Initial commit
This commit is contained in:
commit
40e0a2aab0
|
|
@ -0,0 +1,139 @@
|
|||
|
||||
# Created by https://www.toptal.com/developers/gitignore/api/python
|
||||
# Edit at https://www.toptal.com/developers/gitignore?templates=python
|
||||
|
||||
### Python ###
|
||||
# Byte-compiled / optimized / DLL files
|
||||
__pycache__/
|
||||
*.py[cod]
|
||||
*$py.class
|
||||
|
||||
# C extensions
|
||||
*.so
|
||||
|
||||
# Distribution / packaging
|
||||
.Python
|
||||
build/
|
||||
develop-eggs/
|
||||
dist/
|
||||
downloads/
|
||||
eggs/
|
||||
.eggs/
|
||||
lib/
|
||||
lib64/
|
||||
parts/
|
||||
sdist/
|
||||
var/
|
||||
wheels/
|
||||
pip-wheel-metadata/
|
||||
share/python-wheels/
|
||||
*.egg-info/
|
||||
.installed.cfg
|
||||
*.egg
|
||||
MANIFEST
|
||||
|
||||
# PyInstaller
|
||||
# Usually these files are written by a python script from a template
|
||||
# before PyInstaller builds the exe, so as to inject date/other infos into it.
|
||||
*.manifest
|
||||
*.spec
|
||||
|
||||
# Installer logs
|
||||
pip-log.txt
|
||||
pip-delete-this-directory.txt
|
||||
|
||||
# Unit test / coverage reports
|
||||
htmlcov/
|
||||
.tox/
|
||||
.nox/
|
||||
.coverage
|
||||
.coverage.*
|
||||
.cache
|
||||
nosetests.xml
|
||||
coverage.xml
|
||||
*.cover
|
||||
*.py,cover
|
||||
.hypothesis/
|
||||
.pytest_cache/
|
||||
|
||||
# Translations
|
||||
*.mo
|
||||
*.pot
|
||||
|
||||
# Django stuff:
|
||||
*.log
|
||||
local_settings.py
|
||||
db.sqlite3
|
||||
db.sqlite3-journal
|
||||
|
||||
# Flask stuff:
|
||||
instance/
|
||||
.webassets-cache
|
||||
|
||||
# Scrapy stuff:
|
||||
.scrapy
|
||||
|
||||
# Sphinx documentation
|
||||
docs/_build/
|
||||
|
||||
# PyBuilder
|
||||
target/
|
||||
|
||||
# Jupyter Notebook
|
||||
.ipynb_checkpoints
|
||||
|
||||
# IPython
|
||||
profile_default/
|
||||
ipython_config.py
|
||||
|
||||
# pyenv
|
||||
.python-version
|
||||
|
||||
# pipenv
|
||||
# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
|
||||
# However, in case of collaboration, if having platform-specific dependencies or dependencies
|
||||
# having no cross-platform support, pipenv may install dependencies that don't work, or not
|
||||
# install all needed dependencies.
|
||||
#Pipfile.lock
|
||||
|
||||
# PEP 582; used by e.g. github.com/David-OConnor/pyflow
|
||||
__pypackages__/
|
||||
|
||||
# Celery stuff
|
||||
celerybeat-schedule
|
||||
celerybeat.pid
|
||||
|
||||
# SageMath parsed files
|
||||
*.sage.py
|
||||
|
||||
# Environments
|
||||
.env
|
||||
.venv
|
||||
env/
|
||||
venv/
|
||||
ENV/
|
||||
env.bak/
|
||||
venv.bak/
|
||||
|
||||
# Spyder project settings
|
||||
.spyderproject
|
||||
.spyproject
|
||||
|
||||
# Rope project settings
|
||||
.ropeproject
|
||||
|
||||
# mkdocs documentation
|
||||
/site
|
||||
|
||||
# mypy
|
||||
.mypy_cache/
|
||||
.dmypy.json
|
||||
dmypy.json
|
||||
|
||||
# Pyre type checker
|
||||
.pyre/
|
||||
|
||||
# pytype static type analyzer
|
||||
.pytype/
|
||||
|
||||
# End of https://www.toptal.com/developers/gitignore/api/python
|
||||
|
|
@ -0,0 +1,5 @@
|
|||
# ChooseScript - CYOA-style Scripting
|
||||
|
||||
ChooseScript is a scripting language for CYOA-like stories. It has variables, input, jumping, and most importantly, it has choices!
