Phil Philanatidae

Intro

The below is a breakdown / bird's eye view of how a sparse-array backed ECS like EnTT or Shipyard works.

Please see the thanks and references at the bottom - without their help I would not have been able to share this breakdown with you... everything here is really just notes and rephrasing of what they've written already :)

Also, these notes do not cover archetype systems (like unity) nor adaptations of archetypes (like in Flecs). Though there's a couple comparative footnotes at the end.

Here we go!

	macOS Big Sur Icon Template for Affinity Photo (c) by Yoshimasa Niwa

	macOS Big Sur Icon Template for Affinity Photo is licensed under a
	Creative Commons Attribution 4.0 International License.

	You should have received a copy of the license along with this
	work. If not, see <http://creativecommons.org/licenses/by/4.0/>.

	# Cross toolchain configuration for using clang-cl.

	set(CMAKE_SYSTEM_NAME Windows)
	set(CMAKE_SYSTEM_VERSION 10.0)
	set(CMAKE_SYSTEM_PROCESSOR AMD64)

	set(CMAKE_C_COMPILER "/usr/bin/clang-cl-9")
	set(CMAKE_CXX_COMPILER "/usr/bin/clang-cl-9")
	set(CMAKE_LINKER "/usr/bin/lld-link-9")

	List {
	Name: "Entity properties editor";
	IsModal: true;
	HorizontalAlignment: Alignment.Middle;
	VerticalAlignment: Alignment.Middle;
	BackgroundColor: [32 0 128 192];
	Margin: 10;
	Padding: 10;

	Children: [

	# Enable Metal validation layer: 0FF-0, ON-1
	export METAL_DEVICE_WRAPPER_TYPE=1
	export METAL_ERROR_MODE=5
	export METAL_DEBUG_ERROR_MODE=5

	# Clean and make
	make clean && make

	# Execute
	./YourExecutableName

	/* This is free and unencumbered software released into the public domain.

	Anyone is free to copy, modify, publish, use, compile, sell, or
	distribute this software, either in source code form or as a compiled
	binary, for any purpose, commercial or non-commercial, and by any
	means.

	In jurisdictions that recognize copyright laws, the author or authors
	of this software dedicate any and all copyright interest in the
	software to the public domain. We make this dedication for the benefit

	CC := g++
	CFLAGS := -Wall -g
	TARGET := test

	# $(wildcard .cpp /xxx/xxx/.cpp): get all .cpp files from the current directory and dir "/xxx/xxx/"
	SRCS := $(wildcard *.cpp)
	# $(patsubst %.cpp,%.o,$(SRCS)): substitute all ".cpp" file name strings to ".o" file name strings
	OBJS := $(patsubst %.cpp,%.o,$(SRCS))

	all: $(TARGET)

	set(LIBFOO_TAR_HEADERS
	"${CMAKE_CURRENT_BINARY_DIR}/include/foo/foo.h"
	"${CMAKE_CURRENT_BINARY_DIR}/include/foo/foo_utils.h"
	)

	add_custom_command(OUTPUT ${LIBFOO_TAR_HEADERS}
	COMMAND ${CMAKE_COMMAND} -E tar xzf "${CMAKE_CURRENT_SOURCE_DIR}/libfoo/foo.tar"
	COMMAND ${CMAKE_COMMAND} -E touch ${LIBFOO_TAR_HEADERS}
	WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/include/foo"
	DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/libfoo/foo.tar"

	// -------------------------------------------------------------------------------
	// CoreAudio continuous play test
	// (c) 2014 by Arthur Langereis (@zenmumbler)
	// created: 2014-12-07
	//
	// As part of my efforts for stardazed and to create a Mac OS X version of
	// Handmade Hero.
	//
	// compile with:
	// clang++ -std=c++11 -stdlib=libc++ -framework AudioToolbox catest.cpp -o catest

	/// <summary>
	/// Implementation of Mersenne Twister random number generator
	/// </summary>
	public class MersennePrimeRandom
	{
	private readonly uint[] _matrix = new uint[624];
	private int _index = 0;

	public MersennePrimeRandom() : this((uint)(0xFFFFFFFF & DateTime.Now.Ticks)) { }