From: Eric S. Raymond Date: Sun, 8 Oct 2006 06:19:28 +0000 (+0000) Subject: Refactored lexical analyzer into a scanner class. X-Git-Tag: 2.0~126 X-Git-Url: https://jxself.org/git/?a=commitdiff_plain;h=9cb2b7b1f79edde7e927a54b32c33d64973b7c67;p=super-star-trek.git Refactored lexical analyzer into a scanner class. This will make it easier to replace the parser, when we need to do that. --- diff --git a/src/sst.py b/src/sst.py index 24bc9a8..a1c08bb 100644 --- a/src/sst.py +++ b/src/sst.py @@ -1109,18 +1109,18 @@ def doshield(shraise): if shraise: action = "SHUP" else: - key = scan() + key = scanner.next() if key == IHALPHA: - if isit("transfer"): + if scanner.sees("transfer"): action = "NRG" else: - chew() + scanner.chew() if damaged(DSHIELD): prout(_("Shields damaged and down.")) return - if isit("up"): + if scanner.sees("up"): action = "SHUP" - elif isit("down"): + elif scanner.sees("down"): action = "SHDN" if action=="NONE": proutn(_("Do you wish to change shield energy? ")) @@ -1135,14 +1135,14 @@ def doshield(shraise): if ja() == True: action = "SHDN" else: - chew() + scanner.chew() return else: proutn(_("Shields are down. Do you want them up? ")) if ja() == True: action = "SHUP" else: - chew() + scanner.chew() return if action == "SHUP": # raise shields if game.shldup: @@ -1170,24 +1170,24 @@ def doshield(shraise): game.ididit = True return elif action == "NRG": - while scan() != IHREAL: - chew() + while scanner.next() != IHREAL: + scanner.chew() proutn(_("Energy to transfer to shields- ")) - chew() - if aaitem == 0: + scanner.chew() + if scanner.real == 0: return - if aaitem > game.energy: + if scanner.real > game.energy: prout(_("Insufficient ship energy.")) return game.ididit = True - if game.shield+aaitem >= game.inshld: + if game.shield+scanner.real >= game.inshld: prout(_("Shield energy maximized.")) - if game.shield+aaitem > game.inshld: + if game.shield+scanner.real > game.inshld: prout(_("Excess energy requested returned to ship energy")) game.energy -= game.inshld-game.shield game.shield = game.inshld return - if aaitem < 0.0 and game.energy-aaitem > game.inenrg: + if scanner.real < 0.0 and game.energy-scanner.real > game.inenrg: # Prevent shield drain loophole skip(1) prout(_("Engineering to bridge--")) @@ -1195,18 +1195,18 @@ def doshield(shraise): prout(_(" I can't drain the shields.")) game.ididit = False return - if game.shield+aaitem < 0: + if game.shield+scanner.real < 0: prout(_("All shield energy transferred to ship.")) game.energy += game.shield game.shield = 0.0 return proutn(_("Scotty- \"")) - if aaitem > 0: + if scanner.real > 0: prout(_("Transferring energy to shields.\"")) else: prout(_("Draining energy from shields.\"")) - game.shield += aaitem - game.energy -= aaitem + game.shield += scanner.real + game.energy -= scanner.real return def randdevice(): @@ -1787,7 +1787,7 @@ def targetcheck(w): prout(_("Spock- \"Bridge to sickbay. Dr. McCoy,")) prout(_(" I recommend an immediate review of")) prout(_(" the Captain's psychological profile.\"")) - chew() + scanner.chew() return None return 1.90985932*math.atan2(deltx, delty) @@ -1797,41 +1797,41 @@ def photon(): game.ididit = False if damaged(DPHOTON): prout(_("Photon tubes damaged.")) - chew() + scanner.chew() return if game.torps == 0: prout(_("No torpedoes left.")) - chew() + scanner.chew() return - key = scan() + key = scanner.next() while True: if key == IHALPHA: huh() return elif key == IHEOL: prout(_("%d torpedoes left.") % game.torps) - chew() + scanner.chew() proutn(_("Number of torpedoes to fire- ")) - key = scan() - else: # key == IHREAL { - n = int(round(aaitem + 0.5)) + key = scanner.next() + else: # key == IHREAL + n = scanner.int() if n <= 0: # abort command - chew() + scanner.chew() return if n > MAXBURST: - chew() + scanner.chew() prout(_("Maximum of %d torpedoes per burst.") % MAXBURST) key = IHEOL return if n <= game.torps: break - chew() + scanner.chew() key = IHEOL targ = [] for i in range(MAXBURST): targ.append(coord()) for i in range(n): - key = scan() + key = scanner.next() if i==0 and key == IHEOL: break; # we will try prompting if i==1 and key == IHEOL: @@ -1844,31 +1844,31 @@ def photon(): if key != IHREAL: huh() return - targ[i].x = aaitem - key = scan() + targ[i].x = scanner.real + key = scanner.next() if key != IHREAL: huh() return - targ[i].y = aaitem + targ[i].y = scanner.real course[i] = targetcheck(targ[i]) if course[i] == None: return - chew() + scanner.chew() if i == 1 and key == IHEOL: # prompt for each one for i in range(n): proutn(_("Target sector for torpedo number %d- ") % (i+1)) - key = scan() + key = scanner.next() if key != IHREAL: huh() return - targ[i].x = int(aaitem-0.5) - key = scan() + targ[i].x = int(scanner.real-0.5) + key = scanner.next() if key != IHREAL: huh() return - targ[i].y = int(aaitem-0.5) - chew() + targ[i].y = int(scanner.real-0.5) + scanner.chew() course[i] = targetcheck(targ[i]) if course[i] == None: return @@ -2004,46 +2004,46 @@ def phasers(): itarg = False if game.condition == "docked": prout(_("Phasers can't be fired through base shields.")) - chew() + scanner.chew() return if damaged(DPHASER): prout(_("Phaser control damaged.")) - chew() + scanner.chew() return if game.shldup: if damaged(DSHCTRL): prout(_("High speed shield control damaged.")) - chew() + scanner.chew() return if game.energy <= 200.0: prout(_("Insufficient energy to activate high-speed shield control.")) - chew() + scanner.chew() return prout(_("Weapons Officer Sulu- \"High-speed shield control enabled, sir.\"")) ifast = True # Original code so convoluted, I re-did it all # (That was Tom Almy talking about the C code, I think -- ESR) while automode=="NOTSET": - key=scan() + key=scanner.next() if key == IHALPHA: - if isit("manual"): + if scanner.sees("manual"): if len(game.enemies)==0: prout(_("There is no enemy present to select.")) - chew() + scanner.chew() key = IHEOL automode="AUTOMATIC" else: automode = "MANUAL" - key = scan() - elif isit("automatic"): + key = scanner.next() + elif scanner.sees("automatic"): if (not itarg) and len(game.enemies) != 0: automode = "FORCEMAN" else: if len(game.enemies)==0: prout(_("Energy will be expended into space.")) automode = "AUTOMATIC" - key = scan() - elif isit("no"): + key = scanner.next() + elif scanner.sees("no"): no = True else: huh() @@ -2065,30 +2065,30 @@ def phasers(): automode = "FORCEMAN" else: proutn(_("Manual or automatic? ")) - chew() + scanner.chew() avail = game.energy if ifast: avail -= 200.0 if automode == "AUTOMATIC": - if key == IHALPHA and isit("no"): + if key == IHALPHA and scanner.sees("no"): no = True - key = scan() + key = scanner.next() if key != IHREAL and len(game.enemies) != 0: prout(_("Phasers locked on target. Energy available: %.2f")%avail) irec=0 while True: - chew() + scanner.chew() if not kz: for i in range(len(game.enemies)): irec += math.fabs(game.enemies[i].kpower)/(PHASEFAC*math.pow(0.90,game.enemies[i].kdist))*randreal(1.01, 1.06) + 1.0 kz=1 proutn(_("%d units required. ") % irec) - chew() + scanner.chew() proutn(_("Units to fire= ")) - key = scan() + key = scanner.next() if key!=IHREAL: return - rpow = aaitem + rpow = scanner.real if rpow > avail: proutn(_("Energy available= %.2f") % avail) skip(1) @@ -2097,16 +2097,16 @@ def phasers(): break if rpow<=0: # chicken out - chew() + scanner.chew() return - key=scan() - if key == IHALPHA and isit("no"): + key=scanner.next() + if key == IHALPHA and scanner.sees("no"): no = True if ifast: game.energy -= 200; # Go and do it! if checkshctrl(rpow): return - chew() + scanner.chew() game.energy -= rpow extra = rpow if len(game.enemies): @@ -2138,7 +2138,7 @@ def phasers(): else: prout(_("%d expended on empty space.") % int(extra)) elif automode == "FORCEMAN": - chew() + scanner.chew() key = IHEOL if damaged(DCOMPTR): prout(_("Battle computer damaged, manual fire only.")) @@ -2164,13 +2164,13 @@ def phasers(): not game.sector.distance(aim)<2**0.5 and ienm in (IHC, IHS): cramen(ienm) prout(_(" can't be located without short range scan.")) - chew() + scanner.chew() key = IHEOL hits[k] = 0; # prevent overflow -- thanks to Alexei Voitenko k += 1 continue if key == IHEOL: - chew() + scanner.chew() if itarg and k > kz: irec=(abs(game.enemies[k].kpower)/(PHASEFAC*math.pow(0.9,game.enemies[k].kdist))) * randreal(1.01, 1.06) + 1.0 kz = k @@ -2183,10 +2183,10 @@ def phasers(): proutn(_("units to fire at ")) crmena(False, ienm, "sector", aim) proutn("- ") - key = scan() - if key == IHALPHA and isit("no"): + key = scanner.next() + if key == IHALPHA and scanner.sees("no"): no = True - key = scan() + key = scanner.next() continue if key == IHALPHA: huh() @@ -2195,27 +2195,27 @@ def phasers(): if k==1: # Let me say I'm baffled by this msgflag = True continue - if aaitem < 0: + if scanner.real < 0: # abort out - chew() + scanner.chew() return - hits[k] = aaitem - rpow += aaitem + hits[k] = scanner.real + rpow += scanner.real # If total requested is too much, inform and start over if rpow > avail: prout(_("Available energy exceeded -- try again.")) - chew() + scanner.chew() return - key = scan(); # scan for next value + key = scanner.next(); # scan for next value k += 1 if rpow == 0.0: # zero energy -- abort - chew() + scanner.chew() return - if key == IHALPHA and isit("no"): + if key == IHALPHA and scanner.sees("no"): no = True game.energy -= rpow - chew() + scanner.chew() if ifast: game.energy -= 200.0 if checkshctrl(rpow): @@ -2695,15 +2695,15 @@ def wait(): # wait on events game.ididit = False while True: - key = scan() + key = scanner.next() if key != IHEOL: break proutn(_("How long? ")) - chew() + scanner.chew() if key != IHREAL: huh() return - origTime = delay = aaitem + origTime = delay = scanner.real if delay <= 0.0: return if delay >= game.state.remtime or len(game.enemies) != 0: @@ -3008,7 +3008,7 @@ def supernova(induced, w=None): def selfdestruct(): # self-destruct maneuver # Finish with a BANG! - chew() + scanner.chew() if damaged(DCOMPTR): prout(_("Computer damaged; cannot execute destruct sequence.")) return @@ -3026,9 +3026,9 @@ def selfdestruct(): skip(1) prout(_("SELF-DESTRUCT-SEQUENCE-WILL-BE-ABORTED")) skip(1) - scan() - chew() - if game.passwd != citem: + scanner.next() + scanner.chew() + if game.passwd != scanner.token: prouts(_("PASSWORD-REJECTED;")) skip(1) prouts(_("CONTINUITY-EFFECTED")) @@ -3146,7 +3146,7 @@ def finish(ifin): prout(_("You cannot get a citation, so...")) else: proutn(_("Do you want your Commodore Emeritus Citation printed? ")) - chew() + scanner.chew() if ja() == True: igotit = True # Only grant long life if alive (original didn't!) @@ -3946,7 +3946,7 @@ def imove(novapush): def dock(verbose): # dock our ship at a starbase - chew() + scanner.chew() if game.condition == "docked" and verbose: prout(_("Already docked.")) return @@ -3993,7 +3993,7 @@ def getcourse(isprobe, akey): if game.landed and not isprobe: prout(_("Dummy! You can't leave standard orbit until you")) proutn(_("are back aboard the ship.")) - chew() + scanner.chew() return False while navmode == "unspecified": if damaged(DNAVSYS): @@ -4001,7 +4001,7 @@ def getcourse(isprobe, akey): prout(_("Computer damaged; manual navigation only")) else: prout(_("Computer damaged; manual movement only")) - chew() + scanner.chew() navmode = "manual" key = IHEOL break @@ -4010,23 +4010,23 @@ def getcourse(isprobe, akey): key = akey akey = -1 else: - key = scan() + key = scanner.next() if key == IHEOL: proutn(_("Manual or automatic- ")) iprompt = True - chew() + scanner.chew() elif key == IHALPHA: - if isit("manual"): + if scanner.sees("manual"): navmode = "manual" - key = scan() + key = scanner.next() break - elif isit("automatic"): + elif scanner.sees("automatic"): navmode = "automatic" - key = scan() + key = scanner.next() break else: huh() - chew() + scanner.chew() return False else: # numeric if isprobe: @@ -4041,27 +4041,27 @@ def getcourse(isprobe, akey): proutn(_("Target quadrant or quadrant§or- ")) else: proutn(_("Destination sector or quadrant§or- ")) - chew() + scanner.chew() iprompt = True - key = scan() + key = scanner.next() if key != IHREAL: huh() return False - xi = int(round(aaitem))-1 - key = scan() + xi = int(round(scanner.real))-1 + key = scanner.next() if key != IHREAL: huh() return False - xj = int(round(aaitem))-1 - key = scan() + xj = int(round(scanner.real))-1 + key = scanner.next() if key == IHREAL: # both quadrant and sector specified - xk = int(round(aaitem))-1 - key = scan() + xk = int(round(scanner.real))-1 + key = scanner.next() if key != IHREAL: huh() return False - xl = int(round(aaitem))-1 + xl = int(round(scanner.real))-1 dquad.x = xi dquad.y = xj dsect.y = xk @@ -4094,22 +4094,22 @@ def getcourse(isprobe, akey): else: # manual while key == IHEOL: proutn(_("X and Y displacements- ")) - chew() + scanner.chew() iprompt = True - key = scan() + key = scanner.next() itemp = "verbose" if key != IHREAL: huh() return False - deltax = aaitem - key = scan() + deltax = scanner.real + key = scanner.next() if key != IHREAL: huh() return False - deltay = aaitem + deltay = scanner.real # Check for zero movement if deltax == 0 and deltay == 0: - chew() + scanner.chew() return False if itemp == "verbose" and not isprobe: skip(1) @@ -4119,14 +4119,14 @@ def getcourse(isprobe, akey): game.direc = math.atan2(deltax, deltay)*1.90985932 if game.direc < 0.0: game.direc += 12.0 - chew() + scanner.chew() return True def impulse(): # move under impulse power game.ididit = False if damaged(DIMPULS): - chew() + scanner.chew() skip(1) prout(_("Engineer Scott- \"The impulse engines are damaged, Sir.\"")) return @@ -4147,7 +4147,7 @@ def impulse(): prout(_(" quadrants.\"")) else: prout(_("quadrant. They are, therefore, useless.\"")) - chew() + scanner.chew() return # Make sure enough time is left for the trip game.optime = game.dist/0.095 @@ -4175,12 +4175,12 @@ def warp(timewarp): if not timewarp: # Not WARPX entry game.ididit = False if game.damage[DWARPEN] > 10.0: - chew() + scanner.chew() skip(1) prout(_("Engineer Scott- \"The impulse engines are damaged, Sir.\"")) return if damaged(DWARPEN) and game.warpfac > 4.0: - chew() + scanner.chew() skip(1) prout(_("Engineer Scott- \"Sorry, Captain. Until this damage")) prout(_(" is repaired, I can only give you warp 4.\"")) @@ -4287,30 +4287,30 @@ def warp(timewarp): def setwarp(): # change the warp factor while True: - key=scan() + key=scanner.next() if key != IHEOL: break - chew() + scanner.chew() proutn(_("Warp factor- ")) - chew() + scanner.chew() if key != IHREAL: huh() return if game.damage[DWARPEN] > 10.0: prout(_("Warp engines inoperative.")) return - if damaged(DWARPEN) and aaitem > 4.0: + if damaged(DWARPEN) and scanner.real > 4.0: prout(_("Engineer Scott- \"I'm doing my best, Captain,")) prout(_(" but right now we can only go warp 4.\"")) return - if aaitem > 10.0: + if scanner.real > 10.0: prout(_("Helmsman Sulu- \"Our top speed is warp 10, Captain.\"")) return - if aaitem < 1.0: + if scanner.real < 1.0: prout(_("Helmsman Sulu- \"We can't go below warp 1, Captain.\"")) return oldfac = game.warpfac - game.warpfac = aaitem + game.warpfac = scanner.real game.wfacsq=game.warpfac*game.warpfac if game.warpfac <= oldfac or game.warpfac <= 6.0: prout(_("Helmsman Sulu- \"Warp factor %d, Captain.\"") % @@ -4327,7 +4327,7 @@ def setwarp(): def atover(igrab): # cope with being tossed out of quadrant by supernova or yanked by beam - chew() + scanner.chew() # is captain on planet? if game.landed: if damaged(DTRANSP): @@ -4464,7 +4464,7 @@ def probe(): # launch deep-space probe # New code to launch a deep space probe if game.nprobes == 0: - chew() + scanner.chew() skip(1) if game.ship == IHE: prout(_("Engineer Scott- \"We have no more deep space probes, Sir.\"")) @@ -4472,12 +4472,12 @@ def probe(): prout(_("Ye Faerie Queene has no deep space probes.")) return if damaged(DDSP): - chew() + scanner.chew() skip(1) prout(_("Engineer Scott- \"The probe launcher is damaged, Sir.\"")) return if is_scheduled(FDSPROB): - chew() + scanner.chew() skip(1) if damaged(DRADIO) and game.condition != "docked": prout(_("Spock- \"Records show the previous probe has not yet")) @@ -4485,7 +4485,7 @@ def probe(): else: prout(_("Uhura- \"The previous probe is still reporting data, Sir.\"")) return - key = scan() + key = scanner.next() if key == IHEOL: # slow mode, so let Kirk know how many probes there are left if game.nprobes == 1: @@ -4496,9 +4496,9 @@ def probe(): if ja() == False: return game.isarmed = False - if key == IHALPHA and citem == "armed": + if key == IHALPHA and scanner.token == "armed": game.isarmed = True - key = scan() + key = scanner.next() elif key == IHEOL: proutn(_("Arm NOVAMAX warhead? ")) game.isarmed = ja() @@ -4544,7 +4544,7 @@ def mayday(): # yell for help from nearest starbase # There's more than one way to move in this game! line = 0 - chew() + scanner.chew() # Test for conditions which prevent calling for help if game.condition == "docked": prout(_("Lt. Uhura- \"But Captain, we're already docked.\"")) @@ -4642,7 +4642,7 @@ def mayday(): def abandon(): # abandon ship - chew() + scanner.chew() if game.condition=="docked": if game.ship!