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# Full Changelog

## Ren'Py 6.12.0

### Android Support

Ren'Py now supports the Android platform. This includes support for a large fraction of Ren'Py's functionality, although we were unable to add support for imagedissolves and movie playback. It should be possible to package a Ren'Py game and distribute it through the Android market.

Android support required several changes in Ren'Py:

- The OpenGL renderer has been extended to support OpenGL ES.
- For performance reasons, much of the display system has been rewritten in the Cython language. This also should improve performance on other platforms.
- Support was added for the Android lifecycle. Ren'Py automatically saves when the android device suspends, and reloads (if necessary) upon resume.
- We added the concept of Screen Variants. This allows a single game to have multiple interfaces - such a mouse interface for computer platforms, and a touch interface for Android-based smartphones and tablets.
- We built a system that allows one to package a game separately from Ren'Py. This allows one to build packages without having to set up the Android NDK (you'll still need the Android SDK, Java, Python, Ant, and a lot of patience).

### New Widgets and Displayables

Added the SpriteManager displayable. This provides a high-performance way of drawing many similar sprites to the screen. This can scale to hundreds of particles, provided those particles are mostly similar to each other.

Added the mousearea widget. A mousearea allows hovered and unhovered callbacks to occur when the mouse enters and leaves an area of the screen. Since it doesn't participate in the focus system, a mousearea can include buttons and bars.

Added Drag and Drop widgets and displayables. The drag and drop system can support:

- Windows being repositioned by the user.
- Card games.
- Inventory systems.
- Drag-to-reorder systems.

### Image Prediction

Ren'Py is now better at predicting image usage. Along with predicting images used by normal gameplay, it now attempts to predict images that are used by screens one click away from the user. For example, during normal gameplay, it will predict images on the first screen of the game menu. While at the game menu, it will predict the other screens of the game menu, and also the images the user will see when returning to the main menu. This prediction is automatic, but only occurs when using screens.

Screens may be invoked at any time, in order to allow for image prediction, unless they have a predict property of False. This means that displaying a screen should not have side effects. (Most screens only have side effects when a button is clicked or a bar changed - that's still fine.)

Ren'Py now supports hotspot caching for screen language imagemaps. When `config.developer` is true, Ren'Py will write a PNG file in the game/cache/ directory containing image data for each of the hotspots in the imagemap. If the cache file exists (regardless of the config.developer setting) it will be loaded instead of loading the hotspot images. As the cache file is often much smaller than the size of the hotspot images, it will load faster and reduce image cache pressure, improving game performance. This behavior only applies to screen language imagemaps, and can be disabled with `config.imagemap_cache`.

This should remove most of the need for `renpy.cache_pin()`. While not an error, the use of cache pinning can cause unnecessary memory usage when the wrong image is loaded.

### Screens

Ren'Py now ships with a default set of screens, which are used by the demo and installed by default when a new game is created. You can find them in template/game/screens.rpy, and they can be used by copying that file into your project. These screens are not 100% compatible with the previous layout system - for example, some styles have changed. That's why games must opt-in to them.

The definition of the items parameter of the Choice and NVL screens has changed, and games will need to be updated to work with the new version.

Character arguments beginning with `show_` are passed to the Say screen. This allows things like show_side_image and show_two_window to work with screens. The screens we ship support these options.

The new `config.imagemap_auto_function` variable allows the game-maker to control the interpretation of the `auto` property of imagemaps and imagebuttons.

The imagemap caching behavior described above applies only to screens.

The `FilePageName()` and `FileSlotName()` functions make it easier to name slots

### Other Improvements

Ren'Py 6.12 includes a number of other improvements:

- We've continued writing the new manual. Notably, we have rewritten the documentation for displayables.
- When taking a screenshot, `config.screenshot_callback` is called. The default implementation of this function notifies the user of the location of the screenshot.
- The `Solid()` and `Frame()` displayables are now tiny and no longer take up (much) space in the image cache.
- We now create a log.txt file, which replaces the old opengl.txt, and can log other subsystems.
- Several missing properties have been added to the screen language.
- Ren'Py now treats filenames as if they were case-insensitive. This means that filename mismatches on Linux should no longer be a problem.

### Bug Fixes

- launchpad bug 680266 - Ensures that dynamic displayables update before Transforms that use them.
- launchpad bug 683412 - Do not crash if a shader fails to compile.
- Fixed a bug that caused Ren'Py to crash when the system volume was lowered to 0, but not muted.
- Fixed a bug that prevented `Render.canvas()` from working with the OpenGL renderer.

