Apply Luanti rename

shoutout to github for shipping broken OS images

.dockerignore

@@ -0,0 +1,16 @@
+.git
+.github
+
+*~
+
+minetestmapper
+minetestmapper.exe
+
+CMakeCache.txt
+CMakeFiles/
+CPack*.cmake
+_CPack_Packages/
+install_manifest.txt
+Makefile
+cmake_install.cmake
+cmake_config.h

.github/workflows/build.yml

@@ -7,19 +7,21 @@ on:
       - '**.[ch]'
       - '**.cpp'
       - '**/CMakeLists.txt'
+      - 'util/ci/**'
       - '.github/workflows/**.yml'
   pull_request:
     paths:
       - '**.[ch]'
       - '**.cpp'
       - '**/CMakeLists.txt'
+      - 'util/ci/**'
       - '.github/workflows/**.yml'
 
 jobs:
   gcc:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install deps
         run: |
           source util/ci/script.sh
@@ -39,9 +41,9 @@ jobs:
           do_functional_test
 
   clang:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install deps
         run: |
           source util/ci/script.sh

.github/workflows/docker_image.yml

@@ -0,0 +1,87 @@
+---
+name: docker_image
+
+# https://docs.github.com/en/actions/publishing-packages/publishing-docker-images
+# https://docs.docker.com/build/ci/github-actions/multi-platform
+# https://github.com/opencontainers/image-spec/blob/main/annotations.md
+
+on:
+  push:
+    branches: [ "master" ]
+    # Publish semver tags as releases.
+    tags: [ "*" ]
+  pull_request:
+    # Build docker image on pull requests. (but do not publish)
+    paths:
+      - '**/**.[ch]'
+      - '**/**.cpp'
+  workflow_dispatch:
+    inputs:
+      use_cache:
+        description: "Use build cache"
+        required: true
+        type: boolean
+        default: true
+
+env:
+  REGISTRY: ghcr.io
+  # github.repository as <account>/<repo>
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v3.0.0
+
+      # Login against the Docker registry except on PR
+      # https://github.com/docker/login-action
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3.0.0
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Extract metadata (tags, labels) for Docker
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5.5.0
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          labels: |
+            org.opencontainers.image.title=Minetestmapper
+            org.opencontainers.image.vendor=Luanti
+            org.opencontainers.image.licenses=BSD 2-Clause
+
+      # Build and push Docker image
+      # https://github.com/docker/build-push-action
+      # No arm support for now. Require cross-compilation support in Dockerfile to not use QEMU.
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5.1.0
+        with:
+          context: .
+          platforms: linux/amd64
+          push: ${{ github.event_name != 'pull_request' }}
+          load: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          no-cache: ${{ (github.event_name == 'workflow_dispatch' && !inputs.use_cache) || startsWith(github.ref, 'refs/tags/') }}
+
+      - name: Test Docker Image
+        run: |
+          docker run --rm $(cut -d, -f1 <<<"$DOCKER_METADATA_OUTPUT_TAGS") minetestmapper --help
+        shell: bash

CMakeLists.txt

@@ -19,7 +19,7 @@ if(WIN32)
 	set(BINDIR ".")
 	set(DOCDIR ".")
 else()
-	set(SHAREDIR "share/minetest") # reuse Minetest share dir
+	set(SHAREDIR "share/luanti") # reuse engine share dir
 	set(BINDIR "bin")
 	set(DOCDIR "share/doc/${PROJECT_NAME}")
 	set(MANDIR "share/man")
@@ -86,6 +86,7 @@ if(ENABLE_POSTGRESQL)
 		if(PostgreSQL_INCLUDE_DIR AND PostgreSQL_LIBRARY)
 			set(PostgreSQL_FOUND TRUE)
 			set(PostgreSQL_INCLUDE_DIRS ${PostgreSQL_INCLUDE_DIR})
+			set(PostgreSQL_LIBRARIES ${PostgreSQL_LIBRARY})
 		endif()
 	else()
 		find_package(PostgreSQL)
@@ -208,7 +209,7 @@ if(UNIX)
 	install(FILES "minetestmapper.6" DESTINATION "${MANDIR}/man6")
 endif()
 
-set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Overview mapper for Minetest")
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Overview mapper for Luanti")
 set(CPACK_PACKAGE_VENDOR "celeron55")
 set(CPACK_PACKAGE_CONTACT "Perttu Ahola <celeron55@gmail.com>")
 

Dockerfile

@@ -0,0 +1,24 @@
+ARG DOCKER_IMAGE=alpine:3.20
+FROM $DOCKER_IMAGE AS builder
+
+RUN apk add --no-cache build-base cmake \
+		gd-dev sqlite-dev postgresql-dev hiredis-dev leveldb-dev \
+		ninja
+
+COPY . /usr/src/minetestmapper
+WORKDIR /usr/src/minetestmapper
+
+RUN cmake -B build -G Ninja && \
+    cmake --build build --parallel $(nproc) && \
+    cmake --install build
+
+FROM $DOCKER_IMAGE AS runtime
+
+RUN apk add --no-cache libstdc++ libgcc libpq \
+        gd sqlite-libs postgresql hiredis leveldb
+
+COPY --from=builder /usr/local/share/luanti /usr/local/share/luanti
+COPY --from=builder /usr/local/bin/minetestmapper /usr/local/bin/minetestmapper
+COPY COPYING /usr/local/share/minetest/minetestmapper.COPYING
+
+ENTRYPOINT ["/usr/local/bin/minetestmapper"]

README.rst

@@ -4,10 +4,11 @@ Minetest Mapper C++
 .. image:: https://github.com/minetest/minetestmapper/workflows/build/badge.svg
     :target: https://github.com/minetest/minetestmapper/actions/workflows/build.yml
 
-Minetestmapper generates an overview image from a Minetest map.
+Minetestmapper generates an overview image from a Luanti map.
 
-A port of minetestmapper.py to C++ from https://github.com/minetest/minetest/tree/0.4.17/util.
+A port of minetestmapper.py to C++ from `the obsolete Python script
-This version is both faster and provides more features than the now obsolete Python script.
+<https://github.com/minetest/minetest/tree/0.4.17/util>`_.
+This version is both faster and provides more features.
 
 Minetestmapper ships with a colors.txt file for Minetest Game, if you use a different game or have
 many mods installed you should generate a matching colors.txt for better results.
@@ -39,7 +40,7 @@ for Windows:
 Minetestmapper for Windows can be downloaded `from the Releases section
 <https://github.com/minetest/minetestmapper/releases>`_.
 
-After extracting the archive, it can be invoked from cmd.exe:
+After extracting the archive, it can be invoked from cmd.exe or PowerShell:
 ::
 
 	cd C:\Users\yourname\Desktop\example\path
@@ -116,7 +117,7 @@ zoom:
     Apply zoom to drawn nodes by enlarging them to n*n squares, e.g. ``--zoom 4``
 
 colors:
-    Override auto-detected path to colors.txt, e.g. ``--colors ../minetest/mycolors.txt``
+    Override auto-detected path to colors.txt, e.g. ``--colors ../world/mycolors.txt``
 
 scales:
     Draw scales on specified image edges (letters *t b l r* meaning top, bottom, left and right), e.g. ``--scales tbr``

TileGenerator.cpp

@@ -43,6 +43,8 @@ inline T sat_mul(T a, T b)
 		return std::numeric_limits<T>::max();
 	return res;
 #else
+	// WARNING: the fallback implementation is incorrect since we compute ceil(log(x)) not log(x)
+	// but that's good enough for our usecase...
 	const int bits = sizeof(T) * 8;
 	int hb_a = 0, hb_b = 0;
 	for (int i = bits - 1; i >= 0; i--) {
@@ -426,19 +428,27 @@ void TileGenerator::closeDatabase()
 	m_db = NULL;
 }
 
+static inline int16_t mod16(int16_t y)
+{
+	if (y < 0)
+		return (y - 15) / 16;
+	return y / 16;
+}
+
 void TileGenerator::loadBlocks()
 {
-	const int16_t yMax = m_yMax / 16 + 1;
+	const int16_t yMax = mod16(m_yMax) + 1;
+	const int16_t yMin = mod16(m_yMin);
 
 	if (m_exhaustiveSearch == EXH_NEVER || m_exhaustiveSearch == EXH_Y) {
 		std::vector<BlockPos> vec = m_db->getBlockPos(
-			BlockPos(m_geomX, m_yMin / 16, m_geomY),
+			BlockPos(m_geomX, yMin, m_geomY),
 			BlockPos(m_geomX2, yMax, m_geomY2)
 		);
 
 		for (auto pos : vec) {
 			assert(pos.x >= m_geomX && pos.x < m_geomX2);
-			assert(pos.y >= m_yMin / 16 && pos.y < yMax);
+			assert(pos.y >= yMin && pos.y < yMax);
 			assert(pos.z >= m_geomY && pos.z < m_geomY2);
 
 			// Adjust minimum and maximum positions to the nearest block
@@ -512,7 +522,8 @@ void TileGenerator::createImage()
 void TileGenerator::renderMap()
 {
 	BlockDecoder blk;
-	const int16_t yMax = m_yMax / 16 + 1;
+	const int16_t yMax = mod16(m_yMax) + 1;
+	const int16_t yMin = mod16(m_yMin);
 	size_t count = 0;
 
 	auto renderSingle = [&] (int16_t xPos, int16_t zPos, BlockList &blockStack) {
@@ -529,7 +540,7 @@ void TileGenerator::renderMap()
 		for (const auto &it : blockStack) {
 			const BlockPos pos = it.first;
 			assert(pos.x == xPos && pos.z == zPos);
-			assert(pos.y >= m_yMin / 16 && pos.y < yMax);
+			assert(pos.y >= yMin && pos.y < yMax);
 
 			blk.reset();
 			blk.decode(it.second);
@@ -557,7 +568,7 @@ void TileGenerator::renderMap()
 				int16_t xPos = *it2;
 
 				BlockList blockStack;
-				m_db->getBlocksOnXZ(blockStack, xPos, zPos, m_yMin / 16, yMax);
+				m_db->getBlocksOnXZ(blockStack, xPos, zPos, yMin, yMax);
 				blockStack.sort();
 
 				renderSingle(xPos, zPos, blockStack);
@@ -568,17 +579,17 @@ void TileGenerator::renderMap()
 	} else if (m_exhaustiveSearch == EXH_Y) {
 #ifndef NDEBUG
 		std::cerr << "Exhaustively searching height of "
-			<< (yMax - (m_yMin / 16)) << " blocks" << std::endl;
+			<< (yMax - yMin) << " blocks" << std::endl;
 #endif
 		std::vector<BlockPos> positions;
-		positions.reserve(yMax - (m_yMin / 16));
+		positions.reserve(yMax - yMin);
 		for (auto it = m_positions.rbegin(); it != m_positions.rend(); ++it) {
 			int16_t zPos = it->first;
 			for (auto it2 = it->second.rbegin(); it2 != it->second.rend(); ++it2) {
 				int16_t xPos = *it2;
 
 				positions.clear();
-				for (int16_t yPos = m_yMin / 16; yPos < yMax; yPos++)
+				for (int16_t yPos = yMin; yPos < yMax; yPos++)
 					positions.emplace_back(xPos, yPos, zPos);
 
 				BlockList blockStack;
@@ -591,7 +602,7 @@ void TileGenerator::renderMap()
 			postRenderRow(zPos);
 		}
 	} else if (m_exhaustiveSearch == EXH_FULL) {
-		const size_t span_y = yMax - (m_yMin / 16);
+		const size_t span_y = yMax - yMin;
 		m_progressMax = (m_geomX2 - m_geomX) * span_y * (m_geomY2 - m_geomY);
 #ifndef NDEBUG
 		std::cerr << "Exhaustively searching "
@@ -604,7 +615,7 @@ void TileGenerator::renderMap()
 		for (int16_t zPos = m_geomY2 - 1; zPos >= m_geomY; zPos--) {
 			for (int16_t xPos = m_geomX2 - 1; xPos >= m_geomX; xPos--) {
 				positions.clear();
-				for (int16_t yPos = m_yMin / 16; yPos < yMax; yPos++)
+				for (int16_t yPos = yMin; yPos < yMax; yPos++)
 					positions.emplace_back(xPos, yPos, zPos);
 
