Added simple scripting for yaml files.
This commit is contained in:
Patrick Marsee
parent
8355dccb33
commit
b332d579e9
6 changed files with 506 additions and 4 deletions
484
gamebase.py
484
gamebase.py
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@ -25,6 +25,7 @@ class GameBase(object):
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self.__behaviors = {}
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self.__gameEvents = {}
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self.__IOCalls = {} # {str : function}
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self.__scripts = {} # functions with the same signature, but not callable by the user
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self.customValues = {} # for setting flags and such
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self.level = None
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self.persist = {} # {level : {thingName : thing}}
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@ -61,6 +62,11 @@ class GameBase(object):
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self.registerUseFunc('info', self.info)
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self.registerUseFunc('wear', self.wear)
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self.registerBehavior('wander', self.wander)
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self.registerScript('if', self.ifScript)
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self.registerScript('printf', self.printfScript)
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self.registerScript('set', self.setCustomValue)
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self.registerScript('spawn', self.spawnThing)
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self.registerScript('give', self.giveToPlayer)
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# Helper functions
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@ -175,6 +181,60 @@ Returns (thing, x, y). "Thing" can be None."""
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return '\n'.join(ret)
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def getValueFromString(self, arg: str):
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val = None
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validIdent = _re.match(r'[_A-Za-z][_0-9A-Za-z]*', arg)
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if arg[0] in '"\'': # assume it's a string
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val = arg[1:-1]
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elif _re.match(r'[+-]?(?:[0-9]*[.])?[0-9]+', arg) != None:
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if '.' in arg:
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val = float(arg)
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else:
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val = int(arg)
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elif arg.casefold() == 'true':
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val = True
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elif arg.casefold() == 'false':
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val = False
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elif arg.casefold() == 'playerx':
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val = self.playerx
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elif arg.casefold() == 'playery':
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val = self.playery
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elif arg.casefold() == 'playername':
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val = self.playerName
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elif arg.casefold() == 'playerinv':
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val = self.playerInv
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elif validIdent != None:
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if 'scriptLocal' in self.customValues and validIdent.group() in self.customValues['scriptLocal']:
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val = self.customValues['scriptLocal'][arg]
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elif validIdent.group() in self.customValues:
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val = self.customValues[arg]
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else:
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return False # for if statements; if a variable doesn't exist, should evaluate to False
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# evaluate all values of all indecies
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if validIdent.end() < len(arg):
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if arg[validIdent.end()] == '[':
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openBracket = validIdent.end()
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ptr = openBracket
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depth = 0
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while ptr < len(arg):
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if ptr == '[':
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depth += 1
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elif ptr == ']':
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depth -= 1
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if depth == 0:
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var = var[self.getValueFromString(arg[openBracket+1:ptr])]
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openBracket = ptr + 1
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ptr += 1
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if depth == 0 and arg[ptr] != '[':
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raise GameError('Invalid value syntax: {}'.format(arg))
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else:
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raise GameError('Invalid value syntax: {}'.format(arg))
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else:
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raise GameError('Invalid argument to getValueFromString: {}'.format(arg))
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return val
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# commands
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def go(self, args):
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"""go [-r] [to [the]] destination [additional arguments...]
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Go to a location. "walk" and "move" are aliases of go.
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@ -486,6 +546,7 @@ Object can be the name of the object, or its coordinates."""
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self.prevx, self.prevy = self.playerx, self.playery
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if self.onLevelLoad != None:
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self.onLevelLoad()
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self.parseScript(self.level.enterScript)
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def saveGame(self, args):
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if len(args) < 1:
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@ -541,13 +602,86 @@ Object can be the name of the object, or its coordinates."""
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#_hq.heappush(self.eventQueue, (self.gameTime, _ge.NoOpEvent()))
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return
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def dialog(self, dialogName, conversant):
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def dialog(self, dialogName, conversant = None):
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yaml = _yaml.YAML()
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dialog = None
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with open(dialogName, 'r') as f:
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dialog = yaml.load(f)
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self.getIO('dialog')(dialog)
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def parseScript(self, instr: str):
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"""parses then runs a script."""
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#print('parseScript called with {}.'.format(instr))
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if instr == '':
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return # nothing to be done.
