Merge pull request #768 from isaacwellish/pyportal-trivia-time

PyPortal Trivia Time

Author: ladyada

PyPortal_Trivia_Time/code.py

@@ -0,0 +1,174 @@
+"""
+This example uses the Open Trivia Database API to display multiple choice trivia questions.
+Tap the screen to start, then a question will appear and a 30 second timer will start.
+The first player to hit their button will get 10 seconds to answer.
+Hit button again to reveal answer. Tap screen to move to next question.
+This program assumes two buttons are attached to D3 and D4 on the Adafruit PyPortal.
+"""
+
+import time
+import random
+import board
+from adafruit_pyportal import PyPortal
+from digitalio import DigitalInOut, Direction, Pull
+from adafruit_display_text import label
+from adafruit_bitmap_font import bitmap_font
+
+# initialize harware
+led = DigitalInOut(board.L) # For debugging
+led.direction = Direction.OUTPUT
+button1 = DigitalInOut(board.D4)
+button2 = DigitalInOut(board.D3)
+button1.direction = Direction.INPUT
+button2.direction = Direction.INPUT
+button1.pull = Pull.UP
+button2.pull = Pull.UP
+display = board.DISPLAY
+
+# determine the current working directory
+# needed so we know where to find files
+cwd = ("/"+__file__).rsplit('/', 1)[0]
+
+# Set up where we'll be fetching data from
+DATA_SOURCE = "https://opentdb.com/api.php?amount=1&type=multiple"
+Q_LOCATION = ['results', 0, 'question']
+WA_LOCATION1 = ['results', 0, 'incorrect_answers', 0]
+WA_LOCATION2 = ['results', 0, 'incorrect_answers', 1]
+WA_LOCATION3 = ['results', 0, 'incorrect_answers', 2]
+CA_LOCATION = ['results', 0, 'correct_answer']
+
+# Text info
+trivia_font = bitmap_font.load_font("/fonts/Arial-ItalicMT-17.bdf")
+
+loading_color = 0x8080FF
+loading_position = (100,120)
+loading_text_area = label.Label(trivia_font, max_glyphs=30, color=loading_color,
+                                x=loading_position[0], y=loading_position[1])
+
+q_color = 0x8080FF
+q_position = (25, 70)
+q_text_area = label.Label(trivia_font, max_glyphs=120,
+                          x=q_position[0], y=q_position[1],
+                          color=q_color, line_spacing = 1)
+
+answer_choices = ("A","B","C","D")
+a_positions = ((25, 135), (25, 155), (25, 175), (25, 195))
+a_color = 0xFFFFFF
+ans_text_areas = []
+for answernum in range(4):
+    ans_text_areas.append(label.Label(trivia_font, max_glyphs=80,
+                                      color=a_color, line_spacing = 1.5,
+                                      x=a_positions[answernum][0],
+                                      y=a_positions[answernum][1]))
+
+reveal_position = (25, 75)
+reveal_text_area = label.Label(trivia_font, max_glyphs=120, color=loading_color,
+                               x=reveal_position[0], y=reveal_position[1])
+
+timer_position = (25, 215)
+timer_color = 0xFF00FF
+timer_text_area = label.Label(trivia_font, max_glyphs=20, color=timer_color,
+                              x=timer_position[0], y=timer_position[1])
+
+# A function to shuffle trivia questions
+def shuffle(aList):
+    for i in range(len(aList)):
+        j = random.randint(0, len(aList)-1)
+        # Swap arr[i] with the element at random index
+        aList[i], aList[j] = aList[j], aList[i]
+    return aList
+
+# convert html codes to normal text
+def unescape(s):
+    s = s.replace(""", "''")
+    s = s.replace("'", "'")
+    s = s.replace("&", "&")
+    return s
+
+# A function to handle the timer and determine which player answers first
+def faceOff(timerLength):
+    timer_text = str(timerLength) + " seconds!"
+    timer_text_area.text = ''
+    timer_text_area.text = str(timer_text)
+    timerStart = time.monotonic()
+    while time.monotonic() - timerStart < timerLength:
+        if button1.value:
+            led.value = False # For debugging
+        else: # If button 1 pressed, print player 1 on screen and exit function
+            led.value = True # For debugging
+            q_text_area.text = ''
+            reveal_text_area.text = "Player 1!"
+            break
+        if button2.value:
+            led.value = False # For debugging
+        else: # If button 2 pressed, print player 2 on screen and exit function
+            led.value = True # For debugging
+            q_text_area.text = ''
+            reveal_text_area.text = "Player 2!"
+            break
+        time.sleep(0.05)  # debounce delay
+    else: # Timer runs out
+        q_text_area.text = ''
+        reveal_text_area.text = "Times up!"
+
+# PyPortal constructor
+pyportal = PyPortal(url=DATA_SOURCE,
+                    json_path=(Q_LOCATION, CA_LOCATION, WA_LOCATION1, WA_LOCATION2, WA_LOCATION3),
+                    status_neopixel=board.NEOPIXEL,
+                    default_bg=cwd+"/trivia_title.bmp")
+
+pyportal.preload_font() # speed things up by preloading font
+
+pyportal.splash.append(loading_text_area) #loading...
+pyportal.splash.append(q_text_area)
+pyportal.splash.append(reveal_text_area)
+pyportal.splash.append(timer_text_area)
+for textarea in ans_text_areas:
+    pyportal.splash.append(textarea)
+
+while True:
+    # Load new question when screen is touched
+    while not pyportal.touchscreen.touch_point:
+        pass
+
+    reveal_text_area.text = ''
+    q_text_area.text = ''
+    for textarea in ans_text_areas:
+        textarea.text = ''
+    timer_text_area.text = ''
+
+    pyportal.set_background(cwd+"/trivia.bmp")
+    loading_text_area.text ="Loading question..."
+
+    while True:
+        try:
+            value = pyportal.fetch()
+            break
+        except RuntimeError as e:
+            print("Some error occured, retrying! -", e)
+            continue
+    print("Response is", value)
+    question = value[0]
+    correct_answer = value[1]
+    answers = shuffle(value[1:5])
+    loading_text_area.text = ''
+
+    # Format text and wrap with display text library
+    try: # sometimes gives a runtime error: Group full
+        q_text_area.text = '\n'.join(pyportal.wrap_nicely(unescape(question), 35))
+    except RuntimeError as e:
+        print("Group full", e)
+        continue
+    for k, answer in enumerate(answers):
+        ans_text_areas[k].text = answer_choices[k]+") "+unescape(answer)
+
+    faceOff(10) # 10 seconds with question
+    time.sleep(2) # pause for 2 seconds to show which player tapped first
+    faceOff(5) # 5 seconds to answer
+    timer_text_area.text = ''
+    # Show the correct answer
+    k = answers.index(correct_answer)
+    reveal_text = ("Correct Answer:\n"+answer_choices[k]+") "
+                   +unescape(answers[k])+"\n(Tap for next question.)")
+    print(reveal_text)
+    reveal_text_area.text = reveal_text