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rewrite readme and install; init.sh for install

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INSTALL.md
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# Getting Started # Getting Started
Assembling **pokecrystal.gbc** requires a certain **Pokemon Crystal** rom: Assembling **pokecrystal.gbc** requires a certain **Pokémon Crystal** rom:
``` Pokemon - Crystal Version (UE) (V1.0) [C][!].gbc
Pokemon - Crystal Version (UE) (V1.0) [C][!].gbc md5: 9f2922b235a5eeb78d65594e82ef5dde
md5: 9f2922b235a5eeb78d65594e82ef5dde
```
Save it as **baserom.gbc** in the repository.
Feel free to ask us on
**[nucleus.kafuka.org #skeetendo](https://kiwiirc.com/client/irc.nolimitzone.com/?#skeetendo)**
if something goes wrong.
# Windows
If you're on Windows and can't install Linux, **Cygwin** is a great alternative.
## Installing Cygwin
Cygwin provides a virtual Linux environment on Windows systems. Just get **setup.exe**.
**http://cygwin.com/install.html**
During the install:
* Keep the defaults.
* Most mirrors are molasses. Use **http://mirrors.kernel.org**.
* From the package selection, pick:
* **wget**
* **make**
* **git**
* **python**
* **python-setuptools**
* **unzip**
## Using Cygwin
Launch the **Cygwin terminal**.
Maybe you know your way around the Linux terminal ( **bash** ).
If not, a crash course:
```bash
# list files in current directory
ls
# show current directory
pwd
# change directory
cd /away/we/go
```
## Getting up and running
We need three things to assemble the source into a rom.
1. **rgbds**
2. a **pokecrystal** repository
3. a **base rom**
We use **rgbds** to spit out a Game Boy rom from source.
```bash
cd /usr/local/bin
wget http://iimarck.us/etc/rgbds-20130811.zip
unzip -j rgbds-20130811.zip
rm rgbds-20130811.zip
```
The **pokecrystal** repository contains the source files used to create the rom.
```bash
cd ~
git clone https://github.com/kanzure/pokecrystal
cd pokecrystal
# install python requirements
easy_install pip
pip install -r requirements.txt
```
Not everything is included in the source yet.
Missing patches are copied from a **base rom** (not included).
```
Pokemon - Crystal Version (UE) (V1.0) [C][!].gbc
md5: 9f2922b235a5eeb78d65594e82ef5dde
```
Name it **baserom.gbc**.
**pokecrystal** only compiles with the use of a git submodule. To activate the submodule type:
```
git submodule init
git submodule update
```
Now you should be able to build **pokecrystal.gbc** for the first time.
This compiles a new rom from the source code, with any patches filled in from the base rom.
```bash
make
```
This ought to take **between 3 and 15 seconds**, depending on your computer.
If the last line is `cmp baserom.gbc pokecrystal.gbc`, the build was successful!
Your first build processes every source file at once.
After that, **only modified source files have to be processed again**,
so compiling again should be a few seconds faster.
# Linux # Linux
```bash Linux dependencies. OSX users already have these after installing Xcode.
sudo apt-get install make gcc bison git python python-setuptools
sudo easy_install pip
# install rgbds sudo apt-get install make gcc bison git python python-setuptools
git clone git://github.com/bentley/rgbds.git
cd rgbds
make
sudo make install
cd ..
# download pokecrystal
git clone git://github.com/kanzure/pokecrystal.git
cd pokecrystal
# grab extras/ which is required for compiling
git submodule init
git submodule update
# install python requirements
pip install -r extras/requirements.txt
# use hexdump to diff binary files
git config diff.hex.textconv hexdump
```
Put your base rom in the pokecrystal repository. Name it **baserom.gbc**.
To compile the rom from source:
```bash
make
```
That will take between 3 and 15 seconds, depending on your computer.
If you see `cmp baserom.gbc pokecrystal.gbc` as the last line, the build was successful! Rejoice!
# Now what? Set up the **pokecrystal** repository:
**[pokecrystal.asm](https://github.com/kanzure/pokecrystal/blob/master/pokecrystal.asm)** is a good starting point. git clone git://github.com/kanzure/pokecrystal.git
The structure of the source is laid out here. cd pokecrystal
./init.sh
Copy the Pokémon Crystal rom to this directory. Name it **baserom.gbc**.
Now you should be able to build **pokecrystal.gbc** for the first time.
make
Your first build may take about a minute. Subsequent builds are much faster (5-20 seconds).
* Other **make targets** that may come in handy: # OSX
* `make clean` deletes any preprocessed source files (.tx), rgbds object files and pokecrystal.gbc. Download and install **Xcode**. Then follow the Linux instructions.
* `make pngs` decompresses any **lz** files in gfx/ and then exports any graphics files to **png**.
* `make lzs` does the reverse. This is already part of the build process, so **modified pngs will automatically be converted to 2bpp and lz-compressed** without any additional work.
* **Can't find something?** # Windows
Anyone can add to the source. There's lots to be uncovered.
* **Do your own thing!** Not yet.
The asm source is hack-friendly, and the supplementary scripts in extras/ can be used for other projects.
We'll be happy to answer any **questions** on
**[nucleus.kafuka.org #skeetendo](https://kiwiirc.com/client/irc.nolimitzone.com/?#skeetendo)**.
Other **make targets** that may come in handy:
`make clean` deletes any preprocessed source files (.tx), rgbds object files and pokecrystal.gbc, in case something goes wrong.
`make pngs` decompresses any **lz** files in gfx/ and then exports any graphics files to **png**.
`make lzs` does the reverse. This is already part of the build process, so **modified pngs will automatically be converted to 2bpp and lz-compressed** without any additional work.

