Main refactor

.gitignore

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+*
+!*.*
+
+*.o
+*.png
+*.xml
+*.json
+*.txt
+

README.md

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+## McMap by Zahl
+
+This is a utility to create maps of Minecraft worlds from an isometric perspective. It can be used to create timelapses with a script. See [here](http://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-tools/1260548-mcmap-isometric-renders-ssp-smp-minecraft-1-3-1]) for more information.
+
+At the time of writing, it's compatible with Minecraft versions up to 1.9.X.
+
+To build, you need `make`, `g++`, and `libpng`. On Ubuntu 14.04, installing dependencies might look something like:
+
+`sudo apt-get install -y build-essential libpng12-dev`
+
+To build, run `make` in the base directory.
+
+For MSVC++, get "zlib compiled DLL" from http://www.zlib.net/ and read USAGE.txt
+gcc from MinGW works with the static library of zlib; however, trying
+static linking in MSVC++ gave me weird results and crashes (v2008) 
+on linux, static linking works too, of course, but shouldn't be needed
+
+
+For help, run `mcmap` without arguments or with the `-h` flag.
+
+### Example usage
+
+`./mcmap ~/.minecraft/saves/World1` would render your entire singleplayer world in slot 1.
+
+`./mcmap -night -from -10 -10 -to 10 10 ~/.minecraft/saves/World1` would render the same world but at night, and only from chunk (-10 -10) to chunk (10 10)
+
+If you're using Windows, your singleplayer world in slot 1 is probably in `%%APPDATA%%\\.minecraft\\saves\\World1` instead.
+
+### Options
+Format: `./mcmap [-from X Z -to X Z] [-night] [-cave] [-noise VAL] [...] WORLDPATH`
+
+- `-from X Z`     sets the coordinate of the chunk to start rendering at
+- `to X Z`       sets the coordinate of the chunk to end rendering at
+> Note: Currently you need both -from and -to to define
+> bounds, otherwise the entire world will be rendered.
+- `-cave`         renders a map of all caves that have been explored by players
+- `-blendcave`    overlay caves over normal map; doesn't work with incremental
+                rendering (some parts will be hidden)
+- `-night`        renders the world at night using blocklight (torches)
+- `-skylight`     use skylight when rendering map (shadows below trees etc.)
+> Note: using this with -night makes a difference
+- `-noise VAL`    adds some noise to certain blocks, reasonable values are 0-20
+- `-height VAL`   maximum height at which blocks will be rendered
+- `-min/max VAL`  minimum/maximum Y index (height) of blocks to render
+- `-file NAME`    sets the output filename to `NAME`; default is `output.png`
+- `-mem VAL`      sets the amount of memory (in MiB) used for rendering. `mcmap` will use incremental rendering or disk caching to stick to this limit. Default is 1800.
+- `-colors NAME`  loads user defined colors from file `NAME`
+- `-dumpcolors`   creates a file which contains the default colors being used
+                for rendering. Can be used to modify them and then use `-colors`
+- `-north -east -south -west`
+                controls which direction will point to the *top left* corner
+                it only makes sense to pass one of them; East is default
+- `-blendall`     always use blending mode for blocks
+- `-hell`         render the hell/nether dimension of the given world
+- `-end`          render the end dimension of the given world
+- `-serverhell`   force cropping of blocks at the top (use for nether servers)
+- `-nowater`  	render map with water being clear (as if it were air)
+- `-texture NAME` extract colors from png file `NAME`; eg. `terrain.png`
+- `-biomes`       apply biome colors to grass/leaves; requires that you run
+                Donkey Kong's biome extractor first on your world
+- `-biomecolors PATH`  load `grasscolor.png` and `foliagecolor.png` from `PATH`
+- `-info NAME`    Write information about map to file `NAME` You can choose the
+                format by using file extensions `.xml`, `.json` or `.txt` (default)
+- `-split PATH`   create tiled output (128x128 to 4096x4096) in given `PATH`
+- `-marker c x z` place marker at x z with color c (r g b w)
+
+`WORLDPATH` is the path of the desired Minecraft world.