Also trim '\r' on DOS-style files
line = trim(line);
// Ignore empty lines and comments
if (line.empty() || line[0] == '#')
continue;
// Format: mod_name:item_name target1[,...] texture_name.png
std::vector<std::string> splitted = str_split(line, ' ');
if (splitted.size() < 3) {
warningstream << filepath << ":" << line_index
<< " Syntax error in texture override \"" << line
<< "\": Expected 3 arguments, got " << splitted.size()
<< std::endl;
continue;
}
TextureOverride texture_override = {};
texture_override.id = splitted[0];
texture_override.texture = splitted[2];
// Parse the target mask
std::vector<std::string> targets = str_split(splitted[1], ',');
for (const std::string &target : targets) {
std::vector<std::string> kvpair = str_split(target, '=');
if (kvpair.size() == 2) {
// Key-value pairs
if (kvpair[0] == "align_world") {
// Global textures
texture_override.world_scale = stoi(kvpair[1], 0, U8_MAX);
continue;
}
}
if (kvpair.size() == 1) {
// Regular override flags
auto pair = override_LUT.find(target);
if (pair != override_LUT.end()) {
texture_override.target |= override_cast(pair->second);
continue;
}
}
// Report invalid target
warningstream << filepath << ":" << line_index
<< " Syntax error in texture override \"" << line
<< "\": Unknown target \"" << target << "\""
<< std::endl;
}
// If there are no valid targets, skip adding this override
if (texture_override.target == override_cast(OverrideTarget::INVALID)) {
continue;
}
m_overrides.push_back(texture_override);
}
}
//! Get all overrides that apply to item definitions
std::vector<TextureOverride> TextureOverrideSource::getItemTextureOverrides()
{
std::vector<TextureOverride> found_overrides;
for (const TextureOverride &texture_override : m_overrides) {
if (texture_override.hasTarget(OverrideTarget::ITEM_TARGETS))
found_overrides.push_back(texture_override);
}
return found_overrides;
}
//! Get all overrides that apply to node definitions
std::vector<TextureOverride> TextureOverrideSource::getNodeTileOverrides()
{
std::vector<TextureOverride> found_overrides;
for (const TextureOverride &texture_override : m_overrides) {
if (texture_override.hasTarget(OverrideTarget::NODE_TARGETS))
found_overrides.push_back(texture_override);
}
return found_overrides;
}