gravity falls prop

adding code, sound effects and font file for gravity falls prop learn guide

Author: BlitzCityDIY

Gravity_Falls_Memory_Gun/Arial-14.bdf

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+# SPDX-FileCopyrightText: Copyright (c) 2024 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import os
+import board
+import audiocore
+import audiobusio
+from digitalio import DigitalInOut, Direction
+import displayio
+from adafruit_bitmap_font import bitmap_font
+from adafruit_display_text import label
+import adafruit_displayio_ssd1306
+from adafruit_seesaw import seesaw, rotaryio
+import vectorio
+import keypad
+
+#display setup
+displayio.release_displays()
+# enable external power pin
+# provides power to the external components
+external_power = DigitalInOut(board.EXTERNAL_POWER)
+external_power.direction = Direction.OUTPUT
+external_power.value = False
+
+# rotary encoder
+i2c = board.STEMMA_I2C()
+seesaw = seesaw.Seesaw(i2c, addr=0x36)
+encoder = rotaryio.IncrementalEncoder(seesaw)
+last_position = 0
+
+# oled
+oled_reset = board.D9
+display_bus = displayio.I2CDisplay(i2c, device_address=0x3D, reset=oled_reset)
+WIDTH = 128
+HEIGHT = 64
+display = adafruit_displayio_ssd1306.SSD1306(display_bus, width=WIDTH, height=HEIGHT)
+
+# trigger button
+switch = keypad.Keys((board.EXTERNAL_BUTTON,), value_when_pressed=False, pull=True)
+
+# audio!
+wavs = []
+wav_names = []
+for filename in os.listdir('/wavs'):
+    if filename.lower().endswith('.wav') and not filename.startswith('.'):
+        wavs.append("/wavs/"+filename)
+        wav_names.append(filename.replace('.wav', ''))
+audio = audiobusio.I2SOut(board.I2S_BIT_CLOCK, board.I2S_WORD_SELECT, board.I2S_DATA)
+num_wavs = len(wavs)
+wav_index = 0
+# function to open and play the audio files
+def open_audio(num):
+    n = wavs[num]
+    # pylint: disable = consider-using-with
+    f = open(n, "rb")
+    w = audiocore.WaveFile(f)
+    return w
+wave = open_audio(wav_index)
+audio.play(wave)
+
+# make the display context
+splash = displayio.Group()
+display.root_group = splash
+palette = displayio.Palette(1)
+palette[0] = 0xFFFFFF
+rect = vectorio.Rectangle(pixel_shader=palette, width=display.width, height=23, x=6, y=21)
+splash.append(rect)
+font = bitmap_font.load_font("/Arial-14.bdf")
+color = 0xFFFFFF
+text_0 = wav_names[(wav_index - 1) % num_wavs]
+text_area_top_left = label.Label(font, text=text_0, color=color)
+text_area_top_left.anchor_point = (0.0, 0.0)
+text_area_top_left.anchored_position = (6, 0)
+splash.append(text_area_top_left)
+
+text_1 = wav_names[wav_index]
+text_area_middle_left = label.Label(font, text=text_1,color=0x000000)
+text_area_middle_left.anchor_point = (0.0, 0.5)
+text_area_middle_left.anchored_position = (6, display.height / 2)
+splash.append(text_area_middle_left)
+
+text_2 = wav_names[(wav_index+1) % num_wavs]
+text_area_bottom_left = label.Label(font, text=text_2, color=color)
+text_area_bottom_left.anchor_point = (0.0, 1.0)
+text_area_bottom_left.anchored_position = (6, display.height)
+splash.append(text_area_bottom_left)
+
+while True:
+
+    event = switch.events.get()
+    position = encoder.position
+    if position != last_position:
+        if position > last_position:
+            wav_index = (wav_index + 1) % num_wavs
+        else:
+            wav_index = (wav_index - 1) % num_wavs
+        text_area_top_left.text = wav_names[(wav_index-1) % num_wavs]
+        text_area_middle_left.text = wav_names[wav_index]
+        text_area_bottom_left.text = wav_names[(wav_index+1) % num_wavs]
+        last_position = position
+    if event:
+        if event.pressed:
+            external_power.value = True
+            wave = open_audio(wav_index)
+            audio.play(wave)
+        if event.released:
+            external_power.value = False