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,146 @@
|
|||
# ChooseScript Specification v0.1
|
||||
|
||||
## Abstract
|
||||
|
||||
ChooseScript is a simple scripting language for Choose Your Own Adventure-style
|
||||
stories. It has facilities to handle rudimentary state, take input, give
|
||||
output, make choices, and direct the story.
|
||||
|
||||
The reference implementation of ChooseScript was written in about a day in
|
||||
Python. It should not be taken as a be-all-end-all guide for implementing
|
||||
ChooseScript in any other context. Rather, when this doc and the reference
|
||||
implementation contradict each other, this doc should be followed.
|
||||
|
||||
ChooseScript files SHOULD be stored with the extension "chs". They MAY be
|
||||
stored with the extension "txt".
|
||||
|
||||
## 1. Lexer
|
||||
|
||||
### 1.1. Tokens
|
||||
|
||||
There are 6 types of tokens. They are as follows. (Note that each token name
|
||||
can be used in a sentence to refer to a token of that type; for instance, a
|
||||
`STEM` token may be referred to as simply "a stem".)
|
||||
|
||||
- `STEM` - A stem is defined as "a string of alphanumeric characters, starting
|
||||
with a letter of either case, and without quotes."
|
||||
- `BOOLEAN` - The literal stems `true` and `false`.
|
||||
- `COMMAND` - A command. (See section 1.2 for commands.) All commands are
|
||||
valid stems.
|
||||
- `TARGET` - A stem, followed by a colon. This MUST NOT be the same as a
|
||||
command, and it SHOULD be unique. Targets are used as jumping places for
|
||||
`goto`, `beq`, and `bne` commands.
|
||||
- `NUMBER` - An integer.
|
||||
- `STRING` - A series of characters contained in double quotes. Double quotes
|
||||
can be escaped in the string by the literal `\"`. Newlines and whitespace
|
||||
inside strings are taken as literal.
|
||||
|
||||
### 1.2. Command stems
|
||||
|
||||
The following literal stems are commands. They MUST NOT be used as targets.
|
||||
|
||||
- `print` - see section 2.1
|
||||
- `goto` - see section 2.2
|
||||
- `beq` - see section 2.2.1
|
||||
- `bne` - see section 2.2.2
|
||||
- `choose` - see section 2.3
|
||||
- `set` - see section 2.4
|
||||
- `input` - see section 2.4.1
|
||||
- `testequals` - see section 2.5
|
||||
- `check` - see section 2.5.1
|
||||
|
||||
## 2. Commands
|
||||
|
||||
The current version of the ChooseScript spec implements 9 commands. Commands
|
||||
can take 0 or more arguments (in practice, they each take at least one).
|
||||
|
||||
### 2.1. `print <STRING>`
|
||||
|
||||
Prints the argument string to an output. The argument string MUST expand
|
||||
variables (see section 3.1, "Expanding variables in strings").
|
||||
|
||||
### 2.2. `goto <STEM>`
|
||||
|
||||
Execution resumes from the target corresponding to the argument stem. If there
|
||||
is no target corresponding to the argument stem, an error MUST be thrown.
|
||||
|
||||
#### 2.2.1. `beq <STEM>`
|
||||
|
||||
If the flag is set (see section 3.2, "Comparison flag"), then this acts as a
|
||||
`goto` command. Otherwise, execution MUST fall through to the next command.
|
||||
|
||||
#### 2.2.1. `bne <STEM>`
|
||||
|
||||
If the flag is clear, then this acts as a `goto` command. Otherwise, execution
|
||||
MUST fall through to the next command.
