This is iOS port of the complete open-source clone/rewrite of Doukutsu Monogatari (also known as Cave Story) originally created by rogueeve (kty@lavabit.com).

Demonstration: http://youtu.be/jH2xsjXx28U

Game has been tested on jailbroken iPhone 4S (iOS 5.1.1) and non-jailbroken iPad 2 (iOS 5.1.1).

How to install development build:

tl;dr video tutorial http://youtu.be/scSGqTP4AFs

You need jailbroken device with Cydia. I have no apple developer profile so I unable to build package for non-jailbroken devices.
Open Cydia.
Go to "Manage" - "Sources"
Press "Edit" - "Add"
Enter link to Cydia source: http://pilin.github.com/NXEngine-iOS/repo/
New source "NXEngine-iOS dev" must appear. Install package from it.

Biggest changes:

Original engine has been transfered to SDL2.
Render system has been changed to use hardware accelerated SLD2 API.
Graphics resolution will be automatically selected in runtime. In theory, it must correctly run on all iPad's and iPhones version >= 4.
Original engine has been changed to support separate file locations for game resources (read-only), save files (read-write, persistent) and cache files (read-write, temporary).
Primitive virtual joypad has been implemented.
Touch control of in-game buttons, dialogs, e.t.c.

Build dependencies:

SDL2
SDL_ttf 2
Freetype 2

How to build:

Check out game source:

git clone git://github.com/PIlin/NXEngine-iOS.git

Downaload dependencies into iOS/deps folder. Use script:
```
cd NXEngine-iOS/iOS/deps
./deploy.sh
```
Xcode porject is located in NXEngine-iOS/iOS/CaveStory.xcodeproj You can also use xcodebuild utility from command line:
```
cd NXEngine-iOS/iOS
xcodebuild
```

How to run on jailbroken device:

Configure your environment: http://iphonedevwiki.net/index.php/Xcode#Developing_without_Provisioning_Profile
Don't forget to set -gta flag in project properties.

How to build deb-pack

Install dpkg. For example, from homebrew.

Build package:

cd NXEngine-iOS/iOS
xcodebuild install
make deb

Package will be in

NXEngine-iOS/iOS/deb/CaveStory.deb

Links and acknowledgment:

Original NXEngine project: http://nxengine.sourceforge.net/

Liberation Mono font: https://fedorahosted.org/liberation-fonts/

Application icons were prepared by Sergey Osminogov (https://plus.google.com/u/0/109504104068874319771). Source image for icons was made by NYAssassin (http://nyassassin.deviantart.com/).

PIlin / NXEngine-iOS

readme