Merge pull request adafruit#964 from caternuson/dreidel

Add dreidel code

Author: ladyada

TFT_Gizmo_Dreidel/dreidel.py

@@ -0,0 +1,69 @@
+import time
+import random
+import displayio
+import adafruit_imageload
+from adafruit_circuitplayground.bluefruit import cpb
+from adafruit_gizmo import tft_gizmo
+
+#pylint: disable=bad-continuation
+# define melody to play while spinning (freq, duration)
+melody = (
+#      oh       drei       del      drei      del
+    (330, 8), (392, 8), (330, 8), (392, 8), (330, 8),
+#     drei       del         I       made      it
+    (392, 8), (330, 16), (330, 8), (392, 8), (392, 8),
+#     out        of       clay
+    (349, 8), (330, 8), (294, 16), (0, 8),
+#      oh       drei       del      drei      del
+    (294, 8), (349, 8), (294, 8), (349, 8), (294, 8),
+#     drei        del      then      drei      del
+    (349, 8), (294, 16), (294, 8), (392, 8), (349, 8),
+#       I       shall      play
+    (330, 8), (294, 8), (262, 16),
+)
+melody_tempo = 0.02
+#pylint: enable=bad-continuation
+
+# setup TFT Gizmo and main display group (splash)
+display = tft_gizmo.TFT_Gizmo()
+splash = displayio.Group()
+display.show(splash)
+
+# load dreidel background image
+dreidel_bmp, dreidel_pal = adafruit_imageload.load("/dreidel_background.bmp",
+                                                   bitmap=displayio.Bitmap,
+                                                   palette=displayio.Palette)
+dreidel_tg = displayio.TileGrid(dreidel_bmp, pixel_shader=dreidel_pal)
+splash.append(dreidel_tg)
+
+# load dreidel symbols (sprite sheet)
+symbols_bmp, symbols_pal = adafruit_imageload.load("/dreidel_sheet.bmp",
+                                                   bitmap=displayio.Bitmap,
+                                                   palette=displayio.Palette)
+for index, color in enumerate(symbols_pal):
+    if color == 0xFFFF01:
+        symbols_pal.make_transparent(index)
+symbols_tg = displayio.TileGrid(symbols_bmp, pixel_shader=symbols_pal,
+                                width = 1,
+                                height = 1,
+                                tile_width = 60,
+                                tile_height = 60)
+symbols_group = displayio.Group(scale=2, x=60, y=70)
+symbols_group.append(symbols_tg)
+splash.append(symbols_group)
+
+# dreidel time!
+tile = 0
+while True:
+    # wait for shake
+    while not cpb.shake():
+        pass
+    # play melody while "spinning" the symbols
+    for note, duration in melody:
+        symbols_tg[0] = tile % 4
+        tile += 1
+        cpb.play_tone(note, duration * melody_tempo)
+    # land on a random symbol
+    symbols_tg[0] = random.randint(0, 3)
+    # prevent immediate re-shake
+    time.sleep(2)