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literalStr = list(instr)
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inQuotes = False
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script = []
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stack = []
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ret = []
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argStart = 0
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c = 0
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l = 0
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while c < len(instr):
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if inQuotes:
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if instr[c] == '"':
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if instr[c-1] == '\\':
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del literalStr[l-1]
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l -= 1
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else:
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inQuotes = False
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del literalStr[l]
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l -= 1
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else:
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if instr[c] == '"': # quoted string
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if l > 0 and instr[c-1] == '\\':
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del literalStr[l-1]
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l -= 1
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else:
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inQuotes = True
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del literalStr[l]
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l -= 1
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elif instr[c] in ' \t\n;}{':
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if argStart != l:
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ret.append(''.join(literalStr[argStart:l]))
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if instr[c] == ';':
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script.append(ret)
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ret = []
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elif instr[c] == '{': # block
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stack.append(script)
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script.append(ret)
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script = []
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ret.append(script)
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ret = []
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del literalStr[l]
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l -= 1
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elif instr[c] == '}': # close block
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if len(ret) > 0:
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script.append(ret)
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script = stack.pop()
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ret = []
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del literalStr[l]
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l -= 1
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argStart = l + 1
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c += 1
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l += 1
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if argStart != l:
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ret.append(''.join(literalStr[argStart:l]))
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script.append(ret)
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#print('After parsing: {}'.format(script))
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self.customValues['scriptLocal'] = {}
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self.runScript(script)
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del self.customValues['scriptLocal']
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def runScript(self, script: list):
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"""run a script"""
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for line in script:
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if line[0].casefold() == 'playercmd':
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# run a player command
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self.getIO('playercmd')(line[1:])
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else:
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self.__scripts[line[0]](line[1:])
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def gameEventLoop(self):
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#print(self.skipLoop)
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if self.skipLoop:
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@ -727,6 +861,350 @@ Object can be the name of the object, or its coordinates."""
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print("The key doesn't fit that lock.", file = self.outstream)
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return 0.125
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# default scripts
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def ifScript(self, args):
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"""If statement: if [not] value [op value] script"""
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if len(args) < 2:
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raise GameError('Incomplete If statement: if {}'.format(' '.join(args)))
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inverse = False
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ret = False
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if args[0] == 'not':
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inverse = True
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args.pop(0)
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if len(args) < 2:
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raise GameError('Incomplete If statement: if {}'.format(' '.join(args)))
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# evaluate condition
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val = self.parseValue(args[0])
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if args[1] in ('==', '!=', '<=', '>=', '<', '>'):
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if len(args) < 4:
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raise GameError('Incomplete If statement: if {}'.format(' '.join(args)))
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val2 = self.parseValue(args[2])
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if args[1] == '==':
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ret = val == val2
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elif args[1] == '!=':
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ret = val != val2
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elif args[1] == '<=':
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ret = val <= val2
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elif args[1] == '>=':
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ret = val >= val2
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elif args[1] == '<':
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ret = val < val2
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elif args[1] == '>':
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ret = val > val2
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args = args[3:]
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else:
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ret = bool(val)
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args = args[1:]
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if inverse:
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ret = not ret
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# if condition is true, evaluate further
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if ret:
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if isinstance(args[-1], list):
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self.runScript(args[-1])
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else:
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self.runScript([args])
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def printfScript(self, args):
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"""Assume the first argument is a stringable object, and format all others."""
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print(args[0].format(*[self.getValueFromString(i) for i in args[1:]]), file = self.outstream)
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def setCustomValue(self, args):
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"""takes [customValue, op, value]"""
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env = self.customValues
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if len(args) > 0 and args[0] == 'local':
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if 'scriptLocal' in self.customValues:
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env = self.customValues['scriptLocal']
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else:
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raise GameError('Attempted to set a local variable without local scope.')
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args.pop(0)
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if len(args) < 3 or args[1] not in ('=', '+=', '-=', '*=', '/=', '%=', '//=', '**=', 'b=', '!=', '|=', '&=', '^='):
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raise GameError('Arguments are not fit for the setCustomValue script.')
