Save config upon loading

Ensure that initial loading of the config saves the values back to the
config file, in order to account for fallback values.

CMakeLists.txt

@@ -33,8 +33,3 @@ if (WIN32)
 		"${PROJECT_SOURCE_DIR}/dependencies/SDL2/lib/${PROJECT_ARCH}/SDL2.dll"      # <--this is in-file
 		$<TARGET_FILE_DIR:izanagi>)                 # <--this is out-file path
 endif ()
-
-add_custom_command(TARGET izanagi POST_BUILD
-	COMMAND ${CMAKE_COMMAND} -E copy_if_different  # which executes "cmake - E copy_if_different..."
-	"${PROJECT_SOURCE_DIR}/assets/config.ini"      # <--this is in-file
-	$<TARGET_FILE_DIR:izanagi>)                 # <--this is out-file path

assets/config.ini → docs/reference/files/config.ini

@@ -1,21 +1,21 @@
-[Video]
-Width=640
-Height=480
-
-[Controls.0.Keyboard]
-Right=Right
-Down=Down
-Left=Left
-Up=Up
-Affirm=Return
-Negate=Backspace
-Action0=A
-Action1=S
-Action2=D
-Action3=F
-Action4=Z
-Action5=X
-Action6=C
-Action7=V
-Action8=W
-Action9=E
+[Video]
+Width=640
+Height=480
+
+[Controls.0.Keyboard]
+Right=Right
+Down=Down
+Left=Left
+Up=Up
+Affirm=Return
+Negate=Backspace
+Action0=A
+Action1=S
+Action2=D
+Action3=F
+Action4=Z
+Action5=X
+Action6=C
+Action7=V
+Action8=W
+Action9=E

src/packages/game/main.c

@@ -72,6 +72,24 @@ static void IZ_GetConfigPath(char* config_path) {
 	strcat_s(config_path, 128, "config.ini");
 }
 
+static void IZ_SaveConfig(IZ_Config* config) {
+	static char config_path[128];
+	IZ_GetConfigPath(config_path);
+	FILE* fp;
+	fopen_s(&fp, config_path, "w");
+	fprintf_s(fp, "[Video]\n");
+	fprintf_s(fp, "Width=%u\n", config->video.width);
+	fprintf_s(fp, "Height=%u\n", config->video.height);
+	fprintf_s(fp, "\n");
+
+	for (unsigned int p = 0; p < PLAYERS; p += 1) {
+		fprintf_s(fp, "[Controls.%u.Keyboard]\n", p);
+		for (unsigned int i = 0; i < CONTROLS; i += 1) {
+			fprintf_s(fp, "%s=%s\n", ACTION_NAMES[i], SDL_GetKeyName(config->controls[p].keyboard[i]));
+		}
+	}
+}
+
 static void IZ_LoadConfig(IZ_Config* config) {
 	static char config_path[128];
 	IZ_GetConfigPath(config_path);
@@ -90,6 +108,7 @@ int main(int argc, char* args[]) {
 	SDL_Surface* screen_surface = NULL;
 	IZ_Config config;
 	IZ_LoadConfig(&config);
+	IZ_SaveConfig(&config);
 
 	if (SDL_Init(
 		SDL_INIT_VIDEO