Merge pull request #1501 from adafruit/star_locket

Adding code and files for Circuit Playground Star Locket learn guide

Author: BlitzCityDIY

Circuit_Playground_Sailor_Moon_Star_Locket/clouds_bg.bmp

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+import time
+import board
+import digitalio
+import displayio
+import audiocore
+from audiopwmio import PWMAudioOut as AudioOut
+import adafruit_imageload
+from adafruit_gizmo import tft_gizmo
+from adafruit_display_shapes.circle import Circle
+
+#  setup for the speaker
+speaker_enable = digitalio.DigitalInOut(board.SPEAKER_ENABLE)
+speaker_enable.switch_to_output(value=True)
+
+#  setup for the CP Bluefruit's buttons
+button_a = digitalio.DigitalInOut(board.BUTTON_A)
+button_a.switch_to_input(pull=digitalio.Pull.DOWN)
+
+button_b = digitalio.DigitalInOut(board.BUTTON_B)
+button_b.switch_to_input(pull=digitalio.Pull.DOWN)
+
+#  setup for the Gizmo TFT
+display = tft_gizmo.TFT_Gizmo()
+
+#  loading the background image
+bg_bitmap, bg_palette = adafruit_imageload.load("/clouds_bg.bmp",
+                                         bitmap=displayio.Bitmap,
+                                         palette=displayio.Palette)
+bg_grid = displayio.TileGrid(bg_bitmap, pixel_shader=bg_palette)
+
+#  loading the crescent moon bitmap sequence
+bitmap, palette = adafruit_imageload.load("/moon_anime.bmp",
+                                         bitmap=displayio.Bitmap,
+                                         palette=displayio.Palette)
+#  makes the black background transparent so we only see the cresent moon
+palette.make_transparent(0)
+
+tile_grid = displayio.TileGrid(bitmap, pixel_shader=palette, width = 1, height = 1,
+                               tile_height = 120, tile_width = 120,
+                               default_tile = 0)
+
+#  two circles for the center "jewel"
+jewel_outline = Circle(x0=120, y0=120, r=40, fill=0xfbf236)
+jewel = Circle(x0=120, y0=120, r=35, fill=0xf70570)
+
+#  adding the two jewel circle elements to a group
+jewel_splash = displayio.Group(max_size=20)
+jewel_splash.append(jewel_outline)
+jewel_splash.append(jewel)
+
+#  making a group for the crescent moon sequence
+#  scale is 2 because at full 240x240 resolution image is too big
+moon_group = displayio.Group(scale = 2)
+#  group to hold all of the display elements
+main_group = displayio.Group()
+
+#  adding the crescent moon tile grid to the moon group
+moon_group.append(tile_grid)
+#  adding the background to the main group
+main_group.append(bg_grid)
+#  adding the moon group to the main group
+main_group.append(moon_group)
+#  adding the jewel circles to the main group
+main_group.append(jewel_splash)
+
+#  showing the main group on the display
+display.show(main_group)
+
+#  setting up the audio output
+speaker = AudioOut(board.SPEAKER)
+#  importing the .wav file
+moonlight = "/moonlight_densetsu.wav"
+#  function to open the .wav file
+data = open(moonlight, "rb")
+#  decoding the .wav file
+wav = audiocore.WaveFile(data)
+
+#  tracks the tilegrid index location for the crescent moon
+moon = 0
+#  holds time.monotonic()
+crescent = 0
+#  a button debouncing
+a_pressed = False
+#  b button debouncing
+b_pressed = False
+#  tracks if music is playing
+music_playing = False
+#  tracks if animation is paused
+animation_pause = False
+
+while True:
+    #  button debouncing
+    if not button_a.value and a_pressed:
+        a_pressed = False
+    if not button_b.value and b_pressed:
+        b_pressed = False
+    #  runs crescent moon animation
+    if not music_playing and not animation_pause:
+        #  every .8 seconds...
+        if (crescent + .8) < time.monotonic():
+            #  the moon animation cycles
+            tile_grid[0] = moon
+            #  moon is the tilegrid index location
+            moon += 1
+            #  resets timer
+            crescent = time.monotonic()
+            #  resets tilegrid index
+            if moon > 35:
+                moon = 0
+    #  if music is NOT playing and you press the a button...
+    if not music_playing and (button_a.value and not a_pressed):
+        #  music begins playing and will loop
+        speaker.play(wav, loop = True)
+        a_pressed = True
+        #  music_playing state is updated
+        music_playing = True
+        #  debugging REPL message
+        print("music playing")
+    #  if music IS playing and you press the a button...
+    if music_playing and (button_a.value and not a_pressed):
+        #  music stops
+        speaker.stop()
+        a_pressed = True
+        #  music_playing state is updated
+        music_playing = False
+        #  debugging REPL message
+        print("music stopped")
+    #  if the animation IS playing and you press the b button...
+    if not animation_pause and (button_b.value and not b_pressed):
+        #  the animation pauses by updating the animation_pause state
+        animation_pause = True
+        b_pressed = True
+        #  debugging REPL message
+        print("animation paused")
+    #  if the animation is PAUSED and you press the b button...
+    if animation_pause and (button_b.value and not b_pressed):
+        #  the animation begins again by updating the animation_pause state
+        animation_pause = False
+        b_pressed = True
+        #  debugging REPL message
+        print("animation running again")