pokecrystal/INSTALL.md

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# Getting Started
Compiling **pokecrystal.gbc** requires a certain **Pokemon Crystal** rom:
```
Pokemon - Crystal Version (UE) (V1.0) [C][!].gbc
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 are 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**.
## 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 a couple more things to be able to compile.
If you're feeling lazy, just paste these commands into your terminal.
```bash
apt-cyg install make git wget python python-setuptools
easy_install pip
```
**rgbds** will let you compile Game Boy roms.
```bash
cd ~
# download rgbds binaries
wget http://diyhpl.us/~bryan/irc/pokered/rgbds/rgbds.zip
unzip rgbds.zip
rm rgbds.zip
# make rgbds accessible for all time
export PATH=$PATH:`pwd`/rgbds
echo "export PATH=$PATH" >> ~/.bashrc
```
Set up the **pokecrystal** repository:
```bash
git clone https://github.com/kanzure/pokecrystal
cd pokecrystal
# install python requirements
pip install -r requirements.txt
```
## Don't forget baserom.gbc!!
Make sure you downloaded a base rom. Name it **baserom.gbc**.
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 you see `cmp baserom.gbc pokecrystal.gbc` as the last line, the build was successful!
Your first compile processes every source file at once. After that, **only modified source files have to be reprocessed**, so compiling again should be a few seconds faster.
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.
# Linux
```bash
sudo apt-get install make gcc bison git python python-setuptools
# unittest2 is required if using python2.6
sudo easy_install unittest2
sudo easy_install pip
# download rgbds source code
git clone git://github.com/bentley/rgbds.git
# compile rgbds
cd rgbds
make
sudo make install
# check if rgbasm is installed now
which rgbasm
# download pokecrystal
git clone git://github.com/kanzure/pokecrystal.git
cd pokecrystal
# install python requirements
pip install -r requirements.txt
# use hexdump to diff binary files
git config diff.hex.textconv hexdump
```
To compile the rom from asm 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?
**main.asm** is a good starting point. The structure of the source is laid out here.
* **Can't find something?** Anyone can add to the source. There's lots to be uncovered.
* **Do your own thing!** 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)**.