initial setup

.gitignore

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+build/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.10)
+
+# Set the project name and specify the languages
+project(simworld LANGUAGES C)
+
+# Set compiler flags
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wformat=2 -Wshadow -Wwrite-strings -Wstrict-prototypes")
+
+# Specify the source directory
+set(SOURCE_DIR ${CMAKE_SOURCE_DIR}/src)
+
+# Create a list of source files
+file(GLOB_RECURSE SOURCES ${SOURCE_DIR}/*.c)
+
+# Create the executable from the source files
+add_executable(${PROJECT_NAME} ${SOURCES})
+
+# Dependencies
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(LUA REQUIRED lua)
+
+target_link_libraries(${PROJECT_NAME} ${LUA_LIBRARIES})
+target_include_directories(${PROJECT_NAME} PRIVATE ${LUA_INCLUDE_DIRS})
+
+# `#define DEBUG` if `cmake -DCMAKE_BUILD_TYPE=debug`
+if(CMAKE_BUILD_TYPE STREQUAL "debug")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g")
+    target_compile_definitions(${PROJECT_NAME} PRIVATE BUILD_DEBUG)
+else()
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2")
+    target_compile_definitions(${PROJECT_NAME} PRIVATE BUILD_RELEASE)
+endif()

README.gmi

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+# Simworld Lite
+Simworld is a zero-player game in which players create simulated environments and ecosystems that run with no user intervention. The environments and the creatures that inhabit them are all completely defined through user-created mods. Though there's no real goal to the game, a good challenge is to create ecosystems that are self-sustaining and can thus run indefinitely.
+
+Note: I'm not galaxy-brained enough to do the full idea at the moment, so this is the "lite" version, contianing only the bare minimum to make the idea work.
+
+## Build from Source
+### Dependencies
+* CMake
+* Lua 5.4
+
+### Building
+```
+mkdir -p build/
+cd build/
+cmake ..
+make
+./simworld
+```

build.sh

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+#!/bin/sh
+
+set -e
+
+run_exe=0
+
+## Ensure first argument is correct
+if [ "$1" = "debug" ]; then
+    debug=1
+elif [ "$1" = "release" ]; then
+    debug=0
+else
+    echo "Run as '$0 debug' or '$0 release'"
+    exit 1
+fi
+
+## Ensure second argument is correct
+if [ "$2" = "run" ]; then
+    run_exe=1
+fi
+
+## Ensure its run in the right place
+if ! [ -f "CMakeLists.txt" ]; then
+    echo "Run in the project root"
+    exit 1
+fi
+
+mkdir -p build
+cd build || exit
+
+if [ ${debug} -eq 1 ]; then
+    echo debug
+    cmake -DCMAKE_BUILD_TYPE=debug ..
+else
+    echo release
+    cmake -DCMAKE_BUILD_TYPE=release ..
+fi
+
+make
+
+if [ ${run_exe} -eq 1 ]; then
+    ./simworld
+fi
+
+cd ..

src/main.c

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+// main.c
+
+#include <stdio.h>
+
+int main(void) {
+    puts("Hello, world!");
+    return 0;
+}