(graphics) MapSprite and corresponding helpers

Author: ahyangyi

agrf/graphics/helpers/map.py

@@ -0,0 +1,17 @@
+import grf
+from agrf.graphics import SCALE_TO_ZOOM
+from agrf.graphics.sprites.map import MapSprite
+
+
+def map_alternative_sprites(a, f, name, xofs=0, yofs=0):
+    alts = []
+    for scale in [1, 2, 4]:
+        for bpp in [8, 32]:
+            if (sa := a.get_sprite(zoom=SCALE_TO_ZOOM[scale], bpp=bpp)) is None:
+                continue
+            fs = MapSprite(
+                sa, lambda x, scale=scale, bpp=bpp: f(x, scale, bpp), name, xofs=xofs * scale, yofs=yofs * scale
+            )
+            alts.append(fs)
+
+    return grf.AlternativeSprites(*alts)

agrf/graphics/sprites/map.py

@@ -0,0 +1,27 @@
+import grf
+from agrf.graphics import LayeredImage
+from agrf.graphics.spritesheet import LazyAlternativeSprites
+
+
+THIS_FILE = grf.PythonFile(__file__)
+
+
+class MapSprite(grf.Sprite):
+    def __init__(self, a, f, name, xofs=0, yofs=0):
+        super().__init__(a.w, a.h, zoom=a.zoom, xofs=a.xofs + xofs, yofs=a.yofs + yofs, bpp=a.bpp, crop=a.crop)
+        self.a = a
+        self.f = f
+        self._fname = name
+
+    def get_fingerprint(self):
+        return {"a": self.a.get_fingerprint(), "name": self._fname}
+
+    def get_resource_files(self):
+        return self.a.get_resource_files() + (THIS_FILE,)
+
+    def get_data_layers(self, context):
+        timer = context.start_timer()
+        fa = self.f(LayeredImage.from_sprite(self.a).copy())
+        timer.count_composing()
+
+        return fa.w, fa.h, fa.rgb, fa.alpha, fa.mask