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val = self.getValueFromString(args[2])
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# set the value to a default value (0, 0.0, '', etc.) if not yet assigned
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if args[0] not in env and args[1] != '=':
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if isinstance(val, int):
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env[args[0]] = 0
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elif isinstance(val, float):
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env[args[0]] = 0.0
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elif isinstance(val, str):
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env[args[0]] = ''
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elif isinstance(val, bool):
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env[args[0]] = False
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# Beyond this point are types that can only be found from other customValues
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elif isinstance(val, tuple):
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env[args[0]] = ()
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elif isinstance(val, list):
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env[args[0]] = []
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elif isinstance(val, dict):
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env[args[0]] = {}
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else:
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raise GameError("Operation not supported for unassigned custom values of type {}: {}"
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.format(type(val), args[1]))
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# done parsing, evaluate
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if args[1] == '=':
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env[args[0]] = val
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elif args[1] == '+=':
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env[args[0]] += val
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elif args[1] == '-=':
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env[args[0]] -= val
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elif args[1] == '*=':
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env[args[0]] *= val
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elif args[1] == '/=':
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env[args[0]] /= val
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elif args[1] == '%=':
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env[args[0]] %= val
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elif args[1] == '//=':
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env[args[0]] //= val
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elif args[1] == '**=':
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env[args[0]] **= val
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elif args[1] == 'b=':
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env[args[0]] = bool(val)
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elif args[1] == '!=':
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env[args[0]] = not bool(val)
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elif args[1] == '|=':
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env[args[0]] |= val
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elif args[1] == '&=':
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env[args[0]] &= val
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elif args[1] == '^=':
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env[args[0]] ^= val
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def spawnThing(self, args):
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"""Spawns a thing. [type name=... location=... etc]"""
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if args[0].casefold() not in ('item', 'useable', 'npc', 'door', 'mapexit', 'mapentrance'):
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raise GameError("{} not a spawnable thing type.".format(args[0]))
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# Get the standard fields that most Things have in common: name, coordinates, graphic.
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name = None
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x, y = -1, -1
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fgc, bgc, shape = None, None, None
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persist = False
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for i in args[1:]:
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if i[0:5].casefold() == 'name=':
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name = i[5:]
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elif i[0:10].casefold() == 'location=':
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_, x, y = self.parseCoords(i[10:].split())
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elif i[0:4].casefold() == 'fgc=':
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if len(i[4:]) != 7 or i[0] != '#':
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raise GameError("Invalid color: {}".format(i[4:]))
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for j in i[4:]:
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if j not in '0123456789abcdefABCDEF':
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raise GameError("Invalid color: {}".format(i[4:]))
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fgc = i[4:]
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elif i[0:4].casefold() == 'bgc=':
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if len(i[4:]) != 7 or i[0] != '#':
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raise GameError("Invalid color: {}".format(i[4:]))
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for j in i[4:]:
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if j not in '0123456789abcdefABCDEF':
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raise GameError("Invalid color: {}".format(i[4:]))
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bgc = i[4:]
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elif i[0:6].casefold() == 'shape=':
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if len(i[6:]) != 7 or i[0] != '#':
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raise GameError("Invalid color: {}".format(i[6:]))
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for j in i[6:]:
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if j not in '0123456789abcdefABCDEF':
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raise GameError("Invalid color: {}".format(i[6:]))
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shape = i[6:]
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elif i == 'persist':
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persist = True
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if x < 0 or y < 0:
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raise GameError("Cannot spawn thing: bad location")
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# Unfortunately, there needs to be a case for each type.
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if args[0].casefold() == 'item':
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# spawn an item
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description = 'A nondescript item.'
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useFunc = ''
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useOnFunc = ''
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customValues = {}
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ranged = False
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if name == None:
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name = 'item {}'.format(self.nextThing)
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if fgc == None:
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fgc = _gm.Item.defaultGraphic['fgc']
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if bgc == None:
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bgc = _gm.Item.defaultGraphic['bgc']
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if shape == None:
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shape = _gm.Item.defaultGraphic['shape']
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for i in args[1:]:
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if i[0:12].casefold() == 'description=':
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description = i[12:]
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elif i[0:8].casefold() == 'usefunc=':
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useFunc = i[8:]
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elif i[0:10].casefold() == 'useonfunc=':
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useOnFunc = i[10:]
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elif i.casefold() == 'ranged':
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ranged = True
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elif i[0:3].casefold() == 'cv:':
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equalsign = i.index('=')
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cv = i[3:equalsign]
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customValues[cv] = getValueFromString(i[equalsign+1:])
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thing = _gm.Item(name, x, y, description, useFunc, useOnFunc, customValues, ranged, (bgc, fgc, shape))
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self.nextThing = self.level.addThing(thing, self.nextThing, persist)
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elif args[0].casefold() == 'useable':
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# spawn a useable thing
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description = 'A nondescript useable thing.'
