Spot Animation

apps/spot.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import random
+
+import pygame
+
+
+class SpotDisplay:
+    FRAMES = 5
+
+    PATH = [
+        *((8 * 1, 8 * i) for i in range(1, 4)),
+        *((8 * i, 8 * 3) for i in range(2, 9)),
+        *((8 * 8, 8 * i) for i in range(2, 0, -1)),
+        *((8 * i, 8 * 1) for i in range(7, 1, -1)),
+    ]
+
+    def __init__(self, width: int, height: int, debug: bool = False):
+        self.width = width
+        self.height = height
+        self.debug = debug
+
+        pygame.init()
+        if not self.debug:
+            self.screen = pygame.Surface((self.width, self.height), flags=pygame.SRCALPHA, depth=32)
+        else:
+            self.screen = pygame.display.set_mode((self.width, self.height))
+
+        self.clock = pygame.time.Clock()
+        self.i = 0
+        self.stop = None
+        self.sleep = 0
+
+    def display(self):
+        while True:
+            self.clock.tick(self.FRAMES)
+
+            if self.sleep:
+                self.sleep -= 1
+                continue
+
+            self.screen.fill((0, 0, 0, 120))
+            pygame.draw.rect(self.screen, (0, 0, 0, 255), pygame.Rect(*self.PATH[self.i], 8, 8))
+            self.i = (self.i + 1) % len(self.PATH)
+
+            if self.stop == 0 or self.stop is None:
+                if self.stop is not None:
+                    self.sleep = 7 * self.FRAMES
+                self.stop = random.randint(8 * self.FRAMES, 20 * self.FRAMES)
+            self.stop -= 1
+
+            if not self.debug:
+                os.write(1, pygame.image.tostring(self.screen, "RGBA"))
+            else:
+                pygame.display.flip()
+
+
+if __name__ == "__main__":
+    try:
+        Nx = int(sys.argv[1])  # Breite des Displays
+        Ny = int(sys.argv[2])  # Höhe des Displays
+        debug = False
+    except IndexError:
+        Nx, Ny = 80, 40
+        debug = True
+
+    SpotDisplay(Nx, Ny, debug).display()

config.py

@@ -46,6 +46,7 @@ Apps = [
     AppConfig(guiname="Wolfram", name="wolfram", cmd="./wolfram.py"),
     AppConfig(guiname="Digi Clock", name="digiclock", cmd="./digi_clock.py"),
     AppConfig(guiname="Text Scroller MQTT", name="textscroll", cmd="./textscroll.py"),
+    AppConfig(guiname="Spot", name="spot", cmd="./spot.py", white=True),
     AppConfig(guiname="Flicker", name="flicker", cmd="./flicker"),
 
     AppConfig(guiname="Pixelflut", name="pixelflut", cmd="./pixelflut", persistent=True),