87 lines
2.9 KiB
Plaintext
87 lines
2.9 KiB
Plaintext
====================
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Minecraft Overviewer
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====================
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By Andrew Brown
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Generates large resolution images of a Minecraft map.
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In short, this program reads in Minecraft world files and renders very large
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resolution images. It performs a similar function to the existing Minecraft
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Cartographer program.
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I wrote this with an additional goal in mind: to generate large images that I
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could zoom in and see details.
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Using the Overviewer
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====================
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Requirements
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------------
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This program requires:
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* Python 2.6
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* PIL (Python Imaging Library)
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* Numpy
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I developed and tested this on Linux. It ought to work on Windows and Mac, but
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I haven't tried it.
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Running
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-------
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Right now there's only a console interface. Here's how to use it:
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To render a world, run the renderer.py script like this:
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python renderer.py <Path to World> <image out.png>
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The <Path to world> is the path to the directory containing your world files.
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Cave mode
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---------
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Cave mode renders all blocks that have no sunlight hitting them. Additionally,
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blocks are given a colored tint according to how deep they are. Red are closest
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to bedrock, green is close to sea level, and blue is close to the sky.
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Cave mode is like normal mode, but give it the "-c" flag. Like this:
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python renderer.py -c <Path to World> <image out.png>
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Deleting the Cache
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------------------
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The Overviewer keeps a cache of each world chunk it renders stored within your
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world directory. When you generate a new image of the same world, it will only
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re-render chunks that have changed, speeding things up a lot.
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If you want to delete these images, to save space or perhaps you've changed
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texture packs, run the renderer.py script with the -d flag:
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python renderer.py -d <Path to World>
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To delete the cave mode images, run it with -d and -c
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python renderer.py -d -c <Path to World>
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Using More Cores
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----------------
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The Overviewer will render each chunk separately in parallel. You can tell it
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how many processes to start with the -p option. This is set to a default of 2,
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which will use 2 processes to render chunks, and 1 to render the final image.
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python renderer.py -p 3 <Path to World> <image out.png>
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Bugs
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====
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* This program is memory intensive. Obviously if you have a 20000x10000 pixel
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image, it's going to take up quite a bit of room. This program may not work
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if you have a gigantic world. I am working on a solution to this, possibly
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splitting up the final image so it's not as big. Even if the image is
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successfully generated, my image viewer has quite some trouble showing it.
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* Some types of block are not rendered correctly yet. This includes torches,
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mushrooms, flowers, and anything that is not a traditional "block". They are
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still rendered, but look funny.
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* Water transparency is not working yet. I'm trying to come up with a good
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solution, but I think it has to do with the image blending algorithm in the
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Python Imaging Library. There may not be an easy solution to this.
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