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useFunc = ''
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customValues = {}
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playerx, playery = x, y
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if name == None:
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name = 'useable {}'.format(self.nextThing)
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if fgc == None:
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fgc = _gm.Item.defaultGraphic['fgc']
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if bgc == None:
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bgc = _gm.Item.defaultGraphic['bgc']
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if shape == None:
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shape = _gm.Item.defaultGraphic['shape']
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for i in args[1:]:
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if i[0:12].casefold() == 'description=':
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description = i[12:]
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elif i[0:8].casefold() == 'usefunc=':
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useFunc = i[8:]
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elif i[0:10].casefold() == 'playerpos=':
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_, playerx, playery = self.parseCoords(i[10:].split())
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elif i[0:3].casefold() == 'cv:':
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equalsign = i.index('=')
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cv = i[3:equalsign]
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customValues[cv] = getValueFromString(i[equalsign+1:])
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thing = _gm.Useable(name, x, y, description, useFunc, customValues, playerx, playery, (bgc, fgc, shape))
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self.nextThing = self.level.addThing(thing, self.nextThing, persist)
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elif args[0].casefold() == 'npc':
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# spawn an NPC
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description = 'A nondescript character.'
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behavior = ''
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inv = []
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customValues = {}
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playerx, playery = x, y
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if name == None:
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name = 'character {}'.format(self.nextThing)
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if fgc == None:
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fgc = _gm.Item.defaultGraphic['fgc']
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if bgc == None:
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bgc = _gm.Item.defaultGraphic['bgc']
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if shape == None:
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shape = _gm.Item.defaultGraphic['shape']
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for i in args[1:]:
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if i[0:12].casefold() == 'description=':
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description = i[12:]
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elif i[0:9].casefold() == 'behavior=':
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useFunc = i[9:]
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elif i[0:10].casefold() == 'playerpos=':
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_, playerx, playery = self.parseCoords(i[10:].split())
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elif i[0:3].casefold() == 'cv:':
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equalsign = i.index('=')
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cv = i[3:equalsign]
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customValues[cv] = getValueFromString(i[equalsign+1:])
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thing = _gm.NPC(name, x, y, description, behavior, inv, customValues, playerx, playery, False, (bgc, fgc, shape))
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self.nextThing = self.level.addThing(thing, self.nextThing, persist)
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elif args[0].casefold() == 'door':
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# spawn a door
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description = 'a nondescript door.'
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locked = False
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key = None
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if name == None:
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name = 'door {}'.format(self.nextThing)
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if fgc == None:
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fgc = _gm.Item.defaultGraphic['fgc']
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if bgc == None:
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bgc = _gm.Item.defaultGraphic['bgc']
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if shape == None:
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shape = _gm.Item.defaultGraphic['shape']
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for i in args[1:]:
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if i[0:12].casefold() == 'description=':
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description = i[12:]
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elif i.casefold() == 'locked':
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locked = True
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thing = _gm.Door(name, x, y, locked, description, key, (bgc, fgc, shape))
|
||||
self.nextThing = self.level.addThing(thing, self.nextThing, persist)
|
||||
elif args[0].casefold() == 'mapexit':
|
||||
# spawn an exit to another map (use with EXTREME caution!)
|
||||
destination = ''
|
||||
prefix = None
|
||||
exitid = 0
|
||||
if name == None:
|
||||
name = 'somewhere'
|
||||
if fgc == None:
|
||||
fgc = _gm.Item.defaultGraphic['fgc']
|
||||
if bgc == None:
|
||||
bgc = _gm.Item.defaultGraphic['bgc']
|
||||
if shape == None:
|
||||
shape = _gm.Item.defaultGraphic['shape']
|
||||
for i in args[1:]:
|
||||
if i[0:12].casefold() == 'destination=':
|
||||
destination = i[12:]
|
||||
elif i[0:7].casefold() == 'prefix=':
|
||||
prefix = i[7:]
|
||||
elif i[0:7].casefold() == 'exitid=':
|
||||
exitid = int(i[7:])
|
||||
thing = _gm.MapExit(name, x, y, exitid, destination, prefix, (bgc, fgc, shape))
|
||||
self.nextThing = self.level.addThing(thing, self.nextThing, persist)
|
||||
elif args[0].casefold() == 'mapentrance':
|
||||
# spawn a map entrance
|
||||
exitid = 0
|
||||
for i in args[1:]:
|
||||
if i[0:7].casefold() == 'exitid=':
|
||||
exitid = int(i[7:])
|
||||
thing = _gm.MapEntrance(x, y, exitid, name)
|
||||
self.nextThing = self.level.addThing(thing, self.nextThing, persist)
|
||||
|
||||
def giveToPlayer(self, args):
|
||||
"""We get to assume it's an item."""