|
||||
|
||||
### 2.3. `choose <STRING> <STEM> [<STRING> <STEM> ...]`
|
||||
|
||||
Allows the user to choose between 1 or more options. Each argument string
|
||||
corresponds to an argument stem. If the option corresponding to an argument
|
||||
string is chosen, that string's respective argument stem is used as the target
|
||||
to resume execution at. If an invalid option is chosen, execution MUST fall
|
||||
through to the next command. This allows the script to display a prompt to
|
||||
choose again, or take a default action if possible.
|
||||
|
||||
### 2.4. `set <STEM> <STRING>` OR `set <STEM> <NUMBER>` OR `set <STEM>
|
||||
<BOOLEAN>`
|
||||
|
||||
Sets the variable represented by the argument stem to the argument string,
|
||||
number, or boolean.
|
||||
|
||||
#### 2.4.1 `input <STEM> <STRING> [<STRING>]`
|
||||
|
||||
Takes input from the user, and stores it in the variable represented by the
|
||||
argument stem. The first argument string is used as the prompt, while the
|
||||
second argument string is the error message to provide if no input is given.
|
||||
|
||||
If the user doesn't provide any input, the second argument string is shown, and
|
||||
the user is prompted again. If the second argument string is not provided, a
|
||||
message similar in intent to "You must provide a value!" MUST be used instead.
|
||||
|
||||
### 2.5. `testequals <STEM> <STRING>` OR `testequals <STEM> <NUMBER>` OR
|
||||
`testequals <STEM> <BOOLEAN>`
|
||||
|
||||
Compares the variable represented by the argument stem to the argument string,
|
||||
number, or boolean, and stores the result in the flag (see section 3.2,
|
||||
"Comparison flag").
|
||||
|
||||
An undefined variable MUST fail all comparisons.
|
||||
|
||||
#### 2.5.1. `check <STEM>`
|
||||
|
||||
A shorthand for `testequals <STEM> true`. If the variable represented by the
|
||||
argument stem is not a boolean value, an error MUST be thrown.
|
||||
|
||||
## 3. Implementation details
|
||||
|
||||
The following are details of the implementation. These are meant to be
|
||||
generically-described concepts that describe a given function.
|
||||
|
||||
### 3.1. Expanding variables in strings
|
||||
|
||||
When a string is printed to an output, it must expand any variables in the
|
||||
string. Variables are inserted into a string by surrounding the variable name
|
||||
in double-curly brackets (like `{{so}}`).
|
||||
|
||||
If a variable is undefined, the insertion statement MUST remain unchanged. This
|
||||
allows a script writer to notice when a variable hasn't been set.
|
||||
|
||||
If a variable is defined, the insertion statement MUST be replaced by the
|
||||
string representation of the variable value. Booleans MUST be represented as
|
||||
literal `true` and `false`.
|
||||
|
||||
### 3.2. Comparison flag
|
||||
|
||||
The `testequals` and `check` commands test a variable value. If that test
|
||||
succeeds (i.e; the variable is equal to the given value, or the boolean
|
||||
variable is true), the comparison flag MUST be set to true. If the test fails
|
||||
(i.e; the variable is *not* equal to the given value, the boolean variable is
|
||||
false, or the variable is undefined), the comparison flag MUST be set to false.
|
||||
|
||||
If the comparison flag is true, then `beq` will branch, and `bne` will allow
|
||||
execution to fall through to the next command. If the comparison flag is false,
|
||||
the opposite occurs.
|
||||
|
||||
The comparison flag MUST start as false.
|
||||
|
|
@ -0,0 +1,142 @@
|
|||
#Ask for name#
|
||||
input name "What's your name?" "Just put `Evan` if you don't want to give me your real name. Or maybe `Norman`. I like Norman."
|
||||
#Variables in {{double curly brackets}} get expanded if they're set.#
|
||||
print "Hello, {{name}}! Welcome to the ChooseScript demo."
|
||||
print "This is just a simple example of a game in ChooseScript. There's not much to be said."
|
||||
#Choices are implemented via the choose command. The string is a label, and the stem is the goto target for that choice.#
|
||||
menu:
|
||||
choose "New Game" start "Continue" continue
|
||||
#If the choice isn't valid, it'll fall through, so you can handle that however you please.#
|
||||
print "Invalid choice!"
|
||||
goto menu
|
||||
|
||||
#A simple password system can be implemented by checking against a table of known passwords.#
|
||||
#The `testequals` command tests if a variable is equal to a value. If it is, then it sets the flag to true.#
|
||||
#`beq` jumps to the specified target if the flag is true, and falls through otherwise.#
|
||||
continue:
|
||||
input password "Enter password."
|
||||
testequals password "1234"
|
||||
beq start
|
||||
testequals password "5142"
|
||||
beq markread
|
||||
testequals password "6245"
|
||||
beq turn1
|
||||
testequals password "9142"
|
||||
beq markreadturn1
|
||||
testequals password "9999"
|
||||
beq turn2
|
||||
testequals password "8888"
|
||||
beq markreadturn2
|
||||
print "Invalid password {{password}}!"
|
||||
print "Starting new game..."
|
||||
|
||||
start:
|
||||
print "{{name}} wakes up in a room with no recollection of how they got there."
|
||||
print "A plaque in front of them reads as follows:"
|
||||
print "+---------------------------+"
|
||||
print "| THE HALLWAY OF FATE |"
|
||||
print "|Choose wisely, or you shall|"
|
||||
print "| meet a death by endless |"
|
||||
print "| abyss. |"
|
||||
print "+---------------------------+"
|
||||
choice:
|
||||
print "There's a map on the wall to the left, and a hallway to the right."
|
||||
choose "Read the map" map "Go down the hallway" turn1 "Quit the game" quitstart
|
||||
|
||||
#Boolean flags can be implemented using the `check` and `set` commands.#
|
||||
#The relevant bit here is to check a flag by using the `check` command.#
|
||||
#`check <var>` is a shortcut for `testequals <var> true`.#
|
||||
#Don't use `check <var>` if the variable in question isn't a boolean.#
|
||||
#Unset variables are assumed to be false.#
|
||||
map:
|
||||
check readmap
|
||||
beq skipmap
|
||||
print "From reading the map, you know you have to make a right turn, then go straight."
|
||||
markread:
|
||||
#To set a flag, use `set <var> true`. (Or `set <var> false` to clear a flag.)#
|
||||
set readmap true
|
||||
goto choice
|
||||
skipmap:
|
||||
print "You already read the map. Just go down the hallway."
|
||||
goto start
|
||||
|
||||
#The `markread<blah>` labels simply set the readmap flag and fall through to their respective label.#
|
||||
markreadturn1:
|
||||
set readmap true
|
||||
turn1:
|
||||
print "You come to a 3-way fork in the hallway. Do you:"
|
||||
choose "Go left" fail "Go right" turn2 "Go straight" fail "Quit the game" quitturn1
|
||||
print "Invalid choice!"
|
||||
goto turn1
|
||||
|
||||
markreadturn2:
|
||||
set readmap true
|
||||
turn2:
|
||||
print "You turn to the right, and breathe a sigh of relief as the floor doesn't drop out from under you."
|
||||
check readmap
|
||||
bne turn2choose
|
||||
print "After all, that's what the map said to do."
|
||||
turn2choose:
|
||||
print "A ways down the hallway, you reach another 3-way fork. Do you:"
|
||||
choose "Go left" fail "Go right" fail "Go straight" success "Quit the game" quitturn2
|
||||
print "Invalid choice!"
|
||||
goto turn2choose
|
||||
|
||||
#Generalized failure message. I could have a different failure message for each#
|
||||
#possible wrong direction, but I don't feel like putting that much effort in.#
|
||||
fail:
|
||||
print "You pick your path. As you go to walk down it, you suddenly feel the floor drop out from under you. You fall into an endless abyss."
