Rogue-Python Engine 0.0.4

A Simple ray-casting engine built with Python and PyGame.

Designed to be used for writing retro-styled FPP roguelike dungeon crawler games, like Dungeon Master series or the newer Legend of Grimrock.

This program is mainly written for educational purposes. The raycasting algorithm has been rewritten in a more Object-Oriented fashion, where a Renderer-class object throws Ray-class objects in front of the Camera-class object. I think thanks to the Object-Oriented approach it's easier to understand what is actually happening during the rendering process – even if you plan to implement it in a procedural fashion.

The engine intentionally allows grid-based movement only! If you're looking for a more Wolf3D-like movement look no further than mlambir's PygameFPS.

Legal:

This code is distributed under GPL v3 License.

Credits:

Dependencies:

May work with older versions, but these are what I used:

CPython 2.7.5
PyGame 1.9.2pre
PyGame itslef depends on SDL so you need to have development libraries istalled for it to run.

===

Current version features:

Raycasting Textured Walls
Raycasting Transparent Sprites
Movement and roation
Collision detection
Loading maps from textfiles

Keys:

Movement keys are hardcoded (as long as anything is hardcoded in Python's code) and go like this:

W, S, A, D - move and rotate
Q, E - strafe
Esc - quit

======

Installing PyGame on OSX

Based on: python 3.3 with pygame under mac os lion / mountain lion / mavericks post, on albrecht.LT

Download and Install Xcode from AppStore
Install homebrew:

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
Update your brew: brew update
Install Python (optional)

You can now install a desired version of Python from homebrew, but a more version-managing-oriented approach is reccomended. I myself use Pyenv, which is an exact rbenv clone, but for Python. That said, the described method should work with whichever version your system has installed (OSX 10.8 and 10.9 come with 2.7.5) if you don't want to install different versions.
You need few tools to compile PyGame
```
brew install hg
brew install sdl sdl_image sdl_mixer sdl_ttf portmidi
brew install --HEAD smpeg
```
if you get an error:

Error: No available formula for smpeg

use the command:

brew install --HEAD https://raw.github.com/Homebrew/homebrew-headonly/master/smpeg.rb

(Sometimes the server is slow. You may have to repeat the command if you get a connection reset error.)
Install pip: easy_install3 pip

(if you installed Python via PythonBrew and VirtualEnv you should have the pip command working, so you can skip this step):
Install PyGame:
1. Try to install normally:
  
  pip install pygame
  
  Most probably you'll get this error:
  
  src/scale_mmx64.c:424:27: error: invalid instruction mnemonic 'movsxl'
  
  Which you will need to fix manually in the cloned PyGame's repository. If you didn't and PyGame installed succesfully... well... lucky you!
2. Clone the repository.
  
  hg clone https://bitbucket.org/pygame/pygame
  
  (It's best to clone while in ~/Downloads)
3. Enter the repo directory and replace the file pygame/src/scale_mmx64.c with Albrecht's scale_mmx64
4. Install pygame
  
  pip3 install ~/Downloads/pygame

=====

ellmo / rogue-python-engine