#!/usr/bin/env python3
+# SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
+# SPDX-License-Identifier: BSD-2-Clause
+"""\
+usage: make_graph.py [-a] [-d] [-m] [-s] [-v]
-# Make a DOT graph of the dungeon
-#
-# Copyright (c) 2017 by Eric S. Raymond
-# SPDX-License-Identifier: BSD-2-clause
+Make a DOT graph of Colossal Cave.
+
+-a = emit graph of entire dungeon
+-d = emit graph of maze all different
+-f = emit graph of forest locations
+-m = emit graph of maze all alike
+-s = emit graph of non-forest surface locations
+-v = include internal symbols in room labels
+"""
+
+# pylint: disable=consider-using-f-string,line-too-long,invalid-name,missing-function-docstring,multiple-imports,redefined-outer-name
+
+import sys, getopt, yaml
-import sys, yaml
def allalike(loc):
"Select out loci related to the Maze All Alike"
- return (loc == "LOC_MISTWEST") or ("ALIKE" in loc) or ("MAZEEND" in loc) or ("STALACTITE" in loc)
+ return location_lookup[loc]["conditions"].get("ALLALIKE")
+
+
+def alldifferent(loc):
+ "Select out loci related to the Maze All Alike"
+ return location_lookup[loc]["conditions"].get("ALLDIFFERENT")
+
+
+def surface(loc):
+ "Select out surface locations"
+ return location_lookup[loc]["conditions"].get("ABOVE")
+
+
+def forest(loc):
+ return location_lookup[loc]["conditions"].get("FOREST")
+
def abbreviate(d):
- m = {"NORTH":"N", "EAST":"E", "SOUTH":"S", "WEST":"W", "UPWAR":"U", "DOWN":"D"}
+ m = {
+ "NORTH": "N",
+ "EAST": "E",
+ "SOUTH": "S",
+ "WEST": "W",
+ "UPWAR": "U",
+ "DOWN": "D",
+ }
return m.get(d, d)
+
+def roomlabel(loc):
+ "Generate a room label from the description, if possible"
+ loc_descriptions = location_lookup[loc]["description"]
+ description = ""
+ if debug:
+ description = loc[4:]
+ longd = loc_descriptions["long"]
+ short = loc_descriptions["maptag"] or loc_descriptions["short"]
+ if short is None and longd is not None and len(longd) < 20:
+ short = loc_descriptions["long"]
+ if short is not None:
+ if short.startswith("You're "):
+ short = short[7:]
+ if short.startswith("You are "):
+ short = short[8:]
+ if (
+ short.startswith("in ")
+ or short.startswith("at ")
+ or short.startswith("on ")
+ ):
+ short = short[3:]
+ if short.startswith("the "):
+ short = short[4:]
+ if short[:3] in {"n/s", "e/w"}:
+ short = short[:3].upper() + short[3:]
+ elif short[:2] in {"ne", "sw", "se", "nw"}:
+ short = short[:2].upper() + short[2:]
+ else:
+ short = short[0].upper() + short[1:]
+ if debug:
+ description += "\\n"
+ description += short
+ if loc in startlocs:
+ description += "\\n(" + ",".join(startlocs[loc]).lower() + ")"
+ return description
+
+
+# A forwarder is a location that you can't actually stop in - when you go there
+# it ships some message (which is the point) then shifts you to a next location.
+# A forwarder has a zero-length array of notion verbs in its travel section.
+#
+# Here is an example forwarder declaration:
+#
+# - LOC_GRUESOME:
+# description:
+# long: 'There is now one more gruesome aspect to the spectacular vista.'
+# short: !!null
+# maptag: !!null
+# conditions: {DEEP: true}
+# travel: [
+# {verbs: [], action: [goto, LOC_NOWHERE]},
+# ]
+
+
+def is_forwarder(loc):
+ "Is a location a forwarder?"
+ travel = location_lookup[loc]["travel"]
+ return len(travel) == 1 and len(travel[0]["verbs"]) == 0
+
+
+def forward(loc):
+ "Chase a location through forwarding links."
+ while is_forwarder(loc):
+ loc = location_lookup[loc]["travel"][0]["action"][1]
+ return loc
+
+
+def reveal(objname):
+ "Should this object be revealed when mapping?"
+ if "OBJ_" in objname:
+ return False
+ if objname == "VEND":
+ return True
+ obj = object_lookup[objname]
+ return not obj.get("immovable")
+
+
if __name__ == "__main__":
- with open("adventure.yaml", "r") as f:
+ with open("adventure.yaml", "r", encoding="ascii", errors="surrogateescape") as f:
db = yaml.safe_load(f)
- print("digraph G {")
+ location_lookup = dict(db["locations"])
+ object_lookup = dict(db["objects"])
+
+ try:
+ (options, arguments) = getopt.getopt(sys.argv[1:], "adfmsv")
+ except getopt.GetoptError as e:
+ print(e)
+ sys.exit(1)
+
+ subset = allalike
+ debug = False
+ for (switch, val) in options:
+ if switch == "-a":
+ # pylint: disable=unnecessary-lambda-assignment
+ subset = lambda loc: True
+ elif switch == "-d":
+ subset = alldifferent
+ elif switch == "-f":
+ subset = forest
+ elif switch == "-m":
+ subset = allalike
+ elif switch == "-s":
+ subset = surface
+ elif switch == "-v":
+ debug = True
+ else:
+ sys.stderr.write(__doc__)
+ raise SystemExit(1)
+
+ startlocs = {}
+ for obj in db["objects"]:
+ objname = obj[0]
+ location = obj[1].get("locations")
+ if location != "LOC_NOWHERE" and reveal(objname):
+ if location in startlocs:
+ startlocs[location].append(objname)
+ else:
+ startlocs[location] = [objname]
+
+ # Compute reachability, using forwards.
+ # Dictionary key is (from, to) iff its a valid link,
+ # value is corresponding motion verbs.
+ links = {}
+ nodes = []
for (loc, attrs) in db["locations"]:
- if not allalike(loc):
- continue
+ nodes.append(loc)
travel = attrs["travel"]
if len(travel) > 0:
for dest in travel:
continue
action = dest["action"]
if action[0] == "goto":
- arc = "%s -> %s" % (loc[4:], action[1][4:])
- label=",".join(verbs).lower()
- if len(label) > 0:
- arc += ' [label="%s"]' % label
- print(" " + arc)
- print("}")
+ dest = forward(action[1])
+ if not (subset(loc) or subset(dest)):
+ continue
+ links[(loc, dest)] = verbs
+
+ neighbors = set()
+ for loc in nodes:
+ for (f, t) in links:
+ if f == "LOC_NOWHERE" or t == "LOC_NOWHERE":
+ continue
+ if (f == loc and subset(t)) or (t == loc and subset(f)):
+ if loc not in neighbors:
+ neighbors.add(loc)
+ print("digraph G {")
+
+ for loc in nodes:
+ if not is_forwarder(loc):
+ node_label = roomlabel(loc)
+ if subset(loc):
+ print(' %s [shape=box,label="%s"]' % (loc[4:], node_label))
+ elif loc in neighbors:
+ print(' %s [label="%s"]' % (loc[4:], node_label))
+
+ # Draw arcs
+ for (f, t) in links:
+ arc = "%s -> %s" % (f[4:], t[4:])
+ label = ",".join(links[(f, t)]).lower()
+ if len(label) > 0:
+ arc += ' [label="%s"]' % label
+ print(" " + arc)
+ print("}")
+# end
projects / open-adventure.git / blobdiff