Add scrolling of over-long text

Author: jepler

CircuitPython_Zorque_Text_Game_openai/code.py

@@ -6,6 +6,7 @@
 import adafruit_esp32spi.adafruit_esp32spi_socket as socket
 import adafruit_requests as requests
 import adafruit_touchscreen
+from adafruit_ticks import ticks_ms, ticks_add, ticks_less
 from adafruit_bitmap_font.bitmap_font import load_font
 from adafruit_display_text.bitmap_label import Label
 from adafruit_display_text import wrap_text_to_pixels
@@ -104,15 +105,44 @@ def terminal_palette(fg=0xffffff, bg=0):
     p[1] = fg
     return p
 
+class WrappedTextDisplay:
+    def __init__(self):
+        self.line_offset = 0
+        self.lines = []
+
+    def add_text(self, text):
+        self.lines.extend(wrap_text_to_pixels(text, use_width, nice_font))
+
+    def set_text(self, text):
+        self.lines = wrap_text_to_pixels(text, use_width, nice_font)
+        self.line_offset = 0
+
+    def scroll_to_end(self):
+        self.line_offset = self.max_offset()
+
+    def scroll_next_line(self):
+        max_offset = self.max_offset()
+        if max_offset > 0:
+            line_offset = self.line_offset + 1
+            self.line_offset = line_offset % (max_offset + 1)
+
+    def max_offset(self):
+        return max(0, len(self.lines) - max_lines)
+
+    def on_last_line(self):
+        return self.line_offset == self.max_offset()
+
+    def refresh(self):
+        text = '\n'.join(self.lines[self.line_offset : self.line_offset + max_lines])
+        while '\n\n' in text: 
+            text = text.replace('\n\n', '\n \n')
+        terminal.text = text
+        board.DISPLAY.refresh()
+wrapped_text_display = WrappedTextDisplay()
+
 def print_wrapped(text):
-    lines = wrap_text_to_pixels(text, use_width, nice_font)
-    del lines[max_lines:]
-    #del lines[:-max_lines]
-    text = '\n'.join(lines)
-    while '\n\n' in text: 
-        text = text.replace('\n\n', '\n \n')
-    terminal.text = text
-    board.DISPLAY.refresh()
+    wrapped_text_display.set_text(text)
+    wrapped_text_display.refresh()
 
 def make_full_prompt(action):
     return session + [{"role": "user", "content": f"PLAYER: {action}"}]
@@ -128,7 +158,15 @@ def record_game_step(action, response):
 def get_one_completion(full_prompt):
     if not use_openai:
         return f"""This is a canned response in offline mode. The player's last choice was as follows:
-    {full_prompt[-1]['content']}""".strip()
+    {full_prompt[-1]['content']}
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Nulla aliquet enim tortor at auctor urna. Arcu ac tortor dignissim convallis aenean et tortor at. Dapibus ultrices in iaculis nunc sed augue. Enim nec dui nunc mattis enim ut tellus elementum sagittis. Sit amet mattis vulputate enim nulla. Ultrices in iaculis nunc sed augue lacus. Pulvinar neque laoreet suspendisse interdum consectetur libero id faucibus nisl. Aenean pharetra magna ac placerat vestibulum lectus mauris ultrices eros. Imperdiet nulla malesuada pellentesque elit eget. Tellus at urna condimentum mattis pellentesque id nibh tortor. Velit dignissim sodales ut eu sem integer vitae. Id ornare arcu odio ut sem nulla pharetra diam sit.
+
+1: Stand in the place where you live
+2: Now face West
+3: Think about the place where you live
+4: Wonder why you haven't before
+    """.strip()
     try:
         response = requests.post(
             "https://api.openai.com/v1/chat/completions",
@@ -154,6 +192,7 @@ def get_touchscreen_choice():
 
     # Wait for screen to be pressed
     touch_count = 0
+    deadline = ticks_add(ticks_ms(), 1000)
     while True:
         t = ts.touch_point
         if t is not None:
@@ -162,6 +201,10 @@ def get_touchscreen_choice():
                 break
         else:
             touch_count = 0
+            if wrapped_text_display.max_offset() > 0 and ticks_less(deadline, ticks_ms()):
+                wrapped_text_display.scroll_next_line()
+                wrapped_text_display.refresh()
+                deadline = ticks_add(deadline, 5000 if wrapped_text_display.on_last_line() else 1000)
 
     # Depending on the quadrant of the screen, make a choice
     x, y, _ = t
@@ -177,7 +220,10 @@ def run_game_step(forced_choice=None):
         choice = forced_choice
     else:
         choice = get_touchscreen_choice()
-    print_wrapped(f"PLAYER: {choice}")
+    wrapped_text_display.add_text(f"\nPLAYER: {choice}")
+    wrapped_text_display.scroll_to_end()
+    wrapped_text_display.refresh()
+
     prompt = make_full_prompt(choice)
     for _ in range(3):
         result = get_one_completion(prompt)
@@ -186,7 +232,8 @@ def run_game_step(forced_choice=None):
     else:
         raise ValueError("Error getting completion from OpenAI")
     print(result)
-    print_wrapped(result)
+    wrapped_text_display.set_text(result)
+    wrapped_text_display.refresh()
 
     record_game_step(choice, result)