## Ren'Py 6.11.2

### New Features

This release includes four new themes, generously contributed by Aleema. You can see and change to these new themes by clicking the "Choose Theme" button in the launcher.

### Software Update

The jEdit text editor included with Ren'Py has been updated to version 4.3.2, a supported version that should be able to run most plugins.

### Behavior Changes

The maximum default physical size of the Ren'Py window is now 102 pixels smaller than the height of the screen. This should prevent Ren'Py from creating windows that can't be resized since they are much bigger than the screen.

Buttons now only pass key events to their children when they are focused. This allows a screen language key statement to be used as the child of a button, and only activate when the button is focused.

MoveTransition was rewritten to correctly deal with cases in which images changed their order. This may lead to differences in behavior from the old version, where the ordering was undefined.

### Bug fixes

Fixed launchpad bug 647686, a regression that prevented sounds from looping properly.

Fixed launchpad bug 661983, which caused insensitive hotspots to default to the idle, rather than ground, image when no insensitive image was supplied.

Fixed launchpad bug 647324, where ImageDissolves are rendered as if specified with alpha=True whether or not alpha=True was set.

Fixed a problem that caused the game to start when picking "No" after clicking the (window-level) quit button.

Fixed a problem that prevented AnimatedValue from functioning properly when delay was not 1.0. Thanks to Scout for the fix.

Fixed a problem that caused movies to display incorrectly when the screen was scaled using OpenGL scaling.

## Ren'Py 6.11.1

### New Features

Add the `AlphaBlend()` displayable and the `AlphaDissolve()` transition. These take two displayables, and use the alpha channel of a third displayable to blend them together. (The third displayable is often an animation, allowing the effect to change over time.)

The new Modes system allows one to invoke callbacks when switching from one type of interaction to another. This can be used, for example, to automatically hide the window before transitions.

Imagemaps created using the screen language now only have a size equal to that of their ground image. (Previously, they took up the entire screen.) This change makes it easier to position an imagemap at a different location on screen, such as the bottom.

Imagemaps now take an alpha argument. If true (the default), hotspots are only focused if the mouse is over a non-transparent part of the idle or hover image. If set to false, the hotspot is focused whenever the mouse is within its boundaries.

Added the `renpy.focus_coordinates()` function, which returns the coordinates of the currently focused displayable, when possible.

The new `renpy.notify()` function and `Notify()` action make it simple to flash small status messages on the screen, such as might be used to notify the user of a completed quicksave or screenshot.

The new `HideInterface()` action allows the interface to temporarily be hidden, as a screen language action.

The developer menu now includes a command that will list all the files in the game directory.

The urllib and urllib2 modules from the Python standard library are now distributed as part of Ren'Py. These modules allow data to be retrieved from web servers.

The launcher now includes an experimental updater, that makes it easier to update to the latest pre-release. Hitting shift+U at the launcher's main screen will cause Ren'Py to be updated.

### Fixes

`MoveTransition()` now respects the xoffset and yoffset parameters.

Fixed several bugs with screen-language imagemaps.

Fixed a bug (#626303) that was caused by an incorrect texture unit check. Thanks to tmrwiz for the fix.

Transforms no longer cause a divide by zero exception when the zoom, xzoom, or yzoom properties are 0.

Clockwise and counterclockwise revolution in transforms now works.

Fixed a bug with scaling, that occured when switching between the scaled software and GL renderers.

Hidden screens are no longer considered when assigning default focus.

FieldValues with max_is_zero set to True now work properly. Thanks to SleepKirby for the fix.

## Ren'Py 6.11.0

### OpenGL Support

Ren'Py will now take advantage of a computer's OpenGL hardware acceleration, if supported. This OpenGL support has several user-visible changes:

- The window containing a Ren'Py game can be resized or maximized, using standard window controls. When the window's aspect ratio does not match the game's aspect ratio, black bars will be added.
- Displaying in full-screen mode should not change the monitor's resolution. This will prevent the game from being distorted when displayed on a monitor with a different aspect ratio.
- Unless disabled in the video driver configuration, Ren'Py will use vertical blank synchronization, eliminating image tearing.
- GPU rendering is used, which should make drawing the screen faster in most circumstances.

Software rendering is still supported, and Ren'Py will automatically fall back to software rendering if it detects an improperly configured video card.

You can test that Ren'Py is in OpenGL mode by attempting to resize the window. If it's resizable, it's OpenGL, otherwise, software rendering is being used.