=IHE: prout(_("You cannot abandon Ye Faerie Queene.")) @@ -4752,7 +4752,7 @@ def survey(): # report on (uninhabited) planets in the galaxy iknow = False skip(1) - chew() + scanner.chew() prout(_("Spock- \"Planet report follows, Captain.\"")) skip(1) for i in range(game.inplan): @@ -4779,7 +4779,7 @@ def survey(): def orbit(): # enter standard orbit skip(1) - chew() + scanner.chew() if game.inorbit: prout(_("Already in standard orbit.")) return @@ -4831,7 +4831,7 @@ def sensor(): def beam(): # use the transporter nrgneed = 0 - chew() + scanner.chew() skip(1) if damaged(DTRANSP): prout(_("Transporter damaged.")) @@ -4858,7 +4858,7 @@ def beam(): prout(_(" exploring a planet with no dilithium crystals.")) proutn(_(" Are you sure this is wise?\" ")) if ja() == False: - chew() + scanner.chew() return if not (game.options & OPTION_PLAIN): nrgneed = 50 * game.skill + game.height / 100.0 @@ -4874,14 +4874,14 @@ def beam(): prout(_(" Although the Galileo shuttle craft may still be on a surface.")) proutn(_(" Are you sure this is wise?\" ")) if ja() == False: - chew() + scanner.chew() return if game.landed: # Coming from planet if game.iplnet.known=="shuttle_down": proutn(_("Spock- \"Wouldn't you rather take the Galileo?\" ")) if ja() == True: - chew() + scanner.chew() return prout(_("Your crew hides the Galileo to prevent capture by aliens.")) prout(_("Landing party assembled, ready to beam up.")) @@ -4923,7 +4923,7 @@ def beam(): def mine(): # strip-mine a world for dilithium skip(1) - chew() + scanner.chew() if not game.landed: prout(_("Mining party not on planet.")) return @@ -4953,7 +4953,7 @@ def usecrystals(): # use dilithium crystals game.ididit = False skip(1) - chew() + scanner.chew() if not game.icrystl: prout(_("No dilithium crystals available.")) return @@ -4966,7 +4966,7 @@ def usecrystals(): prout(_(" system may risk a severe explosion.")) proutn(_(" Are you sure this is wise?\" ")) if ja() == False: - chew() + scanner.chew() return skip(1) prout(_("Engineering Officer Scott- \"(GULP) Aye Sir.")) @@ -4997,7 +4997,7 @@ def usecrystals(): def shuttle(): # use shuttlecraft for planetary jaunt - chew() + scanner.chew() skip(1) if damaged(DSHUTTL): if game.damage[DSHUTTL] == -1.0: @@ -5101,7 +5101,7 @@ def deathray(): # use the big zapper game.ididit = False skip(1) - chew() + scanner.chew() if game.ship != IHE: prout(_("Ye Faerie Queene has no death ray.")) return @@ -5222,7 +5222,7 @@ def attackreport(curt): def report(): # report on general game status - chew() + scanner.chew() s1 = "" and game.thawed and _("thawed ") s2 = {1:"short", 2:"medium", 4:"long"}[game.length] s3 = (None, _("novice"). _("fair"), @@ -5324,7 +5324,7 @@ def lrscan(silent): def damagereport(): # damage report jdam = False - chew() + scanner.chew() for i in range(NDEVICES): if damaged(i): @@ -5350,7 +5350,7 @@ def rechart(): def chart(): # display the star chart - chew() + scanner.chew() if (game.options & OPTION_AUTOSCAN): lrscan(silent=True) if not damaged(DRADIO): @@ -5462,11 +5462,11 @@ def status(req=0): def request(): requests = ("da","co","po","ls","wa","en","to","sh","kl","sy", "ti") - while scan() == IHEOL: + while scanner.next() == IHEOL: proutn(_("Information desired? ")) - chew() - if citem in requests: - status(requests.index(citem)) + scanner.chew() + if scanner.token in requests: + status(requests.index(scanner.token)) else: prout(_("UNRECOGNIZED REQUEST. Legal requests are:")) prout((" date, condition, position, lsupport, warpfactor,")) @@ -5506,24 +5506,24 @@ def eta(): prout(_("COMPUTER DAMAGED, USE A POCKET CALCULATOR.")) skip(1) return - if scan() != IHREAL: + if scanner.next() != IHREAL: prompt = True - chew() + scanner.chew() proutn(_("Destination quadrant and/or sector? ")) - if scan()!=IHREAL: + if scanner.next()!