|
||||
print "Game over."
|
||||
goto end
|
||||
|
||||
#Success condition.#
|
||||
success:
|
||||
check readmap
|
||||
bne skipendmap
|
||||
print "The map said to go straight, and so straight you went."
|
||||
skipendmap:
|
||||
print "As you head straight down the hallway, you breathe a sigh of relief. The floor under you stays solid. Soon, you're blinded by a light."
|
||||
print "When the light clears, you're back in front of your computer."
|
||||
print "You did it! Congratulations, {{name}}!"
|
||||
#The flag is still set to the value of `readmap` from earlier, so we don't need to `check` it again.#
|
||||
beq end
|
||||
print "You didn't even need the map! Did you cheat, or did you trial-and-error your way through it?"
|
||||
print "Either way, most excellent!"
|
||||
goto end
|
||||
|
||||
#Now for the password system. #
|
||||
#At every stage, you can quit out, and you'll receive a password. #
|
||||
#For each stage, the corresponding `quit<label>` checks if readmap #
|
||||
#is set, and if so, it jumps to `quit<label>read`. Otherwise, it spits#
|
||||
#out the password for not having read the map and quits. #
|
||||
#If readmap is set, however, it'll spit out the password for having #
|
||||
#read the map instead. #
|
||||
quitstart:
|
||||
check readmap
|
||||
beq quitstartread
|
||||
print "Your password is `1234`."
|
||||
goto end
|
||||
quitstartread:
|
||||
print "Your password is `5142`."
|
||||
goto end
|
||||
quitturn1:
|
||||
check readmap
|
||||
beq quitturn1read
|
||||
print "Your password is `6245`."
|
||||
goto end
|
||||
quitturn1read:
|
||||
print "Your password is `9142`."
|
||||
goto end
|
||||
quitturn2:
|
||||
check readmap
|
||||
beq quitturn2read
|
||||
print "Your password is `9999`."
|
||||
goto end
|
||||
quitturn2read:
|
||||
print "Your password is `8888`."
|
||||
goto end
|
||||
|
||||
#The end label is at the end of the file, and serves as a way to skip everything. #
|
||||
#It doesn't necessarily have to be called `end`, but I call it that because that's#
|
||||
#what it is; the end. #
|
||||
end:
|
||||
|
|
@ -0,0 +1,174 @@
|
|||
from sly import Lexer as SlyLexer
|
||||
|
||||
commands = ["goto","print","choose","input","set","testequals","check","beq","bne"]
|
||||
|
||||
class Lexer(SlyLexer):
|
||||
tokens = { STEM, COMMAND, TARGET, STRING, NUMBER, BOOLEAN }
|
||||
ignore = ' \t'
|
||||
|
||||
TARGET = r'([A-Za-z][A-Za-z0-9]*):'
|
||||
|
||||
def TARGET(self,t):
|
||||
t.value = t.value.strip()[:-1]
|
||||
assert t.value not in commands, f"Cannot use name of command {t.value} as branch/goto target"
|
||||
return t
|
||||
|
||||
BOOLEAN = r'(true|false)'
|
||||
|
||||
def BOOLEAN(self,t):
|
||||
t.value = t.value=="true"
|
||||
return t
|
||||
|
||||
COMMAND = '('+'|'.join(commands)+')'
|
||||
STEM = r'([A-Za-z][A-Za-z0-9]*)'
|
||||
|
||||
@_(r'"(?:[^"\\]|\\.)*"')
|
||||
def STRING(self,t):
|
||||
t.value = eval(t.value)
|
||||
return t
|
||||
|
||||
@_(r'\n+')
|
||||
def ignore_newline(self,t):
|
||||
self.lineno+=len(t.value)
|
||||
|
||||
@_(r"[#][^#]+[#]")
|
||||
def ignore_comment(self,t):
|
||||
self.lineno+=t.value.count("\n")
|
||||
|
||||
NUMBER = r'\d+'
|
||||
|
||||
def NUMBER(self,t):
