yes, but its difficulty depends on how extensive you want your combat and etc game aspects, if you can code (and how well) or not (you don't have to be able to code to create a combat system, but being able to code makes it much easier obviously), and etc.
for combat:
Pixie's Simple Combat Library
Pertex' Combat Library
HK's Combat code (based upon Pertex' Combat code structure): see the 'HK noob help me thread', last few pages, find my "veni vidi veci" post, lol)
for equipment:
Chase's Wearables (equipment) Library
Pixie's Simple Combat Library
Pertex' Combat Library
for spells~magic:
Pixie's Simple Combat Library
for items (storage and etc):
Sora's Stackable Library
Portable Lantern~Light Library by ??? (too lazy to look up ~ just going off of memory)
for grid~map generation:
Jay's (Jaynabonne's) random map-grid generation library
for exploration (no Exits, 'explore' and 'travel' commands):
HK's 'exploration' and 'travel' code
dialogue~conversation:
there's a few guides~libraries of~for dialogue~conversations (too many to list them all, and too lazy to get their links too, lol)
character creation:
http://docs.textadventures.co.uk/quest/ ... ation.htmlviewtopic.php?f=18&t=5492viewtopic.php?f=18&t=4988 (use for ideas~example, but it's bad code design, as I didn't understand recursion at the time I did this, my functions need to be replaced with: for, foreach,while, do-while, etc loops, as recursion, functions calling themselves and~or lots of nested functions, is usually bad to use)
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and etc etc etc RPG stuff ... it's been awhile since I listed off the resources~links, so I'm probably forgetting a lot of resources~links.
if you need help with finding any of these, let me know and I can give you the links for them. Too many to put into this post (too lazy to do so)
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P.S.
you might want to hook up with Neonayon, as she can probably help you a bit with getting started, as she too is trying to put combat into her game.