=IHREAL: huh() return - w1.y = int(aaitem-0.5) - if scan() != IHREAL: + w1.y = int(scanner.real-0.5) + if scanner.next() != IHREAL: huh() return - w1.x = int(aaitem-0.5) - if scan() == IHREAL: - w2.y = int(aaitem-0.5) - if scan() != IHREAL: + w1.x = int(scanner.real-0.5) + if scanner.next() == IHREAL: + w2.y = int(scanner.real-0.5) + if scanner.next() != IHREAL: huh() return - w2.x = int(aaitem-0.5) + w2.x = int(scanner.real-0.5) else: if game.quadrant.y>w1.x: w2.x = 0 @@ -5542,32 +5542,32 @@ def eta(): if prompt: prout(_("Answer \"no\" if you don't know the value:")) while True: - chew() + scanner.chew() proutn(_("Time or arrival date? ")) - if scan()==IHREAL: - ttime = aaitem + if scanner.next()==IHREAL: + ttime = scanner.real if ttime > game.state.date: ttime -= game.state.date # Actually a star date twarp=(math.floor(math.sqrt((10.0*game.dist)/ttime)*10.0)+1.0)/10.0 if ttime <= 1e-10 or twarp > 10: prout(_("We'll never make it, sir.")) - chew() + scanner.chew() return if twarp < 1.0: twarp = 1.0 break - chew() + scanner.chew() proutn(_("Warp factor? ")) - if scan()== IHREAL: + if scanner.next()== IHREAL: wfl = True - twarp = aaitem + twarp = scanner.real if twarp<1.0 or twarp > 10.0: huh() return break prout(_("Captain, certainly you can give me one of these.")) while True: - chew() + scanner.chew() ttime = (10.0*game.dist)/square(twarp) tpower = game.dist*twarp*twarp*twarp*(game.shldup+1) if tpower >= game.energy: @@ -5576,15 +5576,15 @@ def eta(): if not wfl: return proutn(_("New warp factor to try? ")) - if scan() == IHREAL: + if scanner.next() == IHREAL: wfl = True - twarp = aaitem + twarp = scanner.real if twarp<1.0 or twarp > 10.0: huh() return continue else: - chew() + scanner.chew() skip(1) return prout(_("But if you lower your shields,")) @@ -5609,14 +5609,14 @@ def eta(): (scheduled(FCDBAS) 10.0: huh() return else: - chew() + scanner.chew() skip(1) return @@ -5635,22 +5635,22 @@ def prelim(): def freeze(boss): # save game if boss: - citem = "emsave.trk" + scanner.token = "emsave.trk" else: - key = scan() + key = scanner.next() if key == IHEOL: proutn(_("File name: ")) - key = scan() + key = scanner.next() if key != IHALPHA: huh() return - chew() - if '.' not in citem: - citem += ".trk" + scanner.chew() + if '.' not in scanner.token: + scanner.token += ".trk" try: - fp = open(citem, "wb") + fp = open(scanner.token, "wb") except IOError: - prout(_("Can't freeze game as file %s") % citem) + prout(_("Can't freeze game as file %s") % scanner.token) return cPickle.dump(game, fp) fp.close() @@ -5658,20 +5658,20 @@ def freeze(boss): def thaw(): # retrieve saved game game.passwd[0] = '\0' - key = scan() + key = scanner.next() if key == IHEOL: proutn(_("File name: ")) - key = scan() + key = scanner.next() if key != IHALPHA: huh() return True - chew() - if '.' not in citem: - citem += ".trk" + scanner.chew() + if '.' not in scanner.token: + scanner.token += ".trk" try: - fp = open(citem, "rb") + fp = open(scanner.token, "rb") except IOError: - prout(_("Can't thaw game in %s") % citem) + prout(_("Can't thaw game in %s") % scanner.token) return game = cPickle.load(fp) fp.close() @@ -5748,11 +5748,11 @@ device = ( _("D. S. Probe"), \ ) -def setup(needprompt): +def setup(): # prepare to play, set up cosmos w = coord() # Decide how many of everything - if choose(needprompt): + if choose(): return # frozen game # Prepare the Enterprise game.alldone = game.gamewon = False @@ -5953,7 +5953,7 @@ def setup(needprompt): if game.neutz: # bad luck to start in a Romulan Neutral Zone attack(torps_ok=False) -def choose(needprompt): +def choose(): # choose your game type global thing while True: @@ -5961,26 +5961,26 @@ def choose(needprompt): game.thawed = False game.skill = SKILL_NONE game.length = 0 - if needprompt: # Can start with command line options + if not scanner.inqueue: # Can start with command line options proutn(_("Would you like a regular, tournament, or saved game? ")) - scan() - if len(citem)==0: # Try again + scanner.next() + if len(scanner.token)==0: # Try again continue - if isit("tournament"): - while scan() == IHEOL: + if scanner.sees("tournament"): + while scanner.next() == IHEOL: proutn(_("Type in tournament number-")) - if aaitem == 0: - chew() + if scanner.real == 0: + scanner.chew() continue # We don't want a blank entry - game.tourn = int(round(aaitem)) - random.seed(aaitem) + game.tourn = int(round(scanner.real)) + random.seed(scanner.real) if logfp: - logfp.write("# random.seed(%d)\n" % aaitem) + logfp.write("# random.seed(%d)\n" % scanner.real) break - if isit("saved") or isit("frozen"): + if scanner.sees("saved") or scanner.sees("frozen"): if thaw(): continue - chew() + scanner.chew() if game.passwd == None: continue if not game.alldone: @@ -5988,55 +5988,55 @@ def choose(needprompt): report() waitfor() return True - if isit("regular"): + if