|
||||
t.value = int(t.value)
|
||||
return t
|
||||
|
||||
class DummyToken:
|
||||
def __getattr__(self):
|
||||
return None
|
||||
|
||||
import sys
|
||||
def caller_id():
|
||||
return sys._getframe(2).f_code.co_name
|
||||
|
||||
class Evaluator:
|
||||
def __init__(self): pass
|
||||
def run(self,prog):
|
||||
if type(prog)!=list: prog = list(Lexer().tokenize(prog))
|
||||
self.prog = prog
|
||||
self.pos = 0
|
||||
self.values = dict()
|
||||
self.flag = False
|
||||
while self.pos<len(self.prog):
|
||||
tok = self.prog[self.pos]
|
||||
self.pos+=1
|
||||
if hasattr(self,"do_"+tok.type):
|
||||
try:
|
||||
getattr(self,"do_"+tok.type)(tok)
|
||||
except AssertionError as e:
|
||||
msg = e.args[0]
|
||||
print("Error: "+msg)
|
||||
return
|
||||
else:
|
||||
print(f"Error: invalid state with token {tok.type} ({tok.value!r}) at line {tok.lineno!s}")
|
||||
return
|
||||
def next(self,*types):
|
||||
cmd = caller_id()[len("command_"):]
|
||||
assert self.pos<len(self.prog), f"unexpected EOF after command {cmd}"
|
||||
if not types: types = Lexer.tokens
|
||||
tok = self.prog[self.pos]
|
||||
assert tok.type in types, f"invalid argument type {tok.type} for command {cmd}"
|
||||
self.pos+=1
|
||||
return tok
|
||||
def peek(self):
|
||||
cmd = caller_id()[len("command_"):]
|
||||
try:
|
||||
return self.prog[self.pos]
|
||||
except:
|
||||
return DummyToken()
|
||||
def do_TARGET(self,t):
|
||||
# just needs to be here so TARGET tokens don't cause an error
|
||||
return
|
||||
def do_COMMAND(self,t):
|
||||
if hasattr(self,"command_"+t.value):
|
||||
getattr(self,"command_"+t.value)()
|
||||
else:
|
||||
print(f"Error: unimplemented command {t.value!r} at line {t.lineno!s}")
|
||||
@property
|
||||
def targets(self):
|
||||
targets = {}
|
||||
for i, t in enumerate(self.prog):
|
||||
if t.type=="TARGET":
|
||||
targets[t.value]=i
|
||||
return targets
|
||||
def expand_values(self,s):
|
||||
for key, value in self.values.items():
|
||||
s = s.replace("{{"+key+"}}",str(value))
|
||||
return s
|
||||
def command_goto(self):
|
||||
target = self.next("STEM")
|
||||
assert target.value in self.targets, "Invalid goto target {target.value} at line {target.lineno}!"
|
||||
self.pos = self.targets[target.value]
|
||||
def command_print(self):
|
||||
val = self.next("STRING").value
|
||||
val = self.expand_values(val)
|
||||
print(val)
|
||||
def command_choose(self):
|
||||
choices = dict()
|
||||
while self.peek().type=="STRING":
|
||||
label = self.next("STRING")
|
||||
target = self.next("STEM")
|
||||
assert target.value in self.targets, "Invalid goto target {target.value} in choose statement on line {target.lineno}"
|
||||
choices[label.value]=target.value
|
||||
for i, label in enumerate(choices.keys(),1):
|
||||
print(f"{i}.) {label}")
|
||||
inp = input("? ").strip()
|
||||
try:
|
||||
inp = int(inp)-1
|
||||
assert inp>=0 and inp<len(choices.keys())
|
||||
self.pos = self.targets[choices[list(choices.keys())[inp]]]
|
||||
except: pass
|
||||
def command_input(self):
|
||||
key = self.next("STEM").value
|
||||
prompt = self.next("STRING").value
|
||||
print(self.expand_values(prompt))
|
||||
empty = "You must give a value!"
