Scene Managing

Lately, I was looking at the code for a game that used constants and a global variable to keep track of scene changes, something I've done in at least one of my WIPs, too. It got me thinking that it'd be nice to have some code available for spitting scene stuff out so authors don't have to reinvent the wheel each time.

A room might check scene settings like this:

	enumerate start = 1 step * 2
	{
	START, JOURNEY, EXPLODED_DYNAMITE, END
	}
	room start_room "Start Room"
	{
	long_desc
	{
	if Seen(EXPLODED_DYNAMITE)
	"This place is in shambles now that you exploded all that dynamite!"
	else
	"Wow, this place is pristine."
	}
	}

view raw example scene room hosted with ❤ by GitHub

And here is the actual scene routines and code:

	! example linear game scenes
	!enumerate start = 1
	!{
	! FIRST_SCENE, SECOND_SCENE, THIRD_SCENE, FINALE
	!}
	! example unordered scene game (must also #set UNORDERED_SCENES)
	!enumerate start = 1 step * 2
	!{
	! START, PATH1, PATH2, PATH3, PATH4, END
	!}
	#set SCENE_MANAGER
	#set UNORDERED_SCENES
	#ifset SCENE_MANAGER
	#ifset UNORDERED_SCENES
	global current_scene
	#endif
	global scene
	routine Seen(obj) ! returns true if the given scene has been "seen" yet
	{
	#ifset UNORDERED_SCENES
	if (scene & obj)
	return true
	#else
	if scene => obj
	return true
	#endif
	}
	routine CurrentScene ! returns the value of current_scene or the scene variables
	{
	#ifset UNORDERED_SCENES
	return current_scene
	#else
	return scene
	#endif
	}
	routine SetScene(obj) ! changes the scene (or current_scene if using UNORDERED_SCENES) variable to obj
	{
	#ifset UNORDERED_SCENES
	current_scene = obj
	scene = scene | obj
	#else
	scene = obj
	#endif
	}
	#endif ! ifset SCENE_MANAGER

view raw Hugo Scene Manager hosted with ❤ by GitHub

Anyhow, not sure how useful this will be to most people so I probably won't add it to Roodylib, but there it is!