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3.
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All data reachable through fields on ``persistent`` is saved when Ren'Py terminates, or when :func:`renpy.save_persistent` is called. Persistent data is loaded when Ren'Py starts, and when Ren'Py detects that the persistent data has been updated on disk.
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(no translation yet)
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Located in
../../source/persistent.rst:12
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4.
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The persistent object is special in that an access to an undefined field will have a None value, rather than causing an exception.
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(no translation yet)
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Located in
../../source/persistent.rst:17
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5.
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An example use of persistent is the creation of an unlockable image gallery. This is done by storing a flag in persistent that determines if the gallery has been unlocked, as in ::
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(no translation yet)
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Located in
../../source/persistent.rst:20
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6.
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When the user gets an ending that causes the gallery to be unlocked, the flag must be set to True. ::
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(no translation yet)
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Located in
../../source/persistent.rst:33
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7.
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As persistent data is loaded before the init code is run, persistent data should only contain types that are native to python or Ren'Py. Alternatively, classes that are defined in ``python early`` blocks can be used, provided those classes can be pickled and implement equality.
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(no translation yet)
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Located in
../../source/persistent.rst:38
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8.
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Merging Persistent Data
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(no translation yet)
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Located in
../../source/persistent.rst:44
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9.
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There are cases where Ren'Py has to merge persistent data from two sources. For example, Ren'Py may need to merge persistent data stored on a USB drive with persistent data from the local machine.
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(no translation yet)
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Located in
../../source/persistent.rst:46
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10.
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Ren'Py does this merging on a field-by-field basis, taking the value of the field that was updated more recently. In some cases, this is not the desired behavior. In that case, the :func:`renpy.register_persistent` function can be used.
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(no translation yet)
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Located in
../../source/persistent.rst:50
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11.
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For example, if we have a set of seen endings, we'd like to take the union of that set when merging data. ::
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(no translation yet)
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Located in
../../source/persistent.rst:55
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12.
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Persistent Functions
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(no translation yet)
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Located in
../../source/persistent.rst:69
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