Implement disk cache for renders

game/scripts/doll/clothes.rpy

@@ -176,6 +176,9 @@ init python:
 
         @functools.cache
         def build_icon(self, hash):
+            if (d := self.get_disk_cache(hash)):
+                return d
+
             matrix = SaturationMatrix(0.0)
             sprites = [i for i in self.build_image(hash, matrix=matrix) if not i[0] == "mask"]
 
@@ -205,7 +208,8 @@ init python:
             if y+h > hmax:
                 y = hmax-h
 
-            return Transform(Fixed(*[i[1] for i in sprites], fit_first=True), crop=(x, y, w, h), size=(96, 96), fit="contain", align=(0.5, 0.5))
+            d = Transform(Fixed(*[i[1] for i in sprites], fit_first=True), crop=(x, y, w, h), size=(256, 256), fit="contain", align=(0.5, 0.5))
+            return self.create_disk_cache(d, hash)
 
         @property
         def icon(self):
@@ -269,7 +273,7 @@ init python:
                 foreground = "#b2000040"
                 hover_foreground = "#CD5C5C40"
 
-            return Button(child=child, focus_mask=None, xysize=(96, 96), background=self.icon, action=action, tooltip=("\n".join(warnings)), foreground=foreground, hover_foreground=hover_foreground, unhovered=unhovered, style=style)
+            return Button(child=child, focus_mask=None, xysize=(96, 96), background=Transform(self.icon, xysize=(96, 96)), action=action, tooltip=("\n".join(warnings)), foreground=foreground, hover_foreground=hover_foreground, unhovered=unhovered, style=style)
 
         @functools.cache
         def build_button(self, _=None):

game/scripts/doll/clothes_dynamic.rpy

@@ -164,6 +164,9 @@ init python:
             else:
                 tracking_object = self.tracking_object
 
+            if (d := self.get_disk_cache(hash)):
+                return d
+
             matrix = SaturationMatrix(0.0)
             sprites = [i for i in self.build_image(hash, matrix=matrix) if not i[0] == "mask"]
 
@@ -192,7 +195,8 @@ init python:
             if y+h > hmax:
                 y = hmax-h
 
-            return Transform(Fixed(*[i[1] for i in sprites], fit_first=True), crop=(x, y, w, h), size=(96, 96), fit="contain", align=(0.5, 0.5))
+            d = Transform(Fixed(*[i[1] for i in sprites], fit_first=True), crop=(x, y, w, h), size=(256, 256), fit="contain", align=(0.5, 0.5))
+            return self.create_disk_cache(d, hash)
 
         def clone(self):
             """Creates a clone of this cloth object. Since it requires a parent object it should be used internally only to avoid object depth issue."""

game/scripts/doll/common.rpy

@@ -71,10 +71,48 @@ init -1 python:
 
         def is_stale(self):
             curr_hash = self.generate_hash()
-            stale = curr_hash != self._hash
+            if (stale := curr_hash != self._hash):
+                self.remove_disk_cache(self._hash)
             self._hash = curr_hash
             return stale
 
+        def create_disk_cache(self, d, hash, size=None, type="img"):
+            width, height = size or self.sizes
+            filepath = os.path.join("cache", type, f"{hash}.png")
+            rendpath = os.path.join("game", filepath)
+            syspath = os.path.join(config.gamedir, "cache", type)
+
+            try:
+                os.makedirs(syspath, exist_ok=True)
+            except OSError as e:
+                print(f"Warning! Failed to create cache directory: {cache_dir} - {e}")
+                return d
+
+            try:
+                if not renpy.loadable(filepath):
+                    renpy.render_to_file(d, rendpath, width=width, height=height, resize=True)
+                return Image(filepath)
+            except Exception as e:
+                print(f"Warning! Failed to return cached file: {filepath} - {e}")
+                return d
+
+        def get_disk_cache(self, hash, type="img"):
+            filepath = os.path.join("cache", type, f"{hash}.png")
+
+            return Image(filepath) if renpy.loadable(filepath) else None
+
+        def remove_disk_cache(self, hash, type="img"):
+            syspath = os.path.join(config.gamedir, "cache", type, f"{hash}.png")
+
+            try:
+                os.unlink(syspath)
+            except FileNotFoundError:
+                print(f"Warning! Cached file {syspath} not found")
+            except PermissionError:
+                print(f"Warning! Permission denied to remove cached file: {syspath}")
+            except Exception as e:
+                print(f"Warning! Failed to remove cached file: {syspath} - {e}")
+
     def DollRebuild():
         for i in states.dolls:
             doll = getattr(store, i)

game/scripts/doll/outfits.rpy

@@ -46,6 +46,9 @@ init python:
 
         @functools.cache
         def build_image(self, hash):
+            if (d := self.get_disk_cache(hash)):
+                return d
+
             from itertools import chain
 
             matrix = SaturationMatrix(0.0)
@@ -79,7 +82,8 @@ init python:
 
             sprites = back_sprites + [x[1] for x in sprites]
 
-            return Fixed(*sprites, fit_first=True)
+            d = Fixed(*sprites, fit_first=True)
+            return self.create_disk_cache(d, hash)
 
         @property
         def image(self):