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README.md
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# Pokémon Crystal # Pokémon Crystal
This is a hand-crafted disassembly of Pokémon Crystal. This is a disassembly of Pokémon Crystal.
The source code in this project successfully converts back into a ROM image. All source code is meticulously commented. The source code in this project successfully converts back into a ROM image.
The following rom is used as a base:
## Base ROM Pokemon - Crystal Version (UE) (V1.0) [C][!].gbc
md5: 9f2922b235a5eeb78d65594e82ef5dde
The following rom is required for compiling: To set up the repository, see [**INSTALL.md**](INSTALL.md).
```
Pokemon - Crystal Version (UE) (V1.0) [C][!].gbc
md5: 9f2922b235a5eeb78d65594e82ef5dde
```
Eventually this will not be necessary.
## What can I do?
* Are we missing something? Make a pull request! Contributions are welcome.
* Take a look at some of the disasm tools in **extras/**. Most of the scripts are generalized enough to take apart other Game Boy games.
* Tackle some **[issues](https://github.com/kanzure/pokecrystal/issues)**!
## See also ## See also
* Hang out with us on irc: **[nucleus.kafuka.org #skeetendo](https://kiwiirc.com/client/irc.nolimitzone.com/?#skeetendo)** * Disassembly of [**Pokémon Red**](https://github.com/iimarckus/pokered)
* Disassembly of **[Pokémon Red](http://bitbucket.org/iimarckus/pokered)**. * irc: **nucleus.kafuka.org** [**#skeetendo**](https://kiwiirc.com/client/irc.nolimitzone.com/?#skeetendo)

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init.sh Executable file
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#!/bin/sh
# install rgbds
git clone git://github.com/bentley/rgbds.git && \
cd rgbds && \
make && \
sudo make install && \
cd .. && \
rm -rf rgbds
# set up the submodule (extras/)
git submodule init && \
git submodule update && \
sudo easy_install pip && \
pip install -r extras/requirements.txt
# diff binary files using hexdump
git config diff.hex.textconv "hexdump -C"