|
||||
if self.peek().type=="STRING":
|
||||
empty = self.expand_values(self.next("STRING").value)
|
||||
val = input("? ").strip()
|
||||
while not val:
|
||||
print(empty)
|
||||
val = input("? ").strip()
|
||||
self.values[key]=val
|
||||
def command_set(self):
|
||||
key = self.next("STEM").value
|
||||
val = self.next("STRING","NUMBER","BOOLEAN").value
|
||||
self.values[key]=val
|
||||
def command_testequals(self):
|
||||
key = self.next("STEM").value
|
||||
if key not in self.values:
|
||||
self.flag=False
|
||||
return
|
||||
self.flag = self.values[key]==self.next("STRING","NUMBER","BOOLEAN").value
|
||||
def command_check(self):
|
||||
key = self.next("STEM").value
|
||||
if key not in self.values:
|
||||
self.flag=False
|
||||
return
|
||||
assert type(self.values[key])==bool, f"Cannot use check on non-boolean value {self.values[key]!r}!"
|
||||
self.flag = self.values[key]
|
||||
def command_beq(self):
|
||||
target = self.next("STEM")
|
||||
assert target.value in self.targets, f"Invalid branch target {target.value} at line {target.lineno}!"
|
||||
if not self.flag: return
|
||||
self.pos = self.targets[target.value]
|
||||
def command_bne(self):
|
||||
target = self.next("STEM")
|
||||
assert target.value in self.targets, f"Invalid branch target {target.value} at line {target.lineno}!"
|
||||
if self.flag: return
|
||||
self.pos = self.targets[target.value]
|
||||
|
||||
if __name__=="__main__":
|
||||
_, file = sys.argv
|
||||
with open(file) as f:
|
||||
script = f.read()
|
||||
evaluator = Evaluator()
|
||||
evaluator.run(script)
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
input text "Type `foo`." "I didn't say \"type nothing\", I said \"type `foo`\"."
|
||||
#`testequals` tests if a variable is equal to a value.#
|
||||
#In this case, we're testing if the variable `text` is equal to the string "foo".#
|
||||
testequals text "foo"
|
||||
#`beq` will jump to the given target if the comparison is true.#
|
||||
beq yes
|
||||
#`bne` will jump to the given target if the comparison is false.#
|
||||
bne no
|
||||
print "This will never execute."
|
||||
|
||||
no:
|
||||
print "You couldn't even follow that simple direction. Good job."
|
||||
goto end
|
||||
|
||||
yes:
|
||||
print "Congratulations! You actually listened to me!"
|
||||
|
||||
end:
|
||||
|
|
@ -0,0 +1,26 @@
|
|||
#Name prompt, to show off the `input` command. #
|
||||
#`input` has an optional third argument, where it's a string to print if the user doesn't provide any input.#
|
||||
nameprompt:
|
||||
input name "What's your name?" "You need a name to continue. It doesn't even have to be yours!"
|
||||
|
||||
top:
|
||||
print "Well, {{name}}, you find yourself at the top of the mountain."
|
||||
print "How do you get down?"
|
||||
#The `choose` command takes a string and stem for each choice.#
|
||||
#The string is a label, describing the choice, while the stem is the goto target if that choice is chosen.#
|
||||
choose "Cause an avalanche" avalanche "Hike down the mountain like a normal person" hike
|
||||
#If the user doesn't input a valid choice, it falls through, allowing you to handle an invalid choice on your own.#
|
||||
print "That's not a choice!"
|
||||
goto top
|
||||
|
||||
avalanche:
|
||||
print "As the avalanche begins, you very quickly realize that you have no real way of outrunning the avalanche."
|
||||
print "You suffocate to death beneath the snow."
|
||||
print "You failed."
|
||||
goto end
|
||||
|
||||
hike:
|
||||
print "You hike down the mountain like a normal person, and you make it to the bottom unscathed."
|
||||
print "You succeeded."
|
||||
|
||||
end:
|
||||
|
|
@ -0,0 +1 @@
|
|||
sly==0.4
|
||||
Loading…
Reference in New Issue