 				BlockList blockStack;

ZlibDecompressor.cpp

@@ -29,31 +29,39 @@ ustring ZlibDecompressor::decompress()
 	const size_t size = m_size - m_seekPos;
 
 	ustring buffer;
-	constexpr size_t BUFSIZE = 128 * 1024;
+	constexpr size_t BUFSIZE = 32 * 1024;
-	unsigned char temp_buffer[BUFSIZE];
 
 	z_stream strm;
 	strm.zalloc = Z_NULL;
 	strm.zfree = Z_NULL;
 	strm.opaque = Z_NULL;
 	strm.next_in = Z_NULL;
-	strm.avail_in = size;
+	strm.avail_in = 0;
 
 	if (inflateInit(&strm) != Z_OK)
 		throw DecompressError();
 
 	strm.next_in = const_cast<unsigned char *>(data);
+	strm.avail_in = size;
+	buffer.resize(BUFSIZE);
+	strm.next_out = &buffer[0];
+	strm.avail_out = BUFSIZE;
+
 	int ret = 0;
 	do {
-		strm.avail_out = BUFSIZE;
-		strm.next_out = temp_buffer;
 		ret = inflate(&strm, Z_NO_FLUSH);
-		buffer.append(temp_buffer, BUFSIZE - strm.avail_out);
+		if (strm.avail_out == 0) {
+			const auto off = buffer.size();
+			buffer.reserve(off + BUFSIZE);
+			strm.next_out = &buffer[off];
+			strm.avail_out = BUFSIZE;
+		}
 	} while (ret == Z_OK);
 	if (ret != Z_STREAM_END)
 		throw DecompressError();
 
 	m_seekPos += strm.next_in - data;
+	buffer.resize(buffer.size() - strm.avail_out);
 	(void) inflateEnd(&strm);
 
 	return buffer;

include/config.h

@@ -7,9 +7,5 @@
 #ifdef USE_CMAKE_CONFIG_H
 #include "cmake_config.h"
 #else
-#define USE_POSTGRESQL 0
+#error missing config
-#define USE_LEVELDB 0
-#define USE_REDIS 0
-
-#define SHAREDIR "/usr/share/minetest"
 #endif

mapper.cpp

@@ -39,7 +39,7 @@ static void usage()
 	};
 	const char *top_text =
 		"minetestmapper -i <world_path> -o <output_image.png> [options]\n"
-		"Generate an overview image of a Minetest map.\n"
+		"Generate an overview image of a Luanti map.\n"
 		"\n"
 		"Options:\n";
 	const char *bottom_text =

minetestmapper.6

@@ -1,6 +1,6 @@
 .TH MINETESTMAPPER 6
 .SH NAME
-minetestmapper \- generate an overview image of a Minetest map
+minetestmapper \- generate an overview image of a Luanti map
 .SH SYNOPSIS
 .B minetestmapper
 \fB\-i\fR \fIworld_path\fR
@@ -9,9 +9,9 @@ minetestmapper \- generate an overview image of a Minetest map
 See additional optional parameters below.
 .SH DESCRIPTION
 .B minetestmapper
-generates an overview image of a minetest map. This is a port of
+generates an overview image of a Luanti map. This is a port of
 the original minetestmapper.py to C++, that is both faster and
-provides more functionality than the deprecated Python script.
+provides more functionality than the obsolete Python script.
 .SH MANDATORY PARAMETERS
 .TP
 .BR \-i " " \fIworld_path\fR
@@ -86,7 +86,7 @@ Zoom the image by using more than one pixel per node, e.g. "--zoom 4"
 
 .TP
 .BR \-\-colors " " \fIpath\fR
-Forcefully set path to colors.txt file (it's autodetected otherwise), e.g. "--colors ../minetest/mycolors.txt"
+Forcefully set path to colors.txt file (autodetected otherwise), e.g. "--colors ../world/mycolors.txt"
 