|
||||
name = 'item {}'.format(self.nextThing)
|
||||
x, y = self.playerx, self.playery
|
||||
fgc, bgc, shape = _gm.Item.defaultGraphic['fgc'], _gm.Item.defaultGraphic['bgc'], _gm.Item.defaultGraphic['shape']
|
||||
description = 'A nondescript item.'
|
||||
persist = True
|
||||
useFunc = ''
|
||||
useOnFunc = ''
|
||||
customValues = {}
|
||||
ranged = False
|
||||
for i in args[1:]:
|
||||
if i[0:5].casefold() == 'name=':
|
||||
name = i[5:]
|
||||
elif i[0:10].casefold() == 'location=':
|
||||
_, x, y = self.parseCoords(i[10:].split())
|
||||
elif i[0:4].casefold() == 'fgc=':
|
||||
if len(i[4:]) != 7 or i[0] != '#':
|
||||
raise GameError("Invalid color: {}".format(i[4:]))
|
||||
for j in i[4:]:
|
||||
if j not in '0123456789abcdefABCDEF':
|
||||
raise GameError("Invalid color: {}".format(i[4:]))
|
||||
fgc = i[4:]
|
||||
elif i[0:4].casefold() == 'bgc=':
|
||||
if len(i[4:]) != 7 or i[0] != '#':
|
||||
raise GameError("Invalid color: {}".format(i[4:]))
|
||||
for j in i[4:]:
|
||||
if j not in '0123456789abcdefABCDEF':
|
||||
raise GameError("Invalid color: {}".format(i[4:]))
|
||||
bgc = i[4:]
|
||||
elif i[0:6].casefold() == 'shape=':
|
||||
if len(i[6:]) != 7 or i[0] != '#':
|
||||
raise GameError("Invalid color: {}".format(i[6:]))
|
||||
for j in i[6:]:
|
||||
if j not in '0123456789abcdefABCDEF':
|
||||
raise GameError("Invalid color: {}".format(i[6:]))
|
||||
shape = i[6:]
|
||||
elif i == 'persist':
|
||||
persist = True
|
||||
elif i[0:12].casefold() == 'description=':
|
||||
description = i[12:]
|
||||
elif i[0:8].casefold() == 'usefunc=':
|
||||
useFunc = i[8:]
|
||||
elif i[0:10].casefold() == 'useonfunc=':
|
||||
useOnFunc = i[10:]
|
||||
elif i.casefold() == 'ranged':
|
||||
ranged = True
|
||||
elif i[0:3].casefold() == 'cv:':
|
||||
equalsign = i.index('=')
|
||||
cv = i[3:equalsign]
|
||||
customValues[cv] = getValueFromString(i[equalsign+1:])
|
||||
thing = _gm.Item(name, x, y, description, useFunc, useOnFunc, customValues, ranged, (bgc, fgc, shape))
|
||||
self.nextThing = self.level.addThing(thing, self.nextThing, persist)
|
||||
|
||||
# behaviors
|
||||
|
||||
def wander(self, actor):
|
||||
|
|
@ -752,6 +1230,10 @@ always give the player a turn, False otherwise."""
|
|||
"""Registers a function for useFuncs and such to use."""
|
||||
self.__IOCalls[name] = func
|
||||
|
||||
def registerScript(self, name, func):
|
||||
"""Registers a function as a script callable from yaml files."""
|
||||
self.__scripts[name] = func
|
||||
|
||||
def getIO(self, name):
|
||||
"""This is so derived classes can access their IOCalls."""
|
||||
if name not in self.__IOCalls:
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue