cg gallery wip vol3: basic pagination handler

game/src/cg_gallery.rpy

@@ -5,6 +5,7 @@ init python:
 
     # CONST PARAMS
     GALLERY_COLS = 3
+    GALLERY_CGS_PER_PAGE = 6
     NOT_UNLOCKED_COVER = im.FactorScale("gui/gallery/unlocked_cg_button_cover.png", 0.225, 0.225)
 
     # GALLERY ITEMS
@@ -22,6 +23,7 @@ init python:
         return im.FactorScale("images/cgs/" + fname + ".png", 0.225, 0.225)
 
     # Create an object in g:Gallery, add to galleryItems
+    # (imageName: string; unlocked?: boolean): None
     def addGalleryItem(imageName, unlocked = False):
         g.button(imageName)
         g.image(imageName)
@@ -39,6 +41,7 @@ init python:
     # Reads /images/cgs dir for all .png files
     # Populates g:Gallery and galleryItems
     # Appends extra spaces at the end
+    # (): None
     def loadGallery():
         from os import listdir, getcwd
         from os.path import isfile, join
@@ -62,6 +65,13 @@ init python:
                 "cg": None
             })
 
+    # Returns the pageth slice from galleryItems
+    # (page: int): Partial<typeof galleryItems>
+    def getGalleryPage(page):
+        start = (page - 1) * GALLERY_CGS_PER_PAGE
+        end = start + GALLERY_CGS_PER_PAGE
+        return galleryItems[start:end]
+
     # Call to loading the gallery
     loadGallery()
 
@@ -74,15 +84,16 @@ screen cg_gallery():
     use game_menu(_("Gallery"), scroll="viewport"):
 
         fixed:
-            $ galleryRows = len(galleryItems) / GALLERY_COLS
+            $ pageItems = getGalleryPage(3)
+            $ galleryRows = len(pageItems) / GALLERY_COLS
             grid GALLERY_COLS galleryRows:
 
                 spacing gui.slot_spacing
 
                 # Iterate through galleryItems and add cgs buttons
-                for item in galleryItems:
+                for item in pageItems:
                     if item["item"] == None:
                         # TODO: empty space
-                        add g.make_button(galleryItems[0]["item"], galleryItems[0]["cg"], xalign = 0.5, yalign = 0.5)
+                        add g.make_button(pageItems[0]["item"], pageItems[0]["cg"], xalign = 0.5, yalign = 0.5)
                     else:
                         add g.make_button(item["item"], item["cg"], xalign = 0.5, yalign = 0.5)