just use indices in self.boxes instead of the coords

__init__.py

@@ -1,5 +1,6 @@
 from st3m.application import Application, ApplicationContext
 from st3m.run import run_view
+import leds
 import os.path
 
 UP    = 0
@@ -37,7 +38,7 @@ class Quox(Application):
 
     # start at top and go clockwise, 100px from center, 36° apart
     # y = 100 cos θ; x = 100 sin θ
-    CHEST_COORDS = \
+    BOX_COORDS = \
         [(0, -100), (59,  -81), (95,  -31), (95,  31),  (59,  81),
          (0, 100),  (-59, 81),  (-95, 31),  (-95, -31), (-59, -81)]
 
@@ -53,7 +54,6 @@ class Quox(Application):
         self.random = Random()
 
         self.boxes = []
-        self.reached_boxes = []
         self.x = 0
         self.y = 0
 
@@ -64,6 +64,10 @@ class Quox(Application):
         self.new_direction()
         self.new_turn_delay()
 
+        leds.set_gamma(2, 2, 2)
+        leds.set_auto_update(False)
+        leds.set_slew_rate(255)
+
     def adjusted_x(self):
         if self.direction == UP or self.direction == DOWN:
             return self.x - 32
@@ -80,12 +84,6 @@ class Quox(Application):
         self.clear(ctx)
         # self.text(ctx)
         self.quox_sprite(ctx)
-        self.draw_boxes(ctx)
-
-    def draw_boxes(self, ctx):
-        for i, j in Quox.CHEST_COORDS:
-            if (i, j) in self.boxes:
-                ctx.rgb(.3, 1, .85).rectangle(i-4, j-4, 8, 8).fill()
 
     def clear(self, ctx):
         ctx.rgb(0, 0, 0) \
@@ -120,18 +118,16 @@ class Quox(Application):
         self.pick_direction()
         self.pick_step()
         self.maybe_move()
+        self.update_leds()
 
     def add_boxes(self, state):
         for i, button in enumerate(state.captouch.petals):
-            box = Quox.CHEST_COORDS[i]
             if button.pressed:
-                if box not in self.boxes:
-                    self.boxes.append(box)
+                if i not in self.boxes:
+                    self.boxes.append(i)
             else:
-                if box in self.boxes:
-                    self.boxes.remove(box)
-                if box in self.reached_boxes:
-                    self.reached_boxes.remove(box)
+                if i in self.boxes:
+                    self.boxes.remove(i)
 
     def update_delay(self, Δ):
         self.turn_delay -= Δ
@@ -193,10 +189,10 @@ class Quox(Application):
             self.x += 5
 
     def target(self):
-        for box in self.boxes:
-            if box not in self.reached_boxes:
-                return box
-        return None
+        if self.boxes:
+            return Quox.BOX_COORDS[self.boxes[0]]
+        else:
+            return None
 
     def towards(self, direction, point):
         if not point:
@@ -215,5 +211,16 @@ class Quox(Application):
     def towards_target(self):
         return self.towards(self.direction, self.target())
 
+    def update_leds(self):
+        leds.set_all_rgb(0, 0, 0)
+        for i in range(10):
+            if i in self.boxes:
+                center = i * 4
+                left   = (center - 1) % 40
+                right  = (center + 1) % 40
+                for led in [left, right, center]:
+                    leds.set_hsv(led, ((i + 4) * 36) % 360, 1, 1)
+        leds.update()
+
 if __name__ == '__main__':
     run_view(Quox(ApplicationContext()))