 .TP
 .BR \-\-scales " " \fIedges\fR

util/build-mingw.sh

@@ -7,7 +7,7 @@ variant=win32
 [[ "$(basename "$CXX")" == "x86_64-"* ]] && variant=win64
 
 #######
-# this expects unpacked libraries similar to what Minetest's buildbot uses
+# this expects unpacked libraries similar to what Luanti's buildbot uses
 # $extradlls will typically point to the DLLs for libgcc, libstdc++ and libpng
 libgd_dir=
 zlib_dir=

util/ci/script.sh

@@ -4,12 +4,17 @@ install_linux_deps() {
 	local pkgs=(cmake libgd-dev libsqlite3-dev libleveldb-dev libpq-dev libhiredis-dev libzstd-dev)
 
 	sudo apt-get update
-	sudo apt-get install -y --no-install-recommends ${pkgs[@]} "$@"
+	sudo apt-get remove -y 'libgd3' nginx || : # ????
+	sudo apt-get install -y --no-install-recommends "${pkgs[@]}" "$@"
 }
 
 run_build() {
-	cmake . -DCMAKE_BUILD_TYPE=Debug \
+	local args=(
+		-DCMAKE_BUILD_TYPE=Debug
 		-DENABLE_LEVELDB=1 -DENABLE_POSTGRESQL=1 -DENABLE_REDIS=1
+	)
+	[[ "$CXX" == clang* ]] && args+=(-DCMAKE_CXX_FLAGS="-fsanitize=address")
+	cmake . "${args[@]}"
 
 	make -j2
 }

util/dumpnodes/init.lua

@@ -1,7 +1,7 @@
 local function get_tile(tiles, n)
 	local tile = tiles[n]
 	if type(tile) == 'table' then
-		return tile.name
+		return tile.name or tile.image
 	end
 	return tile
 end
@@ -15,7 +15,7 @@ local function pairs_s(dict)
 	return ipairs(keys)
 end
 
-minetest.register_chatcommand("dumpnodes", {
+core.register_chatcommand("dumpnodes", {
 	description = "Dump node and texture list for use with minetestmapper",
 	func = function()
 		local ntbl = {}
@@ -30,7 +30,7 @@ minetest.register_chatcommand("dumpnodes", {
 				ntbl[prefix][name] = true
 			end
 		end
-		local out, err = io.open(minetest.get_worldpath() .. "/nodes.txt", 'wb')
+		local out, err = io.open(core.get_worldpath() .. "/nodes.txt", 'wb')
 		if not out then
 			return true, err
 		end
@@ -39,7 +39,7 @@ minetest.register_chatcommand("dumpnodes", {
 			out:write('# ' .. prefix .. '\n')
 			for _, name in pairs_s(ntbl[prefix]) do
 				local nn = prefix .. ":" .. name
-				local nd = minetest.registered_nodes[nn]
+				local nd = core.registered_nodes[nn]
 				local tiles = nd.tiles or nd.tile_images
 				if tiles == nil or nd.drawtype == 'airlike' then
 					print("ignored(2): " .. nn)

util/generate_colorstxt.py

@@ -13,14 +13,14 @@ except:
 ############
 ############
 # Instructions for generating a colors.txt file for custom games and/or mods:
-# 1) Add the dumpnodes mod to a Minetest world with the chosen game and mods enabled.
+# 1) Add the dumpnodes mod to a Luanti world with the chosen game and mods enabled.
 # 2) Join ingame and run the /dumpnodes chat command.
 # 3) Run this script and poin it to the installation path of the game using -g,
 #    the path(s) where mods are stored using -m and the nodes.txt in your world folder.
 #    Example command line:
-#      ./util/generate_colorstxt.py --game /usr/share/minetest/games/minetest_game \
+#      ./util/generate_colorstxt.py --game /usr/share/luanti/games/minetest_game \
 #        -m ~/.minetest/mods ~/.minetest/worlds/my_world/nodes.txt
-# 4) Copy the resulting colors.txt file to your world folder or to any other places
+# 4) Copy the resulting colors.txt file to your world folder or to any other place
 #    and use it with minetestmapper's --colors option.
 ###########
 ###########