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+# MinedMap
+
+* Render beautiful maps of your [Minecraft](https://minecraft.net/) worlds!
+* Put them on a webserver and view them in your browser!
+* Compatible with unmodified Minecraft Java Edition 1.8 up to 1.13 (no mod installation necessary!)
+* Illumination layer: the world at night
+* Fast: create a full map for a huge 3GB savegame in less than 5 minutes
+* Incremental updates: only recreate map tiles for regions that have changed
+* Very low memory usage: typically uses less than 5MB of RAM
+
+![Screenshot](docs/images/MinedMap.png)
+
+
+## How to use
+
+MinedMap consists of two components: a map renderer generating map tiles from
+Minecraft save games, and a viewer for displaying and navigating maps in a browser
+based on [Leaflet](https://leafletjs.com/). The map renderer is heavily inspired by
+[MapRend](https://github.com/YSelfTool/MapRend), but it has been implemented in C++
+from scratch for highest performance.
+
+The viewer expects the the map data in a directory named `data`. To generate a new
+map, create this empty directory inside the viewer directory. Next, to generate the
+map files run MinedMap passing the source and the destination paths on the command
+line:
+```shell
+./MinedMap /path/to/save/game /path/to/viewer/data
+```
+The save game is stored in `saves` inside your Minecraft main directory
+(`~/.minecraft` on Linux, `C:\Users\<username>\AppData\Roaming\.minecraft` on Windows)
+in a subdirectory with the name of your world.
+
+The first map generation might take a while for big worlds, but subsequent calls will
+only rebuild tiles for region files that have changed, rarely taking more than a second
+or two. This makes it feasible to update the map very frequently, e.g. by running
+MinedMap as a Cron job every minute.
+
+Note that it is not possible to open the viewer *index.html* without a webserver, as
+it cannot load the generated map information from `file://` URIs. For testing purposes,
+you can use a minimal HTTP server, e.g. (if you have Python installed):
+```shell
+python3 -m http.server
+```
+This test server is very slow and cannot handle multiple requests concurrently, so use
+a proper webserver like [nginx](https://nginx.org/) or upload the viewer together with
+the generated map files to public webspace to make the map available to others.
+
+
+## Building MinedMap
+
+Precompiled MinedMap binaries for Windows (32bit and 64bit versions) are available under
+"Releases" on the Github page. On other platforms, MinedMap must be built from source.
+
+MinedMap has been tested to work on Windows and Linux. I assume it can also be
+built for MacOS and pretty much any POSIX-like system, but I didn't check. ¯\\\_(ツ)\_/¯
+
+To build from source, you need Git, CMake, the GCC toolchain and the development
+files for the libraries *zlib* and *libpng* (packages *git*, *cmake*, *build-essential*,
+*zlib1g-dev* and *libpng-dev* on Debian/Ubuntu).
+
+Use the following commands to build:
+```shell
+git clone https://github.com/NeoRaider/MinedMap.git # Or download a release ZIP and unpack it
+mkdir MinedMap-build
+cd MinedMap-build
+cmake ../MinedMap -DCMAKE_BUILD_TYPE=RELEASE
+make
+```
+After a successful build, the MinedMap renderer binary can be found in the *src*
+subdirectory of the build dir `MinedMap-build`. The viewer is located in the cloned
+Git repository `MinedMap`.
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