Add Book object

encyclopaedia/book/__init__.py

@@ -0,0 +1,9 @@
+"""This file is used for documentation and testing.
+
+Ren'Py has no use for it.
+"""
+
+from encyclopaedia.book.book_ren import Book
+
+
+__all__ = ['Book']

encyclopaedia/book/actions_ren.py

@@ -0,0 +1,65 @@
+from typing import TYPE_CHECKING
+
+import renpy.exports as renpy
+from renpy.store import DictEquality
+from renpy.ui import Action
+
+if TYPE_CHECKING:  # pragma: no cover
+    from .book_ren import Book
+
+"""renpy
+init -84 python:
+"""
+
+class BookAction(Action, DictEquality):
+    """Base Action that requires a Book as an argument.
+
+    Should only be used for class inheritance.
+
+    Args:
+        book: The Book instance to use.
+    """
+    def __init__(self, book: 'Book'):
+        self.book = book
+
+
+class BookPreviousPage(BookAction):
+    """Change the current sub-entry being viewed.
+
+    Used to switch from one page to another.
+    """
+    def __call__(self) -> None:
+        """Used by Ren'Py to invoke this Action."""
+        result = self.book.previous_page()
+
+        if result:
+            renpy.restart_interaction()
+
+    def get_sensitive(self) -> bool:
+        """Determine if the button should be alive or not.
+
+        Return:
+            bool: True if the button should be alive, else False.
+        """
+        return not (self.book._unlocked_page_index - 1) < 0
+
+
+class BookNextPage(BookAction):
+    """Change the current sub-entry being viewed.
+
+    Used to switch from one page to another.
+    """
+    def __call__(self) -> None:
+        """Used by Ren'Py to invoke this Action."""
+        result = self.book.next_page()
+
+        if result:
+            renpy.restart_interaction()
+
+    def get_sensitive(self) -> bool:
+        """Determine if the button should be alive or not.
+
+        Return:
+            bool: True if the button should be alive, else False.
+        """
+        return not (self.book._unlocked_page_index + 1) >= len(self.book.unlocked_pages)