Added some Comments.

sprite_stacking_engine/cache.py

@@ -4,9 +4,13 @@ import os
 from sprite_stacking_engine.settings import *
 
 
-class Cache:
+class Cache:  # the engine uses a cache so it doesnt have to calculate everything from start at every frame -
+    #  (the cache also contains all the code for rendering the objects)
     def __init__(self):
-        self.stacked_sprite_cache = {}
+        self.stacked_sprite_cache = {}  # dict to store the sprites in
+
+        # limit angles so it doesnt have to store a sprite for every degree because it doesnt need 360 viewing angles -
+        # for a smooth looking rotation (180 angles is default, it needs half the RAM and still looks smooth)
         self.viewing_angle = 360 // NUM_ANGLES
         self.outline_thickness = 2
         self.get_stacked_sprite_cache()
@@ -22,7 +26,7 @@ class Cache:
             self.run_prerender(object_name, layer_array, attrs)  # render the sprites into one 3d looking sprite
 
         for object_name in ANIMATED_SPRITE_ATTRS:  # loop through all animated sprites and do the same as in the first -
-            self.stacked_sprite_cache[object_name] = {  # loop but for every frame
+            self.stacked_sprite_cache[object_name] = {  # loop but for every frame of the animation
                 "frames": {}
             }