(building) add memoize and update a few baseset presets

I'm still not sure about the idea of providing baseset layouts though...
Feel like they are only useful for demos and Emperor's New Station.

Author: ahyangyi

agrf/lib/building/baseset_layouts.py

@@ -3,8 +3,9 @@
 """
 
 from agrf.lib.building.layout import ALayout
-from agrf.lib.building.baseset_sprites import default_grassland, default_railroad, default_railroad_y
+from agrf.lib.building.baseset_sprites import default_grassland, default_railroad, building_ground
+from agrf.lib.building.symmetry import BuildingSymmetrical, BuildingCylindrical
 
-grassland_tile = ALayout(default_grassland, [], False)
-railroad_tile = ALayout(default_railroad, [], True)
-railroad_y_tile = ALayout(default_railroad_y, [], True)
+grassland_tile = BuildingCylindrical.memoize(ALayout(default_grassland, [], False))
+railroad_tile = BuildingSymmetrical.memoize(ALayout(default_railroad, [], True))
+building_ground_tile = BuildingCylindrical.memoize(ALayout(building_ground, [], False))

agrf/lib/building/baseset_sprites.py

@@ -6,8 +6,8 @@
 
 from agrf.lib.building.layout import ADefaultGroundSprite
 from agrf.lib.building.registers import Registers
+from agrf.lib.building.symmetry import BuildingSymmetrical, BuildingCylindrical
 
-default_grassland = ADefaultGroundSprite(3981, flags={"add": Registers.CLIMATE_OFFSET})
-
-default_railroad = ADefaultGroundSprite(1011, flags={"add": Registers.CLIMATE_RAIL_OFFSET})
-default_railroad_y = ADefaultGroundSprite(1012, flags={"add": Registers.CLIMATE_RAIL_OFFSET})
+default_grassland = BuildingCylindrical.memoize(ADefaultGroundSprite(3981, flags={"add": Registers.CLIMATE_OFFSET}))
+default_railroad = BuildingSymmetrical.memoize(ADefaultGroundSprite(1012, flags={"add": Registers.CLIMATE_RAIL_OFFSET}))
+building_ground = BuildingCylindrical.memoize(ADefaultGroundSprite(1420, flags={"add": Registers.ZERO}))

agrf/lib/building/symmetry.py

@@ -17,6 +17,14 @@ def create_variants(classobj, variants):
             v.symmetry = classobj
         return variants[0]
 
+    # This is a weird method
+    #   Use this when item already have properties `item.R` `item.M` `item.T`, but calling these creates a new object
+    #   memoize() then uses these to create as many new objects as the symmetry needs
+    #   and links them so that future calls to these properties always returns the memoized ones
+    @classmethod
+    def memoize(cls, item):
+        return cls.create_variants(cls.get_all_variants(item))
+
     @property
     def M(self):
         return self._M