Zenith DOOM

This project ports the DOOM BSP renderer to Zenith for use in custom games. It includes a zos/ directory in src/ which has includes that emulate Zenith types, functions, and globals. This is to make it easier on us to test from our desktop operating systems while porting.

Zenith Functions, Types, and Globals

These are accessable by including zos/ header files. Includes from zos/ as well as c-specific code should be wrapped in #ifdef NOT_ZENITH. main.c is for creating the executable to test outside of Zenith. Run the file named after the game or application if you are in Zenith.

Set Up With Visual Studio

Use file->open->cmake in Visual Studio to open this project. You can set the configuration to x64-debug or x64-release (you might have to add them with the Manage Configurations... button in the dropdown). It won't built x86 because I only copied x64 binaries into libs/.

You need to copy SDL2.dll to the out/build/x64- directory of your choice. For some reason Visual Studio does not want to do this by default.

Drawing a Pixel

This application uses fullscreen in Zenith and disables the OS rendering to give complete unrestricted access to the framebuffer. You can draw to this framebuffer with:

text.fb_alias[y * GR_WIDTH + x] = color; // Color is a CBGR24

Colors in Zenith are defined as:

class CBGR24
{
	U8 b, g, r, pad;
}

Macros such as GR_WIDTH and GR_HEIGHT can be used to get the screen size.