Merge branch 'HEAD' of https://github.com/ufian/MicroBitFun.git

shadow/shadow.py

@@ -0,0 +1,75 @@
+from microbit import *  
+import radio
+
+def get_accelerometer():
+    return (accelerometer.get_x(), accelerometer.get_y())
+
+class Matrix(object):
+    SIZE_X = 5
+    SIZE_Y = 5
+
+    def __init__(self, start_x, start_y):
+        self.matrix = [
+            [0 for x in range(self.SIZE_X)] 
+            for y in range(self.SIZE_Y)
+        ]
+
+        self.last_pos = (start_x, start_y)
+
+    def get(self, pos):
+        x = pos[0]
+        y = pos[1]
+        return self.matrix[y][x]
+
+    def set(self, pos, value):
+        x = pos[0]
+        y = pos[1]
+
+        if value > 9:
+            value = 9
+        elif value < 0:
+            value = 0
+        self.matrix[y][x] = value
+
+    def fading(self):
+        for x in range(self.SIZE_X):
+            for y in range(self.SIZE_Y):
+                pos = (x, y)
+                self.set(pos, self.get(pos) - 1)
+
+    def _round_index(self, raw_value, last_index):
+        index = int(round((raw_value / 100) + 2, 0))
+        return min(max(index, max(last_index - 1, 0)), min(last_index + 1, 4))
+
+    def validate_position(self, position):
+        return tuple(
+            self._round_index(new_value, last_value)
+            for new_value, last_value in zip(position, self.last_pos)
+        )
+
+    def set_position(self, position):
+        pos = self.validate_position(position)
+        self.last_pos = pos
+
+        self.set(pos, 9)
+
+    def show(self):
+        matrix_str = ":".join([
+            "".join([str(cell) for cell in row]) 
+            for row in self.matrix
+        ])
+
+        display.show(Image(matrix_str))
+
+matrix = Matrix(2, 2)
+
+while True:
+    for num in range(2):
+        new_pos = get_accelerometer()
+        matrix.set_position(new_pos)
+
+        if num == 0:
+            matrix.fading()
+
+        matrix.show()
+