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SpaceCat
Member (Posts: 138)

The Forbidden Caves - A LUA RPG
02 Oct 2012 02:08:34 pm

I am working on a text based RPG called The Forbidden Caves.
I will post my progress here.

Here is the nonfunctional code (the interpereter is broken):

Code:







local c_stage = 0


local c_branch = 0





function scrClear ()


 io.write("\27[2J")


end





function rpg (stage,branch)


 if stage == 0 then print "You are in a small abandoned village. There is a tavern to the WEST, a cave to the NORTH and a   sign to the EAST." end


 if stage == 1 and branch == 1 then print "You enter the cave and walk until it gets too dark too see. You stumble on until you just can't go any further. You turn back." end


 if stage == 1 and branch == 2 then print [[The sign reads: "Welcome to the town of Pleasantville! The happy town of..." The population has been scratched out. Someone has carved into the sign: "run, while you can still can! remember, it can always see you..."]] end


 interp()


end





function interp ()


 c_input = io.read()


 if not string.find(c_input, "GO") == nil then


  arg = string.sub(c_input, 3)


  if arg == "NORTH" then c_branch = 1 end


  if arg == "EAST" then c_branch = 2 end


  if arg == "SOUTH" then c_branch = 3 end


  if arg == "WEST" then c_branch = 4 end


 end


 c_stage = 1


 rpg ()


end





scrClear()


print([[_________          _______ ]])                                                      


print([[\__   __/|\     /|(  ____ \]])                                                      


print([[   ) (   | )   ( || (    \/]])                                                      


print([[   | |   | (___) || (__    ]])                                                      


print([[   | |   |  ___  ||  __)   ]])                                                      


print([[   | |   | (   ) || (      ]])                                                      


print([[   | |   | )   ( || (____/\]])                                                      


print([[   )_(   |/     \|(_______/]])                                                      


print()                                                                                 


print([[ _______  _______  _______  ______  _________ ______   ______   _______  _       ]])


print([[(  ____ \(  ___  )(  ____ )(  ___ \ \__   __/(  __  \ (  __  \ (  ____ \( (    /|]])


print([[| (    \/| (   ) || (    )|| (   ) )   ) (   | (  \  )| (  \  )| (    \/|  \  ( |]])


print([[| (__    | |   | || (____)|| (__/ /    | |   | |   ) || |   ) || (__    |   \ | |]])


print([[|  __)   | |   | ||     __)|  __ (     | |   | |   | || |   | ||  __)   | (\ \) |]])


print([[| (      | |   | || (\ (   | (  \ \    | |   | |   ) || |   ) || (      | | \   |]])


print([[| )      | (___) || ) \ \__| )___) )___) (___| (__/  )| (__/  )| (____/\| )  \  |]])


print([[|/       (_______)|/   \__/|/ \___/ \_______/(______/ (______/ (_______/|/    )_)]])


print()                                                                                 


print([[ _______  _______           _______  _______ ]])                                    


print([[(  ____ \(  ___  )|\     /|(  ____ \(  ____ \]])                                    


print([[| (    \/| (   ) || )   ( || (    \/| (    \/]])                                    


print([[| |      | (___) || |   | || (__    | (_____ ]])                                    


print([[| |      |  ___  |( (   ) )|  __)   (_____  )]])                                    


print([[| |      | (   ) | \ \_/ / | (            ) |]])                                    


print([[| (____/\| )   ( |  \   /  | (____/\/\____) |]])                                    


print([[(_______/|/     \|   \_/   (_______/\_______)]])    


io.read()


exiting = false


repeat


 scrClear()


 save = io.open("SAV.E", "RW")


 print("TFC MENU")


 print("-------------")


 print("NEW GAME")


 if not save == null then print("LOAD GAME") else print("NO SAVED GAME") end


 print("DELETE SAVE")


 print("QUIT")


 print("-------------")


 io.write("OPT: ")


 choice = io.read()





 if choice == "NEW" then


  c_stage = 0


  c_branch = 0


  clear()


  rpg(c_stage,c_branch)


 end





 if choice == "QUIT" then exiting = true end


until exiting == true

KermMartian
Site Admin (Posts: 64080)

03 Oct 2012 08:39:31 am

Well, I think you're getting caught up in a 0-indexing/1-indexing confusion. In Lua, strings are indexed from 1, not 0, so consider the command "GO NORTH":
Code:

GO NORTH


12345678

You want to take the substring from 4, not 3. Smile

SpaceCat
Member (Posts: 138)

03 Oct 2012 08:40:27 am

Oh. That's interesting...

KermMartian
Site Admin (Posts: 64080)

03 Oct 2012 08:42:15 am

pcb_master wrote:

Oh. That's interesting...

I only found it by Googling "lua string sub" and reading through a paragraph of the first result. Wink

Yup, Lua indexes everything from 1 instead of 0, just like Matlab.

Edit: You have another potential problem as well, I think:

Code:

if not string.find(c_input, "GO") == nil then

That will apply the not and then the ==, which may not work in all cases. You may want this instead:
Code:

if string.find(c_input,"GO") ~= nil then

Or even faster:
Code:

if string.sub(c_input,1,2) == "GO" then

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