Incompatible Changes link

This is a list of changes that may require intervention in the form of changes to scripts or your development environment. Our intent is that all other changes should not affect existing scripts.

Note that setting config.script_version will cause many of these changes to be reverted, at the cost of losing access to recent features.

Incompatible changes to the GUI are documented at Incompatible GUI Changes, as such changes only take effect when the gui is regenerated. link

Ren'Py will no longer search for system-installed fonts when in developer mode. If you game was using a system installed font, the font file should be copied into the game/ directory. (But please make sure that this is compatible with the font file's license.)

6.99.11 link

The order of exection of style and translate statements has changed, as documented in the changelog. To revent this change, add the code:

define config.new_translate_order = False

Note that reverting this change may prevent the new GUI from working.

The config.quit_action variable has changed it's default to one that cause the quit prompt to be displayed of the in-game context. To revert to the old behavior, add the code:

define config.quit_action = ui.gamemenus("_quit_prompt")

Ren'Py now enforces maximum sizes given to buttons and windows. To disable this behavior, add the code:

define config.enforce_window_max_size = False

6.99.9 link

Ren'Py now plays interface sounds on a channel named "audio", that supports multiple sound playback at once. This channel might not have the same settings as a customized sound channel. The audio channel settings can be changed by adjusting config.auto_channels, or the sound channel can be used by adding the code:

define config.play_channel = "sound"

6.99.2 link

Ren'Py will now scan the an image directory (the directory named images underneath the game directory) for images, and define them based on their filename. To disable this behavior, use the code:

init python:
    config.image_directory = None

6.18 link

The show screen and call screen statements may now evaluate their arguments as part of the screen prediction process. If evaluating the arguments to a screen causes side effects to occur, the show screen or call screen statements should be given the new nopredict clause, which prevents prediction.

Screens now participate in transitions - transitions now go from the old state of the screen to the new state. To disable this, set config.transition_screens to false.

Ren'Py no longer uses structural equality to transfer state (for example, the state of a transform) when a screen replaces a screen with the same tag. Instead, the use statement now supports an id property, which can be used to explicitly transfer state.

6.16 link

The meaning of the loop parameter to MusicRoom() has changed. To get the old behavior, set both loop and single_track to true.

6.15.7 link

Ren'Py now expects auto-forward mode to be controlled by the "auto-forward" Preference(). To have it controlled by the auto-forward mode slider, set config.default_afm_enable to None.

6.14 link

Previously, Ren'Py moved archived files into the archived/ directory. It would search this directory automatically when running a game or building archives. One-click builds make this unnecessary, and files in archived/ should be moved back into the game directory.

MoveTransition() has changed its interface. The old version of MoveTransition can be accessed as OldMoveTransition, if you don't want to rewrite your code. (The changes only matter if you use factories with MoveTransition.)

Transform() has changed its behavior with regards to asymmetrically scaled and rotated images. It's unlikely the old behavior was ever used.

6.13.8 link

Old-style string interpolation has been re-enabled by default. If you wrote code (between 6.13 and 6.13.7) that uses % in say or menu statements, you should either write %% instead, or include the code:

init python:
    config.old_substitutions = False

6.13 link

The changes to text behavior can affect games in development in many ways. The biggest change is the introduction of new-style (square-bracket) text substitutions, and the elimination of old-style (percent-based) substitutions. These changes can be reverted with the code:

init python:
    config.old_substitutions = True
    config.new_substitutions = False

New- and old-style substitutions can coexist in the same game, by setting both variables to True.

Ren'Py has also changed the default line-wrapping behavior. While the new behavior should never increase the number of lines in a paragraph, it may change which words fall on each line. To restore the old behavior, add the code:

init python:
    style.default.layout = "greedy"
    style.default.language = "western"

A bug with negative line_spacing was fixed. This fix can cause blocks of text to shrink in height. To revert to the old behavior, use:

init python:
    config.broken_line_spacing = True

Finally, the new text code may lead to artifacts when displaying slow text, especially in conjunction with a negative line spacing. Consider adjusting line_overlap_split to fix this.

6.12.1 link

Image names have changed from being static names to being attribute-based. This can lead to image names that were previously distinct becoming ambiguous. To disable attribute-based image names, set config.image_attributes to False.

Showing an image without providing a transform or ATL block will now continue the previous transform that the image was using. This means that a moving image may continue moving once it has changed. To revert to the old behavior, set config.keep_running_transform to False.

The image argument to Character() has changed meaning. While the old meaning was unsupported in the screens-based environment, it can be restored for compatibility purposes by setting config.new_character_image_argument to False.

6.12.0 link

The definition of the items parameter of the Choice and nvl_choice screens has changed. The nvl_choice screen is deprecated in favor of the NVL screen.

Screens may be invoked at any time, in order to allow for image prediction, unless they have a predict property of False. When the predict property is not False, screens should not cause side effects to occur upon their initial display.

For performance reason, Ren'Py now ignores the position properties of ImageReferences. This means that the position properties of style.image_placement are now ignored. To revert to the old behavior, set config.imagereference_respects_position to True.

6.11.1 link

MoveTransition has been modified to respect the xoffset and yoffset parameters of the displayables it is moving. The factory functions that are used for movement now take xoffset and yoffset parameters. While the built-in movement factories take these parameters without problem, user-defined factories may need to be upgraded to use or ignore these additional parameters.

6.11.0 link

  • The transform specified by the config.default_transform variable is used to initialize the transform properties of images shown using the show and hide statements. The default value of this transform sets xpos and xanchor to 0.5, and ypos and yanchor to 1.0.

    This represents a change in the default value of these style properties, which were previously uninitialized and hence defaulted to 0.

    By including the reset transform in ATL transforms, these properties can be reset back to 0. Alternatively, one can stop using the default transform, and revert to the old behavior, using the code:

    init python:
        style.image_placement.xpos = 0.5
        style.image_placement.ypos = 1.0
        style.image_placement.xanchor = 0.5
        style.image_placement.yanchor = 1.0
        config.default_transform = None
  • If a transform does not define one of the position properties xpos, ypos, xanchor, or yanchor, that property will be taken from the transform's child, if the defines that property.

    This makes it possible to have one transform control a displayable's vertical motion, and the other control the horizontal. But this is incompatible with previous behavior, and so can be disabled with the config.transform_uses_child_position variable.

    init python:
        config.transform_uses_child_position = False

6.10.0 link

  • The default positions (left, right, center, truecenter, offscreenleft, and offscreenright) are now defined as ATL transforms. This means that showing an image at such a position will cause the position to be remembered. If you do not want this behavior, you need to redefine these positions, by adding the code:

    define left = Position(xalign=0.0)
    define center = Position(xalign=0.5)
    define truecenter = Position(xalign=0.5, yalign=0.5)
    define right = Position(xalign=1.0)
    define offscreenleft = Position(xpos=0.0, xanchor=1.0)
    define offscreenright = Position(xpos=1.0, xanchor=0.0)

6.9.2 link

  • To migrate your game from Ren'Py 6.9.2 or later, copy the directory containing your game into your projects directory. You can choose a projects directory by clicking "Options", "Projects Directory" in the Launcher. Please see the Ren'Py 6.9.2 release notes for information about migrating from older releases.