Add flappybit.py example

from November 2015 LdnPyDojo

examples/flappybit.py

@@ -0,0 +1,77 @@
+'''
+Flappy Bit
+
+Control the bit by tilting the micro:bit
+
+Avoid the obstacles
+
+Create your own terrain by editing the terrain list below:
+'''
+
+import music
+from microbit import (accelerometer,
+                      display,
+                      sleep,
+                      Image,
+                      reset,
+                      )
+
+display.scroll('Flappy Bit')
+
+bird = 2
+terrain = [
+    (0, 0),
+    (0, 0),
+    (0, 0),
+    (0, 0),
+    (0, 2),
+    (0, 0),
+    (0, 0),
+    (3, 0),
+    (3, 0),
+    (4, 0),
+    (3, 0),
+    (0, 0),
+    (0, 0),
+    (0, 1),
+    (2, 0),
+    (3, 0),
+    (4, 0),
+    (3, 0),
+    (0, 0),
+    (0, 1),
+    (2, 0),
+]
+
+terrain_multiplier = 5
+pos = 0
+
+while True:
+    sleep(100)
+    if -256 < accelerometer.get_y() < 450:
+        bird = max(0, bird - 1)
+    elif 568 < accelerometer.get_y() < 1024:
+        bird = min(4, bird + 1)
+
+    display.clear()
+    display.set_pixel(0, bird, 9)
+
+    pos_terrain = pos // terrain_multiplier
+    lost_status = False
+    for column, (top, bottom) in enumerate(
+            terrain[pos_terrain:pos_terrain + 5]):
+        for y in range(top):
+            display.set_pixel(column, y, 4)
+            if column == 0 and bird == y:
+                lost_status = True
+        for y in range(bottom):
+            display.set_pixel(column, 4 - y, 4)
+            if column == 0 and bird == (4 - y):
+                lost_status = True
+    if lost_status:
+        display.show(Image.SAD)
+        music.play(music.FUNERAL)
+        reset()
+    pos += 1
+    if pos_terrain > len(terrain):
+        pos = 0