189 lines
5.3 KiB
Python
189 lines
5.3 KiB
Python
# Copyright 2004-2019 Tom Rothamel <pytom@bishoujo.us>
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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# This code implements the ability to "warp" to a given location in
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# the Ren'Py source code, given the filename and line number of the
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# location.
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from __future__ import print_function
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import renpy
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warp_spec = None
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def warp():
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"""
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Given a filename and line number, this attempts to warp the user
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to that filename and line number.
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"""
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global warp_spec
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spec = warp_spec
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warp_spec = None
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if spec is None:
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return None
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if ':' not in spec:
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raise Exception('No : found in warp location.')
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filename, line = spec.split(':', 1)
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line = int(line)
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if not renpy.config.developer:
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raise Exception("Can't warp, developer mode disabled.")
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if not filename.startswith("game/"):
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filename = "game/" + filename
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# First, compute for each statement reachable from a scene statement,
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# one statement that reaches that statement.
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prev = { }
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seenset = set(renpy.game.script.namemap.values())
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# This is called to indicate that next can be executed following node.
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def add(node, next): # @ReservedAssignment
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if next not in prev:
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prev[next] = node
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return
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# Try to figure out which node to use.
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old = prev[next]
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def prefer(fn):
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if fn(node, old):
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return node
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if fn(old, node):
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return old
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return None
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n = None
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n = n or prefer(lambda a, b : (a.filename == next.filename) and (b.filename != next.filename))
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n = n or prefer(lambda a, b : (a.linenumber <= next.linenumber) and (b.linenumber > next.linenumber))
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n = n or prefer(lambda a, b : (a.linenumber >= b.linenumber))
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n = n or node
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prev[next] = n
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for n in seenset:
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if isinstance(n, renpy.ast.Translate) and n.language:
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continue
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if isinstance(n, renpy.ast.Menu):
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for i in n.items:
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if i[2] is not None:
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add(n, i[2][0])
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if isinstance(n, renpy.ast.Jump):
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if not n.expression and n.target in renpy.game.script.namemap:
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add(n, renpy.game.script.namemap[n.target])
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continue
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if isinstance(n, renpy.ast.While):
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add(n, n.block[0])
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if isinstance(n, renpy.ast.If):
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seen_true = False
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for condition, block in n.entries:
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add(n, block[0])
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if condition == "True":
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seen_true = True
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if seen_true:
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continue
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if isinstance(n, renpy.ast.UserStatement):
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add(n, n.get_next())
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elif getattr(n, 'next', None) is not None:
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add(n, n.next)
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# Now, attempt to find a statement preceding the line that the
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# user wants to warp to.
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candidates = [ (n.linenumber, n)
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for n in seenset
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if n.filename == filename and n.linenumber <= line
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]
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# We didn't find any candidate statements, so give up the warp.
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if not candidates:
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raise Exception("Could not find a statement to warp to. ({})".format(spec))
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# Sort the list of candidates, so they're ordered by linenumber.
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candidates.sort()
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# Pick the candidate immediately before (or on) the line.
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node = candidates[-1][1]
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# Now, determine a list of nodes to run while getting to this node.
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run = [ ]
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n = node
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while True:
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n = prev.get(n, None)
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if n:
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del prev[n]
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run.append(n)
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else:
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break
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run.reverse()
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run = run[-renpy.config.warp_limit:]
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renpy.config.skipping = "fast"
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# Determine which statements we want to execute, and then run
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# only them.
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for n in run:
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if n.can_warp():
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# Execute, if possible.
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try:
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n.execute()
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except:
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pass
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# Now, return the name of the place where we will warp to. This
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# becomes the new starting point of the game.
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renpy.config.skipping = None
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renpy.game.after_rollback = True
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renpy.exports.block_rollback()
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renpy.game.context().goto_label(node.name)
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renpy.game.context().come_from(node.name, "_after_warp")
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raise renpy.game.RestartContext()
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