athena

athena is a civilization builder game in pre-alpha stage.

Currently it is mostly still a terrain generator and visualizer.

I use other bits of code to help with some tricky math stuff - I cite them in comments where I use them.

Compilation

Type "make" to compile. To run, type "./athena".

Key	Function
q	quit
b	blur heightmap
u	decreases heightmap by 1
i	increases heightmap by 1
n	set normal map
j	set wind map (needs normal map)
m	run moisture engine (needs wind map and normal map)
r	rain!
w	run water
e	if water is running, allow erosion.
arrows	moves around terrain
shift	increases heightmap movement / shifting speed
s	attempt to save colormap and heightmap

Requires: cmake, sdl2, sdl2_image, sdl2_ttf, glm

Classes and their functions

TrData - handles importing the data for different entity types and formulas. Currently doesn't handle maps and stuff (I don't have much Map or Game IO right now), but it might later.
TrECS - handles the main Entity Component System pattern for game entities. I don't really use the "System" part of the ECS design pattern right now, but I probably will later.
TrGUI - handles the GUI system. Currently does not use ECS, but it probably will later.
TrMap - handles rendering and simulating the map data, such as rain, shadow mapping, ray tracing, day/night cycle, erosion, and more.
TrRenderLoop - handles the updating and rendering, depending on what "state" of the game you're in - different TrRenderLoop's handles the main menu, the main game, and transitions.
TrUtils - holds a bunch of generic helper functions.

External includes

fast-cpp-csv-parser - currently used in parsing the data files. I think I might make my own later with c++'s regex system.
fft - runs a fast fourier transform based ocean wave simulation. I use it for bump-mapping water.