scanner.sees("regular"): break - proutn(_("What is \"%s\"?"), citem) - chew() + proutn(_("What is \"%s\"?"), scanner.token) + scanner.chew() while game.length==0 or game.skill==SKILL_NONE: - if scan() == IHALPHA: - if isit("short"): + if scanner.next() == IHALPHA: + if scanner.sees("short"): game.length = 1 - elif isit("medium"): + elif scanner.sees("medium"): game.length = 2 - elif isit("long"): + elif scanner.sees("long"): game.length = 4 - elif isit("novice"): + elif scanner.sees("novice"): game.skill = SKILL_NOVICE - elif isit("fair"): + elif scanner.sees("fair"): game.skill = SKILL_FAIR - elif isit("good"): + elif scanner.sees("good"): game.skill = SKILL_GOOD - elif isit("expert"): + elif scanner.sees("expert"): game.skill = SKILL_EXPERT - elif isit("emeritus"): + elif scanner.sees("emeritus"): game.skill = SKILL_EMERITUS else: proutn(_("What is \"")) - proutn(citem) + proutn(scanner.token) prout("\"?") else: - chew() + scanner.chew() if game.length==0: proutn(_("Would you like a Short, Medium, or Long game? ")) elif game.skill == SKILL_NONE: proutn(_("Are you a Novice, Fair, Good, Expert, or Emeritus player? ")) # Choose game options -- added by ESR for SST2K - if scan() != IHALPHA: - chew() + if scanner.next() != IHALPHA: + scanner.chew() proutn(_("Choose your game style (or just press enter): ")) - scan() - if isit("plain"): + scanner.next() + if scanner.sees("plain"): # Approximates the UT FORTRAN version. game.options &=~ (OPTION_THOLIAN | OPTION_PLANETS | OPTION_THINGY | OPTION_PROBE | OPTION_RAMMING | OPTION_MVBADDY | OPTION_BLKHOLE | OPTION_BASE | OPTION_WORLDS) game.options |= OPTION_PLAIN - elif isit("almy"): + elif scanner.sees("almy"): # Approximates Tom Almy's version. game.options &=~ (OPTION_THINGY | OPTION_BLKHOLE | OPTION_BASE | OPTION_WORLDS) game.options |= OPTION_ALMY - elif isit("fancy"): + elif scanner.sees("fancy"): pass - elif len(citem): - proutn(_("What is \"%s\"?") % citem) + elif len(scanner.token): + proutn(_("What is \"%s\"?") % scanner.token) setpassword() if game.passwd == "debug": idebug = True @@ -6218,10 +6218,10 @@ def setpassword(): # set the self-destruct password if game.options & OPTION_PLAIN: while True: - chew() + scanner.chew() proutn(_("Please type in a secret password- ")) - scan() - game.passwd = citem + scanner.next() + game.passwd = scanner.token if game.passwd != None: break else: @@ -6292,23 +6292,23 @@ def listCommands(): def helpme(): # browse on-line help # Give help on commands - key = scan() + key = scanner.next() while True: if key == IHEOL: setwnd(prompt_window) proutn(_("Help on what command? ")) - key = scan() + key = scanner.next() setwnd(message_window) if key == IHEOL: return - if citem in commands or citem == "ABBREV": + if scanner.token in commands or scanner.token == "ABBREV": break skip(1) listCommands() key = IHEOL - chew() + scanner.chew() skip(1) - cmd = citem.upper() + cmd = scanner.token.upper() try: fp = open(SSTDOC, "r") except IOError: @@ -6357,11 +6357,11 @@ def makemoves(): hitme = False game.justin = False game.optime = 0.0 - chew() + scanner.chew() setwnd(prompt_window) clrscr() proutn("COMMAND> ") - if scan() == IHEOL: + if scanner.next() == IHEOL: if game.options & OPTION_CURSES: makechart() continue @@ -6369,7 +6369,7 @@ def makemoves(): clrscr() setwnd(message_window) clrscr() - candidates = filter(lambda x: x.startswith(citem.upper()), + candidates = filter(lambda x: x.startswith(scanner.token.upper()), commands) if len(candidates) == 1: cmd = candidates[0] @@ -6558,72 +6558,85 @@ def randplace(size): w.y = randrange(size) return w -def chew(): - # Demand input for next scan - global inqueue - inqueue = None - -def chew2(): - # return IHEOL next time - global inqueue - inqueue = [] - -def scan(): - # Get a token from the user - global inqueue, line, citem, aaitem - aaitem = 0.0 - citem = '' - - # Read a line if nothing here - if inqueue == None: - line = cgetline() - if curwnd==prompt_window: - clrscr() - setwnd(message_window) - clrscr() - # Skip leading white space - line = line.lstrip() - if line: - inqueue = line.split() - else: - inqueue = [] +class sstscanner: + def __init__(self): + self.type = None + self.token = None + self.real = 0.0 + self.inqueue = [] + def next(self): + # Get a token from the user + self.real = 0.0 + self.token = '' + # Read a line if nothing here + if self.inqueue == None: + line = cgetline() + if curwnd==prompt_window: + clrscr() + setwnd(message_window) + clrscr() + # Skip leading white space + line = line.lstrip() + if line: + self.inqueue = line.split() + else: + self.inqueue = [] + self.type = IHEOL + return IHEOL + elif not self.inqueue: + self.type = IHEOL return IHEOL - elif not inqueue: - return IHEOL - # From here on in it's all looking at the queue - citem = inqueue.pop(0) - if citem == IHEOL: - return IHEOL - try: - aaitem = float(citem) - return IHREAL - except ValueError: - pass - # Treat as alpha - citem = citem.lower() - return IHALPHA + # From here on in it's all looking at the queue + self.token = self.inqueue.pop(0) + if self.token == IHEOL: + self.type = IHEOL + return IHEOL + try: + self.real = float(self.token) + self.type = IHREAL + return IHREAL + except ValueError: + pass + # Treat as alpha + self.token = self.token.lower() + self.type = IHALPHA + self.real = None + return IHALPHA + def push(self, toklist): + self.inqueue += toklist + def chew(self): + # Demand input for next scan + self.inqueue = None + self.real = self.token = None + def chew2(self): + # return IHEOL next time + self.inqueue = [] + self.real = self.token = None + def sees(self, s): + # compares s to item and returns true if it matches to the length of s + return s.startswith(self.token) + def int(self): + # Round token value to nearest integer + return int(round(scanner.real + 0.5)) def ja(): # yes-or-no confirmation - chew() + scanner.chew() while True: - scan() - chew() - if citem == 'y': + scanner.next() + scanner.chew() + if scanner.token == 'y': return True - if citem == 'n': + if scanner.token == 'n': return False proutn(_("Please answer with \"y\" or \"n\": ")) def huh(): # complain about unparseable input - chew() + scanner.chew() skip(1) prout(_("Beg your pardon, Captain?")) -def isit(s): - # compares s to citem and returns true if it matches to the length of s - return s.startswith(citem) def debugme(): # access to the internals for debugging @@ -6652,9 +6665,9 @@ def debugme(): proutn("Kill ") proutn(device[i]) proutn("? ") - chew() - key = scan() - if key == IHALPHA and isit("y"): + scanner.chew() + key = scanner.next() + if key == IHALPHA and scanner.sees("y"): game.damage[i] = 10.0 proutn("Examine/change events? ") if ja() == True: @@ -6683,32 +6696,32 @@ def debugme(): else: proutn("never") proutn("? ") - chew() - key = scan() + scanner.chew() + key = scanner.next() if key == 'n': unschedule(i) - chew() + scanner.chew() elif key == IHREAL: - ev = schedule(i, aaitem) + ev = schedule(i, scanner.real) if i == FENSLV or i == FREPRO: - chew() + scanner.chew() proutn("In quadrant- ") - key = scan() + key = scanner.next() # IHEOL says to leave coordinates as they are if key != IHEOL: if key != IHREAL: prout("Event %d canceled, no x coordinate." % (i)) unschedule(i) continue - w.x = int(round(aaitem)) - key = scan() + w.x = int(round(scanner.real)) + key = scanner.next() if key != IHREAL: prout("Event %d canceled, no y coordinate." % (i)) unschedule(i) continue - w.y = int(round(aaitem)) + w.y = int(round(scanner.real)) ev.quadrant = w - chew() + scanner.chew() proutn("Induce supernova here? ") if ja() == True: game.state.galaxy[game.quadrant.x][game.quadrant.y].supernova = True @@ -6717,8 +6730,7 @@ def debugme(): if __name__ == '__main__': try: global line, thing, game, idebug - game = citem = aaitem = inqueue = None - line = '' + game = None thing = coord() thing.angry = False game = gamestate() @@ -6767,17 +6779,15 @@ if __name__ == '__main__': logfp.write("# seed %s\n" % seed) logfp.write("# options %s\n" % " ".join(arguments)) random.seed(seed) - if arguments: - inqueue = arguments - else: - inqueue = None + scanner = sstscanner() + scanner.push(arguments) try: iostart() while True: # Play a game setwnd(fullscreen_window) clrscr() prelim() - setup(needprompt=not inqueue) + setup() if game.alldone: score() game.alldone = False @@ -6789,9 +6799,9 @@ if __name__ == '__main__': if game.tourn and game.alldone: proutn(_("Do you want your score recorded?")) if ja() == True: - chew2() + scanner.chew2() freeze(False) - chew() + scanner.chew() proutn(_("Do you want to play again? ")) if not ja(): break