### Screens and Screen Language

This release introduces a new screen system, which allows one to use the new screen language to declaratively specify portions of the user interface. The screen language supersedes layouts, overlay functions, imagemaps, and most other means of customizing the out-of-game menus and the in-game screens.

The previous way of customizing the behavior of the game menu, the layout system, had problems, especially when using imagemap layouts. Screens were single-purpose, and it would be difficult to (for example) load a quick-save game from the main menu, without extensive Python code.

The screen system addresses this by providing a pool of functionality, in the form of Actions and BarValues. This makes it possible to pick and choose functionality, and add it to screens as is deemed necessary.

### Transform Changes

- 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.

- The new config.default_transform variable allows a transform to specify the initial transform properties of an image that does not have a more specific transform applied to it. Its default value is center, a transform that shows the image at the center-bottom of the screen.

  This can lead to a behavior change. When an image is shown, and then shown transforms, the transform will be initialized to the bottom center of the screen, not the top-left. The reset transform can be used to reset the position to the top-left.

- Transform (and ui.transform) have been changed so that their arguments can now be prefixed with a style prefix. One can write ui.transform(idle_rotate=30, hover_rotate=90) and have it work.

- Added the rotate_pad transform property, which controls how Transform pads rotated displayables. When set to False, _not_ the default, it's now possible to rotate a (100, 50) displayable by 90 degrees, and have the result be (50, 100) in size.

### Other Changes

- The Ren'Py documentation is in the process of being rewritten. This changelog is now being maintained as part of the Ren'Py documentation.

- Added support for composite style properties, that allow several style properties to be set using a single parameter. The new composite style properties are:

  - pos - takes a pair, and uses it to set xpos and ypos.
  - anchor - takes a pair, and uses it to set xanchor and yanchor.
  - align - takes a pair, and uses it to set xalign and yalign. (And hence xpos, ypos, xanchor, and yanchor.)
  - area - take (x, y, height, width) pair, and tries to set properties such that the displayable will be placed inside the rectangle. This sets the xpos, ypos, xanchor, yanchor, xfill, yfill, xminimum, yminimum, xmaximum, and ymaximum properties.

- ui.add can now take transform properties as keyword arguments. If at least one transform property is present, ui.add will create a transform that wraps the displayable it's adding to the screen.

- The new `LiveTile()` displayable tiles its child, without consuming a large amount of memory to do so.

- `config.quit_action` allows one to specify an action that is run when the quit button (in the corner of the window) is pressed. config.game_menu_action allows one to specify an action that is run when entering the game menu.

- The `config.screenshot_crop` configuration variable controls the area of the screen that it stored when the user presses the screenshot key.

- The `renpy.music.register_channel()` method now has two additional parameters, file_prefix and file_suffix. These are prepended and appended to filenames provided to the registered channel, respectively.

- The new `renpy.list_files()` method returns a list of files in the game directory and archives. This can be used to write your own automatic image loading method, among other things.

- The interaction between Character and Text has been rewritten to ensure that text is only tokenized once. This required changing a few of the methods on ADVCharacter and NVLCharacter, so code that inherits from those classes should be checked.

- The distribution code has been moved into launcher/distribute.py. This file can be run from the command line to build distributions in shell scripts and other automated processes.

- When there are transparent areas on the screen, and `config.developer` is true, the transparent areas are filled with a checkerboard pattern.

- The new `input`, `side`, `grid`, and `fixed` styles were created, and the corresponding displayables use them by default.

- When a style is accessed at init-time, and doesn't exist, we divide it into two parts at the first underscore. If the second part corresponds to an existing style, we create a new style instead of causing an error.

- The python compiler has been rewritten to use the python ast module. This should both improve performance, and improve error handling for python syntax.

  Because of this change, Ren'Py now ships with and requires Python 2.6.

- The following numbered bugs were fixed:

  - 520276 - ctc does not appear when cps interrupted
  - 526297 - im.Rotozoom()s crash when Ren'Py is scaled down. (Thanks to Spiky Caterpillar for the bug report and fix.)
  - 543785 - Launcher bug on select Projects Directory
  - 583112 - rollback while a movie displayable is shown leaves a video frame onscreen
  - 595532 - Wrong text in tutorial game. (Thanks to Viliam Búr.)

- The following other bugs were fixed:

  - Renamed the internal show and hide methods of Displayable, so those names can once again be used by user-defined displayables.
  - Rewrote MultipleTransition (which is used by Fade) to fix some problems it was exhibiting.
  - Take the condition parameter to Character into account when determining if an nvl clear occurs before the next interaction.

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